RC GROUP. MULTIPLO.A.STD/ELN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans R407C. SCROLL compressors kw

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1 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans SCROLL compressors kw RC GROUP TCHNICL DOCUMNTTION MLTSRL_G_GB407_0203

2 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans WORKING LIMITS COOLING MOD vaporator water temperature: +6 C Leaving water minimum temperature. -6 C Leaving water minimum temperature by adding antifreeze. -15 C Leaving water minimum temperature by adding antifreeze and BRIN kit. +20 C Inlet water maximum temperature. Outdoor air temperature: -5 C minimum value. -15 C minimum value with condensing control system. +35 C maximum value for unit in full load conditions. +47 C maximum value for unit in partial load conditions. HT PUMP Outdoor air temperature: -15 C minimum value. +30 C maximum value. OUTLT HOT WTR TMPRTUR RNG: C Outlet water temperature range value. WRNING ll limit and working values showed in the catalogue are referred to nominal conditions with water to the evaporator 12/7 C, hot water 40/45 C and R407C refrigerant charge. For different working conditions and/or other refrigerants, please check the limit operating conditions of the specific model with the electronic selection program RCWORLD. ll the products manufactured by the RC GROUP, in its manufacturing divisions, RC CONDIZION- TORI, MP and SIMIR, are designed and produced with materials and components suitable to be exposed to temperatures of C without any damage to the material structure nor to the components and machines operational characteristics. In case it will be required that the RC GROUP products, for outdoor installations, will grant working continuity with outside temperatures lower than -15 C, a low ambient temperature kit, with features different for each product, is available upon request. RC GROUP S.p.. - MLTSRL_G_GB407_

3 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans The units are in compliance with C 98/37, C 89/336, C 73/23, C 97/23 norms and subsequent modifications. MULTIPLO..STD: Chiller in standard version. COMPONNTS Unit base made of epoxy painted galvanized steel sheet profiles and sandwich panel injected with noise and vibration deading material. Housing made of anodized aluminium profile frame, jointed with reinforced PVC corners and galvanized steel sheet panelling externally coated with PVC film. Technical compartment, fully enclosed and separate from the air flow, housing compressors, control, electric and regulation devices, to assure working continuity during ordinary service and preventive maintenance operations and to reduce the noise emissions. Stainless steel ISI 316 welded plate evaporator, with one gas circuit for each compressor, insulated with closed cells polyurethane. vaporator antifreeze heater. Direct driven axial fans protected by special safety mesh. Gas/air heat exchanger with copper tubes, continuous aluminium finning with aluminium or epoxy painted galvanized steel sheet frame. Gas/air heat exchanger automatic defrosting system managed by MP99 microprocessor system. Welded plate condensers, for hot water production, in stainless steel ISI 316, insulated with closed cell polyurethane. The condensers having the hydraulic circuit in parallel. SCROLL type hermetic compressor with built-in integral electric protection, built-in silencer on gas discharge and crankcase electric heater. Stop valves on compressor suction and discharge. Rubber holders for compressor. Condensing control system: - Working in cooling mode: Condensing control system with air flow variation through special air damper, installed in the fan outlet, and proportional motor directly driven by the proportional signal managed by MP99 microprocessor control, allowing the following operating conditions: Full load with outdoor temperature from -15 to +37/40 C. Partial load (if scheduled) with outdoor temperature up to +48/52 C. Over this limit a safety device stop the unit. - Working in heating mode: During working in heating mode the outdoor air temperature working range is included between -15 C and +30 C with leaving hot water temperature included between +30 C and +50 C. Components for each refrigerant circuit: - Valves for cycle working selection. - Suction line liquid separator. - Thermostatic expansion valve. - Liquid and moisture indicator. - lectromagnetic valve on the liquid line. - Dryer and anti-acid gas filter. - Liquid receivers. - Stop valves on the liquid line and on the evaporator. - Copper connecting pipings for liquid circuit line. - Copper suction line. - Copper discharge line. - Flexible pipings for pressure switches connection. - High pressure safety switches. - Pressure transducers, for monitoring, control and limit functions for high and low pressure. - Pump-down stop system. - Non return valve on compressor discharge. - Predisposition for by-pass 2 way motorized valve, on hot water circuit, for unit starting with low water temperature. RC GROUP S.p.. - MLTSRL_G_GB407_

4 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans - Refrigerant charge and non-freezing oil charge. MP99 microprocessor control system. Outdoor air temperature sensor. Temperature sensors on evaporator water inlet and outlet. Temperature sensors on water condenser water inlet and outlet. Differential pressure switch on evaporator water side with protective function. Phases monitoring relay. IP 54 electric board equipped with: - Quick opening external panel with protective function. Safety internal panel equipped with door lock main switch, microprocessor display and auxiliary controls. - Contactors on each single load. - Magnetothermic switches on each single load (for load with nominal absorption higher than 44, fuses are installed). - uxiliary circuit and microprocessor feeding by transformer. RC GROUP S.p.. - MLTSRL_G_GB407_

5 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans MULTIPLO..STD: Chiller in standard version. OPTIONL Noise absorption plenum on fans air discharge, height 750mm. Spring antivibration holders (not installed). Modular metallic nets for gas/air heat exchanger protection. Gas/air heat exchanger with marine alloy fins. Gas/air heat exchanger with epoxy coated fins. Gas/air heat exchanger with copper fins. Gas/air heat exchanger with tin coated copper fins. UDT, SQL o SM VIII Div. 1 approved pressure vessels. Compressor capacitor for power factor cosϕ 0,9. Safety flow switch on the water circuit. Pumping groups for chilled water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Pumping groups for hot water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Chilled water tank with antifreeze electric heater. Hot water tank with antifreeze electric heater. MP99 microprocessor accessories: - TV system - Phase-lack control and line voltage displaying. - T system - Total electric absorption indication. - RC3500 card - RS232C-RS422-RS485 serial line outlet. - RCBUS card - Serial line interface for MODBUS and JBUS communication protocols. - RC3100 "N" cards - larms remotization. WRNING RC GROUP reserves the right to accept the matching of the optional installed on the unit. RC GROUP S.p.. - MLTSRL_G_GB407_

6 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans TCHNICL DT MULTIPLO..STD: Chiller in standard version. MODL SIZ ONLY COOLING (1) COOLING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa ONLY HTING (2) HTING CPCITY kw COMPRSSORS Power input kw bsorbed current WTR CONDNSR Water flow m 3 /h Pressure drops kpa COOLING ND HRTING (3) COOLING CPCITY kw HTING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa WTR CONDNSR Water flow m 3 /h Pressure drops kpa COMMON CHRCTRISTICS COMPRSSORS n. Max absorbed current Starting current VPORTOR n. Max water flow m 3 /h Water content l WTR CONDNSR n. Max water flow m 3 /h Water content l FNS n. ir flow m 3 /h Nominal mechanical power kw Max absorbed current GS CIRCUIT n. CPCITY STPS n. DIMNSIONS Lenght mm Width mm Height mm NT WIGHT kg NRGY FFICINCY INDX (4) Cooling nominal efficiency R Heating nominal efficiency COP Heat+cool nominal efficiency COP Standard capacity steps IPLV Standard capacity steps MP 64.Z.2 74.Z Z Z.2 G6 G6 G8B G8B 62,1 69,6 93,7 109,1 20,2 24,7 34,6 45,8 35,8 44,8 59,1 76,2 10,6 11,9 16,1 18,7 54,3 48,4 26,1 29,3 74,3 84,1 112,1 132, ,1 35,1 43,9 38,2 45,4 59,8 73,5 12,9 14,7 19,5 23,1 43,4 11,3 13,7 13,9 59,5 69,4 94,6 114,9 81,5 94,5 129,7 158,9 21,4 24,5 33,4 40,6 37,5 44,6 57,5 69,7 10,2 11,9 16,2 19,7 49,9 48,2 26,6 32,5 14,2 16,5 22,6 27,7 52,1 14,3 18, ,8 2,8 2,8 2,8 6,8 6,8 6,8 6, ,07 2,82 2,71 2,38 3,38 3,35 3,19 3,02 2,78 2,83 2,83 2,83 4,52 4,14 3,98 3,50 3,47 3,18 3,06 2,69 1 Outdoor temperature: 35 C; Chilled water temperature outlet 7 C 2 Outdoor temperature: 7 C with 90%RH; Hot water temperature 40/45 C 3 Chilled water temperature outlet 7 C; Hot water temperature 40/45 C 4 IPLV: nergy efficiency index according to RI STNDRD MP: nergy efficiency index according to ICRR For more informations about nergy fficiency Indexes. please refer to nergy fficiency Indexes bulletin of RC GROUP Technical Literature. SUPPLY VOLTG 400/3/50 + Mp On request 230/3/50-415/3/50. RC GROUP S.p.. - MLTSRL_G_GB407_

7 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans COUSTIC DT MULTIPLO..STD: Chiller in standard version. SOUND PRSSUR LVL (L P ) Sound pressure level in free field conditions on condenser coil side. MODL Sound pressure level 1m far 5m far 10m far db() db() db() 64.Z.2 74.Z Z Z ,5 59,5 59,5 59,5 53,6 53,6 53,6 53,6 MODL Mean sound pressure level 1m far db() MN SOUND PRSSUR LVL (L Pm ) Mean sound pressure level in free field conditions, according to ISO 3744 norm. 64.Z.2 74.Z Z Z IMPORTNT For further information about units acoustic data, please refer to The Noise bulletin of RC GROUP Technical Literature. RC GROUP S.p.. - MLTSRL_G_GB407_

8 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans The units are in compliance with C 98/37, C 89/336, C 73/23, C 97/23 norms and subsequent modifications. MULTIPLO..LN: Chiller in extremely low noise version. COMPONNTS Unit base made of epoxy painted galvanized steel sheet profiles and sandwich panel injected with noise and vibration deading material. Housing made of anodized aluminium profile frame, jointed with reinforced PVC corners and galvanized steel sheet panelling externally coated with PVC film. Technical compartment, fully enclosed and separate from the air flow, housing compressors, control, electric and regulation devices, to assure working continuity during ordinary service and preventive maintenance operations and to reduce the noise emissions. Panels and technical compartment insulated by means of special sound deadening materials. Stainless steel ISI 316 welded plate evaporator, with one gas circuit for each compressor, insulated with closed cells polyurethane. vaporator antifreeze heater. Direct driven low speed axial fans protected by safety mesh. Gas/air heat exchanger with wide exchange surface, with copper tubes, continuous aluminium finning with aluminium or epoxy painted galvanized steel sheet frame. Gas/air heat exchanger automatic defrosting system managed by MP99 microprocessor system. Welded plate condensers, for hot water production, in stainless steel ISI 316, insulated with closed cell polyurethane. The condensers having the hydraulic circuit in parallel. SCROLL type hermetic compressor with built-in integral electric protection, built-in silencer on gas discharge and crankcase electric heater. Stop valves on compressor suction and discharge. Rubber holders for compressor. Condensing control system: - Working in cooling mode: Condensing control system with air flow variation through special air damper, installed in the fan outlet, and proportional motor directly driven by the proportional signal managed by MP99 microprocessor control, allowing the following operating conditions: - Full load with outdoor temperature from -15 to +37/40 C. - Full load with fans at max speed and noise pressure increased of about 5 6 db() with outdoor temperature up to +43/46 C. - Partial load (if scheduled) with outdoor temperature up to +48/52 C. Over this limit a safety device stop the unit. - Working in heating mode: During working in heating mode the outdoor air temperature working range is included between -15 C and +30 C with leaving hot water temperature included between +30 C and +50 C. Components for each refrigerant circuit: - Valves for cycle working selection. - Suction line liquid separator. - Thermostatic expansion valve. - Liquid and moisture indicator. - lectromagnetic valve on the liquid line. - Dryer and anti-acid gas filter. - Liquid receivers. - Stop valves on the liquid line and on the evaporator. - Copper connecting pipings for liquid circuit line. - Copper suction line. - Copper discharge line. - Flexible pipings for pressure switches connection. - High pressure safety switches. - Pressure transducers, for monitoring, control and limit functions for high and low pressure. - Pump-down stop system. RC GROUP S.p.. - MLTSRL_G_GB407_

9 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans - Non return valve on compressor discharge. - By-pass 2 way motorized valve, on hot water circuit, for unit starting with low water temperature. - Refrigerant charge and non-freezing oil charge. MP99 microprocessor control system. Outdoor air temperature sensor. Temperature sensors on evaporator water inlet and outlet. Temperature sensors on water condenser water inlet and outlet. Differential pressure switch on evaporator water side with protective function. Phases monitoring relay. IP 54 electric board equipped with: - Quick opening external panel with protective function. Safety internal panel equipped with door lock main switch, microprocessor display and auxiliary controls. - Contactors on each single load. - Magnetothermic switches on each single load (for load with nominal absorption higher than 44, fuses are installed). - uxiliary circuit and microprocessor feeding by transformer. RC GROUP S.p.. - MLTSRL_G_GB407_

10 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans MULTIPLO..LN: Chiller in extremely low noise version. OPTIONL Noise absorption plenum on fans air discharge, height 750mm. Spring antivibration holders (not installed). Modular metallic nets for gas/air heat exchanger protection. Gas/air heat exchanger with marine alloy fins. Gas/air heat exchanger with epoxy coated fins. Gas/air heat exchanger with copper fins. Gas/air heat exchanger with tin coated copper fins. UDT, SQL o SM VIII Div. 1 approved pressure vessels. Compressor capacitor for power factor cosϕ 0,9. Safety flow switch on the water circuit. Pumping groups for chilled water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Pumping groups for hot water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Chilled water tank with antifreeze electric heater. Hot water tank with antifreeze electric heater. MP99 microprocessor accessories: - TV system - Phase-lack control and line voltage displaying. - T system - Total electric absorption indication. - RC3500 card - RS232C-RS422-RS485 serial line outlet. - RCBUS card - Serial line interface for MODBUS and JBUS communication protocols. - RC3100 "N" cards - larms remotization. WRNING RC GROUP reserves the right to accept the matching of the optional installed on the unit. RC GROUP S.p.. - MLTSRL_G_GB407_

11 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans TCHNICL DT MULTIPLO..LN: Chiller in extremely low noise version. MODL SIZ ONLY COOLING (1) COOLING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa ONLY HTING (2) HTING CPCITY kw COMPRSSORS Power input kw bsorbed current WTR CONDNSR Water flow m 3 /h Pressure drops kpa COOLING ND HRTING (3) COOLING CPCITY kw HTING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa WTR CONDNSR Water flow m 3 /h Pressure drops kpa COMMON CHRCTRISTICS COMPRSSORS n. Max absorbed current Starting current VPORTOR n. Max water flow m 3 /h Water content l WTR CONDNSR n. Max water flow m 3 /h Water content l FNS n. ir flow m 3 /h Nominal mechanical power kw Max absorbed current GS CIRCUIT n. CPCITY STPS n. DIMNSIONS Lenght mm Width mm Height mm NT WIGHT kg NRGY FFICINCY INDX (4) Cooling nominal efficiency R Heating nominal efficiency COP Heat+cool nominal efficiency COP Standard capacity steps IPLV Standard capacity steps MP 64.Z.2 74.Z Z Z.2 G6 G6 G8B G8B 56,8 63,6 87,6 107,1 23,4 28,1 38,3 46,8 40,2 49, ,7 10, ,4 45,5 40,5 22,8 28,3 70,3 80, ,1 35,1 43,9 38,2 45,4 59,8 73,5 12, ,8 23,3 38,8 10,3 12,7 14,2 59,5 69,4 94,6 114,9 81,5 94,5 129,7 158,9 21,2 24,3 33,1 40,7 37,2 44,3 57,2 69,8 10,2 11,9 16,2 19,7 49,9 48,2 26,6 32,5 14,2 16,5 22,6 27,7 52,1 14,3 18, ,8 2,8 2,8 4,2 6,8 6,8 6,8 6, ,43 2,26 2,29 2,29 3,20 3,19 3,08 3,05 2,81 2,86 2,86 2,82 3,57 3,33 3,36 3,36 2,74 2,56 2,58 2,59 1 Outdoor temperature: 35 C; Chilled water temperature outlet 7 C 2 Outdoor temperature: 7 C with 90%RH; Hot water temperature 40/45 C 3 Chilled water temperature outlet 7 C; Hot water temperature 40/45 C 4 IPLV: nergy efficiency index according to RI STNDRD MP: nergy efficiency index according to ICRR For more informations about nergy fficiency Indexes. please refer to nergy fficiency Indexes bulletin of RC GROUP Technical Literature. SUPPLY VOLTG 400/3/50 + Mp On request 230/3/50-415/3/50. RC GROUP S.p.. - MLTSRL_G_GB407_

12 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans COUSTIC DT MULTIPLO..LN: Chiller in extremely low noise version. SOUND PRSSUR LVL (L P ) Sound pressure level in free field conditions on condenser coil side. MODL Sound pressure level 1m far 5m far 10m far db() db() db() 64.Z.2 74.Z Z Z ,5 49,5 49,5 53,2 43,6 43,6 43,6 47,5 MN SOUND PRSSUR LVL (L Pm ) Mean sound pressure level in free field conditions, according to ISO 3744 norm. MODL Mean sound pressure level 1m far db() 64.Z.2 74.Z Z Z IMPORTNT For further information about units acoustic data, please refer to The Noise bulletin of RC GROUP Technical Literature. RC GROUP S.p.. - MLTSRL_G_GB407_

13 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans LCTRICL DT MXIMUN LCTRIC BSORPTION CLCULTION Through this chapter it is possible to calculate the unit maximum electric absorption (), according to extreme working conditions. The involved components are the following: - Cooling compressors electric motor - Condenser fans electric motor - Water pump electric motor (if present) The electric data of the components are indicated on relative technical data tables. XMPL: Calculation for MULTIPLO..STD. 64.Z.2: MXIMUM LCTRIC BSORPTION - Compressors 49,0 + - Condenser fans (*) 6,8 = Maximum electric absorption 55,8 To obtain the unit electric absorption values with different feeding voltage, please refer to the following coefficients: Feeding voltage Coefficient , ,97 IMPORTNT For water pumps and condenser fans, the values of the nominal electric absorption have been assumed to be same as plate current ones. In the normal operation the electric absorption is lower than the plate current. These values depend on the operating conditions of the unit and control of the system. RC GROUP S.p.. - MLTSRL_G_GB407_

14 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans WORKING LOGIC The MULTIPLO working logic privilege the maximum energy saving, by producing as much simultaneously as possible chilled and hot water. It is very important to underline that the two fluids productions is absolutely independent from the external temperature conditions. It is possible to have three operation modes: COOLING The unit works as an air cooled liquid chiller. Gas/air heat exchanger "D", for total condensation heat rejection and evaporator for chilled water production "C, are simultaneously in operation. The capacity steps control is based on the cooling request. HTING The unit works as a reverse cycle heat pump liquid chiller with air evaporator. Condenser "B" for total condensation heat rejection and relevant hot water production and gas/ air heat exchanger "D", for total gas evaporation, are simultaneously in operation. t the same time, the automatic defrosting control for gas/air heat exchanger "D" is activated in order to avoid ice formation. The capacity steps control is based on the heating request. COOLING + HTING The unit simultaneously produced hot water and chilled water. The condenser "B", for total condensation heat rejection and relevant hot water production and the evaporator "C", for chilled water production, are simultaneously in operation. The capacity steps control is based on the highest request between heating and cooling ones. WORKING LOGIC COOLING HTING COOLING HTING HOT WTR HOT WTR HOT WTR P P P H B H B H B D D D G L G L G L H G O N F H G O N F H G O N F M C M C M C CHILLD WTR CHILLD WTR CHILLD WTR Compressor B Condenser for hot water production C vaporator for chilled water production D Gas/air heat exchanger No return valves F Service tap G Solenoid valves H Working cycle selection valves L Liquid receiver with safety valve M Liquid separator N Mechanical gas filter O Thermostatic valve P Motorized by-pass valve RC GROUP S.p.. - MLTSRL_G_GB407_

15 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans OPTIONL CHILLD WTR ND HOT WTR TNKS ach tank is formed by two insulated water tanks, enclosed in a painted galvanized steel sheet box and built-in antifreeze electric heater. For transportation needs the first tank is supplied assembled under the unit, ready to work, while the second one will have to be fitted on site. CHILLR SIZ G6 G8B - G8 Capacity l Water inlet Ø 3" MPT DN 100 Water drain Ø MPT 1/2" 1/2" ir discharge Ø MPT 1/2" 1/2" mpty weight kg Dimensions mm B mm C mm D mm mm F mm G mm Fixing holes 7 n. x Ø mm 6x20 6x20 CHILLD ND HOT WTR TNKS B C F D G G D 1 Chilled water inlet. 2 Chilled water outlet. 3 Hot water outlet. 4 Hot water inlet. 5 Tank air discharge pipe. 6 Tank water drain pipe. 7 Fixing holes. RC GROUP S.p.. - MLTSRL_G_GB407_

16 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans OPTIONL PUMPING GROUPS FOR CHILLD ND HOT WTR The water pumps are factory assembled inside the unit and they don't modify the unit dimensions. The water pumps are in line mouths type, in single or twin versions with two poles electric motors. The water pumps are standard fitted with counterflanges, with control and working electric equipment, built-in the water chiller electric board and are directly managed by the MP99 microprocessor control. With the "a" "b" "c" versions it is possible, with the same water flow, to obtain different pressure in order to adequate the pump performance to the real needs of the plant. very pumping group is fitted with expansion tank, water flow switch and safety valve. SINGL WTR PUMPS PRFORMNCS MODL P0a P0b P1a P1b P1c Installed power kw 0,95 1,1 1,5 2,2 3 Plate current 1,76 2,3 3,9 5,1 6,6 Net weight kg Power supply: 400/3/50 + Mp (kpa) 180 Mod. 64.Z.2 (kpa) 230 Mod Z.2 Total pressure P0b P0a Total pressure P1c P1b P1a Water flow (m3/h) Water flow (m3/h) RC GROUP S.p.. - MLTSRL_G_GB407_

17 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans TWIN WTR PUMPS PRFORMNCS MODL PD0a PD0b PD1a PD1b PD2a PD2b PD3a PD3b PD3c Installed power kw 0,95 1,1 1,1 1,5 2,2 3 1,5 2,2 3 Plate current 1,76 2,3 2,6 3,9 5,1 6,6 3,9 5,1 6,6 Net weight kg Power supply: 400/3/50 + Mp Total pressure (kpa) PD0b PD0a Mod. 64.Z.2 Total pressure (kpa) PD1b PD1a Mod. 74.Z Water flow (m3/h) Water flow (m3/h) Total pressure (kpa) PD2b PD2a Mod. 100.Z Water flow (m3/h) Total pressure (kpa) PD3c PD3b PD3a Mod. 124.Z Water flow (m3/h) RC GROUP S.p.. - MLTSRL_G_GB407_

18 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans OPTIONL SILNCING PLNUM ON CONDNSR IR DISCHRG Supplied as separate accessory for installation at site. Same characteristics as the cabinet of the chiller, the plenum is supplied with built-in weatherproof noise absorption partitions. Thanks to the particular disposition of the noise absorption partitions, the air pressure drop across the plenum is zero. NOIS LVL RDUCTION The RC GROUP catalogues show the chillers noise pressure level on gas/air heat exchanger side. The noise pressure level on fans air discharge is always higher. With the plenum it is possible to reach, on fans air discharge side, a noise pressure level value of -3dB() lower than the nominal one (on gas/air heat exchanger side), for all the chillers. The plenum reduces only the noise level on fan air discharge side. No noise level reduction on the other unit sides. xample: Noise level 1m far on gas/air heat exchanger side in free field conditions for chiller MULTIPLO..STD.64.Z.2 = 70 db(). Unit noise level 1m far on fans air discharge side in free field conditions: 70-3 = 67 db(). SILNCING PLNUM ON IR DISCHRG 750 Chiller size G6 G8B G8 Weight kg RC GROUP S.p.. - MLTSRL_G_GB407_

19 MULTIPLO..STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and axial fans OPTIONL SPRING NTIVIBRTION HOLDRS vailable on request for all liquid chillers. They are not installed on the chiller but supplied separately. The antivibration holders type and the positioning layout are showed in a specific drawing supplied with the chiller. The holders must be utilized only to eliminate the vibrations produced by the chiller. SPRING NTIVIBRTION HOLDRS Type C... R... G... Light Medium Heavy xb mm Ø x x208 C mm C x B 1. Chiller frame. 2. Hole for wrench. 3. Screw-jack for unit levelling. 4. Height setting nuts. 5. Washers. 6. ntivibration holder. 7. Base. RC GROUP S.p.. - MLTSRL_G_GB407_

20 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans SCROLL compressors kw RC GROUP TCHNICL DOCUMNTTION MLTSRL_CG_GB407_0203

21 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans WORKING LIMITS COOLING MOD vaporator water temperature: +6 C Leaving water minimum temperature. -6 C Leaving water minimum temperature by adding antifreeze. -15 C Leaving water minimum temperature by adding antifreeze and BRIN kit. +20 C Inlet water maximum temperature. Outdoor air temperature: -5 C minimum value. -30 C minimum value with condensing control system. +35 C maximum value for unit in full load conditions. +47 C maximum value for unit in partial load conditions. HT PUMP Outdoor air temperature: -15 C minimum value. +30 C maximum value. OUTLT HOT WTR TMPRTUR RNG: C Outlet water temperature range value. WRNING ll limit and working values showed in the catalogue are referred to nominal conditions with water to the evaporator 12/7 C, hot water 40/45 C and R407C refrigerant charge. For different working conditions and/or other refrigerants, please check the limit operating conditions of the specific model with the electronic selection program RCWORLD. ll the products manufactured by the RC GROUP, in its manufacturing divisions, RC CONDIZION- TORI, MP and SIMIR, are designed and produced with materials and components suitable to be exposed to temperatures of C without any damage to the material structure nor to the components and machines operational characteristics. In case it will be required that the RC GROUP products, for outdoor installations, will grant working continuity with outside temperatures lower than -15 C, a low ambient temperature kit, with features different for each product, is available upon request. RC GROUP S.p.. - MLTSRL_CG_GB407_

22 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans The units are in compliance with C 98/37, C 89/336, C 73/23, C 97/23 norms and subsequent modifications. MULTIPLO.C.STD: Chiller in standard version. COMPONNTS Unit base made of epoxy painted galvanized steel sheet profiles and sandwich panel injected with noise and vibration deading material. Housing made of anodized aluminium profile frame, jointed with reinforced PVC corners and galvanized steel sheet panelling externally coated with PVC film. Technical compartment, fully enclosed and separate from the air flow, housing compressors, control, electric and regulation devices, to assure working continuity during ordinary service and preventive maintenance operations and to reduce the noise emissions. Stainless steel ISI 316 welded plate evaporator, with one gas circuit for each compressor, insulated with closed cells polyurethane. Double suction centrifugal fans with forward-curved blades, fitted with rubber gasket for fan outlet sealing to the unit structure and equipped with rubber antivibration holders. ach fan is equipped with its own belt driven system with 3 phase 4 poles electric motor, adjustable drive pulley and adjustable fan motor base for belt tightening. ir exhaustion on gas/air heat exchanger side. Gas/air heat exchanger with copper tubes, continuous aluminium finning with aluminium or epoxy painted galvanized steel sheet frame. Gas/air heat exchanger automatic defrosting system managed by MP99 microprocessor system. Welded plate condensers, for hot water production, in stainless steel ISI 316, insulated with closed cell polyurethane. The condensers having the hydraulic circuit in parallel. SCROLL type hermetic compressor with built-in integral electric protection, built-in silencer on gas discharge and crankcase electric heater. Stop valves on compressor suction and discharge. Rubber holders for compressor. Condensing control system: - Working in cooling mode: Condensing control system with air flow variation through special air damper, installed on the fan outlet, and proportional motor directly driven by the proportional signal managed by MP99 microprocessor control, allowing the following operating conditions: Full load with outdoor temperature from -30 C to +42/44 C. Partial load (if scheduled) with outdoor temperature up to +46/50 C. Over this limit a safety device stop the unit. - Working in heating mode: During heat working in heating mode the outdoor air temperature working range is included between -15 C and +35 C with leaving hot water temperature included between +30 C and +50 C. Components for each refrigerant circuit: - Valves for cycle working selection. - Suction line liquid separator. - Thermostatic expansion valve. - Liquid and moisture indicator. - lectromagnetic valve on the liquid line. - Dryer and anti-acid gas filter. - Liquid receivers. - Stop valves on the liquid line and on the evaporator. - Copper connecting pipings for liquid circuit line. - Copper suction line. - Copper discharge line. - Flexible pipings for pressure switches connection. - High pressure safety switches. - Pressure transducers, for monitoring, control and limit functions for high and low pressure. RC GROUP S.p.. - MLTSRL_CG_GB407_

23 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans - Pump-down stop system. - Non return valve on compressor discharge. - Predisposition for by-pass 2 way motorized valve, on hot water circuit, for unit starting with low water temperature. - Refrigerant charge and non-freezing oil charge. MP99 microprocessor control system. Outdoor air temperature sensor. Temperature sensors on evaporator water inlet and outlet. Temperature sensors on water condenser water inlet and outlet. Differential pressure switch on evaporator water side with protective function. Phases monitoring relay. IP 54 electric board equipped with: - Quick opening external panel with protective function. Safety internal panel equipped with door lock main switch, microprocessor display and auxiliary controls. - Contactors on each single load. - Magnetothermic switches on each single load (for load with nominal absorption higher than 44, fuses are installed). - uxiliary circuit and microprocessor feeding by transformer. WRNING The units are fitted with double air circuit from size G7 included. The condenser air discharge ducting must have a partition. RC GROUP S.p.. - MLTSRL_CG_GB407_

24 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans MULTIPLO.C.STD: Chiller in standard version. OPTIONL Noise absorption plenum on fans air discharge, height 750mm for version with air discharge from the top. Spring antivibration holders (not installed). Modular metallic nets for gas/air heat exchanger protection. Gas/air heat exchanger with marine alloy fins. Gas/air heat exchanger with epoxy coated fins. Gas/air heat exchanger with copper fins. Gas/air heat exchanger with tin coated copper fins. Kit for outdoor installation with evaporator antifreeze electric heater. ir exhaustion from the top (vertical air flow). UDT, SQL o SM VIII Div. 1 approved pressure vessels. Compressor capacitor for power factor cosϕ 0,9. Safety flow switch on the water circuit. Pumping groups for chilled water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Pumping groups for hot water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Chilled water tank with antifreeze electric heater. Hot water tank with antifreeze electric heater. MP99 microprocessor accessories: - TV system - Phase-lack control and line voltage displaying. - T system - Total electric absorption indication. - RC3500 card - RS232C-RS422-RS485 serial line outlet. - RCBUS card - Serial line interface for MODBUS and JBUS communication protocols. - RC3100 "N" cards - larms remotization. WRNING The units are fitted with double air circuit from size G7 included. The condenser air discharge ducting must have a partition. RC GROUP reserves the right to accept the matching of the optional installed on the unit. RC GROUP S.p.. - MLTSRL_CG_GB407_

25 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans TCHNICL DT MULTIPLO.C.STD: Chiller in standard version. MODL SIZ ONLY COOLING (1) COOLING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa ONLY HTING (2) HTING CPCITY kw COMPRSSORS Power input kw bsorbed current WTR CONDNSR Water flow m 3 /h Pressure drops kpa COOLING ND HRTING (3) COOLING CPCITY kw HTING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa WTR CONDNSR Water flow m 3 /h Pressure drops kpa COMMON CHRCTRISTICS COMPRSSORS n. Max absorbed current Starting current VPORTOR n. Max water flow m 3 /h Water content l WTR CONDNSR n. Max water flow m 3 /h Water content l FNS n. ir flow m 3 /h vailable static pressure Pa Nominal mechanical power kw Max absorbed current GS CIRCUIT n. CPCITY STPS n. DIMNSIONS Lenght mm Width mm Height mm NT WIGHT kg NRGY FFICINCY INDX (4) Cooling nominal efficiency R Heating nominal efficiency COP Heat+cool nominal efficiency COP Standard capacity steps IPLV Standard capacity steps MP 64.Z.2 74.Z Z Z.2 G7 G7 G8 G8 56,8 65,2 93,7 111,3 23,4 27,2 34,6 44,5 40,2 48,2 59,1 74,5 9,7 11,2 16,1 19,1 45,5 42,5 26,1 30,5 70,3 82,8 112, ,1 35,1 43,9 38,2 45,4 59,8 73,5 12,2 14,4 19,5 23,3 38, ,7 14,2 59,5 69,4 94,6 114,9 81,5 94,5 129,7 158,9 21,2 24,5 33,4 40,7 37,2 44,5 57,5 69,8 10,2 11,9 16,2 19,7 49,9 48,2 26,6 32,5 14,2 16,5 22,6 27,7 52,1 14,3 18, ,4 4,4 6 7, ,4 14, ,43 2,40 2,71 2,50 3,20 3,30 3,19 3,05 2,81 2,83 2,83 2,82 3,57 3,52 3,98 3,68 2,74 2,71 3,06 2,83 1 Outdoor temperature: 35 C; Chilled water temperature outlet 7 C 2 Outdoor temperature: 7 C with 90%RH; Hot water temperature 40/45 C 3 Chilled water temperature outlet 7 C; Hot water temperature 40/45 C 4 IPLV: nergy efficiency index according to RI STNDRD MP: nergy efficiency index according to ICRR For more informations about nergy fficiency Indexes. please refer to nergy fficiency Indexes bulletin of RC GROUP Technical Literature. SUPPLY VOLTG 400/3/50 + Mp On request 230/3/50-415/3/50. RC GROUP S.p.. - MLTSRL_CG_GB407_

26 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans COUSTIC DT MULTIPLO.C.STD: Chiller in standard version. SOUND PRSSUR LVL (L P ) Sound pressure level in free field conditions on condenser coil side with ducted air discharge. MODL Sound pressure level 1m far 5m far 10m far db() db() db() 64.Z.2 74.Z Z Z ,8 60,8 60,5 62,5 52,8 54,8 54,6 56,6 MODL Mean sound pressure level 1m far db() MN SOUND PRSSUR LVL (L Pm ) Mean sound pressure level in free field conditions, with ducted air discharge, according to ISO 3744 norm. 64.Z.2 74.Z Z Z IMPORTNT For further information about units acoustic data, please refer to The Noise bulletin of RC GROUP Technical Literature. RC GROUP S.p.. - MLTSRL_CG_GB407_

27 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans The units are in compliance with C 98/37, C 89/336, C 73/23, C 97/23 norms and subsequent modifications. MULTIPLO.C.LN: Chiller in extremely low noise version. COMPONNTS Unit base made of epoxy painted galvanized steel sheet profiles and sandwich panel injected with noise and vibration deading material. Housing made of anodized aluminium profile frame, jointed with reinforced PVC corners and galvanized steel sheet panelling externally coated with PVC film. Technical compartment, fully enclosed and separate from the air flow, housing compressors, control, electric and regulation devices, to assure working continuity during ordinary service and preventive maintenance operations and to reduce the noise emissions. Panels and technical compartment insulated by means of special sound deadening materials. Stainless steel ISI 316 welded plate evaporator, with one gas circuit for each compressor, insulated with closed cells polyurethane. Double suction centrifugal fans with forward-curved blades, fitted with rubber gasket for fan outlet sealing to the unit structure and equipped with rubber antivibration holders. ach fan is equipped with its own belt driven system with 3 phase 4 poles electric motor, adjustable drive pulley and adjustable fan motor base for belt tightening. ir exhaustion on gas/air heat exchanger side. Gas/air heat exchanger with wide exchange surface, with copper tubes, continuous aluminium finning with aluminium or epoxy painted galvanized steel sheet frame. Gas/air heat exchanger automatic defrosting system managed by MP99 microprocessor system. Welded plate condensers, for hot water production, in stainless steel ISI 316, insulated with closed cell polyurethane. The condensers having the hydraulic circuit in parallel. SCROLL type hermetic compressor with built-in integral electric protection, built-in silencer on gas discharge and crankcase electric heater. Stop valves on compressor suction and discharge. Rubber holders for compressor. Condensing control system: - Working in cooling mode: Condensing control system with air flow variation through special air damper, installed on the fan outlet, and proportional motor directly driven by the proportional signal managed by MP99 microprocessor control, allowing the following operating conditions: Full load with outdoor temperature from -30 C to +42/44 C. Partial load (if capacity control is installed) with outdoor temperature up to +46/50 C. Over this limit a safety device stop the unit. - Working in heating mode: During heat working in heating mode the outdoor air temperature working range is included between -15 C and +35 C with leaving hot water temperature included between +30 C and +50 C. Components for each refrigerant circuit: - Valves for cycle working selection. - Suction line liquid separator. - Thermostatic expansion valve. - Liquid and moisture indicator. - lectromagnetic valve on the liquid line. - Dryer and anti-acid gas filter. - Liquid receivers. - Stop valves on the liquid line and on the evaporator. - Copper connecting pipings for liquid circuit line. - Copper suction line. - Copper discharge line. - Flexible pipings for pressure switches connection. - High pressure safety switches. - Pressure transducers, for monitoring, control and limit functions for high and low pressure. RC GROUP S.p.. - MLTSRL_CG_GB407_

28 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans - Pump-down stop system. - Non return valve on compressor discharge. - By-pass 2 way motorized valve, on hot water circuit, for unit starting with low water temperature. - Refrigerant charge and non-freezing oil charge. MP99 microprocessor control system. Outdoor air temperature sensor. Temperature sensors on evaporator water inlet and outlet. Temperature sensors on water condenser water inlet and outlet. Differential pressure switch on evaporator water side with protective function. Phases monitoring relay. IP 54 electric board equipped with: - Quick opening external panel with protective function. Safety internal panel equipped with door lock main switch, microprocessor display and auxiliary controls. - Contactors on each single load. - Magnetothermic switches on each single load (for load with nominal absorption higher than 44, fuses are installed). - uxiliary circuit and microprocessor feeding by transformer. WRNING The units are fitted with double air circuit from size G7 included. The condenser air discharge ducting must have a partition. RC GROUP S.p.. - MLTSRL_CG_GB407_

29 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans MULTIPLO.C.LN: Chiller in extremely low noise version. OPTIONL Noise absorption plenum on fans air discharge, height 750mm for version with air discharge from the top. Spring antivibration holders (not installed). Modular metallic nets for gas/air heat exchanger protection. Gas/air heat exchanger with marine alloy fins. Gas/air heat exchanger with epoxy coated fins. Gas/air heat exchanger with copper fins. Gas/air heat exchanger with tin coated copper fins. Kit for outdoor installation with evaporator antifreeze electric heater. ir exhaustion from the top (vertical air flow). UDT, SQL o SM VIII Div. 1 approved pressure vessels. Compressor capacitor for power factor cosϕ 0,9. Safety flow switch on the water circuit. Pumping groups for chilled water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Pumping groups for hot water equipped with 1 or 2 (working+stand-by) water pumps: - P... pumping group with 2 poles water pumps. Chilled water tank with antifreeze electric heater. Hot water tank with antifreeze electric heater. MP99 microprocessor accessories: - TV system - Phase-lack control and line voltage displaying. - T system - Total electric absorption indication. - RC3500 card - RS232C-RS422-RS485 serial line outlet. - RCBUS card - Serial line interface for MODBUS and JBUS communication protocols. - RC3100 "N" cards - larms remotization. WRNING The units are fitted with double air circuit from size G7 included. The condenser air discharge ducting must have a partition. RC GROUP reserves the right to accept the matching of the optional installed on the unit. RC GROUP S.p.. - MLTSRL_CG_GB407_

30 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans TCHNICL DT MULTIPLO.C.LN: Chiller in extremely low noise version. MODL SIZ ONLY COOLING (1) COOLING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa ONLY HTING (2) HTING CPCITY kw COMPRSSORS Power input kw bsorbed current WTR CONDNSR Water flow m 3 /h Pressure drops kpa COOLING ND HRTING (3) COOLING CPCITY kw HTING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa WTR CONDNSR Water flow m 3 /h Pressure drops kpa COMMON CHRCTRISTICS COMPRSSORS n. Max absorbed current Starting current VPORTOR n. Max water flow m 3 /h Water content l WTR CONDNSR n. Max water flow m 3 /h Water content l FNS n. ir flow m 3 /h vailable static pressure Pa Nominal mechanical power kw Max absorbed current GS CIRCUIT n. CPCITY STPS n. DIMNSIONS Lenght mm Width mm Height mm NT WIGHT kg NRGY FFICINCY INDX (4) Cooling nominal efficiency R Heating nominal efficiency COP Heat+cool nominal efficiency COP Standard capacity steps IPLV Standard capacity steps MP 64.Z.2 74.Z Z Z.2 G7 G7 G8 G8 55,1 63,3 87,8 109,3 24,3 28,3 38,2 45,7 41,3 49,7 63,9 76,1 9,4 10,9 15,1 18,8 42,8 40,1 22,9 29,4 69,3 81, , ,1 35,1 43,9 38,2 45,4 59,8 73,5 12,1 14,2 18,8 23,6 37,8 10,7 12,7 14,5 59,5 69,4 94,6 114,9 81,5 94,5 129,7 158,9 21,1 24,4 33,1 40,8 37,1 44,5 57,2 69,9 10,2 11,9 16,2 19,7 49,9 48,2 26,6 32,5 14,2 16,5 22,6 27,7 52,1 14,3 18, ,4 6 6,4 6,4 9,6 12, ,27 2,24 2,30 2,39 3,15 3,25 3,08 3,08 2,82 2,84 2,86 2,82 3,33 3,29 3,38 3,52 2,56 2,53 2,60 2,70 1 Outdoor temperature: 35 C; Chilled water temperature outlet 7 C 2 Outdoor temperature: 7 C with 90%RH; Hot water temperature 40/45 C 3 Chilled water temperature outlet 7 C; Hot water temperature 40/45 C 4 IPLV: nergy efficiency index according to RI STNDRD MP: nergy efficiency index according to ICRR For more informations about nergy fficiency Indexes. please refer to nergy fficiency Indexes bulletin of RC GROUP Technical Literature. SUPPLY VOLTG 400/3/50 + Mp On request 230/3/50-415/3/50. RC GROUP S.p.. - MLTSRL_CG_GB407_

31 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans COUSTIC DT MULTIPLO.C.LN: Chiller in extremely low noise version. SOUND PRSSUR LVL (L P ) Sound pressure level in free field conditions on condenser coil side. MODL Sound pressure level 1m far 5m far 10m far db() db() db() 64.Z.2 74.Z Z Z ,8 58,8 53,5 57,5 50,8 52,8 47,6 51,6 MN SOUND PRSSUR LVL (L Pm ) Mean sound pressure level in free field conditions, according to ISO 3744 norm. MODL Mean sound pressure level 1m far db() 64.Z.2 74.Z Z Z IMPORTNT For further information about units acoustic data, please refer to The Noise bulletin of RC GROUP Technical Literature. RC GROUP S.p.. - MLTSRL_CG_GB407_

32 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans LCTRICL DT MXIMUN LCTRIC BSORPTION CLCULTION Through this chapter it is possible to calculate the unit maximum electric absorption (), according to extreme working conditions. The involved components are the following: - Cooling compressors electric motor - Condenser fans electric motor - Water pump electric motor (if present) The electric data of the components are indicated on relative technical data tables. XMPL: Calculation for MULTIPLO.C.STD. 64.Z.2: MXIMUM LCTRIC BSORPTION - Compressors 49, Condenser fans (*) 7,36 = Maximum electric absorption 56,36 To obtain the unit electric absorption values with different feeding voltage, please refer to the following coefficients: Feeding voltage Coefficient , ,97 IMPORTNT For water pumps and condenser fans, the values of the nominal electric absorption have been assumed to be same as plate current ones. In the normal operation the electric absorption is lower than the plate current. These values depend on the operating conditions of the unit and control of the system. RC GROUP S.p.. - MLTSRL_CG_GB407_

33 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans FNS PRFORMNC HOW TO RD TH DIGRMS Fan absorbed power Reference curve Unit pressure drops + Dynamic pressure (Pa) , (RPM) , ,6 0,4 C Total pressure ,3 (kw) 0,2 B Fan speed db() , Relative sound pressure level ,5 2 2, ir flow 6,5 (m 3 /h x 1.000) XMPL: Unit with nominal air flow of m 3 /h and total pressure 300 Pa. - ir flow m 3 /h (2 fans x m 3 /h each). - Unit reference curve = 1. - Point. Curve 1 indicates the unit pressure drops + the fan dynamic pressure for total 113 Pa. - Point B. Standard unit working point with 50 Pa of available pressure for total pressure 163 Pa. - Point C. Unit working point with 187 Pa of available pressure (see example). Total pressure =300 Pa. t the above conditions the following result will be achieved: - Fan speed 660 RPM. - ngaged power by each fan 0,8kW. Considering 10% margin one 1,1 Kw motor for each fan is installed. - Considering the nominal value, the sound pressure level will increase of the difference between two working points. t point B (nominal conditions) correspond 13,5 db(), at point C 18 db(). Therefore, 18-13,5=4,5 db(), value to be added to the nominal one indicated in technical data sheet 66+4,5=70,5 db(). RC GROUP S.p.. - MLTSRL_CG_GB407_

34 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans FNS PRFORMNCS (Pa) , (RPM) ,8 0, ,4 0, (kw) 0, db() ,5 2 2, (m 3 /h x 1.000) MULTIPLO.C.STD MODLLO Curva di riferimento 64.Z2 74.Z2 1 2 MULTIPLO.C.LN MODLLO Curva di riferimento 64.Z2 74.Z2 1 2 RC GROUP S.p.. - MLTSRL_CG_GB407_

35 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans FNS PRFORMNCS (Pa) (RPM) ,8 1 1, , , ,3 150 (kw) 0, db() (m 3 /h x 1000) MULTIPLO.C.STD MODLLO Curva di riferimento 100.Z2 124.Z2 1 1 MULTIPLO.C.LN MODLLO Curva di riferimento 100.Z2 124.Z2 1 1 RC GROUP S.p.. - MLTSRL_CG_GB407_

36 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans WORKING LOGIC The MULTIPLO working logic privilege the maximum energy saving, by producing as much simultaneously as possible chilled and hot water. It is very important to underline that the two fluids productions is absolutely independent from the external temperature conditions. It is possible to have three operation modes: COOLING The unit works as an air cooled liquid chiller. Gas/air heat exchanger "D", for total condensation heat rejection and evaporator for chilled water production "C, are simultaneously in operation. The capacity steps control is based on the cooling request. HTING The unit works as a reverse cycle heat pump liquid chiller with air evaporator. Condenser "B" for total condensation heat rejection and relevant hot water production and gas/ air heat exchanger "D", for total gas evaporation, are simultaneously in operation. t the same time, the automatic defrosting control for gas/air heat exchanger "D" is activated in order to avoid ice formation. The capacity steps control is based on the heating request. COOLING + HTING The unit simultaneously produced hot water and chilled water. The condenser "B", for total condensation heat rejection and relevant hot water production and the evaporator "C", for chilled water production, are simultaneously in operation. The capacity steps control is based on the highest request between heating and cooling ones. WORKING LOGIC COOLING HTING COOLING HTING HOT WTR HOT WTR HOT WTR P P P H B H B H B D D D G L G L G L H G O N F H G O N F H G O N F M C M C M C CHILLD WTR CHILLD WTR CHILLD WTR Compressor B Condenser for hot water production C vaporator for chilled water production D Gas/air heat exchanger No return valves F Service tap G Solenoid valves H Working cycle selection valves L Liquid receiver with safety valve M Liquid separator N Mechanical gas filter O Thermostatic valve P Motorized by-pass valve RC GROUP S.p.. - MLTSRL_CG_GB407_

37 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans OPTIONL CHILLD WTR ND HOT WTR TNKS ach tank is formed by two insulated water tanks, enclosed in a painted galvanized steel sheet box and built-in antifreeze electric heater. For transportation needs the first tank is supplied assembled under the unit, ready to work, while the second one will have to be fitted on site. CHILLR SIZ G7 G8B - G8 Capacity l Water inlet Ø 3" MPT DN 100 Water drain Ø MPT 1/2" 1/2" ir discharge Ø MPT 1/2" 1/2" mpty weight kg Dimensions mm B mm C mm D mm mm F mm G mm Fixing holes 7 n. x Ø mm 6x20 6x20 CHILLD ND HOT WTR TNKS B C F D G G D 1 Chilled water inlet. 2 Chilled water outlet. 3 Hot water outlet. 4 Hot water inlet. 5 Tank air discharge pipe. 6 Tank water drain pipe. 7 Fixing holes. RC GROUP S.p.. - MLTSRL_CG_GB407_

38 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans OPTIONL PUMPING GROUPS FOR CHILLD ND HOT WTR The water pumps are factory assembled inside the unit and they don't modify the unit dimensions. The water pumps are in line mouths type, in single or twin versions with two poles electric motors. The water pumps are standard fitted with counterflanges, with control and working electric equipment, built-in the water chiller electric board and are directly managed by the MP99 microprocessor control. With the "a" "b" "c" versions it is possible, with the same water flow, to obtain different pressure in order to adequate the pump performance to the real needs of the plant. very pumping group is fitted with expansion tank, water flow switch and safety valve. SINGL WTR PUMPS PRFORMNCS MODL P0a P0b P1a P1b P1c Installed power kw 0,95 1,1 1,5 2,2 3 Plate current 1,76 2,3 3,9 5,1 6,6 Net weight kg Power supply: 400/3/50 + Mp (kpa) 180 Mod. 64.Z.2 (kpa) 230 Mod Z.2 Total pressure P0b P0a Total pressure P1c P1b P1a Water flow (m3/h) Water flow (m3/h) RC GROUP S.p.. - MLTSRL_CG_GB407_

39 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans TWIN WTR PUMPS PRFORMNCS MODL PD0a PD0b PD1a PD1b PD2a PD2b PD3a PD3b PD3c Installed power kw 0,95 1,1 1,1 1,5 2,2 3 1,5 2,2 3 Plate current 1,76 2,3 2,6 3,9 5,1 6,6 3,9 5,1 6,6 Net weight kg Power supply: 400/3/50 + Mp Total pressure (kpa) PD0b PD0a Mod. 64.Z.2 Total pressure (kpa) PD1b PD1a Mod. 74.Z Water flow (m3/h) Water flow (m3/h) Total pressure (kpa) PD2b PD2a Mod. 100.Z Water flow (m3/h) Total pressure (kpa) PD3c PD3b PD3a Mod. 124.Z Water flow (m3/h) RC GROUP S.p.. - MLTSRL_CG_GB407_

40 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans OPTIONL SILNCING PLNUM ON CONDNSR IR DISCHRG Supplied as separate accessory for installation at site. Same characteristics as the cabinet of the chiller, the plenum is supplied with built-in weatherproof noise absorption partitions. Thanks to the particular disposition of the noise absorption partitions, the air pressure drop across the plenum is zero. NOIS LVL RDUCTION The RC GROUP catalogues show the chillers noise pressure level on gas/air heat exchanger side. The noise pressure level on fans air discharge is always higher. With the plenum it is possible to reach, on fans air discharge side, a noise pressure level value of -3dB() lower than the nominal one (on gas/air heat exchanger side), for all the chillers. The plenum reduces only the noise level on fan air discharge side. No noise level reduction on the other unit sides. xample: Noise level 1m far on gas/air heat exchanger side in free field conditions for chiller MULTIPLO.C.STD.64.Z.2 = 72 db(). Unit noise level 1m far on fans air discharge side in free field conditions: 72-3 = 69 db(). SILNCING PLNUM ON IR DISCHRG 750 Chiller size G7 G8B G8 Weight kg WRNING The units are fitted with double air circuit from size G7 included. The condenser air discharge ducting must have a partition. RC GROUP S.p.. - MLTSRL_CG_GB407_

41 MULTIPLO.C.STD/LN G Multifunctions air cooled liquid chillers with Scroll compressors and centrifugal fans OPTIONL SPRING NTIVIBRTION HOLDRS vailable on request for all liquid chillers. They are not installed on the chiller but supplied separately. The antivibration holders type and the positioning layout are showed in a specific drawing supplied with the chiller. The holders must be utilized only to eliminate the vibrations produced by the chiller. SPRING NTIVIBRTION HOLDRS Type C... R... G... Light Medium Heavy xb mm Ø x x208 C mm C x B 1. Chiller frame. 2. Hole for wrench. 3. Screw-jack for unit levelling. 4. Height setting nuts. 5. Washers. 6. ntivibration holder. 7. Base. RC GROUP S.p.. - MLTSRL_CG_GB407_

42 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans SCRW compressors kw RC GROUP TCHNICL DOCUMNTTION MLTSRW_U_GB134_1104

43 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans WORKING LIMITS COOLING MOD: vaporator water temperature: +6 C Leaving water minimum temperature. -6 C Leaving water minimum temperature by adding antifreeze. -15 C Leaving water minimum temperature by adding antifreeze and BRIN kit. +20 C Inlet water maximum temperature. Outdoor air temperature: -5 C minimum value. -15 C minimum value with condensing control system. +45 C maximum value for unit in full load conditions. +55 C maximum value for unit in partial load conditions. HOT WTR TMPRTUR RNG: C Outlet water temperature range value. HT PUMP: Outdoor air temperature: -15 C minimum value C maximum value. WRNING ll limit and working values showed in the catalogue are referred to nominal conditions with chilled water 12/7 C, hot water 40/45 and R134a refrigerant charge. For different working conditions and/ or other refrigerants, please check the limit operating conditions of the specific model with the electronic selection program RCWORLD. ll the products manufactured by the RC GROUP, in its manufacturing divisions, RC CONDIZION- TORI and MP are designed and produced with materials and components suitable to be exposed to temperatures of C without any damage to the material structure nor to the components and machines operational characteristics. In case it will be required that the RC GROUP products, for outdoor installations, will grant working continuity with outside temperatures lower than -15 C, a low ambient temperature kit, with features different for each product, is available upon request. RC GROUP S.p.. - MLTSRW_U_GB134_

44 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans The units are in compliance with C 98/37, C 89/336, C 73/23, C 97/23 norms and subsequent modifications. COMPONNTS Unit base made of epoxy painted galvanized steel sheet profiles and sandwich panel injected with noise and vibration deading material. Housing made of anodized aluminium profile frame, jointed with reinforced PVC corners and galvanized steel sheet panelling externally coated with PVC film. Technical compartment, fully enclosed and separate from the air flow, housing compressors, control, electric and regulation devices, to assure working continuity during ordinary service and preventive maintenance operations and to reduce the noise emissions. Shell and tube evaporator with one gas circuit for each compressor, steel shell and removable copper tubes, insulated with closed cells polyurethane, with safety valve and low pressure gauge for PD code models. The heat exchangers equipped with flange type hydraulic connection are supplied with counterflange. The heat exchangers equipped with Victaulic type hydraulic connection are supplied with solder pipe for the connection with pipe plant. vaporator antifreeze heater. Direct driven axial fans protected by special safety mesh. Gas/air heat exchanger with copper tubes, continuous aluminium finning with aluminium or epoxy painted galvanized steel sheet frame. Shell and tube condensers for hot water production - steel shell and copper tubes. The condensers having the hydraulic circuit in parallel. Cycle inversion defrosting system of the gas/air heat exchanger, managed by the patented dynamic control ID. The microprocessor is able to sense the real ice presenceon the gas/air heat exchanger, thanks to a dynamic reading of the evaporation parameters. In this way the microprocessor manages the defrosting cycles according to the real outdoor thermohygrometric conditions with an optimization of the electric consumption. Screw semihermetic compressors with built-in electric protection and crankcase electric heater. 3 capacity control steps for each compressor. Thermostat on gas discharge with safety limit functions for high temperature. Oil separator on discharge gas. Low oil level protection system. PartWinding starting system for model 460.V2. Star/Delta starting system fpr models 540.V2-630.V2-730.V2-820.V2. Non return valve on compressor discharge. Rubber holders for compressor. Summer step-step condensing control system acting on condenser fans, allowing the following operating conditions: - Full load with outdoor temperature from -5 to +45 C. - Partial load (if scheduled) with outdoor temperature up to +55 C. Over this limit a safety device stop the unit. - Winter working: During heat pump working the outdoor air temperature working range is included between -15 C and +30 C with leaving hot water temperature included between +30 C and +55 C. Components for each refrigerant circuit: - Valve for cycle working selection. - Suction line liquid separator. - Thermostatic expansion valve. - Liquid and moisture indicator. - lectromagnetic valve on the liquid line. - Dryer and anti-acid gas filter. RC GROUP S.p.. - MLTSRW_U_GB134_

45 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans - Liquid receiver. - Stop valves on the liquid line and on the evaporator. - Copper connecting pipings for liquid circuit line. - Copper suction line. - Copper discharge line. - Flexible pipings for pressure switches connection. - High pressure safety switches. - Pressure transducers, for monitoring, control and limit functions for high and low pressure. - Pump-down stop system. - Predisposition for by-pass 2 way motorized valve, on hot water circuit, for unit starting with low water temperature. - Refrigerant charge and non-freezing oil charge. MP99 microprocessor control system. Outdoor air temperature sensor. Temperature sensors on evaporator water inlet and outlet. Temperature sensors on condenser water inlet and outlet. IP 54 electric board equipped with: - Quick opening external panel with protective function. Safety internal panel equipped with door lock main switch, microprocessor display and auxiliary controls. - Contactors on each single load. - Magnetothermic switches on each single load (for load with nominal absorption higher than 44, fuses are installed). - uxiliary circuit and microprocessor feeding by transformer. RC GROUP S.p.. - MLTSRW_U_GB134_

46 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans OPTIONL LNO kit: - Panels and technical compartment insulated by means of special sound deadening materials. - Condensing control system by stepless condenser fans speed, through electronic regulators directly driven by the proportional signal managed by MP99 microprocessor control. Noise absorption plenum on fans air discharge, height 996mm. Spring antivibration holders (not installed). Rubber holders (not installed). Modular metallic nets for condensing coil protection. Gas/air heat exchanger with marine alloy fins. Gas/air heat exchanger with epoxy coated fins. Condensing control system with continuous variation of the condenser fans speed through electronic regulators directly driven by the proportional signal managed by MP99 microprocessor control. SQL or SM VIII Div. 1 approved pressure vessels. Compressor thermal protection relay for compressors. Compressor capacitor for power factor cosϕ 0,9. Safety flow switch on the water circuit. TR88 system for the management and the local supervision. Through RS485 serial line, every TR88 can manage max. 8 units. More TR88 can be utilized to adequate the control system to the plant units quantity. MP99 microprocessor accessories: - TV system - Phase-lack control and line voltage displaying. - T system - Total electric absorption indication. - RC3500 card - RS232C-RS422-RS485 serial line outlet. - RCBUS card - Serial line interface for MODBUS and JBUS communication protocols. - RC3100 "D" "N" cards - larms remotization. WRNING RC GROUP reserves the right to accept the matching of the optional installed on the unit. RC GROUP S.p.. - MLTSRW_U_GB134_

47 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans TCHNICL DT MODL SIZ ONLY COOLING (1) COOLING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa ONLY HTING (2) HTING CPCITY kw COMPRSSORS Power input kw bsorbed current WTR CONDNSR Water flow m 3 /h Pressure drops kpa COOLING ND HTING (3) COOLING CPCITY kw HTING CPCITY kw COMPRSSORS Power input kw bsorbed current VPORTOR Water flow m 3 /h Pressure drops kpa WTR CONDNSR Water flow m 3 /h Pressure drops kpa COMMON CHRCTRISTICS COMPRSSORS n. Max absorbed current Starting current VPORTOR Water content l WTR CONDNSRS Water content l FNS n. ir flow m 3 /h Nominal mechanical power kw Max absorbed current GS CIRCUIT n. CPCITY STPS n. DIMNSIONS Lenght mm Width mm Height mm NT WIGHT kg NRGY FFICINCY INDXIPLV 460.V V V V V.2 U9 U10 U10 U11 U12 472,1 526, ,5 843, ,2 248,5 286, ,4 388,4 456,5 436,2 81,2 90, , ,5 78,4 69,6 61,5 572,4 590,1 773,7 827,4 964, ,2 225,1 238,1 257,9 249,3 254, ,6 400,8 70,2 101,1 85,6 103,8 122,1 47,6 62,8 47,8 47,8 47,6 457,3 561,3 631,6 734,8 814,9 618,7 724,3 891,9 1018,4 1106,1 161, ,3 283,6 291,2 268,5 277,4 406,1 451,8 449,4 78,6 96,5 108,6 126,3 140,1 57,3 57,2 72,5 70,8 57,4 61,6 116,9 74,5 90, ,3 90,3 43, , ,6 12,2 12, ,8 10,8 21,6 21, , ,60 4,44 3,95 3,80 4,47 1 Outdoor temperature: 35 C; Chilled water temperature outlet 12/7 C 2 Outdoor temperature: 7 C with 90%RH; inlet hot water temperature 40 C 3 Chilled water temperature outlet 7 C; inlet hot water temperature 40 C POWR SUPPLY: 400/3/50 + Mp RC GROUP S.p.. - MLTSRW_U_GB134_

48 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans COUSTIC DT MULTIPLO.SCRW..FLX: Chiller in standard version SOUND PRSSUR LVL (L P ) Sound pressure level in free field conditions on condenser coil side. MODL Sound pressure level 1m far db() 460.V V V V V MN SOUND PRSSUR LVL (L Pm ) Mean sound pressure level in free field conditions, according to ISO 3744 norm. MODL Mean sound pressure level 1m far db() 5m far db() 10m far db() 460.V V V V V ,4 68,7 68,7 68,9 70,1 62, ,3 65,6 MULTIPLO.SCRW..FLX + LNO kit: Chiller in standard version with LNO kit. SOUND PRSSUR LVL (L P ) Sound pressure level in free field conditions on condenser coil side. MODL Sound pressure level 1m far db() 460.V V V V V.2 75,3 76,3 76,3 76,3 77,3 MN SOUND PRSSUR LVL (L Pm ) Mean sound pressure level in free field conditions, according to ISO 3744 norm. MODL Mean sound pressure level 1m far db() 5m far db() 10m far db() 460.V V V V V.2 71,3 72,3 72,3 72,3 73,3 63, ,2 66, ,3 60,3 60,6 61,9 IMPORTNT For further information about units acoustic data, please refer to The Noise bulletin of RC GROUP Technical Literature. RC GROUP S.p.. - MLTSRW_U_GB134_

49 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans WORKING LOGIC The MULTIPLO working logic privilege the maximum energy saving, by producing as much simultaneously as possible chilled and hot water. It is very important to underline that the two fluids productions is absolutely independent from the external temperature conditions. It is possible to have three operation modes: COOLING The unit works as an air cooled liquid chiller. Gas/air heat exchanger "D", for total condensation heat rejection and evaporator for chilled water production "C, are simultaneously in operation. The capacity steps control is based on the cooling request. HTING The unit works as a reverse cycle heat pump liquid chiller with air evaporator. Condenser "B" for total condensation heat rejection and relevant hot water production and gas/ air heat exchanger "D", for total gas evaporation, are simultaneously in operation. t the same time, the automatic defrosting control for gas/air heat exchanger "D" is activated in order to avoid ice formation. The capacity steps control is based on the heating request. COOLING + HTING The unit simultaneously produced hot water and chilled water. The condenser "B", for total condensation heat rejection and relevant hot water production and the evaporator "C", for chilled water production, are simultaneously in operation. The capacity steps control is based on the highest request between heating and cooling ones. WORKING LOGIC COOLING HTING COOLING HTING HOT WTR HOT WTR HOT WTR P P P H B H B H B D D D G L G L G L H G O N F H G O N F H G O N F M C M C M C CHILLD WTR CHILLD WTR CHILLD WTR Compressor B Condenser for hot water production C vaporator for chilled water production D Gas/air heat exchanger No return valves F Service tap G Solenoid valves H Working cycle selection valves L Liquid receiver with safety valve M Liquid separator N Mechanical gas filter O Thermostatic valve P Motorized by-pass valve RC GROUP S.p.. - MLTSRW_U_GB134_

50 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans OPTIONL SILNCING PLNUM ON CONDNSR IR DISCHRG Supplied as separate accessory for installation at site. Same characteristics as the cabinet of the chiller, the plenum is supplied with built-in weatherproof noise absorption partitions. Thanks to the particular disposition of the noise absorption partitions, the air pressure drop across the plenum is zero. NOIS LVL RDUCTION The RC GROUP catalogues show the chillers noise pressure level on gas/air heat exchanger side. The noise pressure level on fans air discharge is always higher. With the plenum it is possible to reach, on fans air discharge side, a noise pressure level value of -3dB() lower than the nominal one (on gas/air heat exchanger side), for all the chillers. The plenum reduces only the noise level on fan air discharge side. No noise level reduction on the other unit sides. xample: Noise level 1m far on gas/air heat exchanger side in free field conditions for chiller MULTIPLO.SCRW..FLX.460.V2 = 79 db(). Unit noise level 1m far on fans air discharge side in free field conditions: 79-3 =76 db(). SILNCING PLNUM ON IR DISCHRG 996 Chiller size U9 U10 U11 U12 Weight kg RC GROUP S.p.. - MLTSRW_U_GB134_

51 R134a MULTIPLO.SCRW..FLX U Multifunction air cooled liquid chillers with Screw compressors and axial fans OPTIONL SPRING NTIVIBRTION HOLDRS vailable on request for all liquid chillers. They are not installed on the chiller but supplied separately. The antivibration holders type and the positioning layout are showed in a specific drawing supplied with the chiller. The holders must be utilized only to eliminate the vibrations produced by the chiller. SPRING NTIVIBRTION HOLDRS Type C... R... G... Light Medium Heavy xb mm Ø x x208 C mm C x B 1. Chiller frame. 2. Hole for wrench. 3. Screw-jack for unit levelling. 4. Height setting nuts. 5. Washers. 6. ntivibration holder. 7. Base. RC GROUP S.p.. - MLTSRW_U_GB134_

52 R134a MULTIPLO.SCRW..XTR U Multifunction air cooled liquid chillers with Screw compressors and axial fans R134a MULTIPLO.SCRW..XTR U Multifunction air cooled liquid chillers with Screw compressors and axial fans TMPORRY SCRW compressors kw RC GROUP TCHNICL DOCUMNTTION MLTSRW_XTR_GB134_0705 RC GROUP S.p.. - MLTSRW_XTR_GB134_

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