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Polar Air PFWB-V-AECM Series Installation, Operation And Service Manual

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INSTALLATION, OPERATION
AND SERVICE MANUAL
PFWB(C)-V/P-AECM
UNIVERSAL FLOORSTANDING

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Summary of Contents for Polar Air PFWB-V-AECM Series

  • Page 1 INSTALLATION, OPERATION AND SERVICE MANUAL PFWB(C)-V/P-AECM UNIVERSAL FLOORSTANDING...
  • 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, our factories in China internationally recognized ISO 9001 produce over 50,000 fan coil units each year, all standard for quality assurance in design, conforming to the highest international standards of...
  • Page 3 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 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

    Table of Contents Technical Data ................................5 General Description ..............................5 General Specifications ..............................6 2-Pipe Systems ..............................6 4-Pipe Systems ..............................8 MCA and MOP Data .............................. 9 Coil Data ..................................10 Sound Data ................................11 Dimensional Drawings ............................... 16 Installation .................................
  • Page 6 MODEL CODE NOMENCLATURE PFWB -AECM Description Notation PFWB Universal Uncased Unit Unit Size: (06 /09 / 12 / 15 / 18 / 24 / 30 / 36 / 40) (See General Specification Section A for cooling and heating capacities.) P: Chilled/Hot Water, 4-Pipe V: Chilled/Hot Water, 2-Pipe X: 208-240V EC motor Y: 110-120V EC motor...

  • Page 7: Technical Data

    Technical Data General Description The Universal Fan Coil is designed to meet and exceed the demanding requirements for efficiency and quiet operation. STRUCTURE- The bearing structure is made of galvanized sheet-steel with holes for attaching the structure to the wall/ceiling. The “V”...

  • Page 8: General Specifications

    General Specifications 2-Pipe Systems Product range: PFWB-3R-V-AECM Universal Uncased 3-row coil 2-pipe with EC motor(s) PFWBC-3R-V-AECM Universal Cabinet 3-row coil 2-pipe with EC motor(s) PFWB(C)-3R-[Size]-V-AECM Configuration 2-pipe Number of Fan Blowers Single Twin Four Unit Configuration 208-240/1/60 Power Supply (V/Ph/ Hz) 110-120/1/60 1138 1296...
  • Page 9 Product range: PFWB-4R-V-AECM Universal Uncased 4-row coil 2-pipe with EC motor(s) PFWBC-4R-V-AECM Universal Cabinet 4-row coil 2-pipe with EC motor(s) PFWB(C)-4R-[Size]-V-AECM Configuration 2-pipe Number of Fan Blowers Single Twin Four Unit Configuration 208-240/1/60 Power Supply (V/Ph/ Hz) 110-120/1/60 1138 1296 Air Flow 1006 1196...

  • Page 10: 4-Pipe Systems

    4-Pipe Systems Product range: PFWB-3R+1-P-AECM Universal Uncased Unit 3-row cooling coil and 1-row heating coil 4-pipe with EC motor(s) PFWBC-3R+1-P-AECM Universal Cabinet Unit 3-row cooling coil and 1-row heating coil 4-pipe with EC motor(s) PFWB(C)-3R+1-[Size]-P-AECM Configuration 4-pipe Number of Fan Blowers Single Twin Four...

  • Page 11: Mca And Mop Data

    MCA and MOP Data 115V With Electric Heater Without Electric Heater MODEL MCA (A) MOP (A) MCA (A) MOP (A) 0.37 PFWBC-06 0.57 PFWBC-09 11.7 0.83 PFWBC-12 11.8 0.96 PFWBC-15 12.0 1.13 PFWBC-18 18.2 1.89 PFWBC-24 18.5 2.17 PFWBC-30 PFWBC-36 19.1 2.78 PFWBC-40...

  • Page 12: Coil Data

    Coil Data 2-Pipe Systems (3-Row Coil) Fins per No. of No. of Model Fin height Fin Length Fin width Tube Ø Inch Rows Circuits PFWB(C)-06 17-3/8 PFWB(C)-09 19-5/16 PFWB(C)-12 24-1/4 PFWB(C)-15 31-1/8 PFWB(C)-18 7-7/8 33-1/8 12.7 2-5/8 PFWB(C)-24 51-5/8 PFWB(C)-30 51-5/8 PFWB(C)-36 57-9/16...

  • Page 13: Sound Data

    Sound Data Model PFWBC-06-AECM Speed (RPM) H (800) M (690) L (530) 1000 1100 1200 1300 1400 Sound Power dB(A) 50.6 45.9 38.5 46.5 50.5 53.5 56.4 59.2 61.2 63.3 65.1 20 Hz 12.2 17.6 18.6 20.6 17.4 18.3 14.0 21.6 15.0 19.7...
  • Page 14 NC Level Model PFWBC-12-AECM Speed (RPM) H (1000) M (800) L (500) 1000 1100 1200 1300 1400 Sound Power dB(A) 55.8 49.3 37.0 37.0 41.6 45.9 49.3 53.0 55.8 58.6 60.8 63.3 64.9 20 Hz 17.6 25.9 17.8 17.8 19.1 20.2 25.9 21.4...
  • Page 15 Model PFWBC-18-AECM Speed (RPM) H (1150) M (950) L (800) 1000 1100 1200 1300 1400 Sound Power dB(A) 60.0 54.8 50.1 39.0 41.8 46.1 50.1 53.6 56.0 58.8 61.2 63.2 65.1 20 Hz 20.5 20.5 17.6 18.9 21.1 15.5 17.6 24.1 16.9 15.5...
  • Page 16 Model PFWBC-30-AECM Speed (RPM) H (1250) M (1100) L (950) 1000 1100 1200 1300 1400 Sound Power dB(A) 62.5 58.9 55.0 36.2 41.7 46.1 50.0 53.6 56.3 58.9 61.4 63.6 65.7 20 Hz 20.8 15.2 18.6 13.4 21.3 15.5 19.4 19.0 18.1 15.2...
  • Page 17 Model PFWBC-40-ECM Speed (RPM) H (1300) M (1150) L (950) 1000 1100 1200 1300 1400 Sound Power dB(A) 66.1 62.7 57.4 34.7 36.2 41.8 44.3 49.2 52.8 55.9 58.9 61.5 63.9 66.1 67.7 20 Hz 16.6 19.0 16.7 16.4 11.9 17.2 19.0 20.0...

  • Page 18: Dimensional Drawings

    Dimensional Drawings Dimensional Drawings: PFWB series Model PFWB-06 22-3/4 23-15/16 10-5/8 9-1/16 8-3/4 18-1/8 2-1/4 5-1/4 2-1/16 4-7/16 4 1/8 PFWB-09 24-3/4 25-15/16 10-5/8 9-1/16 8-3/4 18-1/8 2-1/4 5-1/4 2-1/16 4-7/16 4 1/8 PFWB-12 30-5/8 31-13/16 10-5/8 9-1/16 8-3/4 18-1/8 2-1/4 5-1/4 2-1/16...
  • Page 19 Dimensional Drawings: PFWBC series PFWBC WITH HORIZONTAL AIR RETURN PFWBC-06 PFWBC-09 PFWBC-12 PFWBC-15 PFWBC-18 PFWBC-24 PFWBC-30 PFWBC-36 PFWBC-40 Model 33 3/4 35 3/4 41 5/8 47 1/2 49 1/2 69 1/4 69 1/4 75 1/8 23 7/8 25 7/8 31 3/4 37 3/4 39 5/8 59 3/8...
  • Page 20 PFWBC WITH VERTICAL AIR RETURN PFWBC-06 PFWBC-09 PFWBC-12 PFWBC-15 PFWBC-18 PFWBC-24 PFWBC-30 PFWBC-36 PFWBC-40 Model 33 3/4 35 3/4 41 5/8 47 1/2 49 1/2 69 1/4 69 1/4 75 1/8 23 7/8 25 7/8 31 3/4 37 3/4 39 5/8 59 3/8 59 3/8 65 1/4...

  • Page 21: Installation

    1/4" 3M Merv8 for for PFWBC-VAR Installation Safety Precautions 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.

  • Page 22: Installation And Location

    Installation and Location The unit location should be established by the installation designer, services engineer or by a technically competent person before installation. It should consider technical requirements as well as the relevant current laws and regulations. The fan coil should be installed by a qualified company, also in accordance with the relevant laws and regulations of the country of installation.

  • Page 23: Piping Connections

    Piping Connections The fan coils have been designed and made for installation in heating and air-conditioning systems. The characteristics of the water fittings are given below: Main pipes connection The position of the water fittings may be reversed from left to right during installation. Installation diagram of water connections 1.

  • Page 24: Coil Direction Interchange

    Coil Direction Interchange Step 1: Remove the front cabinet. Step 2: Remove 2 screws on the coil’s metal plate. Step 3: Remove 8 screws from both sides of the coil, then take out coil. Step 2 Step 3 Step 4: Change the coil direction and screw back into the casing. Replace the front cabinet. CAUTION: Care must be taken when handling sheet metal.

  • Page 25: Electrical Connection

    Electrical Connection Wiring connection must be done according to the wiring diagram on the unit. The unit must be GROUNDED well. An appropriate strain relief device must be used to attach the power wires to the terminal box. A 13/16” hole is designed on the terminal box for field installation of the strain relief device. Field wiring must be complied with the national security regulations.
  • Page 26 Vertical type Piping for 2-Pipe System 3-Way 4 Outlet Valve 3/4” Vertical Drain Pan Water Outlet 3/4” Water Inlet 3/4” Piping for 4-Pipe System 3-Way 4 Outlet Valve 1/2” for Heating Coil 3-Way 4 Outlet Valve 3/4” for Cooling Coil Vertical Drain Pan Hot Water Outlet 1/2”...

  • Page 27: Maintenance

    Maintenance General Maintenance 1. Installation and maintenance should be performed by qualified personnel who are familiar with local codes and regulations, and are experienced with this type of appliance. 2. Confirm the unit has been switched OFF before installing or service. 3.

  • Page 28: Cabinet Removal

    Cabinet Removal Step 1: Open the top cover 1 and 2 as shown below. Step 2: Loosen eight 8 screws inside. Step 3: Remove the cabinet. 8 Screws Top cover 2 Top cover 1 Fan Motor Assembly Maintenance Step 1: Remove the front cabinet. Step 2: Loosen 6 screws on both sides of the fan deck, then remove.

  • Page 29: Control Specifications: Intelligent Control (I Type)

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

  • Page 30: Wiring Diagram

    Wiring Diagram Page 28...
  • Page 31 Page 29...

  • Page 32: Control Logic For I Control For Ec-S1 (300029=1)

    Control Logic for I Control for EC-S1 (300029=1) 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 33 OVER-HEAT PROTECTION OF COIL If Ti1 ≥ 167 ºF, then MTV1, AUX2, DA2 and EH are turned off. Indoor fan remains on and runs at high speed. If Ti1 < 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 34 DEHUMIDIFICATION MODE When unit is turned on in dehumidification mode: AUX1 is turned on. Ts is 75.2 ºF. If Tr ≥ 77 ºF for 30S, then MTV1 will be ON for 3 minutes, and then OFF for 4 minutes. DA2 is on at 3 times of (Modbus 300015 setting).
  • Page 35 OVER-HEAT PROTECTION OF INDOOR COIL If Ti1 ≥ 167 ºF, then MTV1, AUX2, DA2 and EH are turned off. Indoor fan remains on and runs at high speed. If Ti1 < 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 36 FLOAT SWITCH (IF INSTALLED) If the float switch (N/C) is opened before the unit is turned on and if running at COOL mode, then MTV1 is turned off. The drain pump will be turned on and indoor fan will keep running. After float switch is closed, MTV1 is turned on. If the unit is turned on in COOL mode and the float switch is opened continuously ≥...

  • Page 37: Open Modbus Protocol

    Open Modbus protocol 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 38 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) Auto fan speed = 07(H)
  • Page 39 Cooling=75.2 ºF Heating=69.8 ºF 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...
  • Page 40 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 41: Modbus Network Setup For Fcu Group

    Modbus Network Setup for FCU group 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 42 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 43: Led Display And Error Description

    LED Display and Error Description 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...

  • Page 44: Control Specifications: Flexible Function Pcb (W Type)

    Control Specifications: Flexible Function PCB (W TYPE) Features a) Condensate management with valve protection and NC alarm contact. b) Integrated fan relays for zone control applications. ON/OFF thermostat input and low-voltage modulating fan speed input flexibility. d) Simple error diagnostic and LED error display. I/O Port Definitions Code Descriptions...

  • Page 45: Wiring Diagrams

    Wiring Diagrams Page 43...
  • Page 46 Page 44...

  • Page 47: Control Logics Specification For Ec-W1

    Control Logics Specification for EC-W1 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 48: Modbus Protocol

    Modbus Protocol 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 80ms. Holding Register table Description Address Type* Remark Motor1 minimum RPM 30000 200~1500rpm700 (CN4 Port)

  • Page 49: Led Display And Error Description

    LED Display and Error Description 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...

  • Page 50: User Interface

    User Interface Remote Handset for I Type Control 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 51: Wired Wall Pad Controller For I-Control

    Wired Wall Pad Controller for I-Control 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.

  • Page 52: Operation Guide

    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 53 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 54 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 55: Error Code List

    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 56: Dimensions And Installation

    Dimensions and installation 1. Remove the screw on the bottom and remove the 2. Fix the back panel to wall and then connect the back connection panel. Display on the back panel. Page 54...

  • Page 57: Resistance R-T Conversion Table

    Resistance R-T Conversion Table Resistance: R (77°F) = 10KΩ ± 1% Beta Constant: B (25/85) = 3977 ± 1% Rmin Rnom Rmax Rmin Rnom Rmax (°F) (KΩ) (KΩ) (KΩ) (°F) (KΩ) (KΩ) (KΩ) 182.7 191.8 39.2 26.11 26.9 27.71 -20.2 163.4 171.5 179.9...

  • Page 58: Troubleshooting

    Resistance: R (77°F) = 10KΩ ± 1% Beta Constant: B (25/85) = 3977 ± 1% Rmin Rnom Rmax Rmin Rnom Rmax (°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 1.37 1.426...

  • Page 59: Accessories

    Accessories Heating Coil Electrical Heater The electric heater module is supplied for winter heating as an alternative to the auxiliary hot water coil. Electric Heater is installed in the same way and same position as the Auxiliary 1 row heating coil for 4-pipe system. Note: For correct operation of the heaters, airflow should not drop below the values for minimum speed.

  • Page 60: Auxiliary External Drain Pan

    Auxiliary External Drain Pan ABS external drain pan for PFWB(C) floor External painted steel drain pan for PFWB(C) horizontal standing /fixed installation. installation with right-sided coil connections. External painted steel drain pan for PFWB(C) horizontal installation with left-sided coil connections. ABS Supporting Feet ABS supporting feet for floor standing application.
  • Page 61 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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