Polar Air PDWA-V-AECM Installation, Operation And Service Manual

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INSTALLATION, OPERATION
AND SERVICE MANUAL
PDWA-V/P-AECM
LOW STATIC DUCTED

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Summary of Contents for Polar Air PDWA-V-AECM

  • Page 1 INSTALLATION, OPERATION AND SERVICE MANUAL PDWA-V/P-AECM LOW STATIC DUCTED...
  • Page 2 INVESTING IN QUALITY, RELIABILITY & PERFORMANCE ISO 9001 QUALITY World Leading Design and Technology Every product is manufactured to meet Equipped with the latest air-conditioning test rooms the stringent requirements of the and manufacturing technology, we produce over internationally recognized ISO 9001 50,000 fan coil units each year, all conforming to the standard for quality assurance in design, highest international standards of quality and safety.
  • Page 3: Safety Symbols Used

    Page 1 WARNINGS DEFINITIONS: CAUTION: Risk of minor/moderate injury if precaution not taken. WARNING: Risk of death/serious injury if warning is not heeded. DANGER: Risk of death/serious injury if danger is not avoided. SAFETY SYMBOLS USED CAUTION: Important information, read the provided instructions carefully WARNING: Potential electric shock hazard WARNING: High voltage WARNING: Cut/Crush hazard...
  • Page 4 Page 2 FAN COIL SAFETY GUIDE CAUTION: Care must be taken when handling sheet metal. Please read the information in this document carefully prior to Sheet metal parts have sharp edges and could cause attempting the installation, operation and/or servicing of the injury.
  • Page 5: Table Of Contents

    Page 3 Table of Contents Technical Data ................................5 A.1. General Description ..............................5 A.2. General Specifications ..............................6 2-pipe / 4-pipe Cooling Performance ........................6 2-pipe / 4-pipe Heating Performance ........................8 Cooling/heating capacity corrections ........................9 2-pipe /4-pipe blower performance ........................10 Product Specification in Accordance with AHRI Standard 440 ................
  • Page 6 Page 4 MODEL CODE NOMENCLATURE PDWA (4R) -200 -AECM Description Notation PDWA Hydronic Ducted Fan Coil 3R: 2 pipe 3 rows 4R: 2 pipe 4 rows 6R: 2 pipe 6 rows 3R+1: 4 pipes with 3 rows cooling and 1 rows heating coil 3R+2: 4 pipes with 3 rows cooling and 2 rows heating coil 4R+2: 4 pipes with 4 rows cooling and 2 rows heating coil Unit Size:...
  • Page 7: Technical Data

    Page 5 Technical Data The Duct Fan Coil is designed to meet and exceed the demanding requirements for efficiency and quiet operation. STRUCTURE- is made from electrostatically coated steel panels complete with couplings for the connection of ducting and gravity drain condensate pan with insulation. Fire resistant insulation is fitted internally to provide both thermal and acoustic insulation.
  • Page 8: General Specifications

    Page 6 2-pipe / 4-pipe Cooling Performance PDWA(3R)-[size]-V-AECM (3-Row Coil) All Capacity are based on nominal air flow (CFM). COOLING CAPACITY (1000BTU/H) 45°F ENTERING WATER TEMPERATURE NOMINAL SIZE AIR FLOW 80°F D.B. (67°F W.B.) 75°F D.B. (63°F W.B.) PD (Ft. hd.) (CFM) 12.9 10.1...
  • Page 9 Page 7 PDWA(4R)-[size]-V-AECM (4-Row Coil) All Capacity are based on nominal air flow (CFM). COOLING CAPACITY (1000BTU/H) 45°F ENTERING WATER TEMPERATURE NOMINAL SIZE AIR FLOW 80°F D.B. (67°F W.B.) 75°F D.B. (63°F W.B.) PD (Ft. hd.) (CFM) 13.1 19.6 14.4 10.3 10.2 21.5...
  • Page 10: 2-Pipe / 4-Pipe Heating Performance

    Page 8 2-pipe / 4-pipe Heating Performance PDWA(3R)-[size]-V-AECM (3-Row Coil) HEATING CAPACITY (1000BTU/H) ENTERING WATER TEMP. NOMINAL AIR FLOW SIZE PD (Ft. hd.) (CFM) 140°F 120°F 10.7 11.5 15.4 11.4 16.2 11.9 16.8 12.1 11.0 19.3 14.2 20.1 14.6 20.7 14.9 21.9 22.6...
  • Page 11: Cooling/Heating Capacity Corrections

    Page 9 PDWA(3R+1)-[size]-P-AECM (3R for cooling+1R for heating) HEATING CAPACITY (1000BTU/H) NOMINAL AIR ENTERING WATER TEMP. SIZE PD (Ft. hd.) FLOW (CFM) 180°F 160°F 140°F 120°F 10.5 10.7 11.9 10.3 12.8 10.9 14.1 12.3 10.4 15.3 13.4 11.0 16.4 14.1 11.4 16.0 13.8...
  • Page 12: 2-Pipe /4-Pipe Blower Performance

    Page 10 2-pipe /4-pipe blower performance AIR FLOW (CFM) vs EXTERNAL STATIC PRESSURE (220V or 115V/1Ph/60Hz EC motor) Power EXTERNAL STATIC PRESSURE (in.wg) SIZE input (W) SPEED 0.15 0.25 0.30 0.45 1200 1050 1380 1250 1000 1200 1050 1250 1100 1350 1250 1000...
  • Page 13: Product Specification In Accordance With Ahri Standard 440

    Page 11 Product Specification in Accordance with AHRI Standard 440 Product range: PDWA(3R)-V-AECM 3-row coil 2-pipe with EC motor(s) PDWA(3R)-[Size]-V-AECM 1000 1200 1400 1600 Configuration 2-pipe Number Of Fan Blowers Single Twin Three Four Three Four Unit Configuration 110-120/1/60 Power Supply (V/Ph/Hz) 208-240/1/60 1045 1084...
  • Page 14 Page 12 Product range: PDWA(4R)-V-AECM 4-row coil 2-pipe with EC motor(s) PDWA(4R)-[Size]-V-AECM 1000 1200 1400 1600 Configuration 2-pipe Number Of Fan Blowers Single Twin Three Four Three Four Unit Configuration 110-120/1/60 Power Supply (V/Ph/Hz) 208-240/1/60 1123 1493 1783 Total Air Flow 1076 1325 1591...
  • Page 15 Page 13 Product range: PDWA(6R)-V-AECM 6-row coil 2-pipe with EC motor(s) PDWA(6R)-[Size]-V-AECM 1000 1200 1400 1600 Configuration 2-pipe Number Of Fan Blowers Single Twin Three Four Three Four Unit Configuration 110-120/1/60 Power Supply (V/Ph/Hz) 208-240/1/60 1278 1452 Total Air Flow 1047 1242 External Static...
  • Page 16 Page 14 Product range: PDWA(3R+1)-P-AECM 3-row cooling coil and 1-row heating coil 4-pipe with EC motor(s) PDWA(3R+1)-[Size]-P-AECM 1000 1200 1400 1600 Configuration 4-pipe Number Of Fan Blowers Single Twin Three Four Three Four Unit Configuration 110-120/1/60 Power Supply (V/Ph/Hz) 208-240/1/60 1123 1493 1783...
  • Page 17 Page 15 Product range: PDWA(3R+2)-P-AECM 3-row cooling coil and 2-row heating coil 4-pipe with EC motor(s) PDWA(3R+2)-[Size]-P-AECM 1000 1200 1400 1600 Configuration 4-pipe Number Of Fan Blowers Single Twin Three Four Three Four Unit Configuration 110-120/1/60 Power Supply (V/Ph/Hz) 208-240/1/60 1349 1562 Total Air Flow...
  • Page 18 Page 16 Product range: PDWA(4R+2)-P-AECM 4-row cooling coil and 2-row heating coil 4-pipe with EC motor(s) PDWA(4R+2)-[Size]-P-AECM 1000 1200 1400 1600 Configuration 4-pipe Number Of Fan Blowers Single Twin Three Four Three Four Unit Configuration 110-120/1/60 Power Supply (V/Ph/Hz) 208-240/1/60 1278 1452 Total Air Flow...
  • Page 19: Mca And Mop Data

    Page 17 MCA and MOP Data 115V With Electric Heater Without Electric Heater MODEL MCA (A) MOP (A) MCA (A) MOP (A) PDWA-200 12.0 1.15 PDWA-300 17.7 1.37 PDWA-400 23.5 1.80 PDWA-500 29.3 2.09 PDWA-600 29.4 2.22 PDWA-800 35.9 3.26 PDWA-1000 36.5 3.91...
  • Page 20: Sound Data

    Page 18 Model PDWA-200-AECM Speed (RPM) H(1250) M(1150) L(950) 1000 1100 1200 1300 1400 Sound Power dB(A) 60.1 58.0 52.6 44.2 47.5 51.5 53.7 56.6 59.3 60.8 63.0 20 Hz 20.2 19.4 21.0 20.5 15.2 22.7 19.3 17.3 21.5 19.0 19.2 25 Hz 17.8...
  • Page 21 Page 19 Model PDWA-400-AECM Speed (RPM) H(1150) M(1050) L(950) 1000 1100 1200 1300 1400 Sound Power dB(A) 60.4 58.3 55.9 47.5 50.9 54.5 57.3 59.3 61.4 63.6 65.3 20 Hz 18.7 18.5 18.7 17.9 19.5 14.7 22.8 14.3 23.0 22.6 22.2 25 Hz 18.1...
  • Page 22 Page 20 Model PDWA-600-AECM Speed (RPM) H(1350) M(1250) L(1100) 1000 1100 1200 1300 1400 Sound Power dB(A) 65.2 63.2 60.0 42.0 45.4 49.1 52.4 57.1 57.9 60.0 62.2 64.2 66.2 20 Hz 19.0 19.9 16.4 19.6 18.9 18.4 17.3 13.6 21.2 16.4 19.5...
  • Page 23 Page 21 Model PDWA-1000-AECM Speed (RPM) H(1300) M(1200) L(1050) 1000 1100 1200 1300 1400 Sound Power dB(A) 67.1 65.3 61.4 54.4 57.5 60.2 62.6 65.3 67.1 68.9 20 Hz 19.5 22.4 16.8 12.0 13.7 14.3 19.4 22.4 19.5 19.1 25 Hz 21.4 16.4 16.3...
  • Page 24 Page 22 Model PDWA-1400-AECM Speed (RPM) H(1350) M(1250) L(1100) 1000 1100 1200 1300 1400 Sound Power dB(A) 68.4 66.6 61.5 52.5 55.4 58.4 61.5 63.1 65.7 67.5 69.3 20 Hz 12.9 15.5 19.2 17.4 19.6 20.2 19.2 16.6 19.2 11.8 14.0 25 Hz 15.2...
  • Page 25: Coil Data

    Page 23 2-Pipe Systems (3-Row Coil) Fin height Fin Length No. of Fin width No. of Tube Ø Model Fins per Inch (inch) (inch) Rows (inch) Circuits (inch) PDWA(3R)-200 18 7/8 PDWA(3R)-300 22 7/8 PDWA(3R)-400 26 3/4 PDWA(3R)-500 30 3/4 7 7/8 PDWA(3R)-600 34 5/8...
  • Page 26: Dimensional Drawings

    Page 24 Coil water connections can be configured for either the left or right side of the fan coil unit. Electrical connections and the controller will be on the same side as water connections. For 2-pipe (3R), (4R) and 4-pipe (3R+1): Model PDWA-200 21 1/16...
  • Page 27 Page 25 For 2-pipe (6R) and 4-pipe (3R+2) and (4R+2): Model PDWA-200 21 1/16 19 1/8 19 1/8 20 1/16 29 3/4 17 1/2 φ9/16 9 13/16 8 3/8 PDWA-300 23 1/16 23 1/16 33 5/8 17 1/2 φ9/16 9 13/16 8 3/8 PDWA-400 28 15/16...
  • Page 28 Page 26 For PDWA with Electric Heater: Model PDWA-200 21 1/16 19 1/8 19 1/8 20 1/16 29 3/4 15 3/4 φ9/16 9 13/16 PDWA-300 23 1/16 23 1/16 33 11/16 15 3/4 φ9/16 9 13/16 PDWA-400 28 15/16 26 15/16 26 15/16 27 15/16 37 5/8...
  • Page 29: Installation

    Page 27 Installation When installing, performing maintenance or servicing Polar Air fan coil units observe the • precautions stated in this manual as well as those stated on the labels attached to the unit. Ensure all local and national safety codes, laws, regulations, as well as general electrical and •...
  • Page 30: Location

    Page 28 Before installing and running the unit, please check the following: Confirm there is enough space for unit installation and maintenance. Please refer to below figure for the unit's outlines and dimensions and for the minimum distance between the unit and the obstacle/ any obstructions/ its surroundings. Please ensure enough space for piping connections and electrical wiring.
  • Page 31 Page 29 CAUTION Make sure the top of the unit is level after installation. The drain pan is designed with a slight gradient to facilitate drainage. CAUTIONS Dimension M and N are determined by air duct design. Circulatory air pressure drop should be approximately equal to the External Static Pressure. PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 32: Insulation

    Page 30 1. The insulation design and materials should be complying with local and national codes and regulations. 2. Chilled water pipes and all parts on the pipes should be insulated. 3. It is also necessary to insulate the air duct. 1.
  • Page 33: Maintenance

    Page 31 Maintenance Installation and maintenance should be performed by qualified personnel who are familiar with local codes and regulations, and are also experienced with this type of appliance. Confirm that the unit has been switched OFF before installing or servicing the unit. A good general maintenance plan will prevent damage to and unexpected shutting down of the equipment.
  • Page 34: Coil Direction Interchange

    Page 32 Remove 4 screws to remove the drain pan. Remove 6 screws on both sides to remove drain guide. Remove 4 screws on both sides of coil mounting brackets. The complete coil assembly can be taken out easily. If the coil direction is exchanged on site, water inlet and water outlet need to be exchanged too.
  • Page 35: Control Specifications: Intelligent Control (I Type)

    Page 33 Control Specifications: Intelligent Control (I TYPE) Code Description Return air sensor Return air temperature (Tr) Analogue 2-pipe coil circuit sensor Water inlet temperature sensor (Ti1) Input Hot water Sensor Water outlet temperature sensor (Ti2) LED display / IR receiver X-DIS 1 Digital communication port to LED display/IR receiver board.
  • Page 36: Wiring Diagram

    Page 34 PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 37 Page 35 PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 38: Cool Mode

    Page 36 For 2-Pipe system with Valve Configuration (300046=0) COOL MODE When unit is turned on in cooling mode. a) If Tr ≥ Ts + 1.8 °F (Modbus 300033 setting), MTV1 is turned on. AUX1 is closed. Fan is turned on at setting speed. DA2 is turned on at 10VDC for 2 minutes, then check Ti1, When Ti1<=46.4 °F, DA2 output is based on water temperature difference (Ti1/Ti2) and Modbus parameter 300027 setting PID calculation.
  • Page 39: Dehumidification Mode

    Page 37 With Electrical Heater as primary heat source (300047=2) When unit is turned on in heating mode: When Ti2 ≤ 95 ºF (or Ti2 is broken) and Tr ≤ Ts – 1.8 ºF (Modbus 300033 setting), Fan is turned on at setting speed, EH is turned on. When Tr > Ts + 1.8 ºF (Modbus 300033 setting), EH is turned off. Fan is turned on at low speed.
  • Page 40 Page 38 OVER-HEAT PROTECTION OF COIL If Ti2 ≥ 167 ºF, then MTV2, AUX2, DA2 and EH are turned off. Indoor fan remains on and runs at high speed. If Ti2< 158 ºF, then unit keep original state. If the indoor coil temperature sensor is damaged or not connected, then the protection mode will be overridden and the unit will work according to the pre-heat and post-heat program.
  • Page 41 Page 39 If Ti1 ≥ 82.4 ºF (Modbus 300017 setting)+ 7.2 ºF, fan is on at setting speed; DA2 output is based on water temperature difference (Ti1/Ti2) and Modbus parameter 300028 setting PID calculation. The output is 6~10VDC; If Ti1 sensor is damaged, fan is worked at setting speed. b) When Tr >...
  • Page 42 Page 40 DRAIN PUMP (IF INSTALLED) Drain pump is turned ON if the unit is turned on in cooling or dehumidification mode. It remains on for 5 minutes after unit is turned OFF. During mode change from cooling or dehumidification to heating or fan mode, the pump will be turned off after 5 minutes. If the system is turned off at the circuit breaker (or main power supply), the drain pump function is off.
  • Page 43: Open Modbus Protocol

    Page 41 Transfer Mode: RTU BAUD Rate:9600bps, 8 data bit, 1 stop bit, None parity bit The communications require a delay between reading an answer and sending the next command of 80 ms. All temperature is equal to reading data*10 accuracy: 0.2 ºF. Supported Functions Function Code Function description...
  • Page 44 Page 42 Holding Register table: Description Address Type* Remark Cooling mode = 01(H) Humidify mode = 02(H) Mode setting 300000 Fan mode = 04(H) Heating mode = 08(H) Auto mode = 10(H) Low speed = 04(H) Medium speed = 02(H) Fan speed setting 300001 High speed = 01(H)
  • Page 45 Page 43 Temperature band setting 300033 Reserved 300034 Reserved 300035 Reserved 300036 Reserved 300037 Reserved 300038 Reserved 300039 Reserved 300040 Reserved 300041 Reserved 300042 Reserved 300043 Reserved 300044 Reserved 300045 0=2-pipe+MTV 1=2-pipe without valve Software type 300046 2=4-pipe+std valve 3=4-pipe+6-way valve EH type 300047 0=without EH, 1=EH as booster;...
  • Page 46 Page 44 Input Register table: Description Address Type* Remark Tr temperature sensor 400000 Ti1 temperature sensor 400001 Ti2 temperature sensor 400002 Reserved 400003 Reserved 400004 Bit0 = Room temperature sensor error Bit1 = Ti1 temperature sensor error Bit2 = Ti2 temperature sensor error Bit3 = Float switch error Bit4 = Indoor coil low temperature protection Bit5 = Indoor coil over-heat protection...
  • Page 47: Modbus Network Setup For Fcu Group

    Page 45 Network Setup 1. Disconnect the communication plug from the control box 2. Communication plug A, B, A, B is printed on the main PCB. When you connect the wires, please ensure connection of A to A and B to B. 3.
  • Page 48 Page 46 3.3. Wire connection check After the wire connection is completed, please check that the wire colours correspond. 3.3.1. Check the wire contact by using a multimeter. 3.3.2. contact contact contact contact contact contact Check 1 and 2, 3 and 4, 5 and 6 to be sure connections are correct. 3.3.3.
  • Page 49: Led Display And Error Description

    Page 47 LED receiver in ABS housing with 19 5/8” or 70 7/8” pre-wiring (Optional) Intelligent control PCB – I Type Control Fan speed setting LED indication Condition High speed Red LED On Normal Medial speed Yellow LED On Normal Low speed Green LED On Normal...
  • Page 50: Control Specifications: Flexible Function Pcb (W Type)

    Page 48 Control Specifications: Flexible Function PCB (W TYPE) Used in all PDWA- [V/P] W3 unit configurations. Condensate management with valve protection and NC alarm contact. • Integrated fan relays for zone control applications. • • ON/OFF thermostat input and low-voltage modulating fan speed input flexibility. Simple error diagnostic and LED error display (optional).
  • Page 51: Wiring Diagram

    Page 49 PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 52 Page 50 PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 53 Page 51 PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 54: Control Logic Specification For Ec-W3

    Page 52 Unit Power ON/OFF The unit is turned ON when any of the fan speed inputs (H/M/L) are ON, or modulating signal input is more than 2.0VDC or Motor RPM writing (MS30006) is above 200RPM. The unit is turned OFF only if all of the fan speed inputs (H/M/L) are OFF and modulating signal input is less than 2.0VDC and Motor RPM writing (MS30006) is 0;...
  • Page 55: Modbus Protocol

    Page 53 Transfer Model:RTU BAUD Rate:9600bps, 8 data bit, 1 stop bit, None parity bit The communications require a delay between reading an answer and sending the next command of 80ms. Holding Register table: Description Address Type* Remark Motor1 minimum RPM 30000 200~1500rpm700 (CN4 Port)
  • Page 56: Led Indication And Error Description

    Page 54 LED receiver in ABS housing with 19 5/8” or 70 7/8” pre-wiring (Optional) Flexible Function PCB Fan speed setting LED indication Condition High speed Red LED On Normal Medial speed Yellow LED On Normal Low speed Green LED On Normal For all units - Green LED blinks Item...
  • Page 57: User Interface

    Page 55 User Interface Interchange F and C on Display Press up and down buttons for 3 seconds, then release. Louver - It is not available. Swing – It is not available. Attention When unit with handset is master, settings are automatically sent to slaves;...
  • Page 58: Wired Wall Pad Controller For I-Control

    Page 56 LED display Code Legend Code Legend Code Legend Monday Heating Mode Fahrenheit degree Tuesday Ventilation Mode Celsius degree Wednesday Auto Mode Thursday Sleep mode 0-Auto; 1-Low;2-Medium; 3-High Friday Swing mode Unit address Saturday LED lock Unit No. / Error code Sunday Setting Temperature Weekly timer...
  • Page 59: Operation Guide

    Page 57 Operation guide On/OFF Press to turn on; press it again to turn off. Button Mode With wall pad on, press to select Cooling, Dehumidification, Heating, Ventilation or Auto button sequentially. Fan Speed Button Press , S30 is recycled from 0 to3;0_Auto speed, 1_Low speed; 2_Medium speed; 3_High speed.
  • Page 60 Page 58 S31/S32 displays “U005”, which is used to set setting temperature band. 1~9°C. S31/S32 displays “U006-U009”, which are reserved to set parameters with optional accessory to measure PM2.5 and CO2 values. S31/S32 is display” U010-U011”, which are reserved. S31/S32 is display” U012”, which is used to set setting RH point. 30-70, default: 50.
  • Page 61 Page 59 Error code S32: E** blinks Bit0 = Room temperature sensor error Bit1 = Ti1 temperature sensor error Bit2 = Ti2 temperature sensor error Bit3 = Float switch error Bit4 = Indoor coil low temperature protection Bit5 = Indoor coil over-heat protection Bit6 =Filter switch Bit7 = Electrical heater failure Bit8 = Motor1 Error...
  • Page 62: Error Code List

    Page 60 Error Code List Error Description Code Reason Remedy 1. Check if Tr plug is connected or not. Room sensor unplugged or Room temperature sensor error damaged. 2. Check if sensor’s resistance is correct or not. 1. Check if Ti1 plug is connected or not. Ti1 sensor unplugged or Indoor coil sensor 1 failure damaged.
  • Page 63: Dimensions And Installation

    Page 61 Dimensions and installation 1. Remove the screw on the bottom and 2. Fix the back panel to wall and then remove the back connection panel. connect the Display on the back panel. PG2024 NA_PDWA-V/P-AECM-003d...
  • Page 64: Sensor Resistance R-T Conversion Table

    Page 62 Sensor Resistance R-T Conversion Table Resistance: R (77°F) = 10KΩ ± 1% Beta Constant: B (77/185) = 3977 ± 1% ( °F ) (KΩ) (KΩ) (KΩ) ( °F ) (KΩ) (KΩ) (KΩ) 182.7 191.8 39.2 26.11 26.9 27.71 -20.2 163.4 171.5...
  • Page 65: Troubleshooting

    Page 63 Resistance : R (77°F) = 10KΩ ± 1% Beta Constant : B (77/185) = 3977 ± 1% ( °F ) (KΩ) (KΩ) (KΩ) ( °F ) (KΩ) (KΩ) (KΩ) 100.4 5.614 5.759 5.907 1.417 1.474 1.532 102.2 5.387 5.53 5.673 168.8...
  • Page 66 NORTH AMERICA EUROPE HONG KONG 991 Providence High C/ Rio Jucar, Nave 6. Pl El Saladar Office 6, 9th Floor, Block A, 6 on Ping Street Norwood, MA, 02065, USA Lorqui, Murcia, Spain, 30564 New Trade Plaza, Shatin, Hong Kong, T +1 800 326 9105 T (+34) 968 046 262 T (852) 2648-8887...

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