R22 air-cooled modular chiller 50Hz unit. Content

Transcription

1 Content 1.Nomenclature Product Schedule External Appearance... 4.Features Specification Dimension Refrigeration System Sketch Drawing Wiring Diagrams Electric Characteristics Capacity Tables Exploded View Trouble Shooting Installation Commissioning Maintenance Control System Appendix Manufacture reserves the right to discontinue, or change at any time, specifications or designs without notices and without incurring obligations. Content i

2 MCAC-ATSM Nomenclature M G B W / R Power Supply S 80V,50Hz,ph R 80~415V,50Hz,ph Outdoor Unit Cooling Capacity (kw) Compressor Type F Fixed Speed Scroll Compressor D Digital Scroll Compressor Heat Exchanger Type A Plate type B Double-pipe or shell-tube type Light Com m ercial Chiller System Midea 2.Product Schedule No Model Refrigerant Net dimension Net weight (L W H) (unit: mm) (kg) Power supply 1 MGB-F25W/R R ~415V/ph/50Hz 2 MGB-D25W/R R ~415V/ph/50Hz MGB-F0W/R R ~415V/ph/50Hz 4 MGB-D0W/R R ~415V/ph/50Hz 5 MGB-F5W/R R ~415V/ph/50Hz 6 MGB-D5W/R R ~415V/ph/50Hz 7 MGB-F55W/S R V/ph/50Hz 8 MGB-F60W/S R V/ph/50Hz 9 MGB-F65W/S R V/ph/50Hz 10 MGB-F10W/S R V/ph/50Hz 11 MGB-F200W/S R V/ph/50Hz 2 Nomenclature&Product Schedule

3 MCAC-ATSM External Appearance 25/0/5kw module 55/60/65kw module 10kw module 200kw module External appearance

4 MCAC-ATSM Features 1.Digital scroll technique,new type air-cooled modular chiller system. Capacity output is controlled depending on controlling compressor to on/off in traditional modular air-cooled chiller system control. The precision of the control mode is not very good, and the compressor is frequently on and off, which is very bad for the compressor s life. Digital scroll air-cooled modular chiller system breaks traditional design, which is inconceivably designed with digital scroll compressor and constant scroll compressor parallel connection. The system can achieve linear capacity output(after combined) within 0.5%-100% which is widest in industry. When the system operates at the part-load, the system can accurately adjust cooling and heating capacity output basing on actual requirement of the indoor room. (100%)ON 100% 75% 50% (0%)OFF Capacity output of traditional air-cooled modular chiller system 25% Capacity 0.5% output(kw) Capacity output of digital scroll air-cooled modular chiller system 2.Modular design, flexible combination, more convenient for design and installation. The units adopt modular design, which can make more units to connect together. The unit can combine 16 separate modules (25kw, 0kw,5kw,55kw,60kw.65kwmodule) or 8 modules (10kw module). Cooling (heating) capacity can increase step by step by 5KW per each time within 25kW-1040kW,meanwhile every separate module can operate as main unit, also each module can be a slave unit with modules combination, more convenient for design and installation. 65KW 65kW 1040KW.The maximum combination of the system consists of 1 main unit and 15 slave units for 25kw,0kw,5kw,55kw,60kw and 65kw module,1 main unit and 7 slave units for 10kw module and 1 main unit and 4 slave units for 200kw module. 4. Outlet water temp. adjustable. Outlet water temp. can be adjusted by wired controller according to customer s demand.in cooling mode, the adjustable range from 5-17 (7 is default). In heating mode, the adjustable range from (45 is default). 5.Compact structure Air-cooled modular chiller structure is compact, light weight. The system adopts double-pipe, shell and tube heat exchanger, not only greatly enhanced the transfer performance, but also reduce the unit weight, the lightest single module only has 80kg. 6.Back up function 4 Features

5 When unit is failure If master unit fails, all the units will stop. If one slave unit fails, this unit will stop but the others will keep running. When the master unit fails, any of the slave one can be set as the master unit by manual setting. When unit is under protection If master unit s protection occurs, this unit will stop but the others will keep running. If slave unit s protection occurs, this unit will stop but the others will keep running. ( Except PE, P9 protection happen) Master Slave Master Slave 7.Strong micro-computer intelligent control and monitor function. Optimizing the design of system and using varieties of protection devices, to make the system more safe and reliable. 8. Superior reliability System will be more reliable with new type efficient heat exchanger. Evaporator of 25KW,0KW and 5KW module adopt double-pipe heat exchanger, evaporator of 55kw,60kw,65kw,10kw and 200kw module adopt shell-tube heat exchanger. Double-pipe heat exchanger Shell and tube heat exchanger Features 5

6 MCAC-ATSM Specification Model MGB-F25W/R MGB-F0W/R MGB-F5W/R Cooling Capacity kw Heating Capacity kw Power supply V/Ph/Hz //50 Compressor Power input Refrigerant Condenser (Air side) Evaporator (Water side) Type Note: Specifications are based on the following conditions: Cooling : chilled water inlet/outlet: 12 C / 7 C, and outdoor ambient temp. of 5 C (117 ) DB. Heating : heat water inlet/outlet: 40 C / 45 C, and outdoor ambient temp. 7 C DB/6 C WB. Water side fouling factor: 0.086m2 C /kw. Scroll (constant speed) Quantity Pieces 2 Model Brand ZR72KC-TFD-522 Copeland Capacity W Input W Rated current(rla) A Locked rotor Amp(LRA) A 74 2 Cooling kw Heating kw Type Weight kg 6.2 Air side heat-exchanger type R22 Fin-coil Quantity of fan motor Pieces 1 Air volume 10 m /h 12 Fan motor input kw 0.65 Water side heat-exchanger type Double-pipe heat exchanger Water resistance loss kpa 60 Water inlet/outlet pipeline diameter mm DN40 Water volume m /h Max. Pressure MPa 1 Water pipe connection type Flexible joint Dimension L W H mm Packing size L W H mm Weight Connection wiring Control type Safety protection device Net weight kg 80 Gross weight kg 400 Power wiring mm 2 No Signal wiring mm 2 No core Wired controller High or low pressure switch, freeze-proof device, water volume controller, overcurrent device, power phase sequence device etc. Noise level db(a) 65 Operation water temp Cooling:5~17 Heating:45~50 Ambient temp Cooling:10~46 Heating:-10~21 Specification 6

7 Model MGB-D25W/R MGB-D0W/R MGB-D5W/R Cooling Capacity kw Heating Capacity kw Power supply V/Ph/Hz //50 Type Constant speed scroll + Digital scroll Compressor Power input Refrigerant Quantity Pieces 1+1 Model Brand ZR72KC-TFD-522+ ZRD61KC-TFD-52 Copeland Capacity W Input W Rated current(rla) A Locked rotor Amp(LRA) A Cooling kw Heating kw Type Weight kg 6.2 R22 Air side heat-exchanger type Fin-coil Condenser (Air side) Quantity of fan motor Pieces 1 Air volume 10 m /h 12 Fan motor input kw 0.65 Water side heat-exchanger type Double-pipe heat exchanger Water resistance loss kpa 60 Evaporator (Water side) Water inlet/outlet pipeline diameter mm DN40 Water volume m /h Max. Pressure MPa 1 Water pipe connection type Flexible joint Dimension L W H mm Packing size L W H mm Weight Connection wiring Control type Net weight kg 80 Gross weight kg 400 Power wiring mm 2 No Signal wiring mm 2 No core Wired controller Safety protection device High or low pressure switch, freeze-proof device, water volume controller, overcurrent device, power phase sequence device etc. Noise level db(a) 65 Operation water temp Cooling:5~17 Heating:45~50 Ambient temp Cooling:10~46 Heating:-10~21 Note: Specifications are based on the following conditions: Cooling : chilled water inlet/outlet: 12 C / 7 C, and outdoor ambient temp. of 5 C (117 ) DB. Heating : heat water inlet/outlet: 40 C / 45 C, and outdoor ambient temp. 7 C DB/6 C WB. Water side fouling factor: 0.086m2 C /kw. Specification 7

8 MCAC-ATSM Model MGB-F55W/S MGB-F60W/S MGB-F65W/S Cooling Capacity kw Heating Capacity kw Power supply V/Ph/Hz 80//50 80//50 80//50 Compressor Power input Refrigerant Condenser (Air side) Evaporator (Water side) Type Fixed speed scroll Quantity Pieces 2 Model Brand VR144KS-TFP-522 Copeland Capacity W Input W Rated current(rla) A Locked rotor Amp(LRA) A Cooling kw Heating kw Type Weight kg 15 Air side heat-exchanger type R22 Fin-coil Quantity of fan motor Pieces 2 Air volume 10 m /h 24 Fan motor input kw Water side heat-exchanger type Shell and tube heat exchanger Water resistance loss kpa 15 Water inlet/outlet pipeline diameter mm DN100 Water volume m /h Max. Pressure MPa 1 Water pipe connection type Flexible joint Dimension L W H mm Packing size L W H mm Weight Connection wiring Control type Safety protection device Net weight kg 580 Gross weight kg 650 Power wiring mm 2 No Signal wiring mm 2 No core Wired controller High or low pressure switch, freeze-proof device, water volume controller, overcurrent device, power phase sequence device etc. Noise level db(a) 65 Operation water temp Cooling:5~17 Heating:45~50 Ambient temp Cooling:10~46 Heating:-10~21 Note: Specifications are based on the following conditions: Cooling : chilled water inlet/outlet: 12 C / 7 C, and outdoor ambient temp. of 5 C (117 ) DB. Heating : heat water inlet/outlet: 40 C / 45 C, and outdoor ambient temp. 7 C DB/6 C WB. Water side fouling factor: 0.086m2 C /kw. 8 Specification

9 Model MGB-F10W/S MGB-F200W/S Cooling Capacity kw Heating Capacity kw Power supply V/Ph/Hz 80//50 80//50 Compressor Power input Refrigerant Condenser (Air side) Evaporator (Water side) Type Fixed speed Scroll Quantity Pieces 4 6 Model VR144KS-TFP-522 SM147A4ALB Brand Copeland Danfoss Capacity W Input W Rated current(rla) A Locked rotor Amp(LRA) A Cooling kw Heating kw Type Weight kg 0 42 Air side heat-exchanger type R22 Fin-coil Quantity of fan motor Pieces 4 6 Air volume 10 m /h Fan motor input kw Water side heat-exchanger type Shell and tube heat exchanger Water resistance loss kpa 25 0 Water inlet/outlet pipeline diameter mm DN65 DN80 Water volume m /h Max. Pressure MPa 1 Water pipe connection type Flexible joint Dimension L W H mm Packing size L W H mm Weight Connection wiring Control type Net weight kg Gross weight kg Power wiring mm 2 No Signal wiring mm 2 No core Wired controller High or low pressure switch, freeze-proof device, water Safety protection device volume controller, overcurrent device, power phase sequence device etc. Noise level db(a) Operation water temp Cooling:5~17 Heating:45~50 Ambient temp Cooling:10~46 Heating:-10~21 Note: Specifications are based on the following conditions: Cooling : chilled water inlet/outlet: 12 C / 7 C, and outdoor ambient temp. of 5 C (117 ) DB. Heating : heat water inlet/outlet: 40 C / 45 C, and outdoor ambient temp. 7 C DB/6 C WB. Water side fouling factor: 0.086m2 C /kw. Specification 9

10 MCAC-ATSM Dimension 25/0/5kw module Front view Top view Unit: mm Model A B C D E F MGB-F(D)25W/R MGB- F(D)0W/R MGB-F(D)5W/R Dimension 10

11 55/60/65kw module Front view Top view Unit: mm Model A B C D E F G H I J K MGB-F55W/S MGB-F60W/S MGB-F65W/S Dimension 11

12 MCAC-ATSM kw module Front view Side view Top view Anchor hole Unit: mm Model A B C D E F G H MGB-F10W/S Dimension

13 200kw module Front view Side view Top view Anchor hole Unit: mm Model A B C D E F G H MGB-F200W/S Dimension 1

14 MCAC-ATSM Refrigeration System Sketch Drawing /0/5kw module refrigeration system sketch drawing Each module has two compressors with two separate units, one double-pipe evaporate for two systems. Fan Discharge pipe 4-way valve A 4-way valve B Condenser Compressor A Compressor B Filter A Filter B Suction pipe Water inlet Water outlet throttle parts A Low pressure cylinder A Low pressure cylinder B Evaporator throttle parts B (Double-pipe heat exchanger) /60/65kw module refrigeration system sketch drawing Each module has two compressors with two separate units, one shell and tube evaporate for two systems. low pressure cylinder B 4-Way valve B 4" Compressor B Fan A Fan B EXV Water direction Capillary Dry type evaporator Condenser Capillary EXV Compressor A 4-Way valve A low pressure cylinder A 14 Refreigerant System Sketch Drawing

15 7. 10kw module refrigeration system sketch drawing Each module has four compressors with two separate units, one shell and tube evaporate for four systems.\ low pressure cylinder B 4-Way valve B Unit 2 DN /2" Compressor B Fan A Fan B EXV Water direction Capillary Dry type evaporator Condenser Capillary EXV Compressor A 4-Way valve A low pressure cylinder A Unit kw module refrigeration system sketch drawing Each module has six compressors with three separate units, one shell and tube evaporate for six systems. low pressure cylinder B Unit 2 4-Way valve B " Compressor B Fan A Fan B EXV Water direction Capillary Dry type evaporator Condenser Capillary EXV Compressor A 4-Way valve A Unit low pressure cylinder A Unit 1 Refreigerant System Sketch Drawing 15

16 8.Wiring Diagrams 8.1 Wiring Diagrams 25/0/5kw module MCAC-ATSM Attached Drawing (I) Electric Drawing of Main Unit and Auxiliary Unit N L 16 Wiring Diagrams

17 55/60KW module Attached picture (I) Electric Drawing of Main Unit and Auxiliary Unit Wiring Diagrams 17

18 65kw module MCAC-ATSM Attached picture (II) Electric Drawing of Main Unit and Auxiliary Unit 18 Wiring Diagrams

19 10kw module TRANS2 TRANS1 COMP(1-B) S.V(1-B) CN15 (BLACK COMP(1-A) S.V(1-A) CN11 (WHITE CN8 CN10) HEAT1 PUMP1 KM2 KM1 XT Q P (E) K1(1A) H_PRO(1A) K1(1B) H_PRO(1B) L_PRO(1A1) CN6 CN CN7 H&L_PRO WATER1_PRO COM(I) ON 12 SW1 S1 S2 1#(MAIN) FAN_L CN42 FAN_H CN41 TRANS IN TRANS OUT CN19 (RED) CN40 (WHITE TRANS IN TRANS OUT CN9 (RED) CN20 (WHITE T4-1 T-1B T-1A TALL TU1 XS XP XS2 XP2 XS1 XP1 CN4 CN12 CN16 CN5 CN1 T-1A T-1B T41 FAN_L CN44 TOTAL WATER TBH1-B TBH1-A EXCHANGER WATER 1 ON 12 SW2 S S4 KA1 KA2 2#(SLAVE) CT4 CURRENT(2B) FAN_H CN4 CT CURRENT(2A) POWER S.V(2-A) COMP(2-A) CN5 S.V(2-B) COMP(2-B) CN1 CN18 CT1 CURRENT(1A) CT2 CURRENT (1B) KM KA KM4 KA4 CAP4 N L_PRO(1A2) FAN2B Y/G L_PRO(1B2) Attached Drawing (I) Electric Drawing of Main Unit and Auxiliary Unit L_PRO(1B1) H_PRO(2A) CAP K1(2A) CAP2 H_PRO(2B) FAN1B Y/G K1(2B) N XT2 CAP1 A B C FAN1A Y/G A B C N A B C FAN2A Y/G N TBH1-A TBH1-B L_PRO(2A1) L_PRO(2A2) A B C L_PRO(2B1) L_PRO(2B2) A CN26 H&L_PRO B C T42 T-2B T-2A WATER2_PRO CN2 XP4 XS4 T-2A KM4 KM KM2 KM1 N XP5 XS5 T-2B CN6 XS6 XP6 T4-2 U V W U V W U V Y/G Y/G W Y/G U V W Y/G COMP2B COMP2A COMP1B COMP1A TBH2-B TBH2-A EXCHANGER WATER 2 TBH2-A CN24 TBH2-B Heat1B Heat1A CN25 Heat2A TU2 CN Heat2B Wiring Diagrams 19

20 200kw module MCAC-ATSM T4- T4-2 Attached Drawing (I) Electric Drawing of Main Unit and Auxiliary Unit T4-1 TRANS1 CAP1 CAP2 XT P Q (E) XT2 A B C A B C A B C TRANS2 TRANS A B C A B C A B C 50Hz A ~ B C KM6 KM5 KM4 KM KM2 KM1 N V N V U V W V V V U V W U V W U V W U V W U V W Y/G Y/G Y/G Y/G Y/G Y/G COMP1B COMP2A COMP2B COMPA COMPB COMP1A Heat1B Heat1A Heat2A HeatA Heat2B HeatB 20 Wiring Diagrams

21 2 R VVP -00/00 X0.75m m 2 R VVP -00/00 X0.75m m 2 R VVP -00/00 X0.75m m 2 2 MCAC-ATSM Networking Communication Schematic of Main Unit and Auxiliary Unit 25/0/5kw module Attached Drawing (II) Networking Communication Schematic of Main Unit and Auxiliary Unit Main unit No.0 Auxiliary unit No.1 Communi cate with wired controller Communicate with wired controller Power supply V N~50Hz RW-00/ mm 2 Power supply V N~50Hz RW-00/ mm 2 RVV-00/500 2X1.0mm Distance 500m Communicate with the next unit Water switch Communicate with the last unit Communicate with the next unit RVV-00/500 2X1.0mm Communication between wired controller and main unit is connected through P, Q and E. (P and Q are polar, and the P, Q and E of main unit must be corresponding to P, Q and E of wired controller for connection) Contactor Over current relay Pump P(Yellow) Q(Gray)E(Black) Contactor Over current relay Auxiliary electric heater Auxiliary unit No.15 Power adaptor AC V/AC9.5V Mode Check On-timer Manual/auto Aux. heat Off-timer Temp. setting OK ADD + ADD - Reset Lock Address setting Power socket PgDn (temp. +) PgDn (temp. -) The sheet metal of contactor Installation box should be grounded A B C N Notes: Wiring method between auxiliary electric heater and pump is for information only. Please refer to the use direction of the allocated auxiliary electric heater and pump. For configuration of power line and power switch of auxiliary electric heater and pump, please refer to relevant product parameters and the national standard code. Power supply V N~50Hz Communicat ewithwired controller Power supply V N~50Hz RW-00/ mm Communicate with the last unit 2 Wiring Diagrams 21

22 2 R VVP -00/00 X0.75m m 2 R VVP -00/00 X0.75m m 2 R VVP -00/00 X0.75m m 2 2 MCAC-ATSM /60/65kw module Attached picture (III) Networking Communication Schematic of Main Unit and Auxiliary Unit Main unit No.0 Auxiliary unit No.1 Communi cate with wired controller Communicate with wired controller Power supply V N~ 50Hz RW-00/ mm 2 Power supply V N~ 50Hz RW-00/ mm 2 Communicate with the last unit RVV-00/500 2X1.0mm Distance 500m Communicate with the next unit Water switch Communicate with the next unit RVV-00/500 2X1.0mm Communication between wired controller and main unit is connected through P, Q and E. (P and Q are polar, and the P, Q and E of main unit must be corresponding to P, Q and E of wired controller for connection) Contactor Over current relay Pump P(Yellow) Q(Gray)E(Black) Contactor Over current relay Auxiliary electric heater Auxiliary unit No.15 Power adaptor Mode Check On-timer Temp. setting ADD + PgDn (temp. +) Manual/auto Aux. heat Off-timer OK ADD - Reset Lock Address setting Power socket PgDn (temp. -) The sheet metal of contactor Installation box should be grounded A B C N Notes: Wiring method between auxiliary electric heater and pump is for information only. Please refer to the use direction of the allocated auxiliary electric heater and pump. For configuration of power line and power switch of auxiliary electric heater and pump, please refer to relevant product parameters and the national standard code. Power supply V N~50Hz Communicat ewithwired controller Power supply V N~ 50Hz RW-00/ mm 2 Communicate with the last unit 22 Wiring Diagrams

23 R VV-00/500 4X5+1 m 2 RVVP-00/00 X0.75mm 2 RVVP-00/00 X0.75mm 2 2 RVVP-00/00 X0.75mm 2 R VV-00/500 4X5+1 m R VV-00/500 4X5+1 m MCAC-ATSM kw module X16m 2 X16m 2 Attached Drawing (II) Networking Communication Schematic of Main Unit and Auxiliary Unit Main unit No.0 Slave unit No.1 Slave unit No.2 Slave unit No. Communi cate with wired controller X T XT 1 H 2 H 1 P P 2 Communi cate with wired controller Power supply 80V N~ 50Hz X16m 2 Communicate with the next unit Distance 500m Water switch Communication between wired controller and main unit is connected through P, Q and E. Communicate with the last unit Communicate with the next unit RVV-00/500 2X1.0mm RVV-00/500 2X1.0mm (P and Q are polar, and the P, Q and E of main unit must be corresponding to P, Q and E of wired controller for connection) Contactor Over current relay P(Yellow) Q(Gray) E(Black) Pump Contactor Over current relay Auxiliary electric heater Slave unit No.14 Slave unit No.15 Power adaptor AC220V/AC9.5V Mode Check On-timer Manual/auto Aux. heat Off-timer Temp. setting ADD + PgDn (temp. +) OK ADD - PgDn (temp. -) Reset Lock Address setting Power socket The sheet metal of contactor Installation box should be grounded A B C N Notes: Wiring method between auxiliary electric heater and pump is for information only. Please refer to the use direction of the allocated auxiliary electric heater and pump. For configuration of power line and power switch of auxiliary electric heater and pump, please refer to relevant product parameters and the national standard code. Power supply 80V N~ 50Hz Communi cate with wired controller XT Power supply 80V N~ 50Hz Power supply 80V N~ 50Hz Wiring Diagrams 2

24 200kw module MCAC-ATSM Attached Drawing (II) Networking Communication Schematic of Main Unit and Auxiliary Unit Y ellow Gra y Black Fault Query Power Supply Connector 24 Wiring Diagrams

25 9.Electric Characteristics Model Outdoor Unit Power Supply Compressor OFM Hz Voltage Min. Max. TOCA MFA LRA RLA KW FLA MGB-F25W/R ( 2) 8.1( 2) MGB-D25W/R ( 2) 8.1( 2) MGB-F0W/R ( 2) 8.1( 2) MGB-D0W/R ( 2) 8.1( 2) MGB-F5W/R ( 2) 8.1( 2) MGB-D5W/R ( 2) 8.1( 2) MGB-F55W/S ( 2) 17.6 ( 2) 0.65( 2).0( 2) MGB-F60W/S ( 2) 17.6( 2) 0.65( 2).0( 2) MGB-F65W/S ( 2) 17.6 ( 2) 0.65( 2).0( 2) MGB-F10W/S ( 4) 17.6 ( 4) 0.88( 4) 4.0( 4) MGB-F200W/S ( 6) 17.6 ( 6) 0.88( 6) 4.0( 6) Remark: TOCA: Total Over-current Amps. (A) MFA: Max. Fuse Amps. (A) LRA: Locked Rotor Amps. (A) RLA: Rated Locked Amps. (A) OFM: Outdoor Fan Motor. FLA: Full Load Amps. (A) KW: Rated Motor Input (KW) Electric Characteristics 25

26 10.Capacity Tables 10.1 Cooling: MGB-F(D)25W/R MCAC-ATSM Ambient temp. Difference of water inlet and outlet temp. Chilled water outlet temp. ( ) Capacity Water Power Capacity Water Power Capacity Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Tables

27 MGB-F(D)0W/R Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Water Power Capacity Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Tables 27

28 MCAC-ATSM MGB-F(D)5W/R Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Water Power Capacity Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Tables

29 MGB-F55W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Water Power Capacity Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Tables 29

30 MCAC-ATSM MGB-F60W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Water Power Capacity Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Tables

31 MGB-F65W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Water Power Capacity Power Capacity Water ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Power Capacity Tables 1

32 MCAC-ATSM MGB-F10W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Power Capacity Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Tables

33 MGB-F200W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Water Chilled water outlet temp. ( ) Power Capacity Water Water Power Capacity Power Capacity Water ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw Power Capacity Tables

34 MCAC-ATSM Heating: MGB-F(D)25W/R Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables

35 MGB-F(D)0W/R Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables 5

36 MCAC-ATSM MGB-F(D)5W/R Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables

37 MGB-F55W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables 7

38 MCAC-ATSM MGB-F60W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables

39 MGB-F65W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables 9

40 MCAC-ATSM MGB-F10W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables

41 MGB-F200W/S Ambient temp. Difference of water inlet and outlet temp. Capacity Hot water outlet temp. ( ) Water Power Capacity Water Power ( ) ( ) kw m /h kw kw m /h kw kw m /h kw kw m /h kw kw m /h kw Capacity Water Power Capacity Water Power Capacity Water Power Capacity Tables 41

42 11.Exploded View MGB-F25W/R 42 Exploded View

43 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Net Base ass'y Sealed board ass'y E-part box ass'y Double-pipe heat exchanger Cover ass'y Sealed board ass'y Main control board ass'y input pipe ass'y B Transformer Electronic expansion valve Contactor Input pipe ass'y A Relay Strainer Axial fan Three-phase power Input pipe ass'y A protection devices Electronic expansion valve Wire joint Tube-in-tube output pipe ass'y B Wire joint Pressure controller Wire joint, p Tube-in-tube output pipe ass'y A Wire joint Pressure controller Electrical box welding part way valve ass'y Drainage pan holder way valve E-Part box cover Ways valve solenoid Drainage pan Muffler Protecting water box Strainer Condenser ass'y Pipe joint Cover Pressure controller Sealed board ass'y Input pipe ass'y B Condenser ass'y Strainer Motor holder way valve ass'y Clapboard supporting board way valve ass'y Motor bracket bonding parts way valve Cover Ways valve solenoid Axial fan Muffler Top cover Strainer Middle partition plate Pipe joint Top cover Pressure controller Sealed board Suction pipe ass'y A Rear Cover Pressure controller Front cover Suction pipe ass'y About clapboard Pressure controller EEV solenoid Support board Discharge temp sensor Cover Compressor electric heater Cover board Cable Accumulator cylinder R Compressor Exploded View 4

44 MGB-F0W/R 44 Exploded View

45 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Net Sensor cable Sealed board ass'y Digital compressor connections Double-pipe heat exchanger E-part box ass'y Sealed board ass'y Wire joint Input pipe ass'y B Cover ass'y Electronic expansion valve Main control board ass'y Input pipe ass'y A Transformer Strainer Contactor Input pipe ass'y A Relay Electronic expansion valve Axial fan tube-in-tube output pipe Three-phase power protection ass'y B devices Pressure controller Wire joint Tube-in-tube output pipe ass'y A Wire joint Pressure controller Wire joint, p way valve ass'y Wire joint way valve Electrical box welding part Ways valve solenoid Drainage pan holder Muffler E-Part box cover Strainer Drainage pan Pipe joint Protecting water box Pressure controller Condenser ass'y Input pipe ass'y B Cover Strainer Sealed board ass'y way valve ass'y Condenser ass'y way valve ass'y Motor holder way valve Ground wire with jacket Ways valve solenoid Room temp sensor ass'y Muffler Motor bracket bonding parts Strainer Cover Pipe joint Washer Pressure controller Axial fan Suction pipe ass'y A Top cover Pressure controller Middle partition plate Suction pipe ass'y Top cover Pressure controller Sealed board Support board Rear Cover Cover Front cover Cover board About clapboard Base bracket ass'y EEV solenoid Installation bolt Discharge temp sensor hexagon nut Compressor electric heater Accumulator cylinder Spring washer Compressor Cable Bolt ass y R Base ass'y Exploded View 45

46 MGB-F5W/R 46 Exploded View

47 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Net Sensor cable Sealed board ass'y Sheath ground wire Double-pipe heat exchanger E-part box ass'y Sealed board ass'y Wire joint Input pipe ass'y B Cover ass'y Electronic expansion valve Main control board ass'y Input pipe ass'y A Transformer Strainer Contactor Input pipe ass'y A Relay Electronic expansion valve Axial fan tube-in-tube output pipe ass'y Three-phase power B protection devices Pressure controller Wire joint Tube-in-tube output pipe ass'y A Wire joint Pressure controller Wire joint, p way valve ass'y Wire joint way valve Electrical box welding part Ways valve solenoid Drainage pan holder Muffler E-Part box cover Strainer Drainage pan Pipe joint Protecting water box Pressure controller Condenser ass'y Input pipe ass'y B Cover Strainer Sealed board ass'y way valve ass'y Condenser ass'y way valve ass'y Motor holder way valve Valve installation bolt Ways valve solenoid Room temp sensor ass'y Motor bracket bonding Muffler parts Strainer Cover Pipe joint Spring washer Pressure controller Axial fan Suction pipe ass'y A Top cover Pressure controller Middle partition plate Suction pipe ass'y Top cover Pressure controller Sealed board Support board Rear Cover Cover Front cover Cover board About clapboard base bracket ass'y EEV solenoid Nut Discharge temp sensor Cross recessed pan head screw Compressor electric heater Hexagon head wood Accumulator cylinder screws Compressor Cable Digital compressor connections R Base ass'y Exploded View 47

48 MGB-D25W/R 48 Exploded View

49 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Net Bolt assembly Sealed board ass'y Nut Double-pipe heat exchanger E-part box ass'y Sealed board ass'y Capacitor clamp Input pipe ass'y B Cover ass'y Electronic expansion valve Main control board ass'y Input pipe ass'y A Transformer Strainer Contactor Input pipe ass'y A Relay Electronic expansion valve Axial fan Three-phase power Tube-in-tube output pipe ass'y B protection devices Pressure controller Wire joint Tube-in-tube output pipe ass'y A Wire joint Pressure controller Wire joint, p way valve ass'y Wire joint way valve Compressor Ways valve solenoid Drainage pan holder Muffler E-Part box cover Strainer Drainage pan Pipe joint Protecting water box Pressure controller Condenser ass'y input pipe ass'y B Cover Strainer Sealed board ass'y way valve ass'y Condenser ass'y way valve ass'y Motor holder way valve Side sealed board Clapboard supporting Ways valve solenoid board Motor bracket bonding Muffler parts Strainer Cover Total water temp. mouth Pipe joint components Pressure controller Axial fan Suction pipe ass'y A Top cover Pressure controller Middle partition plate D machines take over the assembly solenoid valve Top cover Electromagnetic Valve pipe III Sealed board Electromagnetic Valve pipe I Rear Cover Pressure-relief-valve Front cover Support board About clapboard Cover R Cover board EEV solenoid Sensor cable Room temp sensor ass'y Sheath ground wire Discharge temp sensor Compressor electric Digital compressor connections heater Outdoor coil temp sensor Accumulator cylinder ass'y Compressor Cable Resistance wire Wired controller Base ass'y Exploded View 49

50 MGB-D0W/R 50 Exploded View

51 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Digital compressor Net connections Sealed board ass'y Hexagon head wood screws Double-pipe heat exchanger E-part box ass'y Sealed board ass'y Capacitor clamp Input pipe ass'y B Cover ass'y Electronic expansion valve Main control board ass'y Input pipe ass'y A Transformer Strainer Contactor Input pipe ass'y A Relay Electronic expansion valve Axial fan Tube-in-tube output pipe ass'y Three-phase power B protection devices Pressure controller Wire joint Tube-in-tube output pipe ass'y A Wire joint Pressure controller Wire joint, p way valve ass'y Wire joint way valve Compressor Ways valve solenoid Drainage pan holder Muffler E-Part box cover Strainer Drainage pan Pipe joint Protecting water box Pressure controller Condenser ass'y Input pipe ass'y B Cover Strainer Sealed board ass'y way valve ass'y Condenser ass'y way valve ass'y Motor holder way valve Side sealed board Ways valve solenoid Clapboard supporting board Muffler Motor bracket bonding parts Strainer Cover Pipe joint Bolt assembly Pressure controller Axial fan Suction pipe ass'y A Top cover Pressure controller Middle partition plate D machines take over the assembly solenoid valve Top cover Electromagnetic Valve pipe III Sealed board Electromagnetic Valve pipe I Rear Cover Pressure-relief-valve Front cover Support board About clapboard Cover R Cover board EEV solenoid Valve installation bolt Room temp sensor ass'y Nut Discharge temp sensor sensor cable Compressor electric heater Outdoor coil temp sensor Accumulator cylinder ass'y Compressor Cable Sheath ground wire Wired controller Base ass'y Exploded View 51

52 MGB-D5W/R 52 Exploded View

53 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Digital compressor Net connections Sealed board ass'y Hexagon head wood screws Double-pipe heat exchanger E-part box ass'y Sealed board ass'y Capacitor clamp input pipe ass'y B Cover ass'y Electronic expansion valve Main control board ass'y Input pipe ass'y A Transformer Strainer Contactor Input pipe ass'y A Relay Electronic expansion valve Axial fan Tube-in-tube output pipe ass'y Three-phase power B protection devices Pressure controller Wire joint Tube-in-tube output pipe ass'y A Wire joint Pressure controller Wire joint, p way valve ass'y Wire joint way valve Compressor Ways valve solenoid Drainage pan holder Muffler E-Part box cover Strainer Drainage pan Pipe joint Protecting water box Pressure controller Condenser ass'y input pipe ass'y B Cover Strainer Sealed board ass'y way valve ass'y Condenser ass'y way valve ass'y Motor holder way valve Side sealed board Ways valve solenoid Clapboard supporting board Muffler Motor bracket bonding parts Strainer Cover Pipe joint Bolt assembly Pressure controller Axial fan Suction pipe ass'y A Top cover Pressure controller Middle partition plate D machines take over the assembly solenoid valve Top cover Electromagnetic Valve pipe III Sealed board Electromagnetic Valve pipe I Rear Cover Pressure-relief-valve Front cover Support board About clapboard Cover R Cover board EEV solenoid Valve installation bolt Room temp sensor ass'y Nut Discharge temp sensor Sensor cable Compressor electric heater Outdoor coil temp sensor Accumulator cylinder ass'y Compressor Cable Sheath ground wire Wired controller Base ass'y Exploded View 5

54 MGB-F55W/S 54 Exploded View

55 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Condenser fixed board ass'y Oil separator Condenser sealed board Shell-in-tube evaporator A unit condenser ass'y Cover A unit pipe Pole A unit condenser distributor ass'y E-part box door B unit condenser ass'y A unit suction pipe ass'y B unit pipe B unit suction pipe ass'y B unit condenser distributor ass'y A unit four-way valve ass'y Mid horizontal support way valve Fixed board Pressure controller Mid upright support Pressure controller Pipe fixing clamp B unit four-way valve ass'y A unit evaporator inlet pipe ass'y 4-way valve Electronic expansion valve Pressure controller B unit evaporator inlet pipe ass'y Pressure controller Electronic expansion valve Drainage pan ass'y Cover Middle partition plate Cover Net Triangle reinforcement ass'y Net Reinforcement board Top upright support Condenser sealed Base connection II ass'y Compressor Top cover Cover Axial fan Wiring terminal fixing board Motor Cover Mid horizontal support Cover Motor bracket ass'y Condenser sealed A Outdoor electrical box ass'y connection I ass'y Compressor electric Power protector heater Wire joint Ways valve solenoid Wire joint EEV coil Room temp sensor ass'y Wire joint T Wire joint, p Coil temp. sensor ass'y Transformer Temp.sensor ass'y AC contactor Coil temp sensor ass'y AC contactor Discharge temp sensor Relay R Main controller ass'y Exploded View 55

56 MGB-F60W/S 56 Exploded View

57 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 Condenser fixed board ass'y Shell-in-tube evaporator Condenser sealed board Cover A unit condenser ass'y Pole A unit pipe E-part box door A unit condenser distributor ass'y A unit suction pipe ass'y B unit condenser ass'y Low pressure switch B unit pipe B unit suction pipe ass'y B unit condenser distributor ass'y Low pressure switch Mid upright support A unit four-way valve ass'y Fixed board way valve Mid horizontal support Pressure controller Pipe fixing clamp Pressure controller A unit evaporator inlet pipe ass'y B unit four-way valve ass'y Electronic expansion valve way valve B unit evaporator inlet pipe ass'y Pressure controller Electronic expansion valve Pressure controller Cover Drainage pan ass'y Cover Middle partition plate Triangle reinforcement ass'y Net Reinforcement board Net Base Top upright support Condenser sealed Compressor connection II ass'y Cover Top cover Wiring terminal fixing board Axial fan Cover Motor Cover Mid horizontal support Outdoor electrical box ass'y A Motor bracket ass'y Condenser sealed Wire joint connection I ass'y Wire joint Compressor electric heater Wire joint EEV coil Wire joint, p Ways valve solenoid Room temp sensor ass'y Transformer T Relay Coil temp. sensor ass'y Main controller ass'y Temp.sensor ass'y AC contactor Coil temp sensor ass'y AC contactor Discharge temp sensor Power protector R Oil separator Exploded View 57

58 MGB-F65W/S 58 Exploded View

59 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 A combination of pieces of fixed plate condenser Shell and tube evaporator Condenser side board Cover Condenser ass'y A Pole Fluted pipe ass'y A E-part box door The condenser splitter assemblies A A unit suction pipe ass'y Condenser ass'y B Low pressure switch Fluted pipe ass'y B B unit suction pipe ass'y The condenser splitter assemblies B Low pressure switch A unit four-way valve Mid horizontal support ass'y Fixed board way valve Mid upright support Pressure controller Pipe fixing clamp Pressure controller B unit four-way valve Evaporator input pipe ass'y A ass'y Electronic expansion valve way valve Evaporator input pipe ass'y B Pressure controller Electronic expansion valve Pressure controller Cover Drainage pan ass'y Cover Middle partition plate Triangle reinforcement ass'y Net Reinforcement board Net Base Top upright support Compressor Condenser seal connector Cover Top cover Wiring terminal fixing board Axial fan Cover Motor Cover Mid horizontal support Outdoor electrical box ass'y Motor bracket ass'y Three-phase power protection devices Condenser seal connector Compressor electric Wire joint heater Wire joint Ways valve solenoid Wire joint EEV coil Room temp sensor ass'y Wire joint, p T Transformer Coil temp. sensor ass'y Relay Temp.sensor ass'y Main controller ass'y Coil temp sensor ass'y AC contactor Discharge temp sensor Oil separator R Exploded View 59

60 MGB-F10W/S 60 Exploded View

61 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 The top beam Pipe joint The condenser seal fittings II Fixed plate Iron nets fixed plate. II Pipe fixing clamp Protect net around Welding parts water tray pole Seal plate condenser Trough fixation plate A condenser components Left right panel by. II Condenser ass'y of A A flute-shaped tube assembly Iron nets fixed board I machine The condenser splitter Protect network and assemblies A A combination of pieces of fixed In the frame beams plate condenser Cover Motor bracket bonding parts Outdoor electrical box ass'y Motor E-part box Axial fan Electric installation board Fixed plate with the condenser B Air-cooled module control board components B condenser components Wire joint Condenser ass'y of B Relay B-flute-shaped tube assemblies The condenser splitter Compressor capacitor assemblies B way valve evaporator Transformer connection pipe ass'y of A Wire joint Pressure controller Wire joint, 5p Four-way valve ass'y of B AC contactor way valve Wire joint Pressor controller Control box door Pipe joint way valve evporator Cover connection pipe ass'y of B Cover Pressure controller Cover Suction pipe ass'y of A Base weld parts Pressure controller Compressor Suction pipe ass'y of B Storage tank bottom II weld installation Pressure controller Compressor installed base II weld Four-way valve ass'y of A Reinforcement board way valve Triangle reinforcement ass'y Pressor controller Piping support-unit Pressure controller Vapor-liquid separator Pipe joint Shell-tube evaporator I sealed connector condenser Storage tank bottom I weld parts installation Roof rack beams II Compressor installed base I weld Top cover Vertical beams in the frame I beam roof rack I left panel Vertical beam roof rack Evaporator input pipe ass'y Total water temp. mouth B2 components Electronic expansion valve Coil temp sensor ass'y Evaporator input pipe ass'y A2 Pipe temp. sensor assemblies Electronic expansion valve to take over Pipe temp. sensor assemblies Evaporator input pipe ass'y B1 Pipe temp. sensor assemblies Electronic expansion valve Room temp sensor ass'y T Exploded View 61

62 No. Part Name Qty BOM code No. Part Name Qty BOM code Evaporator input pipe ass'y A1 Coil temp sensor ass'y Electronic expansion valve Discharge temp. controller Four-way valve assembly of B1 Electric heater of compressor way valve Electric heater of compressor Pressure controller Four-way valve coil Pressure controller Four-way valve coil Pipe joint Coil of EXV Four-way valve assembly of A1 R way valve Pipe temp. sensor Pressure controller Wired controller MGB-F200W/S 62 Exploded View

63 No. Part Name Qty BOM code No. Part Name Qty BOM code 1 pole Pressure controller Protect net around Evaporator output pipe ass'y F Iron nets fixed plate. II Pressure controller Vertical beams in the frame Evaporator output pipe ass'y D The top beam Pressure controller The condenser seal fittings II Base parts Vertical beam roof rack II left-right panel The condenser seal fittings II beam II Top beam weld parts I left-right panel Top cover panel fixed component II Back panel II Triangle reinforcement ass'y condenser output pipe II Trough II wire frame Trough cover II E-control box plate ISB Evaporator input pipe ass'y B E-control box plate III Electronic expansion valve Back panel I Evaporator input pipe ass'y A E-control box plate II Electronic expansion valve E-control box door Evaporator input pipe ass'y C E-control box ass'y Electronic expansion valve E-control box weld parts Condensor Output pipe ass'y I Electrical equipment plate I Condensor Output pipe ass'y C Electrical equipment plate II Condensor Output pipe ass'y D Wire joint, 5p Shell-tube evaporator Wire joint Trough Wire joint Trough cover I Transformer panel fixed component Relay Pipe fixing clamp Compressor capacitor way valve ass'y AC contactor way valve Pipe joint Pressure controller Pipe joint Pipe joint outdoor main control panel ass'y Separator phase power protector In the frame beams Condenser seal panel front panel Compressor suction pipe ass'y Beam I Pressure controller Iron nets fixed plate. II Condensor input pipe II Protect network and Compressor installed base Condensor input pipe ass'y I weld B condenser components Compressor Fixed plate with the condenser B Evaporator input pipe ass'y F Axial fan Electronic expansion valve Motor bracket bonding parts Throttling parts fixed panel A combination of pieces of fixed plate condenser Evaporator input pipe ass'y D A condenser components Electronic expansion valve Pipe fixing clamp Evaporator input pipe ass'y E Welding parts water tray Electronic expansion valve wire frame Electric heater of compressor Pipe fixing clamp Target -volume controller Evaporator output pipe Total water temp. mouth ass'y A components Pressure controller Wired controller Evaporator output pipe ass'y B Motor Pressure controller Motor Exploded View 6

64 No. Part Name Qty BOM code No. Part Name Qty BOM code 7 Evaporator output pipe ass'y C Discharge temp. controller Pressure controller Four-way valve coil Four-way valve ass'y Coil of EXV way valve Coil temp sensor ass'y Pressure controller Coil temp sensor ass'y Pipe joint Coil temp sensor ass'y Evaporator output pipe ass'y F Room temp sensor ass'y T Exploded View

65 12.Trouble Shooting 12.1 Failure &protection codes of the module 25/0/5kw module No, Code Trouble 1 E0 Water detection error (The third time) 2 E1 Power phase sequence error E2 Communication error 4 E Total water outlet temp. sensor error 5 E4 Outlet water temp. sensor error in shell and tube exchanger 6 E5 Pipe temp. sensor error happens to condenser A 7 E6 Pipe temp. sensor error happens to condenser B 8 E7 Outdoor ambient temp. sensor error 9 E8 Air discharge temp. sensor error of digital compressor in system A 10 E9 Water detection error (The first and second times) 11 EA Main unit detect that auxiliary unit s quantity have decreased 12 EB Freeze-proof temp. sensor 1 error in shell and tube heat exchanger 1 EC Wired controller did not found out any on-line module unit 14 ED Wired controller and module unit communication error 15 Ed 1-hour consecutive 4-times PE protection happens 16 EE Wired controller and computer communication error 17 EF Inlet water temp. sensor error 18 P0 High pressure or air discharge temp. protection error in system A 19 P1 Low pressure protection happens to system A 20 P2 High pressure or air discharge temp. protection in system B 21 P Low pressure protection happens to system B 22 P4 Current protection happens to system A 2 P5 Current protection happens to system B 24 P6 Condenser high pressure protection happens to system A 25 P7 Condenser high pressure protection happens to system B 26 P8 Air discharge temp. sensor of digital compressor in system A 27 Pb System freeze-proof protection 28 PE Low temp. protection of double-pipe heat exchanger 29 F1 EEPROM failure 0 F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved) Trouble Shooting 65

66 55/60/65kw module No, Code Trouble 1 E0 Water detection error (The third time) 2 E1 Power phase sequence error E2 Communication error 4 E Total water outlet temp. sensor error 5 E4 Outlet water temp. sensor error in shell and tube exchanger 6 E5 Pipe temp. sensor error happens to condenser A 7 E6 Pipe temp. sensor error happens to condenser B 8 E7 Outdoor ambient temp. sensor error 9 E8 Air discharge temp. sensor error of digital compressor in system A 10 E9 Water detection error (The first and second times) 11 EA Main unit detect that auxiliary unit s quantity have decreased 12 EB Freeze-proof temp. sensor 1 error in shell and tube exchanger 1 EC Wired controller did not found out any on-line module unit 14 ED Wired controller and module unit communication error 15 Ed 1-hour consecutive 4-times PE protection happens 16 EE Wired controller and computer communication error 17 EF Inlet water temp. sensor error 18 P0 High pressure or air discharge temp. protection error in system A 19 P1 Low pressure protection happens to system A 20 P2 High pressure or air discharge temp. protection in system B 21 P Low pressure protection happens to system B 22 P4 Current protection happens to system A 2 P5 Current protection happens to system B 24 P6 Condenser high pressure protection happens to system A 25 P7 Condenser high pressure protection happens to system B 26 P8 Air discharge temp. sensor of digital compressor in system A 27 P9 Protection of outlet and inlet water temp. difference 28 PA Starting protection of low-temp cooling 29 Pb System freeze-proof protection 0 PC (Reserved failure code) 1 PE Low temp. protection of shell and tube heat exchanger 2 F1 EEPROM failure F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved) 66 Trouble Shooting

67 10kw module No, Code Trouble 1 E0 Water detection error (The third time) 2 E1 Power phase sequence error E2 Communication error 4 E Total water outlet temp. sensor error 5 E4 Outlet water temp. sensor error in shell and tube exchanger 6 E5 Pipe temp. sensor error in condenser A 7 E6 Pipe temp. sensor error in condenser B 8 E7 Outdoor ambient temp. sensor error 9 E8 Air discharge temp. sensor error of digital compressor in system A 10 E9 Water detection error (The first and second times) 11 EA Main unit detect that auxiliary unit s quantity have decreased 12 EB Freeze-proof temp. sensor 1 error in shell and tube exchanger 1 EC Wired controller did not found out any on-line module unit 14 ED Wired controller and module unit communication error 15 Ed 1-hour consecutive -times PE protection happens 16 EE Wired controller and computer communication error 17 EF Inlet water temp. sensor error 18 P0 High pressure or air discharge temp. protection error in system A 19 P1 Low pressure protection happens to system A 20 P2 High pressure or air discharge temp. protection in system B 21 P Low pressure protection happens to system B 22 P4 Current protection happens to system A 2 P5 Current protection happens to system B 24 P6 Condenser high pressure protection happens to system A 25 P7 Condenser high pressure protection happens to system B 26 P8 Air discharge temp. sensor of digital compressor in system A 27 P9 Protection of outlet and inlet water temp. difference 28 PA Starting protection of low-temp cooling 29 Pb System freeze-proof protection 0 PC (Reserved failure code) 1 PE Low-temp. protection of shell and tube heat exchanger 2 F1 EEPROM failure F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved) Trouble Shooting 67

68 200kw module No, Code Trouble 1 E0 Water detection error (The third time) 2 E1 Power phase sequence error E2 Communication error 4 E Total water outlet temp. sensor error 5 E4 Outlet water temp. sensor error in shell and tube exchanger 6 E5 Pipe temp. sensor error in condenser A 7 E6 Pipe temp. sensor error in condenser B 8 E7 Outdoor ambient temp. sensor error or power protection 9 E8 (Reserved failure code) 10 E9 Water detection error (The first and second times) 11 EA Main unit detect that auxiliary unit s quantity have decreased 12 Eb Freeze-proof temp. sensor 1 in shell and tube exchanger error 1 EC Wired controller did not found out any on-line module unit 14 Ed 1-hour consecutive -times PE protection happens 15 EF Inlet water temp. sensor error 16 P0 High pressure or air discharge temp. protection error in system A 17 P1 Low pressure protection happens to system A 18 P2 High pressure or air discharge temp. protection in system B 19 P Low pressure protection happens to system B 20 P4 Current protection happens to system A 21 P5 Current protection happens to system B 22 P6 Condenser high pressure protection happens to system A 2 P7 Condenser high pressure protection happens to system B 24 P8 Air discharge temp. sensor of digital compressor in system A 25 P9 Protection of outlet and inlet water temp. difference 26 PA Starting protection of low temp cooling 27 Pb System freeze-proof protection 28 PC (Reserved failure code) 29 PE Low temp. protection of shell and tube heat exchanger 0 F1 EEPROM failure 1 F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved) 68 Trouble Shooting

69 12.2 Troubles and Solutions Troubles Possible reasons Solutions Over high air discharge pressure (Cooling operation). Over low air discharge pressure(cooling operation). Over high air suction pressure (Cooling operation) Over low air suction pressure (Cooling operation). Over high air discharge pressure (Heating operation). Over low air discharge pressure (Heating operation). Over high air suction pressure (Heating operation) Over low air suction pressure (Heating operation). Compressor stops because of freeze-proof protection (Cooling operation). Compressor stops because of high pressure protection. Compressor stops because of motor overload. Air or other non-condensing gas still in the system. Fins in the condenser are dirty or foreign substance blocking fins. Insufficient chilling air volume or condenser fan error. Excessive high air suction pressure. Excessive refrigerant charging volume. Over high ambient temp. Surrounding temp. is lower. Refrigerant leak or insufficient. Low suction pressure. Refrigerant over-charged. High temp. of the inlet chilled-water. Insufficient water. Low temp. of inlet chilled-water. Refrigerant leak or insufficient. Scaling in the evaporator. Insufficient water. Air or other non-condensing gas still in the system. Scaling in water side of heat exchanger. Over high temp. in chilling water inlet. Over low temp. of chilling water. Refrigerant leakage or insufficient refrigerant volume. Excessive low air suction pressure Over heat air in the side of air heat exchanger Excessive refrigerant charging volume. Insufficient refrigerant charging volume. Insufficient air volume. Air loop short circuit. Insufficient frost-removal operation. Insufficient chilling water volume. Gas still in water loop. Thermal resistor error. Over high air discharging pressure. High pressure switch error. Over high air discharging pressure and air suction pressure. High voltage or low voltage, signal phase or phase unbalance. Discharge gas from refrigerant charging inlet. Re-vacuum the system if necessary. Clean condenser fins. Check and repair the condenser fan, recover the normal operation. Clean the heat exchanger. Replace the EEV,capillary, filter. Discharge the excessive refrigerant. Check ambient temp. Measure the surrounding Temp. Leak-hunting or recharging. Refer to the low suction pressure Discharge the additional refrigerant. Check the heat insulation of water pipeline. Measure the temp. difference between inlet /outlet water, adjust the water. Check installation. Leak-hunting or recharging. Descaling. Check temp. difference between water inlet and outlet, and adjust the water volume. Discharge gas from refrigerant charging inlet. Re-vacuum the system if necessary. Descaling. Check water temp. Check chilling water temp. Test leakage or charge sufficient refrigerant to the system. Add refrigerant. Check the EEV,capillary, filter or pressure controller. Check ambient temp. around it. Discharge the excessive refrigerant. Charge sufficient refrigerant to the system Check fan rotating direction Reason about remove air short-circuit Error comes out from 4-way valve or thermal resistor. Replace a new one if necessary. Error comes from pump or -type water volume control. Check and repair or replace a new one. Discharge air. Upon error have been confirmed, please replace a new one. Discharge part of refrigerant. Clean the heat exchanger. Check the EEV,capillary, filter. Upon error have been confirmed, please replace a new one. Clean the heat exchanger. Check the EEV,capillary, filter. Confirm voltage not higher or lower than the rated voltage +/-10%. Trouble Shooting 69

70 Short circuit comes out from motor or connecting interface. Confirm resistors at motor are connected corresponding to terminals. Compressor stops because of integrate temp. sensor or air discharge temp. protection. Over high or over low voltage. Over high air discharging pressure or excessive low air suction pressure. Component error. Confirm voltage not higher or lower than the rated voltage +/-10%. Adjust refrigerant charge volume. Clean the heat exchanger. Check the EEV,capillary, filter. Check the integrated temp. sensor after motor is cool down. Filter of electronic expanding valve is blocked. Compressor stops Low voltage switch error. because of low pressure Protection. Excessive low air suction pressure. Abnormal noise gives out form compressor. Liquid refrigerant s into compressor from evaporator result in liquid slugging. Aging of compressor. Over current relay trip up, fuse burnt out. Control circuit without power though. High voltage or low voltage protection. Replace a new filter. If the switch is defective, please replace a new one. Add the refrigerant. Clean the heat exchanger. Check the EEV,capillary, filter. Adjust refrigerant charge volume. Replace a new compressor. Replace damaged assembly. Check the wring of control system. Reference to mention in above the parts of air suction and discharge pressure error. Compressor can t start. Air side heat exchanger excessive frost. Coils inside contactor are burnt out. Wrong connection of phase sequence. Water system error and volume controller short connection. Error signal delivered from wired controller. 4-way valve or thermal resistor error. Air loop short circuit. Replace damaged assembly. Re-connect and adjust the any 2 wires among phases. Check water system. Find out the error type and carry out the corresponding measure to settle. Check the running state. Replace a new one if necessary. Settle the short circuit of air discharge. With noise. Fixing screws at panel are loosen. Fix up all assemblies. 70 Trouble Shooting

71 1.Installation 1.1 Unit Installation Transportation The angle of inclination should not be more than 15º when carrying the unit, to avoid overturn of the unit. a. Rolling handling: several rolling rods of the same size are placed under the base of the unit, and the length of each rod must be more than the outer frame of the base and suitable for balancing of the unit. b. Lifting: the strength lifting rope (belt) can bear should be 4 times the weight of the unit. Check the lifting hook and ensure that it is firmly attached to the unit, and the lifting angle should be more than 60º. To avoid damages to the unit, the contact position of the unit and lifting rope should be provided with an at least 50mm thick wood block, cloth or hard paper. Any person is not allowed to stand below the unit when lifting it. 25/0/5kw module Installation 71

72 50/55/60kw module 10kw module 72 Installation

73 200kw module Installation space Requirements of arrangement space of the unit 1) To ensure adequate air entering the condenser, the influence of descending air caused by the high-rise buildings around upon the unit should be taken into account when installing the unit. 2) If the unit is installed where the ing speed of air is high, such as on the exposed roof, the measures including sunk fence and Persian blinds can be taken, to prevent the turbulent from disturbing the air entering the unit. If the unit needs to be provided with sunk fence, the height of the latter should not be more than that of the former; if Persian blinds are required, the total loss of static pressure should be less than the static pressure outside the fan. The space between the unit and sunk fence or Persian blinds should also meet the requirement of the minimum installation space of the unit. ) If the unit needs to operate in winter, and the installation site may be covered by snow, the unit should be located higher than the snow surface, to ensure that air s through the coils smoothly. 25/0/5kw module Installation 7

74 50/55/60kw module 10kw module 200kw module 74 Installation

75 The recommend space parameter Module Installation space (mm) A B C D E MGB-F(D)25W/R MGB-F(D)0W/R MGB-F(D)5W/R MGB-F55W/S MGB-F60W/S MGB-F65W/S MGB-F10W/S MGB-F200W/S Space requirements for parallel installation of multiple modular units To avoid back of the air in the condenser and operational faults of the unit, the parallel installation of multiple modular units can follow the direction A and D as shown in the figure above, the spaces between the unit and the obstacle are given in the figure above, and the space between adjacent modular units should not be less than 00mm; the installation can also follow the direction B and C as shown in the figure above, the spaces between the unit and the obstacle are given in the figure above, and the space between adjacent modular units should not be less than 600mm; the installation can also follow the direction combination of A and D, and B and C, the spaces between the unit and the obstacle are given in the figure above, the space between adjacent modular units in the direction A and D should not be less than 00mm, and the space between adjacent modular units in the direction B and C should not be less than 600mm. If the spaces mentioned above cannot be met, the air passing from the unit to the coils may be restricted, or back of air discharge may occur, and the performance of the unit may be affected, or the unit may fail to operate Installation foundation The unit should be located on the horizontal foundation, the ground floor or the roof which can bear operating weight of the unit and the weight of maintenance personnel. Refer to the operating weight parameters in specification table. If the unit is located so high that it is inconvenient for maintenance personnel to conduct maintenance, the suitable scaffold can be provided around the unit. The scaffold must be able to bear the weight of maintenance personnel and maintenance facilities. The bottom frame of the unit is not allowed to be embedded into the concrete of installation foundation. Location drawing of installation foundation of the unit (unit: mm) 25/0/5kw module Installation 75

76 50/55/60kw module 10kw module 200kw module Installation of damping devices Damping devices must be provided between the unit and its foundation. By means of the Φ15mm diameter installation holes on the steel frame of the unit base, the unit can be 76 Installation

77 fastened on the foundation through the spring damper. See figure above (Schematic diagram of installation dimension of the unit) for details about center distance of the installation holes. The damper does not go with the unit, and the user can select the damper according to the relevant requirements. When the unit is installed on the high roof or the area sensitive to vibration, please consult the relevant persons before selecting the damper. Installation steps of the damper Step 1 2 Content Make sure that the flatness of the concrete foundation is within ±mm, and then place the unit on the cushion block. Raise the unit to the height suitable for installation of the damping device. Remove the clamp nuts of the damper. Place the unit on the damper, and align the fixing bolt holes of the damper with the fixing holes on the unit base. 4 Return the clamp nuts of the damper to the fixing holes on the unit base, and tighten them into the damper. 5 Adjust the operational height of the damper base, and screw down the leveling bolts. Tighten the bolts by one circle to ensure equal height adjustment variance of the damper. 6 The lock bolts can be tightened after the correct operational height is reached. 1.2 Water System Installation Notice: After the unit is in place, chilled water pipes can be laid. The relevant installation regulations should be abided with when conducting connection of water pipes. The pipelines should be free of any impurity, and all chilled water pipes must conform to local rules and regulations of pipeline engineering Connection requirements of chilled water pipes a. All chilled water pipelines should be thoroughly flushed, to be free of any impurity, before the unit is operated. Any impurity should not be flushed to or into the heat exchanger. b. Water must enter the heat exchanger through the inlet; otherwise the performance of the unit will decline. c. The inlet pipe of the evaporator must be provided with a water switch, to realize -break protection for the unit. Both ends of the water switch must be supplied with horizontal straight pipe sections whose diameter is 5 times that of the inlet pipe. The water switch must be installed in strict accordance with Installation & Regulation Guide for Water switch. The wires of the water switch should be led to the electric cabinet through shielded cable. The working pressure of the water switch is 1.0MPa, and its interface is 1 inch in diameter. After the pipelines are installed, the water switch will be set properly according to the rated water of the unit. d. The pump installed in the water pipeline system should be equipped with starter. The pump will directly press water into the heat exchanger of the water system. Installation 77

78 e. The pipes and their ports must be independently supported but should not be supported on the unit. f. The pipes and their ports of the heat exchanger should be easy to disassemble for operation and cleaning, as well as inspection of port pipes of the evaporator. g. The evaporator should be provided with a filter with more than 40 meshes per inch at site. The filter should be installed near to the inlet port as much as possible, and be under heat preservation. h. The by-pass pipes and by-pass valves as shown in the figure of Connection drawing of pipeline system must be mounted for the heat exchanger, to facilitate cleaning of the outside system of water passage before the unit is adjusted. During maintenance, the water passage of the heat exchanger can be cut off without disturbing other heat exchangers. i. The flexible ports should be adopted between the interface of the heat exchanger and on-site pipeline, to reduce transfer of vibration to the building. j. To facilitate maintenance, the inlet and outlet pipes should be provided with thermometer or manometer. The unit is not equipped with pressure and temp. instruments, so they need to be purchased by the user. k. All low positions of the water system should be provided with drainage ports, to drain water in the evaporator and the system completely; and all high positions should be supplied with discharge valves, to facilitate discharging air from the pipeline. The discharge valves and drainage ports should not be under heat preservation, to facilitate maintenance. l. All possible water pipes in the system to be chilled should be under heat preservation, including inlet pipes and flanges of the heat exchanger. m. The outdoor chilled water pipelines should be wrapped with an auxiliary heating belt for heat preservation, and the material of the auxiliary heat belt should be PE, EDPM, etc., with thickness of 20mm, to prevent the pipelines from freezing and thus cracking under low temp.. The power supply of the heating belt should be equipped with an independent fuse. n. When the ambient temp. is lower than 2, and the unit will be not used for a long time, water inside the unit should be drained. If the unit is not drained in winter, its power supply should not be cut off, and the fan coils in the water system must be provided with three-way valves, to ensure smooth circulation of the water system when the anti-freezing pump is started up in winter. o. The common outlet pipelines of combined units should be provided with mixing water temp. sensor. Warning: For the water pipeline network including filters and heat exchangers, dreg or dirt may seriously damages the heat exchangers and water pipes. The installation persons or the users must ensure the quality of chilled water, and de-icing salt mixtures and air should be excluded from the water system, since they may oxidize and corrode steel parts inside the heat exchanger Connection drawing of pipeline system 25/0/5kw module 78 Installation

79 55/60/65kw module 10 kw module Installation 79

80 200kw module 1.2. Water quality Water quality control When industrial water is used as chilled water, little furring may occur; however, well water or river water, used as chilled water, may cause much sediment, such as furring, sand, and so on. Therefore, well water or river water must be filtered and softened in softening water equipment before ing into chilled water system. If sand and clay settle in the evaporator, circulation of chilled water may be blocked, and thus leading to freezing accidents; if hardness of chilled water is too high, furring may occur easily, and the devices may be corroded. Therefore, the quality of chilled water should be analyzed before being used, such as PH value, conductivity, concentration of chloride ion, concentration of sulfide ion, and so on. Applicable standard of water quality for the unit PH value 7~ 8.5 Total hardness Conductivity Sulfide ion Chloride ion Ammonia ion Sulfate ion Silicon Iron content Sodium ion <50ppm <20μV/cm(25 ) No <50ppm No <50ppm <0ppm <0.ppm No requirement Calcium ion <50ppm Installation & regulation guide for water switch Please carefully check switches before conducting installation of the water switch. Packing should be in good condition, and the appearance should be free of damage and deformation. If any problem, please contact the manufacturer. Flow switches can be installed in the horizontal pipeline or the vertical pipeline with upward ing direction but cannot be mounted in the pipeline with downward ing direction. The inlet water of gravity should be taken into account when switches are installed in the pipeline with upward ing direction. 80 Installation

81 Water switch must be installed on a section of straight-line pipeline, and its both ends must be supplied with straight-line pipes whose length is at least 5 times diameter of the pipe. In the meanwhile, the fluid ing direction in the pipeline must be consistent with the direction of arrow on the controller. The connection terminal should be located where wiring connection can be easily done. Pay attention to the following items when conducting installation and wire connection: a. Collision of the wrench with the soleplate of the switch is prohibited, since such collision may cause deformation and failure of the switch. b. To avoid electric shock and damages to the devices, the power supply should be cut off, when wires are connected or adjustment is done. c. When wiring connection is conducted, adjustment of other screws except connection terminals of micro switches and ground screws is prohibited. In the meanwhile, over great force should not applied when wires of micro switches are connected, otherwise micro switches may suffer displacement, thus leading to failure of switches. d. Special grounding screws should be used for earth connection. Bolts should not be installed or removed at will; otherwise switches may suffer deformation and failure. e. Flow switches have been set at minimal value before leaving the factory. They should not be adjusted below the setting value at the factory, or they may suffer failure. After installing switches, please press the switch lever several times to check them. When the lever is found not to respond with clatter, rotate the screw in a clockwise direction, until clatter occurs. f. Be sure to determine the model of target slice according to the rated of the unit, the diameter of the outlet pipe and the adjustment range of the target slice of the switch. Besides, the target slice should not contact with other restrictors in the pipeline or on the inner wall of the pipeline, or the switch cannot be reset normally. Determine whether the switch and the system connected with it are in good operation according to the measured value by meter, namely, when the measured value on meter is less than 60% of rated water of the unit, the water switch should be cut off and observed for working periods, and it should be covered with switch shell timely. Schematic diagram of water switch Installation of water system pipeline for 25/0/5kw module Installation of single-module water system pipeline Installation 81

82 Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode) n :the module quantity, max 16 2) Installation mode II n :the module quantity, max Installation of water system pipeline for 55/60/65kw module Installation of single-module water system pipeline 82 Installation

83 Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode) n :the module quantity, max 6 2) Installation mode II n : the module quantity, max 6 less than 6 modules less than 6 modules ) Installation mode III (recommended installation mode) n : the module quantity, max 16 Installation mode A: less than 16 modules Installation 8

84 4) Installation mode IV n : the module quantity, max16 No.n module No.(n-1) address Installation mode B: less than 16 modules No.(n-1) module No.(n-2) address No.1 module No.0 address Drill dead hole at the position, and move the total effluent temperature sensor at No.0 address to the position No.(n-2) module No.(n-) module No.2 module Water switch No.(n-) address No.(n-4) address No.1 address Pump n : the module quantity, max12 Installation mode A: less than 16 modules 84 Installation

85 No.n module No.(n-2) module No.1 module No.(n-1) address No.(n-) address No.0 address Drill dead hole at the position, and move the total water outlet temperature sensor at No.0 address to the position Water switch No.(n-1) module No.(n-) module No.2 module No.(n-2) address No.(n-4) address No.1 address Pump 5) Installation mode V n : the module quantity, max8 m : the module quantity, max8 Installation mode A: less than 12 modules Installation mode A: less than 16 modules n : the module quantity, max6 m : the module quantity, max6 Installation 85

86 Installation mode B: less than 12 modules Installation of water system pipeline for 10kw module Installation of single-module water system pipeline Electric control box Water intlet Water outlet Total water outlet temp sensor Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode) n : the module quantity, max8 86 Installation

87 No.1 unit No.(n-1) unit No.n unit (n 8) No.0 address(main unit) No.(2n-) address No.(2n-1) address No.1 address No.(2n-4) address No.(2n-2) address Water switch Pump Drill dead hole at the position, and move the total effluent temperature sensor at No.0 address to the position Installation mode B: less than 8 modules 2) Installation mode II n : the module quantity, max8 No.n unit (n 8) No.(n-1) unit No.1 unit No.(2n-1) address No.(2n-) address No.0 address(main unit) No.(2n-2) address No.(2n-4) address No.1 address Pump Drill dead hole at the position, and move the total effluent temperature sensor at No.0 address to the position Installation mode B: less than 8 modules Water switch Installation of water system pipeline for 200kw module Installation of single-module water system pipeline Installation 87

88 Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode) n : the module quantity, max5 a. Installation mode I (recommended installation mode) No.1 unit No.(n-1) unit No.n unit (n 5) No.0 address(main unit) No.(n-4) address No.(n-1) address No.1 address No.(n-5) address No.(n-2) address No.2 address No.(n-6) address No.(n-) address Water switch Pump b. Installation mode II No.n unit (n 5) No.(n-1) address No.(n-2) address No.(n-) address Drill dead hole at the position, and move the total effluent temperature sensor at No.0 address to the position (less than 5 modules) No.(n-1) unit No.1 unit No.(n-4) address No.0 address(main unit) No.(n-5) address No.1 address No.(n-6) address No.2 address (less than 5 modules) Drill dead hole at the position, and move the total effluent temperature sensor at No.0 address to the position Water switch Pump Table of diameter parameters of main inlet and outlet pipes for 25/0/5kw module Unit model x quantity Total inlet and outlet water pipe diameter Unit model x quantity DN DN Total inlet and outlet water pipe diameter DN DN Installation

89 DN Table of diameter parameters of main inlet and outlet pipes for 55/60/65kw module Unit model x quantity Total inlet and outlet water pipe diameter Unit model x quantity DN DN DN DN Table of diameter parameters of main inlet and outlet pipes for 10kw module Total inlet and outlet water pipe diameter DN125 DN150 DN200 Unit model x quantity Total inlet and outlet water Total inlet and outlet water Unit model x quantity pipe diameter pipe diameter 10 1 DN DN DN DN DN DN DN DN200 Table of diameter parameters of main inlet and outlet pipes for 200kw module Unit model x quantity Total inlet and outlet water Total inlet and outlet water Unit model x quantity pipe diameter pipe diameter DN DN DN DN DN125 Please pay attention to the following items when installing multiple modules: Each module corresponds to an address code which cannot be repeated. Installation 89

90 Main water outlet temp. sensing bulb, water switch and auxiliary electric heater are under control of the main module. One wired controller and one water switch are required and connected on the main module. The unit can be started up through the wired controller only after all addresses are set and the aforementioned items are determined. The wired controller is 50m away from the outdoor unit. 1. Wiring Installation All wiring installation should be done by qualified person Precautions: 1. The air-conditioner should apply special power supply, whose voltage should conform to rated voltage. 2. Wiring construction must be conducted by the professional technicians according to the labeling on the circuit diagram.. Only use the electric components specified by our company, and require installation and technical services from the manufacturer or authorized dealer. If wiring connection fails to conform to electric installation norm, failure of the controller, electronic shock, and so on may be caused. 4. The connected fixed wires must be equipped with full switching-off devices with at least mm contact separation. 5. Set leakage protective devices according to the requirements of national technical standard about electric equipment. 6. After completing all wiring construction, conduct careful check before connecting the power supply. 7. Please carefully read the labels on the electric cabinet. 8. The user s attempt to repair the controller is prohibited, since improper repair may cause electric shock, damages to the controller, and so on. If the user has any requirement of repair, please contact the maintenance center Power supply specification Model Items Outdoor power supply Power supply Manual switch Fuse Wiring MGB-F25W/R MGB-F0W/R MGB-F5W/R 80~415V N~50Hz 50A 6A 10mm 2 (<0m) MGB-D25W/R MGB-D0W/R MGB-D5W/R 80~415V N~50Hz 50A 6A 10mm 2 (<0m) MGB-F55W/S MGB-F60W/S MGB-F65W/S 80 N~50Hz 125A 100A MGB-F10W/S 80V N~50Hz 250A 200A MGB-F200W/S 80V N~50Hz 400A 50A 16mm 2 (<20m) Base on the actual distance of the wire, more than 5 mm 2 for each module Base on the actual distance of the wire, more than 5 mm 2 for each module 1.. Requirements of wiring connection No additional control components are required in the electric cabinet (such as relay, and so on), and the power supply and control wires not connected with the electric cabinet are not allowed to go through the electric box. Otherwise, electromagnetic interference may cause failure of the unit and control components and even damages to them, which thus lead to protective failure. All cables led to the electric box should be supported independently but by the electric box. 90 Installation

91 The strong current wires generally pass the electric box, and 220V alternating current may also pass the control board, so wiring connection should conform to the principle of separation of strong current and weak current, and the wires of power supply should be kept more than 100 mm away from the control wires. Only use V N~ 50Hz rated power supply for the unit, and the maximum allowable range of voltage is 42V-418V. All electric wires must conform to local wiring connection norm. The suitable cables should be connected to power supply terminal through wiring connection holes at the bottom of the electric cabinet. According to Chinese standard, the user is responsible for providing voltage and current protection for the input power supply of the unit. All power supplies connected to the unit must pass one manual switch, to ensure that the voltages on all nodes of electric circuit of the unit are released when the switch is cut off. The cables of correct specification must be used to supply power for the unit. The unit should use independent power supply, and the unit is not allowed to use the same power supply together with other electric devices, to avoid over-load danger. The fuse or manual switch of the power supply should be compatible with working voltage and current of the unit. In case of parallel connection of multiple modules, the requirements of wiring connection mode and configuration parameters for the unit are shown in the following figure. Some connection ports in the electric box are switch signals, for which the user needs to provide power, and the rate voltage of the power should be V AC. The user must be aware that all power supplies they provided should be obtained through power circuit breakers (provided by the user), to ensure that all voltages on the nodes of the provided power supply circuit are released when the circuit breakers are cut off. All inductive components provided by the user (such as coils of contactor, relay, and so on) must be suppressed with standard resistance-capacitance suppressors, to avoid electromagnetic interference, thus leading to failure of the unit and its controller and even damages to them. All weak current wires led to the electric box must apply shielded wires, which must be provided with grounding wires. The shield wires and power supply wires should be laid separately, to avoid electromagnetic interference. The unit must be provided with grounding wires, which are not allowed to be connected with the grounding wires of gas fuel pipelines, water pipelines, lightning conductors or telephones. Improper earth connection may cause electric shock, so please check whether earth connection of the unit is firm or not frequently. Note: 1) 25/0/5kw module only 16 modular units can be combined at most. 2) 55/60/65kw module only 16 modular units can be combined at most. ) 10kw module only 8 modular units can be combined at most. 4) 200kw module only 5 modular units can be combined at most. Installation 91

92 Power supply ( V~60Hz) Power supply ( V~60Hz) MCAC-ATSM Wiring steps Step 1 Content Check the unit and ensure that it is connected with grounding wires correctly, to avoid leakage, and the grounding devices should be mounted in strict accordance with the requirements of electrical engineering rules. The grounding wires can prevent electric shock. 2 The control box of the main power switch must be mounted in a proper position. Wiring connection holes of the main power should be provided with glue cushion. 4 The main power and neutral wires and grounding wires of power supply are led into the electric box of the unit. 5 The wires of the main power must pass the bonding clamp. 6 Wires should be connected firmly to the connection terminals L1, L2, L, N and PE. 7 Phase sequences must be consistent when the wires of the main power. 8 9 The main power should be located out of easy reach of non-professional maintenance personnel, to avoid mal-operation and improve safety. Connection of control wires of water switches: the wire leads (prepared by the user) of water switches are connected to the connection terminals W1 and W2 of the main unit. 10 Connection of control wires of auxiliary electric heaters: the control wires of AC contactor of the auxiliary electric heater must pass the connection terminals H1 and H2 of the main unit, as shown. H2 10 H1 Overcurrent relay Control coil of AC contactor Connection of control wires of pump: the control wires of AC contactor of the pump must pass the connection terminals P1 and P2 of the main unit, as shown. P2 11 P1 Overcurrent relay Switch (For trial run of pump) Control coil of AC contactor 12 The connection way of the wired controller connects with every signal wires from package units: signal wires P, Q, E are connected in the same way of main wires connection method and accordingly connect to the terminals P, Q, E in the wired controller. 92 Installation

93 14.Commissioning 1. Preparation After the water system pipeline is flushed several times, please make sure that the purity of water meets the requirements; the system is re-filled with water and drained, and the pump is started up, then make sure that water and the pressure at the outlet meet the requirements. The unit is connected to the main power 12 hours before being started up, to supply power to the heating belt and pre-heat the compressor. Inadequate pre-heating may cause damages to the compressor. Setting of the wired controller. See details of the manual concerning setting contents of the controller, including such basic settings as refrigerating and heating mode, manual adjustment and automatic adjustment mode and pump mode. Under normal circumstances, the parameters are set around standard operating conditions for trial run, and extreme working conditions should be prevented as much as possible. Carefully adjust the water switch on the water system or the inlet stop valve of the unit, to make the water of the system accord with the water in specification table. 2. Test run 6..1 Start up the controller and check whether the unit displays a fault code. If a fault occurs, remove the fault first, and start the unit according to the operating method in the unit control instruction, after determining that there is no fault existing in the unit Conduct trial run for 0 min. When the influent and effluent temp. becomes stabilized, adjust the water to nominal value, to ensure normal operation of the unit. 6.. After the unit is shut down, it should be put into operation 10 min later, to avoid frequent start-up of the unit. In the end, check whether the unit meets the requirements in specification table. Notices: The unit can control start-up and shut-down of the unit, so when the water system is flushed, the operation of the pump should not be controlled by the unit. Do not start up the unit before draining the water system completely. The water switch must be installed correctly. The wires of the water switch must be connected according to electric control schematic diagram, or the faults caused by water breaking while the unit is in operation should be the user s responsibility. Do not re-start the unit within 10 min after the unit is shut down during trial run. When the unit is used frequently, do not cut off the power supply after the unit is shut down; otherwise the compressor cannot be heated, thus leading to its damages. If the unit is not in service for a long time, and the power supply needs to be cut off, the unit should be connected to the power supply 12 hours prior to re-starting of the unit, to pre-heat the compressor. Commissioning 9

94 15.Maintenance Maintenance for main components: Close attention should be paid to the discharge and suction pressure during the running process. Find out reasons and eliminate the failure if abnormality is found. Control and protect the equipment. See to it that no random adjustment be made on the set points on site. Regularly check whether the electric connection is loose, and whether there is bad contact at the contact point caused by oxidation and debris etc., and take timely measures if necessary. Frequently check the work voltage, current and phase balance. Check the reliability of the electric elements in time. Ineffective and unreliable elements should be replaced in time. Removing scale After long-time operation, calcium oxide or other minerals will be settled in the heat transfer surface of the water-side heat exchanger. These substances will affect the heat transfer performance when there is too much scale in the heat transfer surface and sequentially cause that electricity consumption increases and the discharge pressure is too high (or suction pressure too low). Organic acids such as formic acid, citric acid and acetic acid may be used to clean the scale. But in no way should cleaning agent containing chlorine acid or fluoride should be used as the water-side heat exchange is made from stainless steel and is easy to be eroded to cause refrigerant leakage. Pay attention to the following aspects during the cleaning and scale-removing process: Water-side heat exchanger should be done be professionals. Clean the pipe and heat exchanger with clean water after cleaning agent is used. Conduct water treatment to prevent water system from being eroded or re-absorption of scale. In case of using cleaning agent, adjust the density of the agent, cleaning time and temp. according to the scale settlement condition. After pickling is completed, neutralization treatment needs to be done on the waste liquid. Contact relevant company for treating the treated waste liquid. Protection equipments (such as goggles, gloves, mask and shoes) must be used during the cleaning process to avoid breathing in or contacting the agent as the cleaning agent and neutralization agent is corrosive to eyes, skins and nasal mucosa. Winter shutdown For shutdown in winter, the surface of the unit outside and inside should be cleaned and dried. Cover the unit to prevent dust. Open discharge water valve to discharge the stored water in the clean water system to prevent freezing accident (it is preferable to inject antifreeze in the pipe). Replacing parts Parts to be replaced should be the ones provided by our company. Never replace any part with different part. First startup after shutdown The following preparations should be made for re-startup of unit after long-time shutdown: 1) Thoroughly check and clean the unit. 2) Clean water pipe system. ) Check pump, control valve and other equipments of water pipe system. 4) Fix connections of all wires. 5) It is a must to electrify the machine before startup. Refrigeration system Determine whether refrigerant is needed by checking the value of suction and discharge pressure and check whether there is a leakage. Air tight test must be made if there is a leakage or parts of refrigerating system is to be replaced. Take different measures in the following two different conditions from refrigerant injection. 1) Total leakage of refrigerant. In case of such situation, leakage detection must be made on the pressurized nitrogen used for the system. If repair welding is needed, welding cannot be made until all the gas in the system is discharged. Before injecting refrigerant, the whole refrigeration system must be completely dry and of vacuum pumping. 94 Maintenance

95 Connect vacuum pumping pipe at the fluoride nozzle at low-pressure side. Remove air from the system pipe with vacuum pump. The vacuum pumping lasts for above hours. Confirm that the indication pressure in dial gauge is within the specified scope. When the degree of vacuum is reached, inject refrigerant into the refrigeration system with refrigerant bottle. Appropriate amount of refrigerant for injection has been indicated on the nameplate and the table of main technical parameters. Refrigerant must be injected from the low pressure side of system. The injection amount of refrigerant will be affected by the ambient temp.. If the required amount has not been reached but no more injection can be done, make the chilled water circulate and start up the unit for injection. Make the low pressure switch temporarily short circuit if necessary. 2) Refrigerant supplement. Connect refrigerant injection bottle on the fluoride nozzle at low-pressure side and connect pressure gauge at low pressure side. Make chilled water circulate and start up unit, and make the low pressure control switch short circuit if necessary. Slowly inject refrigerant into the system and check suction and discharge pressure. Disassembling compressor Follow the following procedures if compressor needs to be disassembled: 1) Cut off the power supply of unit. 2) Remove power source connection wire of compressor. ) Remove suction and discharge pipes of compressor. 4) Remove fastening screw of compressor. 5) Move the compressor. Auxiliary electric heater When the ambient temp. is lower than 2, the heating efficiency decreases with the decline of the outdoor temp.. In order to make the air-cooled heat pump stably run in a relatively cold region and supplement some heat lost due to de-frosting. When the lowest ambient temp. in the user s region in winter is within 0 C~10 C, the user may consider to use auxiliary electric heater. Please refer to relevant professionals for the power of auxiliary electric heater. System antifreezing In case of freezing at the water-side heat exchanger interval channel, severe damage may be caused, i.e. heat exchange may be broken and appears leakage. This damage of frost crack is not within the warranty scope, so attention must be paid to antifreezing. 1) If the unit that is shutdown for standby is placed in an environment where the outdoor temp. is lower than 0 C, the water in the water system should be drained. 2) Water pipe may be frozen when the chilled water water switch and anti-freezing temp. senor become ineffective at running, therefore, the water switch must be connected in accordance with the connection diagram. ) Frost crack may happen to water-side heat exchanger at maintenance when refrigerant is injected to the unit or is discharged for repair. Pipe freezing is likely to happen any time when the pressure of refrigerant is below 0.4Mpa. Therefore, the water in the heat exchanger must be kept ing or be thoroughly discharged. Maintenance 95

96 16.Control System 16.1 PCB Outline and Description /0/5kw module PCB, outlook view /0/5kw module components description No. Detail information 1 Detection of current of the compressor B (protection code P5) Detection of current of the compressor A (protection code P4) 2 Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is detected to exceed protective value set (A for constant speed compressor), it will be shut down and re-started after min. 96 Control System

97 4 5 6 T4: outdoor ambient temp. sensor (fault code E7) TB: pipe temp. sensor of the condenser B (fault code E6 and protection code P7) TA: pipe temp. sensor of the condenser A (fault code E5 and protection code P6) 1) T4: if there is one system that requires starting outdoor fans, the fans are started through electric control of the unit. Start outdoor fan A only, start A and B gears, and control the unit through T4. 2) TB and TA: when the electric control of the modular unit detects the temp. of the outdoor pipe TA or TB of the system exceeds the protective temp. 65 C, the corresponding system will be shut down. And it will be re-started up, after the temp. drops below the recovery temp. 60 C. Another system will be not affected. ) T4, TB and TA: when the temp. sensor is detected to suffer open circuit or short circuit, fault alarm will occur. When the main unit suffer fault of temp. sensor: the main unit and slave units will be shut down. When the slave unit suffer fault of temp. sensor: the unit will be shut down, but other slave units will not be affected. Discharge temp. sensor of the digital compressor of the system A (fault code E8,protection code P8),only the digital unit is valid, and the fixed speed unit is invalid. Unit outlet water temp. sensor (fault code E4) Under cooling mode and heating mode, conduct adjustment according to the double-pipe heat exchanger outlet water temp.. Adjustment range of constant speed capability: ON and OFF. Total outlet water temp. sensor (fault code E) Only the main unit is valid, and the slave units are invalid. Under cooling mode and heating mode, conduct adjustment according to the magnitude of total outlet water temp.. Adjustment range: shut-down, 40%, 60%, 80% and 100%. Spot check. The operating status of outdoor system can be observed through spot check, and specific display contents are as shown in the following figure: Normal display Operating mode Operating capability of the compressor B Number of online units Outdoor ambient temp. Temp. of the condenser A 7 Plate heat exchanger s frost-proof temp Unit outlet water temp Unit inlet-water tempe Temp. of the condenser B EEV opening A EEV opening B Operating current of system A Operating current of system B Display contents of operating mode : 1. cooling; 2. heating; 4. pump; 8. Stand-by Display contents of number of online units : the main unit can display the number of online units, and the subordinate unit displays 0. Selection code of the compressor The diagram denotes selection of digital compressor 8 The diagram denotes selection of constant speed compressor. Control System 97

98 E F D When the address is C 4 0, it serves as the B 5 main unit. A E F When the address is D 1,2, F, it serves C 4 as the subordinate B 5 unit 1,2, 15. A ADDRRSS 10 COM (O) 485 communication port (fault code E2) COM (I) 485 communication port (fault code E2) COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication. 1) If faults occur between the wired controller and the main unit module, all modules will be shut down. 2) If faults occur between the main unit and slave units, the slave unit module suffering communication fault will be shut down. Less units will be detected by the wired controller, which may display EA, and in the meanwhile, the indicator lamp of the wired controller will flash. high-pressure protection of the system A and discharge temp. switch protection (protection code P0); high-pressure protection of the system B and discharge temp. switch protection (protection code P2); low-pressure protection of the system A (protection code P1); low-pressure protection of the system B (protection code P); 1)Constant speed compressor: connection of discharge temp. switch and high-pressure switch of the system in series. 2)Digital compressor: there are discharge temp. switch and discharge temp. sensor for double protection, connection of discharge temp. switch and high-pressure switch of the system in series, there is a special interface for discharge temp. sensor. Discharge temp. sensor of digital compressor: (it is not checked with constant speed compressor )the compressor is protected basing on the value of the comp discharge temp(dlt).if the DLT is normal(there is not malfunction of discharge temp. sensor, otherwise show fault code E8 ),the control rule is conducted with protection of three temp. ranges: safety(green area),warning(yellow area) and danger(red area).if the DLT is less than 125,the compressor has not protection. If the DLT is more than 125 and keep running for 10 minutes, the system enter yellow area to control, the output capacity of the digital compressor will reduce to 40%,then if the DLT drops to 100,the system returns safety area. If the DLT is up to 140,the compressor stops running, and the system will restart after minutes after the malfunction is eliminated. 1 Double-pipe low-temp. ant-freeze sensor T62 (TBH2) (fault code EF) 14 Double-pipe low-temp. ant-freeze sensor T61 (TBH1) (fault code Eb) Water detection (fault code of the main unit E0) is only valid for the main unit but invalid for subordinate units. 1) Main unit: if abnormal water occurs for the first and second time, the main unit board will display fault code E9. If 15 abnormal water occurs the third time, the main unit board will display fault code E0 (off-power recovery is needed), and the wired controller will display fault code E0 (fault is displayed only after detection). 2) Slave unit: (water detection will not be done). 16 Electronic expansion valve of the system B Each modular part of modular unit has the same electric control function, and the main unit and subordinate units can be set through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being the main unit is given to the unit with digital compressor, and other addresses are subordinate units. Only the unit is chosen as the main unit, its electric control can activate such functions as direct communication with the wired controller, refrigerating and heating capability adjustment, pump control, auxiliary electric heater control, total effluent temperature detection and water switch detection. Electronic expansion valve of the system A Electronic expansion valve is used to control refrigerant under different operating modes and different loads. Auxiliary electric heater Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220V control power supply, so special attention should be paid when installing the auxiliary electric heater. 98 Control System

99 Attention! Under heating mode, when the main unit board detects total water outlet temp. to be lower than 45 C, the switch will be closed, and the auxiliary electric heater will begin to work; when the total water outlet temp. is higher than 50 C, the switch will be opened, and the auxiliary electric heater will stop working. PUMP Attention: the control port value of the pump actually detected is ON/OFF but not 220V control power supply, so special attention should be paid when installing the pump. 19 1) After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the process of operation. 2) In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating. ) In case of shutdown under the pump mode, the pump can be directly shut down. Compressor of the system B; Neutral line 20 Four-way valve of the system B; Neutral line LED display 1) In case of stand-by, the address of the module is displayed; 21 2) In case of normal operation, 10. is displayed (10 is followed by dot). ) In case of fault or protection, fault code or protection code is displayed. Compressor of the system A; Neutral line 22 Four-way valve of the system A; Neutral line 2 High fan speed of outdoor fan controlled by T4. 24 Low fan speed of outdoor fan, controlled by T4. 25 PWM,use for adjusting of the digital compressor s capacity 26 Input of transformer, V AC current. Input of three-phase four-wire power supply (fault code E1) Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be 120 o among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will be displayed. 27 When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase dislocation of power supply are detected only in the early period after the power supply is connected, and they are not detected while the unit is in operation. 28 Output of transformer CAUTION 1. Faults When the main unit suffers faults, the main unit stops operating, and all other units also stop running; When the slave unit suffers faults, only the unit stops operating, and other units are not affected. 2. Protection When the main unit is under protection, only the unit stops operating, and other units keep running; When the slave unit is under protection, only the unit stops operating, and other units are not affected. Control System 99

100 /60/65kw module PCB, outlook view /60/65kw module components description No. Detail information 1 Detection of current of the compressor B (protection code P5) Detection of current of the compressor A (protection code P4) 2 Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is detected to exceed protective value set (A for constant speed compressor), it will be shut down and re-started after min. T4: outdoor ambient temp. sensor (fault code E7) TB: pipe temp. sensor of the condenser B (fault code E6 and protection code P7) TA: pipe temp. sensor of the condenser A (fault code E5 and protection code P6) 1) T4: if there is one system that requires starting outdoor fans, the fans are started through electric control of the unit. Start outdoor fan A only, start A and B gears, and control the unit through T4. 2) TB and TA: when the electric control of the modular unit detects the temp. of the outdoor pipe TA or TB of the system exceeds the protective temp. 65 C, the corresponding system will be shut down. And it will be re-started up, after the temp. drops below the recovery temp. 60 C. Another system will be not affected. ) T4, TB and TA: when the temp. sensor is detected to suffer open circuit or short circuit, fault alarm will occur. When the main unit suffer fault of temp. sensor: the main unit and slave units will be shut down. When the slave unit suffer fault of temp. sensor: the unit will be shut down, but other slave units will not be affected. 4 (reserved) Unit outlet water temp. sensor (fault code E4) 5 Under cooling mode and heating mode, conduct adjustment according to the magnitude of unit outlet water temp Control System

101 6 Adjustment range of constant speed capability: ON and OFF. Total outlet water temp. sensor (fault code E) Only the main unit is valid, and the slave units are invalid. Under cooling mode and heating mode, conduct adjustment according to the magnitude of total outlet water temp.. Adjustment range: shut-down, 40%, 60%, 80% and 100%. Spot check. The operating status of outdoor system can be observed through spot check, and specific display contents are as shown in the following figure: Normal display Operating mode Operating capability of the compressor B Number of online units Outdoor ambient temp. Temp. of the condenser A 7 T61 frost-proof temp Unit outlet water temp Unit outlet-water tempe Temp. of the condenser B TXV opening A TXV opening B Operating current of system A Operating current of system B The last failure Display contents of operating mode : 1. cooling; 2. heating; 4. pump; 8. Stand-by Display contents of number of online units : the main unit can display the number of online units, and the slave unit displays 0. Selection code of the compressor Reserved DIP switch state. 8 The diagram denotes selection of constant speed compressor (Defaul setting) E F D When the address is C 4 0, it serves as the B 5 main unit. A E F When the address is D 1,2, F, it serves C 4 as the subordinate B 5 unit 1,2, 15. A ADDRRSS 10 COM (O) 485 communication port (fault code E2) Each modular part of modular unit has the same electric control function, and the main unit and subordinate units can be set through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being the main unit is given to the unit with digital compressor, and other addresses are subordinate units. Only the unit is chosen as the main unit, its electric control can activate such functions as direct communication with the wired controller, refrigerating and heating capability adjustment, pump control, auxiliary electric heater control, total effluent temperature detection and water switch detection. COM (I) 485 communication port (fault code E2) COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication. 1) If faults occur between the wired controller and the main unit module, all modules will be shut down. 2) If faults occur between the main unit and slave units, the slave unit module suffering communication fault will be shut down. Less units will be detected by the wired controller, which may display EA, and in the meanwhile, the indicator lamp of the wired controller will flash. high-pressure protection of the system A and discharge temp. switch protection (protection code P0); high-pressure protection of the system B and discharge temp. switch protection (protection code P2); Control System 101

102 low-pressure protection of the system A (protection code P1); low-pressure protection of the system B (protection code P); Constant speed compressor: connection of discharge temp. switch and high-pressure switch of the system in series. 1 Inlet water temp. sensor T62 (TBH2) (fault code EF) 14 Shell and tube low-temp. ant-freeze sensor T61 (TBH1) (fault code Eb) Water detection (fault code of the main unit E0) is only valid for the main unit but invalid for subordinate units. 1) Main unit: if abnormal water occurs for the first and second time, the main unit board will display fault code E9. If 15 abnormal water occurs the third time, the main unit board will display fault code E0 (off-power recovery is needed), and the wired controller will display fault code E0 (fault is displayed only after detection). 2) Slave unit: (water detection will not be done). 16 Control port (reserved) 17 Electronic expansion valve of the system B Electronic expansion valve of the system A 18 Electronic expansion valve is used to control refrigerant under different operating modes and different loads. Auxiliary electric heater Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220V control power supply, so special attention should be paid when installing the auxiliary electric heater. 19 Attention! Under heating mode, when the main unit board detects total water outlet temp. to be lower than 45 C, the switch will be closed, and the auxiliary electric heater will begin to work; when the total water outlet temp. is higher than 50 C, the switch will be opened, and the auxiliary electric heater will stop working. PUMP Attention: the control port value of the pump actually detected is ON/OFF but not 220V control power supply, so special attention should be paid when installing the pump. 20 1) After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the process of operation. 2) In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating. ) In case of shutdown under the pump mode, the pump can be directly shut down. Compressor of the system B; Neutral line 21 Four-way valve of the system B; Neutral line LED display. 1) In case of stand-by, the address of the module is displayed; 22 2) In case of normal operation, 10. is displayed (10 is followed by dot). ) In case of fault or protection, fault code or protection code is displayed. Compressor of the system A; Neutral line 2 Four-way valve of the system A; Neutral line 24 Outdoor fan A, controlled by T4. 25 Outdoor fan B, controlled by T4. 26 (reserved port) 27 Input of transformer, 220V AC current. (only valid for the main unit) Input of three-phase four-wire power supply (fault code E1) 28 Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be 120 o among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will be displayed. 102 Control System

103 When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase dislocation of power supply are detected only in the early period after the power supply is connected, and they are not detected while the unit is in operation. 29 Output of transformer CAUTION 1. Faults When the main unit suffers faults, the main unit stops operating, and all other units also stop running; When the slave unit suffers faults, only the unit stops operating, and other units are not affected. 2. Protection When the main unit is under protection, only the unit stops operating, and other units keep running; When the slave unit is under protection, only the unit stops operating, and other units are not affected kw module PCB, outlook view kw module components description No. Detail information 1 EEV B of No.1 unit 2 EEV A of No.1 unit High-pressure protection and discharge temp. switch protection of the system A of No.1 unit (protection code P0); High-pressure protection and discharge temp. switch protection of the system B of No.1 unit (protection code P2); Low-pressure protection of the system A of No.1 unit (protection code P1); Control System 10