DVM S Universal Communication Kit (UCK) Design Guide

Transcription

1 DVM S Universal Communication Kit (UCK) Design Guide MCM-D211UN MXD-A24K100E MXD-A32K100E MXD-A40K100E MXD-A64K100E Version

2 Definition of Universal Communication Kit Technical Specification AHU (Air Handler Unit) Design Control System Design Universal Communication Kit Installation Installation Failure Case Study

3 Definition of Universal Communication Kit

4 Definition of Universal Communication Kit What is Universal Communication Kit? Universal Communication Kit provides EEV(s) (Electronic Expansion Valve)and PBA (printed board assembly) so that a 3rd party fan coil unit (AHU, air handling unit) can be connected to a DVM S system Enhanced ventilation functions Normal Indoor unit Heat Exchanger Fan Return Air 3rd party fan coil unit (AHU) Exhaust Air Supply Air Outdoor Air EEV PBA H/X Universal Communication Kit

5 Definition of Universal Communication Kit What is Universal Communication Kit? Outdoor unit *One Universal Communication Kit = one indoor unit Communication cable: F1,F2 ASS'Y EEV(Electronic Expansion Valve) Liquid valve EEV Control Communication cable F3,F4 Return air Exhaust air Outdoor air Supply air IN sensor * Room Temperature Gas pipe OUT sensor Wired remote controller EEV(s) control refrigerant flow rate Communicates with DVM S outdoor unit Controls EEV(s) Senses return air and coil temperatures

6 Work Scope & Business Process Work Scope Warranty and Responibility

7 Work Scope & Business Process Work Scope What Samsung HVAC provides Local Supply Outdoor Universal Communication Kit Fan coil unit (AHU) DVM S Outdoor Control Kit EEV-KIT & Accessories Fan coil unit 1) PBA 2) Terminal block 3) External contact module 1) EEV(Filter included) 2) Temperature Sensor 3) Manual 1) Chassis 2) Fan 3) Heat Exchanger 4) Others Control Solutions (Optional) 1) Wired Remote Controller 2) Mode Selector (for ODU) 3) DMS2.5 / BACnet Gateway / LonWorks Gateway 1) BMS Controller 2) Damper control 3) Humidifier 4) etc. Solution

8 Work Scope & Business Process Warranty and Responsibility Universal Communication Kit is a custom item in the Samsung HVAC product lineup - Designed and applied with other company s products (3 rd party AHU) - Quality problems resulting from improper design and poor installation are possible - Can be difficult to assign responsibility of the application All customers must submit a signed contract to purchase the Universal Communication Kit 1) Customer has to take full responsibility of Universal Communication Kit application - Any customer claims from poor Cooling/ Heating/ Dehumidifying performance from this application - Any fire and electrical accidents caused from this application. - Any labor and component cost from this application. 2) Customer has to report the following items below. - All details of the project: use, application, special requirements, other HVAC equipment, etc. - All Technical/ Service/ Troubleshooting on-going information to their Regional Technical Service Manager. - Technical feedback should be relayed to their RTSM, Applications Team

9 Technical Specification Line up Main components of UCK Control kit explanation Control kit functions

10 Technical Specification Line-Up Samsung provides a guideline for internal volume of indoor unit heat exchanger for various design You can use an indoor unit design program (not provided by Samsung HVAC) You should set option code depending on indoor unit capacity (05 series advanced option code, SEG 20) Option Code Rated Capacity (Btu/h) Capacity Range (Btu/h) Heat Exchanger Volume(in 3 ) Assy EEV Number of EEVs 0 12k 7k to 18k 28 to 71 MXD-A24K100E k 7k to 18k 28 to 71 MXD-A24K100E k 18k to 30k 71 to 118 MXD-A32K100E k 30k to 42k 118 to 165 MXD-A40K100E k 42k to 60k 165 to 236 MXD-A40K100E k 60k to 72k 236 to 283 MXD-A64K100E k 72k to 96k 283 to 378 MXD-A64K100E k 96k to 144k 378 to 566 MXD-A64K100E k 144k to 192k 566 to 755 MXD-A64K100E k 192k to 240k 755 to 944 MXD-A64K100E 2 A 240k 240k to 288k 944 to 1133 MXD-A64K100E 3 B 288k 288k to 336k 1133 to 1322 MXD-A64K100E 3 C 336k 336k to 384k 1322 to 1510 MXD-A64K100E 4 D 384k 384k 1510 to 1725 MXD-A64K100E 4 Cooling Mode default Target Evaporating temperature : 44.6 F, Superheat : 1.8 F, 80 F DB, 67 F WB / OD Temperature 95 F DB, 75 F WB Heating Mode default Target High Pressure 427psi, target hot gas temperature 122 F *When connecting to Heat Recovery systems, maximum capacity for one UCK is 108,000 Btu/h due to MCU port capacity limitation.

11 Outdoor unit option setting Optional Target Settings Target evaporator temperature in cooling mode Option ODU Display Function 7-9 C ( F) 0100 Target indoor unit coil temperature measured at EVA_IN. 5-7 C ( F) Default 0101 Target indoor unit coil temperature measured at EVA_IN C ( F) 0102 Target indoor unit coil temperature measured at EVA_IN C ( F) 0103 Target indoor unit coil temperature measured at EVA_IN C ( F) 0104 Target indoor unit coil temperature measured at EVA_IN C ( F) 0105 Target indoor unit coil temperature measured at EVA_IN C ( F) 0106 Target indoor unit coil temperature measured at EVA_IN. Target high pressure temperature in heating mode kg/cm3 PSI ODU Display Function 30kg/cm3 (default) Target high pressure in heating mode 25kg/cm Target high pressure in heating mode 26kg/cm Target high pressure in heating mode 27kg/cm Target high pressure in heating mode 28kg/cm Target high pressure in heating mode 29kg/cm Target high pressure in heating mode 31kg/cm Target high pressure in heating mode 32kg/cm Target high pressure in heating mode 33kg/cm Target high pressure in heating mode

12 Technical Specification Main components of Universal Communication Kit Product Box Top (Accessories) Bottom (Control Kit) EEV Assembly Control Kit Accessories MXD-A64K100E MXD-A32K100E MXD-A40K100E MXD-A24K100E

13 Technical Specification EEV Assembly EEV EEV (B) (D) (B) (D) EEV coil (A) EEV coil (A) Filter (C) Filter (C) MXD-A64K100E, MXD-A32K100E MXD-A40K100E, MXD-A24K100E MODE A (ft) B (inch) C (inch) D (inch) MXD-A64K100E 22.97' 7.28" 3.03" 10.04" MXD-A40K100E 6.56' 6.57" 1.34" 9.65" MXD-A32K100E 6.56' 7.28" 2.91" 9.96" MXD-A24K100E 3.28' 6.37" 1.18" 9.33"

14 Technical Specification Control Kit )

15 Technical Specification Accessories It is not mandatory to connect a discharge air temperature sensor. If discharge air temperature control is required, install the sensor at the air outlet and set SEG 21 of 01 series product option to 1. / MWR-WE13N p p

16 Technical Specification Control Kit explanation Main PBA Terminal Block

17 Technical Specification Control kit explanation Main PBA Discharge temperature sensor 6 EEV3 11 Wireless receiver 16 Evap-out sensor 2 MIM-B14 (Signal input) 7 EEV4 12 Terminal 1 17 Room sensor - Power (AC24/60Hz) 3 MIM-B14 (Comp/Error signal) 8 7-segment 13 Terminal 2 18 Damper analog level - External contact 4 EEV1 9 EEPROM 14 Terminal 3 19 Enthalpy in - F1-F2, V1-V2, F3-F4 5 EEV2 10 Download connector 15 Evap-in sensor 20 Simple BMS controller

18 Technical Specification Control kit explanation Main PBA : External contact Connector Signal Input/output Function Contact short Contact open Spec B1-2 Dry contact Output Fan high Fan High on Fan off AC250V/0.3A B3-4 Dry contact Output Fan mid Fan mid on Fan off AC250V/0.3A B5-6 Dry contact Output Fan low Fan low on Fan off AC250V/0.3A B7-8 Dry contact Output Fan out Fan on Fan off AC250V/0.3A B9-10 Dry contact Output Aux heater Aux heater on Aux heater off AC250V/0.3A B11-12 Dry contact Output Defrost Defrost on Defrost off AC250V/0.3A B13-14 Dry contact Output Cool_Thermo Cool_Thermo on Cool_Thermo off AC250V/0.3A B15-16 Dry contact Output Thermo Thermo on Thermo off AC250V/0.3A B17-18 Dry contact Output Operation Operation on Operation off AC250V/0.3A B B20-21 Dry contact Input Fan check Fan normal Fan error - B22-23 Dry contact Input Free cool_in Free cool on Free cool off - B24,25,26 Input/input/com Input PT1000 -

19 Fan Coil Unit Design Design Guide System Design Heat Exchanger Design

20 Combination ratio Design Guide Compatibility DVM S HP DVM S HR DVM S Eco DVM S Water CAC Universal Communication Kit ok ok ok ok X Compatibility DMS2.5 BACnet LonWorks On/Off controller Touch controller Wireless remote controller Wired remote controller Wi-Fi kit MTFC Universal Communication Kit ok ok Only for option setting MWR-WE13N MWR-WE11N MWR-WE10N MWR-SH10N MWR-SH00N ok

21 Combination Ratio Design Guide Combination IDUs OAP AHU with UCK Max. number of indoor units Combination ratio IDUs O ~ 130% *UCK = Universal communication kit Other limitations IDUs + OAP * HP only IDUs + OAP * HP only O O ~ 100% O ~ 100% - OAP must be lower than 30% of outdoor unit capacity AHU O ~ 130% IDUs + AHU O O ~ 130% - Each AHU (UCK) capacity must be same or lower than 50% of outdoor unit capacity - AHU (UCK)'s total capacity must be same or lower than 50% of outdoor unit capacity IDUs + AHU + OAP * HP only O O O ~ 100% - OAP's total capacity must be same or lower than 30% of outdoor unit capacity - AHU (UCK) + OAP's total capacity must be same or lower than 50% of outdoor unit capacity * IDUs : Normal DVM S indoor units ex.) Cassette, Duct, Ceiling, Console, Wall Mounted * For wall mounted with EEV, it is possible to install a maximum of 32 units

22 Fan Coil Unit (AHU) Design Design Guide - Heat Pump Case 1 AHU (UCK) #1 Case 3 AHU (UCK) #1 AHU (UCK) #2 Case 2 AHU (UCK) #1 IDU #1 AHU (UCK) #2 AHU (UCK) #3 IDU #2 IDU #3 IDU #4 IDU #5

23 Fan Coil Unit (AHU) Design Design Guide - Heat Recovery Case 1 (DOAS) AHU (UCK) #1 & 2 Case 3 (Multiple units) AHU (UCK) #1 AHU (UCK) #2 Case 2 (Multiple units) AHU (UCK) #1 AHU (UCK) #3 AHU (UCK) #2 AHU (UCK) #3 IDU #1 IDU #2 *When connecting to Heat Recovery systems, maximum capacity for one UCK is 108,000 Btu/h due to MCU port capacity limitation.

24 Fan Coil Unit(AHU) Design Design Guide Heat exchanger should be direct expansion type & pressure rated to at least 595 PSI (R410A) Combination ratio * Universal communication kit can be connected to DVM S Eco Heat Pump Heat Recovery Combination ratio 1ea AHU (UCK) More than 2ea of AHU (UCK)s AHU (UCK)s + Indoor units Combination ratio 100% 130% 130% Max capacity of AHU (UCK) % of ODU capacity Combination ratio 100% 130% 130% Max capacity of AHU (UCK) % of ODU capacity AHU (UCK) Capacity design 1. Design AHU capacity according to the heat load & required fresh air ratio ~15% Heat loss may occur from delivery system such as AHU (UCK), Fan and Duct 3. Select proper size of AHU otherwise the system will have insufficient capacity ex) Required capacity > AHU capacity : Capacity shortage ex) Required capacity < AHU capacity : Refrigerant shortage Mixed air H/X Fresh air Supply design 1. Maintain the mixed air temperature before heat exchanger between 23 ~ 89.6 F. 2. Adjust Fresh air ratio or Install Pre-heater(or pre-cooler) to keep mixed air temp 23 ~ 89.6 F and * 100% fresh air supply * 1. Heat pump system only & use for ventilation only 2. AHU capacity must be designed for 100% fresh air heat load. ( 1 indoor unit x 1 outdoor unit design recommended ) 3. Maintain heat exchanger inlet air temp over 23 F. (If connection with DVM S Water, water inlet temp over 68 F or anti-freeze set) * HR system can t use 100% fresh air, max fresh air ratio for HR is 30%.(in case of DOAS - 100% fresh air is ok) *When connecting to Heat Recovery systems, maximum capacity for one UCK is 108,000 Btu/h due to MCU port capacity limitation.

25 Fan Coil Unit (AHU) Design System Design Single system (~ 16 Ton) EEV (EEV quantity : 1~4) COMMUNICATION : F1, F2 Control kit Liquid Pipe EEV wire Discharge air sensor COM :F3, F4 Room sensor Evap IN sensor Gas Pipe Heat Exchanger FAN On FAN Check Evap OUT sensor * Note Evap In" sensor has to be placed between distributor and heat exchanger. (sensor should be insulated) Evap Out" sensor has to be placed on the gas pipe behind 7.87 from collector. (sensor should be insulated)

26 Fan Coil Unit (AHU) Design System Design 2 Systems * 40 Ton = 16 Ton + 24 Ton F1,F2 F1,F2 Liquid Pipe Liquid Pipe FAN On FAN check Air Flow F3/F4 Gas Pipe Note: Combine (2) DVM S system s with one large AHU. Each system's cycle and communication are independent. Fan on & check should be connected to each UCK if each kit will be controlled individually

27 Fan Coil Unit (AHU) Design System Design 3 Systems * 80 Ton = 32 Ton + 24 Ton + 24 Ton F1,F2 F1,F2 F1,F2 Liquid Pipe Liquid Pipe FAN On FAN check Air Flow F3/F4 Gas Pipe Note: Combine 3 DVM S system s with one large AHU. Each system's cycle and communication are independent. Fan on & check should be connected to each UCK if each kit will be controlled individually

28 Fan Coil Unit (AHU) Design Heat exchanger size Below table can be used as a general guide for internal volume of AHU heat exchanger You can use an independent AHU design program for heat exchanger size (recommended) You should set option code depending on indoor unit capacity (05 series installation code, SEG 20) Option Rated Capacity Capacity Range Heat Exchanger Code (Btu/h) (Btu/h) Volume(in 3 ) Assy EEV Number of EEVs 0 12k 7k to 18k 28 to 71 MXD-A24K100E k 7k to 18k 28 to 71 MXD-A24K100E k 18k to 30k 71 to 118 MXD-A32K100E k 30k to 42k 118 to 165 MXD-A40K100E k 42k to 60k 165 to 236 MXD-A40K100E k 60k to 72k 236 to 283 MXD-A64K100E k 72k to 96k 283 to 378 MXD-A64K100E k 96k to 144k 378 to 566 MXD-A64K100E k 144k to 192k 566 to 755 MXD-A64K100E k 192k to 240k 755 to 944 MXD-A64K100E 2 A 240k 240k to 288k 944 to 1133 MXD-A64K100E 3 B 288k 288k to 336k 1133 to 1322 MXD-A64K100E 3 C 336k 336k to 384k 1322 to 1510 MXD-A64K100E 4 D 384k 384k 1510 to 1725 MXD-A64K100E 4 Evaporating temperature : 44.6 F, Superheat : 1.8 F Indoor temperature 80 F DB, 67 F WB / Outdoor temperature 95 F DB, 75 F WB *When connecting to Heat Recovery systems, maximum capacity for one UCK is 108,000 Btu/h due to MCU port capacity limitation.

29 Fan Coil Unit (AHU) Design Airflow direction Example for cooling Air flow EEV Heat Exchanger Air flow In Out Airflow direction Based on Heat Pump Air Ref Ref Air Cooling Heating

30 Fan Coil Unit (AHU) Design Heat Exchanger Design - Refrigerant path examples *Use a AHU design program, if available EEV One EEV EEV #1 EEV #2 Two EEV's 3 or more EEV's EEV #1 EEV #2 EEV #3 EEV #4 EEV #1 EEV #1 EEV #1 EEV #2 EEV #2 EEV #2 EEV #3 EEV #4 EEV #3 EEV #4 Intertwined design

31 Fan Coil Unit (AHU) Design Heat Exchanger Design - Refrigerant path examples EEV #1 EEV #2 EEV #1 EEV #1 EEV #2 EEV #2 Cycle balanced cycle between EEV #1 & #2 Unbalanced cycle between EEV #1 & #2 balanced cycle between EEV #1 & #2 Capacity Good Insufficent Good When One EEV is working Bypass air results in a capacity drop Good Good * For large capacity, normally heat exchanger is designed as #1 for easy production

32 Fan Coil Unit (AHU) Design Heat Exchanger Design - General Application Case 1 Case 2 Case 3 EEV #1 EEV #1 EEV #1 EEV #2 EEV #2 EEV #2 Capacity control 100% 50~100% 50~100% Back up operation No No Available Installation cost Low Middle High Application For Small Capacity For Middle Capacity For Large capacity

33 Function Design Guide Fan On contact signal and Fan Check signal Defrost contact signal External contact controller (MIM-B14) Remote controller Simple BMS (controller) Discharge air temperature control

34 Function Function list Fan Interlock Economizer Function Explanation Signal Input/output Spec Fan control Fan speed control (high / mid / low) Dry contact Output AC250V/0.3A Fan check signal Fan normal / error monitoring Dry contact Input - Aux heater control Aux heater on/off control (Fan = High)(02 series SEG 9) Dry contact Output AC250V/0.3A Defrost signal Defrost signal output Dry contact Output AC250V/0.3A Thermo on signal Thermo on signal output Dry contact Output AC250V/0.3A Operation on signal Operation on signal output Dry contact Output AC250V/0.3A Cooling thermo on signal Free cooling signal Cooling thermo on signal output * Interlocking with economizer Free cooling on * Interlocking with economizer Dry contact Output AC250V/0.3A Dry contact Input - Sensor Enthalpy sensor Cooling thermo-on control by enthalpy value 4~20mA Input - Interlock Controller Damper control Simple BMS Control damper angle (0~100% open) by condition 0~10VDC Output - Dry contact & 0~10VDC Input -

35 Function Fan motor control *UCK: Universal Communication Kit Function Purpose - Fan speed control depending on motor type How to apply - Installation option setting is required (Installation option 02 series, SEG 24) Fixed speed type: Fan out contact signal occurs depending on Fan on/off Only high speed is displayed & selected in the wired remote controller and upper level controller Step motor type: H/M/L speed control is possible by each contact signal H/M/L speed is displayed & selected in the wired remote controller and high level controller * BLDC motor can be connected but UCK sends only fan speed contact signal. UCK doesn t include BLDC motor driver. Control Logic Fan ON Is option code fixed speed type? Yes Fan out contact available No H/M/L contact signal available

36 Function Fan motor control Wiring Connection Option Code Setting Universal Communication Kit Installation option setting is required for this function B1 B2 B3 B4 B5 B7 B9 B11 B13 B15 B17 B19 B21 B23 B25 B6 B8 B10 B12 B14 B16 B18 B20 B22 B24 B26 Please refer to the installation manual in detail Installation option 02 series SEG 24 Power com Power Power H M L Step motor Power (Field supplied) Relay (Field supplied) N L Motor (Fixed) Relay Indication 0 (Default) Options Model type Enthalpy S/S Fan Motor Common Disuse Fixed 1 DOAS Disuse Fixed 2 Common Use Fixed 3 DOAS Use Fixed 4 Common Disuse Step speed 5 DOAS Disuse Step speed 6 Common Use Step speed 7 DOAS Use Step speed [CASE 1 Step speed] [CASE 2 - fixed speed] If motor drive power is supplied separately contact can be used for motor control signal without a relay

37 Function Fan feedback check Function Purpose To check indoor unit fan status to prevent system from running while indoor unit fan is stopped Recommended to use this function when possible for system reliability How to apply Non voltage contact signal input is needed from fan relay to fan check terminal (B20/B21) when indoor unit fan is running Relay opens when fan is running, Relay closes when fan is stopped. (Installation option setting is required) Control Logic No Relay Open System OFF (Error : E154) Power ON Operation ON? Yes Fan ON? Yes Relay Close Syetem Run (No Error) No System OFF Fan OFF Relay Open Syetem OFF (No Error)

38 Function Fan feedback check Wiring Connection Universal Communication Kit Option Code Setting Installation option 05 series SEG21 B1 B2 B3 B4 B5 B7 B9 B11 B13 B15 B17 B19 B21 B23 B25 B6 B8 B10 B12 B14 B16 B18 B20 B22 B24 B26 Installation option setting is required to use fan feedback check function [Installation option 05 series SEG21] Indication Option Details Relay 0 (Default) Disuse Fan error does not occur even though there is no input signal of fan feedback contact Fan Dry contact 1 use Fan error (E154) occurs when there is no input signal of fan feedback contact 3rd party, field supplied product Warning No voltage contact signal should be used (dry contact)

39 Function Defrost signal Function Purpose To bypass the refrigerant while defrost so that can prevent cold air supply into the room, This function is not recommended to be used to secure system reliability How to apply It works by wiring connection between Universal Communication Kit and defrost bypass valve Installation option setting is required (05 series installation option: SEG 22) During the defrost operation (contact short) fan will keep operating (follows cold wind prevention control) Control Logic Defrost operation start 05 series SEG 22 is 1 Yes Yes Defrost Is defrost Defrost time Yes contact short operation finished? > 3min. Defrost contact open No No No Defrost contact open Defrost contact open

40 Function Defrost signal Wiring Connection Universal COMM. KIT Option Code Setting Installation option setting is required for this function B1 B2 B3 B4 B5 B7 B9 B11 B13 B15 B17 B19 B21 B23 B25 B6 B8 B10 B12 B14 B16 B18 B20 B22 B24 B26 Please refer to the installation manual in detail Installation option 05 series SEG 22 Power Relay 1 (N.O) Indication Option Details Mode Valve 1 Valve 2 Cooling ON OFF Heating ON OFF Defrost OFF ON (Field supplied) Relay 2 (N.C) Valve 2 0 (Default) 1 Use Disuse While in defrost, Fan stops & defrost contact is open While in defrost, Fan keeps operating & defrost contact signal is closed within 3mins Valve 1 Relay 1: Normally open type, Relay 2: Normally closed type [Installation example] Gas pipe ODU Valve 2 Liquid pipe IDU Valve 1

41 Function Defrost signal Mode Heat Defrost Heat Defrost signal off 3 minute delay To secure sufficient defrost, bypass valve will work 3 minutes after defrost cycle starts. If defrost bypass valve function is activated, AHU fan will operate during defrost cycle. Cold air can be supplied into the room during the 3 minute time delay * After defrost cycle, AHU fan may stop automatically if cold wind prevention function is activated 3 minute delay on off Case 1 Case 2 Case 3 EEV #1 EEV #1 EEV #2 EEV #2 AHU Fan * AHU fan on control use Stop On Cold air can be supplied during defrost On Cold air can be supplied during defrost Defrost time Normal Longer than Case 1 Shorter than Case 1 Features Fan stops during defrosting Continuous fresh air supply Continuous heating

42 Function Thermo / Operation contact signal Purpose Function Optional component operation by contact signal How to apply Uses wired contact connection between Universal Communication Kit PBA and 3 rd party component Installation option setting is required for Thermo ON/OFF output signal (02 series installation option: SEG 10) No installation option setting is required for Operation output signal Control Logic Operation ON contact signal(regardless of option setting) : Operation ON Contact signal is short (Ex : Operation LED) Thermo ON contact signal (Ex: exhaust fan) (1) 02 series SEG 10 = 0 or 2: If Thermo ON occurs, contact signal is short (2) 02 series SEG 10 = 1 or 3: If Thermo ON and Fan ON, contact signal is short Power ON Operation ON? Yes Operation Contact: Short Thermo ON? Yes Thermo Contact: short No No Operation Contact: Open Thermo Contact: Open

43 Function Thermo On / Operation contact signal Wiring Connection Universal Communication Kit B1 B3 B5 B7 B9 B11 B13 B15 B17 B19 B21 B23 B25 B2 B4 B6 B8 B10 B12 B14 B16 B18 B20 B22 B24 B26 Option Code Setting Installation option setting is required for this function Please refer to the installation manual in detail. Installation option 02 series SEG 10 Power Operation ON contact signal (Field supplied) Power Thermo ON contact signal (Field supplied) Indication 0 (Default) Contact short Thermo on Option Cooling Thermo on contact: including dehumidification No 1 *Thermo on & Fan on No 2 Thermo on Yes 3 Thermo on & Fan on Yes Load 1 Load 2 Choose detail condition for Thermo ON signal. Interlock with fan condition (for heating and cooling) Includes dry mode when cooling thermo on signal output * Even though the system is Thermo ON condition, the fan can be off. If Evaporator temperature is low during heating operation, the fan can be off to prevent cold air supply. Defrost operation (Fan off)

44 Function Remote controller Wireless remote controller Wireless signal receiver is adapted from previous DVM S AHU Kit To set installation option codes when installed without wired R/C Signal receiver Wired remote controller Control the AHU On, Off, Fan, Discharge air temperature control, etc. MWR-WE1*N F1 F2 V1 V2 F3 F4 Connect F3,F4 Do not connect V1, V2

45 Function Temperature sensor Function Purpose Set sensor type of room and discharge temperature sensor (supplied sensor or PT 1000) Temperature sensor sharing function for multiple Universal Communication Kits. How to apply Installation option setting is required (05 series SEG 24) Room temperature sensor : Supplied sensor / wired remote controller sensor / PT1000 (field supplied) Discharge temperature sensor : Supplied sensor / PT1000 (field supplied) Sensor master selection : No setting / master / slave Control Logic Temperature sensor selection logic PT1000 cannot use both room sensor and discharge temperature sensor. Sensor master selection logic No setting: Use own sensor value (Master temperature sensor s value is not applied.) Master setting: Use own sensor value (temperature value will be shared to slave units through wired remote controller) Slave setting: Use master unit s sensor value

46 Function Temperature sensor Wiring Connection Installation condition (Example) Room temperature sensor : PT1000 UCK 0: Master / UCK (1~3): Slave SLAVE Universial Communication Kit 3 MASTER Universial Communication Kit SLAVE Universial Communication Kit 2 SLAVE Universial Communication Kit 1 *Room temperature sensor sharing uses the communication of wired remote controller, so wired remote controller should be installed Option Code Setting Installation option setting is required for this function Please refer to the installation manual in detail Installation option 05 series SEG 24 Options Indication Room temp. sensor Discharge temp. Sensor Temp. sensor master 0 (Default) Supplied Supplied No 1 PT1000 Supplied No 2 Supplied PT1000 No 3 Wired remote controller Supplied No 4 Wired remote controller PT1000 No 5 Supplied Supplied Master 6 PT1000 Supplied Master 7 Supplied PT1000 Master 8 Wired remote controller Supplied Master 9 Wired remote controller PT1000 Master A Sharing temperature of master Slave

47 Function Discharge air temperature control Purpose To control the discharged air temperature of AHU Setting range: Cooling: 46 ~ 77 F / Heating: 64 ~ 109 F * Thermo ON/OFF will be controlled according to the room temperature & set temperature * Product option code Normal: Discharge temperature control : Caution : Discharge air temperature control may not work properly according to operation condition How to set (Product option code ( 01 code), Segment 21 must be 1 ) 1. DMS2.5 Open Remote controller panel Set discharge temperature control : activation, target temperature DMS 2 control panel 2. Wired remote controller Set the option in service mode (Press Set & ESC for 3 secs) * Set temperature in normal mode is for target room temperature regardless of discharge option setting condition. will be displayed on remote controller when discharge air temperature control is activated

48 Function Discharge air temperature control Room temp control Discharge temp control Thermo ON/OFF Room temp & target room temp. Compressor capacity control Gap of room temp * target room temp. Gap of discharge temp & target discharge temp. Purpose Stable room temperature Stable discharge tempature Remark Discharge temp will be changed by room temp. room temp --> discharge temp. room temp --> discharge temp. discharge temp will be always same. room temp --> discharge temp.= target room temp --> discharge temp.= target If ODU Max Cooling Capacity Restriction (option # 18) is set as use then discharge air temperature control will not work.

49 Function Discharge air temperature control CASE 1: One On One system * DATC = Discharge air temperature control CASE 2: All indoor units have DATC - Compressor capacity control only (SH = 3.6 F) - Compressor capacity control : Decided by total capacity of the system - SH control: Differentiate each IDU s discharge air temp. CASE 3: DATC indoor units + General indoor units CASE 4: DVM S HR system - All general IDUs off (or thermo off): Same as case 1,2 - At least one general IDU on (or thermo on) *Superheat control only - Cooling or Heating only: Same as case 1,2 and 3 - Main cooling/ main heating: No discharge air temperature control due to cooling/heating IDUs affect to each other * In case of DOAS option setting: DATC of heating unit is possible by EEV control in main cooling mode

50 Function Economizer (Free cooling) Function Purpose - Energy saving is possible by free cooling with intake of 100% fresh air during cooling operation when outdoor temperature is low Free cooling operation : Thermo OFF (Indoor unit fan on + compressor stop) and then use low temperature fresh air for cooling How to use 1. Dry contact output (Thermo ON) signal from Universal Comm. Kit PBA (B13,14) to economizer when in cooling Thermo ON 2. Economizer decides to use free cooling or not: Low ambient temperature & Universal Communication Kit is cooling Thermo ON 3. Dry contact input from economizer to Universal Communication Kit PBA (Terminals B22, 23) * Installation option setting is not required (If DOAS option is set to use, free cooling function is not activated) Control Logic Cooling ON Thermo ON? Yes Is free cooling option set? Yes Is free cooling signal activated? Yes Thermo OFF (Free cooling start) No No No Thermo OFF Thermo ON Thermo ON Economizer No Thermo on signal input? Yes No Free cooling condition? Yes Free cooling signal output

51 Function Economizer (Free cooling) Wiring Connection [B13/B14] Dry contact output (cooling thermo on) - Contact short: Cooling thermo on / Contact Open: others Universal Communication Kit [B22/B23] Dry contact input(free cooling signal) - Contact short: Free cooling available - Contact open: Free cooling not available (normal cooling) B1 B2 B3 B4 B5 B7 B9 B11 B13 B15 B17 B19 B21 B23 B25 B6 B8 B10 B12 B14 B16 B18 B20 B22 B24 B26 [Example of free cooling operation by Economizer] Cooling thermo on Relay1 Close Y1I Activate Economizer decides normal cooling Y1O Activate Relay 2 Open Normal cooling operation Cooling thermo on Relay 1 Close Y1I Activate Economizer decides free cooling Y1O Deactivate Relay 2 Close Free cooling operation Damper Actuators (Field supplied) Economizer Controller (Field supplied) 24VAC Com. Relay 1 Normally open type Power 24VAC (Field supplied) Com. Relay 2 Normally close type

52 Function Economizer (Free cooling) Wiring Connection Economizer - Economizer will decide to use free cooling or not and then output free cooling signal - Economizer may be required depending on climate zone and/or local code. Economizer sequence (Case 1: by ambient temperature) - Set ambient temperature to start free cooling (Can be various according to the location) in humid climates, setting value is normally lower then dry climates. - Ambient temperature < set value Free cooling signal output compressor stop Economizer sequence (Case 2: By Enthalpy) - Use dry bulb/wet bulb thermometer to sense enthalpy of fresh air & return air - Judge Free Cooling available area (A&B) then signal output - A : Fresh air enthalpy < Return Air enthalpy - B : Fresh air temperature < Return Air temperature Free cooling B

53 Function Ventilation Damper Function Purpose - To control damper angle (0~100%) by 2~10VDC output for ventilation (Control every 10%) How to configure - It works by means of wiring connection between UCK PBA and ventilation damper - Installation option setting is required (05 series installation option: SEG14 / SEG15 / SEG16) SEG 16: Setting damper use or disuse & Damper actuator type (fixed / variable) SEG 15: Setting minimum outdoor temperature for opening damper (Damper opens only above minimum outdoor temperature) SEG 14: Setting damper minimum output (When damper opens damper output holds minimum output at least) Control Logic Operation ON Damper use? (SEG 16) Yes Is outdoor temp. > SEG15? Yes Fan mode? No Output Fixed or Variable (SEG 14) No No Yes Fixed Variable Damper output 0Vdc - 0% (Close) Damper output 0vdc - 0% (Close) Damper open Minimum output Variable damper output occurs

54 Function Ventilation Damper Control Logic Control logic of variable damper output Variable output (2~10VDC) occurs depending on the difference of room temperature and set temperature When thermo off: output = minimum - To prevent room temperature decreasing or increasing by fresh air after thermo off Damper output [VDC] = Damper_output / , Ex) Damper_output 60% = 60/ = 6.8VDC Control logic of variable output in case of connecting economizer controller When free cooling contact input is closed by economizer controller, damper output is 100% (full open) 100% (10V) [Heating operation] 100% (10V) [Cooling operation] [Damper output (%)] minimum 0% (2V) -3.6 F -1.8 F 0 F 1.8 F (Thermo OFF) [Room temperature Set temperature 1.8 F] [Damper output (%)] minimum Thermo off Thermo on Thermo off Thermo on 3.6 F 0%(2V) -5.4 F * Ambient temperature 50 F Output = Minimum -3.6 F -1.8 F 0 F 1.8 F (Thermo OFF) [Room temperature Set temperature]

55 Function Ventilation Damper Damper Wiring Connection COM + 0~10VDC output (COM) (24V) Power (24V) (Field supplied) Note: Match polarity (24) (COM) (+) Damper Actuators (Field supplied) Option Code Setting Installation option setting is required for this function Please refer to the installation manual in detail Installation option 05 series SEG16 Setting damper use and output type Indication Damper use in Fan mode 05 series SEG16 Damper output (Cooling) Damper output (Heating) 0 (Default) Damper disuse 1 ON Variable Variable ~ ~ ~ ~ 8 OFF Fixed Fixed Installation option 05 series SEG14 Indication Option 0 10% 1 20% 2 (Default) 30% ~ ~ 9 100% Setting damper minimum output Installation option 05 series SEG15 Indication Option 0 68 F 1 59 F 4 (Default) 32 F ~ ~ 8-4 F Setting minimum outdoor temperature for opening damper

56 Function Enthalpy sensor Function Purpose Cooling operation for dehumidification using enthalpy sensor (DOAS system is recommended) to supply comfort fresh air How to configure Install enthalpy sensor to Universal COMM. kit Enthalpy sensor (manufacturer / model name): Honeywell / C7400A (4~20mA) Other enthalpy sensors are not compatible. (enthalpy range may different) Installation option setting is required 02 series installation option SEG24: Setting enthalpy sensor use or disuse 05 series installation option SEG12: Criterion enthalpy setting (Suitable value selection is possible depending on local condition) Control Logic Cooling Thermo off condition Enthalpy Sensor use? Yes Is enthalpy input above 2mA? Yes current enthalpy > SEG12 (criterion enthalpy)? Yes Maintain cooling Thermo ON No No No Cooling Thermo OFF Operation OFF Error Display (E189) Cooling Thermo OFF

57 Function Enthalpy sensor Control Logic Cooling thermo on occurs if current enthalpy value is above criterion enthalpy ( A ) Cool Cool thermo off Cool Ambient sensor Fresh air 68 F/ 64.4 F Enthalpy sensor [Enthalpy sensor] IDU1 Cool (59 F/55.4 F) IDU2 Heat Enthalpy Btu/lb. 68 F/59 F Supply comfortable air A : criterion enthalpy B : entering temperature set value Entering temperature Enthalpy Sensor not applicable Enthalpy Sensor applicable Above B 2 : Thermo ON 2 : Thermo ON Enthalpy 50.9J/kg Ambient sensor Fresh air 68 F/64.4 F [No Enthalpy sensor] IDU1 Fan mode (68 F/64.4 F) IDU2 Fan mode Supply humid air 68 F/64.4 F Below B 1 : Thermo OFF 3 : Thermo OFF 1 : Thermo OFF 3 : Thermo ON Enthalpy Btu/lb.

58 Function Enthalpy sensor Wiring connection Honeywell / C7400A (4~20mA) (Field supplied) Enthalpy Sensor (-) (+) (Field supplied) Power (12 to 40Vdc) (+) (com) Option code setting Installation option 02 series SEG24 Indication Options Model type Enthalpy S/S Fan Motor 0(Default) Common Disuse Fixed 1 DOAS Disuse Fixed 2 Common Use Fixed 3 DOAS Use Fixed 4 Common Disuse Variable 5 DOAS Disuse Variable 6 Common Use Variable 7 DOAS Use Variable Installation option 05 series SEG12 Set a criterion of enthalpy to thermo on Note: Match polarity (+) COM Current enthalpy > Setting value: Thermo on Indication Option Btu/lb Btu/lb Btu/lb. 3(Default) 21.5 Btu/lb Btu/lb Btu/lb.

59 Function DOAS setting * DOAS: Dedicated outdoor air system No. Control logic 1 Preventing cold wind 2 Discharge air temperature control in HR mode Installation option 02 series SEG 24 "Common" setting "DOAS" setting Fan off when average evaporator temperature is below 82 F in heating. Impossible 3 Thermo OFF decision Depending on room temperature only 4 Operation restriction depending on outdoor temperature Use Fan off when average evaporator temperature is below 41 F Possible (Only heating discharge temperature control is possible in main cooling operation) Heating unit controls EEV step depending on target discharge temperature Depending on room temperature or discharge temperature Disuse

60 Function EEV and Capacity Purpose Function Indoor unit capacity setting by option code EEV model and quantity selection depending on indoor unit capactiy How to apply Refer to the below installation option setting 12k ~ 384k capacity range Maximum EEV quantity is four Wiring Connection Option Code Setting Installation option 05 series SEG20 Selection option code for indoor unit capacity is required a o

61 Function Simple BMS Function Purpose Simple controller : Cooling on, Heating on, Target Temperature Setting Make your own controller How to apply Cooling on : Cool-com short / Heating on : Heat-com short / Auto on : Auto-com short Target temperature setting : 0~10V input * Select room temperature or discharge air temperature from installation option (05 series seg17) Refer to the control value depending on input voltage (2~10VDC) through installation manual Control Logic Simple BMS is connected Is cool-com short? Yes Cooling operation start There is input voltage by simple BMS No Is Heat-com short? Yes Heating operation start 05 series installation SEG17=0? No Discharge air temperature setting Stop No No Is Auto-com short? Yes Auto operation start Yes Room set temperature setting

62 Function Simple BMS Wiring Connection Option Code Setting (Field supplied) Dry contact (Field supplied) 0~10VDC (Voltage) input) Installation option setting is required for this function Please refer to the installation manual in detail Installation option 05 series SEG17 Input Value Option Details (+) COM 0 (Default) Room Temperature Target room temperature setting is possible by simple BMS 1 Discharge air temperature Target discharge air temperature setting is possible by simple BMS Cool Heat Auto COM Temp COM Enthalpy

63 Function Simple BMS Room temperature setting Range Heating Cooling ±0.2 VDC C F C F Temp Temp C y = 2.5x F y = 4.5x C VDC F VDC

64 Function Simple BMS Discharge temperature setting Cooling: 46.5 F~77.0 F / Heating: 64.4 F~109.4 F Ex) cooling discharge temp 86 F the controlled value: 77 F y = 7.2x C y = 4x C F F 43 C F C VDC F VDC

65 Function Simple BMS (Controller) Keep the power supply of Simple BMS in 10 V ± 0.2 V. If the Simple BMS uses Variable Resistor(VR), make the electric resistance of VR under 1kΩ to avoid the electric loading effect. Simple BMS which uses Variable Resistor(or voltage divider) need to be connected to the AHU-KIT with 1:1 connection. Use the Simple BMS which outputs voltage so that one Simple BMS controls several AHU-KIT at the same time. TEMP COM TEMP COM TEMP COM Variable Resistor TEMP COM TEMP COM Caution Make sure that Simple BMS is connected to DC power supply before installing. Never connect Simple BMS to AC power supply.

66 Function External Controller(MIM-B14) Purpose: To use external contact signal Option Setting: Input signal 02 series installation option, Seg 14, 0(Disuse), 1(On/Off), 2(Off only) * Change particular option : 0D2141 Relay(5, 6) ( Seg 14) Setting = 1 (On/Off) Setting = 2 (Off) Close Run Standby Open Stop Stop R/C control while Open Able Disable Option Setting : Operation output 02 series installation option, Seg 15, 0(Thermo on/off), 1(Operation on/off) * Change particular option : 0D2150 Indoor unit Status Relay (3, 4) - Operation (Seg 15) Setting = 0 Setting = 1 Off Open Open Fan on Open Close Contact Input Operation output Error Output Thermo on Close Close Thermo off Open Close Option Setting : Not Required Indoor unit (Seg 16) Normal Indoor unit Error Relay (1, 2) - Error Close open

67 Universal Communication Kit Installation EEV Installation (Electronic Expansion Valve) Sensor Installation Wiring - Single UCK Wiring - Multiple UCK Wiring - Cable types Additonal Refrigerant Calculation Method Control Kit Option Settings

68 Universal Communication Kit Installation EEV Installation (Electronic Expansion Valve) Standard for vertical installation Standard for vertical installation A Insulator Clamp Clamp (responsibility of installer) A B Insulator (responsibility of installer) A: High pressure pipe from outdoor unit (IN) Diameter: Ø 1/2" B: Low pressure pipe to indoor unit heat exchanger (OUT) Diameter: Ø 1/2" *Diameter of "A" and "B" is 3/8" for MXD-(24/40)K100E

69 Universal Communication Kit Installation EEV Installation (Electronic Expansion Valve) When there is one EEV: Connect to EEV-1 When there are two EEV's: Connect to EEV-1, EEV-2 When there are three EEV's: Connect to EEV-1, EEV-2, EEV-3 When there are four EEV's: Connect to EEV-1, EEV-2, EEV-3, EEV-4 EEV-1 EEV-2 EEV-3 EEV-4 Wire Strap

70 Universal Communication Kit Installation Sensor Installation 1) IN sensor: after the distributor, on the coldest part of the heat exchanger pipe. 2) OUT sensor: approximately 7 7/8 (200mm) behind the header of AHU heat exchanger. 3) IN/OUT sensor should be insulated for optimized system performance. 4) Room temperature sensor : where room air enters. In case of DOAS, install ROOM temperature sensor and enthalpy sensor (optional) on the OA (Outdoor Air) path before the heat exchanger Distributor *Prevent condensate water from entering sensor wire connection Example of Room Temperature sensor installation Return air Exhaust air Supply air Outdoor air Evap In Sensor Refrigerant flow Cool mode Header 200 Evap Out Sensor Heat mode Location of room temperature sensor

71 Universal Communication Kit Installation Sensor Installation Evap_In Sensor: Position "A" Evap_In Sensor: Position "B" Piping from DVM S Outdoor Unit AHU Heat Exchanger EEV Distributor If distance between EEV and AHU heat exchanger is excessive: Piping from EEV to AHU heat exchanger: Pressure drop increases as pipe distance increases Sensor at position "A" detects higher temperature than at position "B" EEV will close (decrease step) to make [Evap in - Evap out] = 3.6 F Refrigerant shortage = AHU Capacity decrease Place Evap_In sensor at coldest part of heat exchanger pipe to protect against freezing

72 Universal Communication Kit Installation Sensor Installation Brazing Try to make full conact with pipe surface before brazing. Identify IN and OUT sensors before install. (IN and OUT sensors are different sizes.) Braze the holder on the pipe Insert sensor and the sensor clip Bend end of the sensor clip to secure Insulate Tape Try to make full contact with pipe surface. Do not use the sensor holder. Identify IN and OUT sensors before install. (IN and OUT sensors are different sizes.) Be aware not to cross install the sensors in module installations Fix sensor with aluminum tape Put rubber tape around it Tighten the sensor with cable tie insulate

73 Universal Communication Kit Installation Wiring - Single UCK B1 ~ B18 : DRY CONTACT OUTPUT B20 ~ B23 : DRY CONTACT INTPUT Use the rated current capacity for the dry contact within AC250V/0.3A. Power Source

74 Universal Communication Kit Installation Wiring - Single UCK DAMPER SIGNAL ( 0~10VDC) Evap Out Sensor Room Sensor 1 2 Evap In Sensor AC POWER AC24V Wired Controller AC24V: POWER INPUT AC24V F1/F2: INDOOR - OUTDOOR V1/V2: 12VDC F3/F4: Wired R/C communication EVA IN/OUT, ROOM Sensor: Temperature sensor DAMPER: CONTROL SIGNAL (DC 0~10V)

75 Universal Communication Kit Installation Communication Wiring - Multiple UCK UCK 0 UCK 2 UCK 1 *UCK: Universal Communication Kit 24VAC (Power for UCK) 24VAC Power for UCK 24VAC Power for UCK Communication F1,F2 Wired controller F3,F4 Do not jumper the power between Universal Communication Kits * Communication wiring is the same as normal DVM S indoor units F1, F2 Communication : Connect to outdoor unit. (Do not use star wiring pattern) F3, F3 Communication : Connect to wired remote controller. (Do not use star wiring pattern)

76 Universal Communication Kit Installation Fan Wiring - Multiple UCK *UCK: Universal Communication Kit UCK 0 UCK 1 Fan on signal Power Source UCK fan motor controller AHU fan working status Contact signal from fan 1. Fan on/off output should be connected to each UCK parallel 2. Fan check input should be connected to each UCK separately (dry contact but 12V will return through the relay) 3. AHU fan motor power should be connected from a separate power source (Do not use the UCK fan output to power the motor) 4. Set the option code for fan feedback control. (05 series installation option setting, Seg 21, 1(USE))

77 Universal Communication Kit Installation Additional Refrigerant Calculation Method Formula for additional refrigerant The quantity of additional refrigerant is decided by capacity of AHU A = C[kw] * A: Additional refrigerant [kg] C: AHU Capacity[kw] * After the calculation, the label of additional refrigerant quantity has to be attached to the unit. **During start-up, SNET Pro 2 service software should be used to check system operation. The start-up personnel should verify all outdoor unit operating parameters, indoor unit coil temperatures, and EEV position(s) are within the normal ranges typically seen on a DVM S system. Additional refrigerant adjustments may be necessary. Systems that are overcharged or undercharged can have reduced capacity and will impact system reliability. The start-up personnel should record system operation (using SNET Pro 2) during the trial and test operations performed at start up. These recordings should be saved for future reference.

78 Universal Communication Kit Installation Control Kit Installation 1. Control box including PBA should be installed outside of the AHU cabinet in order to avoid possible damage from moisture. 2. Control box should be waterproof and fireproof. Also, avoid exposing the PCB to direct sunlight.

79 Universal Communication Kit Installation Installation setting - 02 series

80 Universal Communication Kit Installation Installation setting - 02 series (*2) 1 : Fan is turned on continually when the hot water heater is turned on, 3 : Fan is turned off when the hot water heater is turned on with cooling only indoor unit * Cooling only indoor unit: To use this option, install the Mode Select switch (MCM-C200) on the outdoor unit and set it as cool mode. 4: Fan speed is high continuously when the hot water heater is turned on (*4) T-ON Fan Sync.: No - Thermo on signal output (ex. Defrost) / Yes - Thermo on & Fan on signal output Cooling T-ON & Dehumidification: not including - Cool/Heat thermo on Signal output / Including - Cool/Heat/Dry thermo on signal output

81 Universal Communication Kit Installation Installation setting - 02 series (*3) 2: Fan is turned on continually when the external heater is turned on, 3: Fan is turned off when the external heater is turned on with cooling only indoor unit *Cooling only indoor unit: To use this option, install the Mode Select switch (MCM-C200) on the outdoor unit and set it as cool mode 4: The cooling operation status is displayed. 5: Fan speed stays in the high continuously when the hot water heater is turned on.

82 Universal Communication Kit Installation Installation setting - 02 series

83 Universal Communication Kit Installation Installation setting - 05 series

84 Universal Communication Kit Installation Installation setting - 05 series 1) Height difference: The level difference between the corresponding indoor unit and the indoor unit installed at the lowest place. 2) Distance: The pipe length difference between corresponding indoor - ODU unit and the farthest indoor unit - ODU

85 Universal Communication Kit Installation Installation setting - 05 series

86 Universal Communication Kit Installation Installation setting - 05 series

87 Universal Communication Kit Installation Installation setting - 05 series Normal indoor unit To prevent cold air from being supplied into the room, fan operation will be delayed until evaporator coil is above 82.4 F. This is not applied when not using "fan on" signal to turn on the AHU fan. * Prevent cold wind 0: Disuse (prevent cold air) 1: Use (Disable cold air prevention) Avg. Evap Temp F - High 93.2 F - Mid 89.6 F - Low 82.4 F - off 84.2 F - Low 77 F - off Avg. Evap Temp Fan stops in defrost ON ON FAN OFF FAN ON FAN OFF FAN ON * Set 05 series SEG23 to turn on the fan all the time including defrost it is not required to set 05 series SEG23.

88 Universal Communication Kit Installation Installation setting - 05 series DOAS indoor unit If DOAS option is set, Prevention of cold air control criteria is different. To prevent cold air from being supplied into the room, fan operation will be delayed until evaporator coil is above 41 F. This is not applied when not using "fan on" signal to turn on the AHU fan. * Prevent cold wind 0: Disuse (prevent cold air) 1: Use (Disablecold air prevention) Avg. Evap Temp 68 F - High 53.6 F - Mid 41 F - Low off 64.4 F - Low 50 F - Low 37.4 F - Low Avg. Evap Temp Fan stops in defrost ON ON FAN OFF FAN ON FAN OFF FAN ON * Set 05 series SEG23 to turn on the fan all the time including defrost it is not required to set 05 series SEG23.

89 Installation failure case study EEV and Temperature Sensor Position Communication Cable Cross Connection EEV Installation Location EEV Insulation

90 Installation failure case study EEV and Temperature Sensor Position Case 1 Case 2 Evap-In Sensor installed Before the EEV Evap-In Sensor installed after the EEV Evap-In Sensor should be installed on a distributor pipe between the distributor and Evaporator inlet

91 Installation failure case study Communication Cable Cross Connection F1/F2 Refrigerant Piping F1/F2 Communication connections (F1-F2) are cross connected Refrigerant Piping

92 Installation failure case study EEV Installation Location AHU EEV EEV(s) should be installed inside of AHU EEV(s) are exposed possibility of damage and corrosion EEV(s) must be installed in an enclosure

93 Installation failure case study EEV Insulation Inadequate insulation Condensation forming on piping Improper insulation of the EEV Assembly and pipe may generate condensation, which may cause damage to other components inside the cabinet.