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MDL Solutions PCG SERIES Installation, Operation And Service Manual

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INSTALLATION OPERATION AND SERVICE MANUAL
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SUPERIOR SERIES
(AMERICAS VERSION)
PCG(H)-V/P~AECM SERIES
V ~ 2 pipe
P ~ 4 pipe
SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

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  • Page 1 SUPERIOR SERIES INSTALLATION OPERATION AND SERVICE MANUAL (AMERICAS VERSION) PCG(H)-V/P~AECM SERIES V ~ 2 pipe P ~ 4 pipe SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 2 Page 2 of 98 INVESTING IN QUALITY, RELIABILITY & PERFORMANCE. ISO 9001 QUALITY World Leading Design and Technology Every product is manufactured to meet Equipped with the latest CAD/CAM computer aided the stringent requirements of the design and manufacturing technology, our factories internationally recognized ISO 9001 in China and Thailand produce over 2,000,000 air standard for quality assurance in...

  • Page 3: Table Of Contents

    Page 3 of 98 Table of Content TECHNICAL DATA ..........................6 A.1..........................6 ENERAL PECIFICATION A.1.1. 2-Pipe Systems ..........................6 A.1.2. 4-Pipe Systems ..........................8 A.2..............................9 A.2.1. 2-Pipe Systems ..........................9 A.2.2. 4-Pipe Systems ..........................9 A.3.......................... 10 IMENSIONAL RAWINGS A.4.
  • Page 4 Page 4 of 98 C.9............................62 WING OUVER C.10..............................63 UZZER C.11............................63 ESTART C.12....................... 63 WITCH RONT ANEL C.13............................63 RAIN C.14............................64 LOAT WITCH C.15....................... 64 LECTRIC EATER AFETY WITCH C.16. LED I ....................
  • Page 5 Page 5 of 98 Model Code Nomenclature - 04 - V - S - AECM EC motor configuration AECM for Americas Complete function integrated control, compatible with IR handset controller, wired wall-pad, serial networking for master-slave and MODBUS BMS functionality Flexible function control for external thermostat applications with control of drain pump,...

  • Page 6: Technical Data

    Page 6 of 98 A. Technical Data General Specification A.1. A.1.1. 2-Pipe Systems Product range: PCG(H) -AECM Flexi Hydronic Cassette with EC Motor PCG(H)-V~-AECM Hydronic Cassette 2-pipe with EC Motor (Americas Version) PCG(H)-[Size]-V~-AECM PCG-04R PCG-08 PCG-08R PCG-09 Configuration 2-pipe Number Of Fan Blowers Single Twin 115/1/60...
  • Page 7 Page 7 of 98 Product range: PCG(H) -AECM Flexi Hydronic Cassette with EC Motor PCG(H)-V~-AECM Hydronic Cassette 2-pipe with EC Motor (Americas Version) PCG(H)-[Size]-V~-AECM PCG-16 PCH-12 PCH-20 Configuration 2-pipe Number Of Fan Blowers Twin Single 115/1/60 Power Supply (V/Ph/Hz) 220/1/60 ~S: Complete function onboard PCB with integrated group control functionality, incl.

  • Page 8: 4-Pipe Systems

    Page 8 of 98 A.1.2. 4-Pipe Systems Product range: PCG(H) -AECM Flexi Hydronic Cassette with EC Motor PCG(H)-P~-AECM Hydronic Cassette 4-pipe with EC Motor (Americas Version) PCG(H)-[Size]-P~-AECM PCG-08 PCG-09 PCG-16 PCH-12 PCH-20 Configuration 4-pipe Number Of Fan Blowers Single Twin Single 115/1/60 Power Supply...

  • Page 9: Coil Data

    Page 9 of 98 Coil Data A.2. A.2.1. 2-Pipe Systems Tube Fin Length (inch) Fin Height No. of Model Fins / inch No. of rows Diameter (inch) circuits Inner Outer (inch) PCG-04R-V 47.1 51.1 3/8” PCG-08-V 47.1 51.1 3/8” PCG-08R-V 47.1 51.1 0.276”...

  • Page 10: Dimensional Drawings

    Page 10 of 98 Dimensional Drawings A.3. Dimensional Drawings: PCG-04R-V (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 11 Page 11 of 98 Dimensional Drawings: PCG-08/08R-V (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 12 Page 12 of 98 Dimensional Drawings: PCG-09-V (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 13 Page 13 of 98 Dimensional Drawings: PCG-16-V (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 14 Page 14 of 98 Dimensional Drawings: PCH-12-V (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 15 Page 15 of 98 Dimensional Drawings: PCH-20-V (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 16 Page 16 of 98 Dimensional Drawings: PCG-08-P (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 17 Page 17 of 98 Dimensional Drawings: PCG-09-P (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 18 Page 18 of 98 Dimensional Drawings: PCG-16-P (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 19 Page 19 of 98 Dimensional Drawings: PCH-12-P 5.55 (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 20 Page 20 of 98 Dimensional Drawings: PCH-20-P 32.68 (All dimensions in inch.) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 21: Valve Information

    Page 21 of 98 A.4. Valve Information A.4.1. 2-Way Valve Body Valve Dimensions (inch) (G3/4”) A.4.2. 3-Way Valve Body Valve Dimensions (inch) (G3/4”) Differential Pressure Chart DN 3/4” SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 22: Safety Precautions

    Page 22 of 98 B. Safety Precautions  When installing or performing maintenance or servicing the air conditioning equipment, observe the precautions stated in this manual, in addition to those stated in the labels attached around the unit.  Ensure all local and national safety codes, laws, regulations, as well as general electrical and mechanical safety guidelines are followed for installation, maintenance and service.

  • Page 23: Installation

    Page 23 of 98 B.1. Installation First check the contents of the package. B.1.1. Standard Configurations and Accessories There are three types of plug-and-play control box:  SKUSA-NCGH-001-AECM plug-and-play control box: PCG(H)-(V/P)S configuration – complete function integrated controller, compatible with IR handset controller, wired wall-pad, serial networking for master-slave and MODBUS applications.

  • Page 24: Operating Limits

    Page 24 of 98 B.1.2. Operating Limits Power supplies Volt Phase Remark 208~240 PCG/PCH-~X-AECM 110~120 PCG/PCH-~Y-AECM Water circuit Minimum entering water temperature +2 °C (35.6°F) Maximum entering water temperature +80 °C (176°C) Water side maximum pressure 1400 kPa (142 m.w.c) B.1.3.

  • Page 25: Installation Location

    Page 25 of 98 B.1.4. Installation Location  Do not install the unit in rooms where flammable gas or alkaline acid substances are present. Aluminum/copper coils and/or internal plastic components can be damaged irreparably.  Do not install in workshops or kitchens; drawn in oil vapors might deposit on the coils and alter their performance or damage the internal plastic parts of the unit.

  • Page 26: Installation And False Ceiling Clearance

    Page 26 of 98 B.1.5. Installation and False Ceiling Clearance  Surrounding area must have sufficient strength to carry the weight of the unit.  The inlet and outlet grilles must not be obstructed and the conditioned air should be able to blow all over the room.

  • Page 27: Pipe Works

    Page 27 of 98 B.1.6. Pipe Works Indoor Unit  The unit is fitted with a condensate pump with a 20 inch. lift.  The unit is provided with 1 inch drainage head made of ABS.  Before connecting polyvinyl tube with an inner diameter of 1 inch, check if the drainage head is in good condition.
  • Page 28 Page 28 of 98  Valve installations: See drawings of external valve installation below, by model type. 2-pipe systems: Figure 5 4-pipe systems: Figure 6 SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 29: External Drain Pan

    Page 29 of 98 B.1.9. External Drain Pan Procedures: 1. Align the two screw holes in the fixing plate to the two holes in the external drain pan. (Figure 7) 2. Make sure the drain pan is horizontal. 3. Tighten the two screws while making sure the external drain pan is installed evenly against the fixing plate.
  • Page 30 Page 30 of 98 Figure 9 Figure 10 Figure 11 (All dimensions shown in inch) Figure 12 Figure 13 SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 31 Page 31 of 98 Figure 14 - Fresh Air Flange dimension (All dimensions shown in inch) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 32: Branch Duct Connection

    Page 32 of 98 B.1.11. Branch Duct Connection  The side opening allows separate ductwork to be installed for branch ducting. (Figure 15 and Figure 16).  Cut and remove anti-condensate insulating material.  Install your flanges and conduits to casing. Conduit can be flexible polyester with spring core or corrugated aluminum externally coated (dia.

  • Page 33: Branch Duct Installation Procedure

    Page 33 of 98 B.1.12. Branch Duct Installation Procedure 1. Look for the yellow sticker on the casing for the location of branch duct or fresh air intake connections. 2. The sticker is at the center of a knock out hole underneath the casing insulation. Use a cutter and follow along the pre-cut circular marking as shown and trim off the insulation.

  • Page 34: Suspension Bolts Layout And False Ceiling Opening

    Page 34 of 98 B.2. Suspension Bolts Layout and False Ceiling Opening Using the installation template, open the ceiling panels and install the suspension bolts as in the images below. PCG-04R/08/08R~ 23.6 x 23.6 inch: Dimensions for opening 24.5 x 11 inch: Suspension Bolts PCG-09/16~ 23.6 x 45.7inch: Dimensions for opening 29.5 x 24.9 inch: Suspension Bolts...
  • Page 35 Page 35 of 98 PCH-12~ 29.5 × 29.5 inch: Dimensions for opening 13.6 × 30 inch: Suspension Bolts PCH-20~ 33.5 × 33.5 inch: Dimensions for opening 19.1 × 34 inch: Suspension Bolts SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 36: Suspension Structure

    Page 36 of 98 B.2.1. Suspension Structure  Mark the position of the suspension rods, water lines, _ condensate drain pipe, power supply cables and remote control cable.  Supporting rods can be fixed, depending on the type of ceiling, as shown in Figure 18 and Figure 19. ...

  • Page 37: Installation Procedure

    Page 37 of 98 B.2.2. Installation Procedure 1. Lift unit (without the air panel) with care by its four corners only. Do not lift unit by the condensate drain discharge pipe or by the piping connections. 2. Incline the unit (Figure 21, Figure 22, Figure 24 and Figure 25) and insert it into the false ceiling. Insert the rods into the bracket slot.
  • Page 38 Page 38 of 98 Figure 23 Clearance between the unit and false ceiling for models with single fan MODEL All single fan models Clearance 0.1 inch Figure 24 SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 39 Page 39 of 98 Figure 25 Figure 26 Clearance between the unit and false ceiling for models with twin fan MODEL All twin fan models 0.1 inch Clearance SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 40: Interconnecting Wiring

    Page 40 of 98 Interconnecting Wiring B.3.  We recommend that screened cable be used in electrically noisy areas.  Always separate low voltage (5VDC) signal wires from power line (230 VAC).  Do not install the unit where electromagnetic waves are directly emitted towards the infra red receiver on the unit.

  • Page 41: Mounting Front Panel Assembly

    Page 41 of 98 B.3.2. Mounting Front Panel Assembly 1. Remove return grille from the front panel. 2. Move the front panel to the unit casing. 3. Tighten 4 screws to attach the front panel as shown in Figure 28 and Figure 29. Figure 28 Figure 29 B.3.3.

  • Page 42: Getting Start-Up

    Page 42 of 98 B.3.4. Getting Start-Up  The unit should not be started up until the system piping has been cleaned and all the air has been purged.  Check condensate drain pipe slope.  After you have connected the main power supply to the cassette unit, it is necessary to check that the condensate water pump installed inside the unit is in working order.

  • Page 43: Maintenance

    Page 43 of 98 Maintenance B.4. 1) Turn off the main power switch before performing any service or maintenance operations. Please see section B. “Safety Precautions”. 2) The air filter is made of acrylic fiber and is washable in water. To remove filter simply open the intake grille by releasing the two catches.

  • Page 44: Air Vent And Water Purge

    Page 44 of 98 Air Vent and Water Purge B.5. Figure 32 Figure 31 Step 1: Remove grille to access the area indicated by the Step 2: Release the air vent / water purge by turning the red line. knobs. Replacing Motor and Fan Blower B.6.

  • Page 45: Replacing Condensate Pump

    Page 45 of 98 Replacing Condensate Pump B.7. Refer to Section B.3.2 for Step 1 - 2. Figure 35 Figure 36 Step 3: Remove front panel and disconnect stepping motor Step 4: Remove the drain pan fixture by unscrewing the 8 and IR receiver.

  • Page 46: Replacing Control Box

    Page 46 of 98 Replacing Control Box B.8. Refer to Section B.3.2 for Step 1 - 3. Figure 39 Figure 40 Step 4: Remove 2 screws from control box. Step 5: Sliding out the control box. Figure 41 Step 5: Remove the terminal cover by unscrewing the 4 screws and unplugging the wiring on the terminal.

  • Page 47: Install Electric Heater

    Page 47 of 98 Install Electric Heater B.9. To access the inner coil area to install the electric heater, please refer to Figure 35, Figure 36 and Figure 37 for Step 1 - 5. Figure 42 Figure 43 Step 6: Snap in the insulated ring of the electric heater to the electric heater mounting shown above. Figure 44 Step 7: Plug in the electric heater wiring to the connector shown above.

  • Page 48: Control Specifications: Skusa-Ncgh-001-Aecm

    Page 48 of 98 C. Control Specifications: SKUSA-NCGH-001-AECM Used in all PCG/PCH [V/P] S unit configurations. Complete function integrated controller, compatible with IR handset controller, wired wall-pad, serial networking for master-slave and MODBUS applications. Abbreviations Ts = Setting temperature AUX1 = Hot water free contact Tr = Room air temperature AUX2 = Chilled water free contact Ti1 = Chilled water coil temperature...
  • Page 49 Page 49 of 98 Code 2-Pipe 4-Pipe Cooling mode signal relay (NO). Voltage free contact. Auxiliary contact 2 AUX2 To ensure the sensitivity of the connection, please make sure max wiring length 98.4ft < Heating mode signal switch (NO). Voltage free contact. Auxiliary contact 1 AUX1 To ensure the sensitivity of the connection, please make sure max...

  • Page 50: Wiring Diagram

    Page 50 of 98 C.2. Wiring Diagram SKUSA-NCGH-001-AECM, ~S Configuration: Full Control PCB: SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)
  • Page 51 Page 51 of 98 Master slave networking wiring diagram: Master unit TO slave unit RS485 RS485 RS485 remote receiver display room temperature cool pipe temperature hot pipe temperature wall pad step moter3~4 CN1~2 CN1~2 CN1~2 step moter1~2 SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 52: Configuration Settings

    Page 52 of 98 Configuration Settings C.3. DIPA-S1 DIPB-S2 SW1-SW5 Network address setting SW5/SW6 Fan Qty setting SW5=0 Single fan application SW6=1 SW5=1 Twin fans application SW6=1 Master / Slave setting SW6=1 Master SW6=0 Slave Preheat temperature setting SW4=1 82.4ºF SW4=0 96.8ºF SW7/SW8 Operating mode...

  • Page 53: Control Logics For 2-Pipe System

    Page 53 of 98 UNIT ON/OFF There are 3 ways to turn the system on or off: a) By the ON/OFF button on the remote handset or wired wall pad. b) By the programmable timer on the handset or wired wall pad. c) By the manual control button on the unit.
  • Page 54 Page 54 of 98 HEAT MODE Heat mode without electrical heater a) MTV2, AUX2 and electric heater are always off. b) If Tr ≤ Ts - 1.8ºF (or - 7.2ºF if economy contact is activated), then heat operation is activated and MTV1 and AUX1 are turned on.
  • Page 55 Page 55 of 98 PRE-HEAT Pre-heat without electrical heater a) If Ti1 < 96.8ºF [or < 82.4ºF is selected by DIPB-S2 position SW4], then MTV1 and AUX1 are turned on, indoor fan runs at 200rpm. b) If Ti1 ≥ 100.4ºF [or ≥ 86ºF is selected by DIPB-S2 position SW4], then MTV1 and AUX1 are turned on, indoor fan runs at set speed.

  • Page 56: Without Valve Configuration

    Page 56 of 98 AUTOMODE Auto cool/heat/heat with electric heater as booster Every time the unit is turned on, MTV1 is on, AUX1, AUX2 and fan are off. MTV2 and heater are always off. After 120sec, the subsequent operation mode is decided according to the following programs: a) If the coil temperature sensor (Ti1) ≥...
  • Page 57 Page 57 of 98 FAN MODE a) Indoor fan runs at the set speed while heater, AUX1, AUX2, MTV1 and MTV2 are turned off. b) Indoor fan speed can be adjusted to low, medium and high. HEAT MODE Heat mode without electrical heater a) MTV1, MTV2, AUX2 and heater are always off.
  • Page 58 Page 58 of 98 Over heat protection of indoor coil in post-heat a) If Ti1 ≥ 167ºF, then AUX1 is turned off, indoor fan remains on and runs at high speed. b) If Ti1 < 158ºF, then AUX1 is turned on, indoor fan remains on and runs at set speed. c) If the indoor coil temperature sensor is damaged, then the protection mode will be overridden and the unit will work according to the pre-heat and post-heat program.

  • Page 59: Control Logics For 4-Pipe System

    Page 59 of 98 Control Logics For 4-Pipe System C.5. Note: 4-pipe system must always be equipped with 2 valves. COOL MODE a) MTV2, AUX1 and Electrical Heater are always off. b) If Tr ≥ Ts + 1.8ºF (or + 7.2ºF if economy contact is activated), then cool operation is activated, MTV1 and AUX2 are turned on.
  • Page 60 Page 60 of 98 PRE-HEAT Without Electrical Heater a) If Ti2 < 96.8ºF [or 82.4ºF depends on DIP setting], then MTV2 and AUX1 are on, indoor fan remains off. b) If Ti2 ≥ 100.4ºF [or 86ºF depends on DIP setting], then MTV2 and AUX1 are on, indoor fan runs at set speed.

  • Page 61: Sleep Mode

    Page 61 of 98 Sleep Mode C.6. a) The sleep mode can only be set when the unit is in cool mode or heat mode. b) If the sleep mode is activated when the unit is in cool mode, then the indoor fan will run at low speed and Ts will increase by 3.6ºF over 2 hours.

  • Page 62: Auto Fan Speed

    Page 62 of 98 Auto Fan Speed C.7. COOL MODE HEAT MODE Fan speed cannot change until it has run for more Fan speed cannot change until it has run for more than 30 seconds. than 30 seconds. Fan speed is regulated according to the profile Fan speed is regulated according to the profile below.

  • Page 63: Buzzer

    Page 63 of 98 Buzzer C.10. If a command is received by the air conditioner, the master unit will respond with 2 beeps for each setting, while the slave unit will respond with 1 beep. Auto Restart C.11. The system uses non-volatile memory to save the present operation parameters when system is turned off or in case of system failure or cessation of power supply.

  • Page 64: Float Switch

    Page 64 of 98 Float Switch C.14. Float-switch opens before unit is turned on. If the float switch (N/C) is opened before the unit is turned on, then MTV1 is turned off. The drain pump and indoor fan will operate. After float switch is closed, MTV1 is turned on. Float switch is opened, when unit is turned on.

  • Page 65: Led Indication And Error Description

    Page 65 of 98 LED Indication and Error Description C.16. SKUSA-NCGH-001-AECM Fan speed setting LED indication Condition High speed Red LED On Normal Medium speed Yellow LED On Normal Low speed Green LED On Normal For all units - Green LED Error Description Blink Reason...

  • Page 66: Led Indication On Master/Slave Connection

    Page 66 of 98 LED indication on Master/Slave connection C.17. For master unit indicating defect status of all slave units. Error message can be found in LED lights on master unit. Master unit LED Unit No. Blink Remedy Unit 2 failure RED LED blinks 2 times, stop 3 sec Check unit 2 communication plug and fix it Unit 3 failure...

  • Page 67: Networking System

    Page 67 of 98 D. Networking System D.1. Master-Slave Network The control PCB can be set either as a master unit or slave unit. MASTER UNIT FUNCTION a) The master unit sends data regarding its setting to the slave unit. b) The master unit settings are Unit ON/OFF, Mode, Fan Speed, Timer, Clock, Set Temperature, Swing Function, and Sleep Function for handset operation.

  • Page 68: Master - Slave Network Setup

    Page 68 of 98 D.1.1. Master – Slave Network Setup 1) Disconnect the communication plug from the SKUSA-NCGH-001-AECM 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) Connection wire 3.1) If the total length of wire is more than 3280.9ft, please use shielded wire in order to protect the signal...
  • Page 69 Page 69 of 98 First unit Middle unit Last unit 3.3) Wire connection check 3.3.1) After the wire connection is completed, please check the wire colours correspond. 3.3.2) Check the wire contact by using a multimeter. contact contact contact contact contact contact 3.3.3) Check 1 and 2, 3 and 4, 5 and 6 to be sure the connections are correct.
  • Page 70 Page 70 of 98 4) Reconnect the communication plug to the control box Using Remote Control Handset to Set Master Control Unit: a) Connect all the units PCBs according to the wire color and type of connector. b) Select the master unit by setting DIPA-S1 SW6 to ON (=1) in the PCB. c) Ensure the DIPA-S1 SW6 is set to OFF (=0) in the PCB on each slave unit.

  • Page 71: Master-Slave Communication Method

    Page 71 of 98 D.1.2. Master-Slave Communication Method There are two modes for Master-slave structure. Global Control communication The Master unit will broadcast the settings to all slave units. During normal operation, slave units can receive commands from its local wireless handset and wall pad control panel. Upon reception of master global commands, all slave unit settings will be replaced by the master settings.

  • Page 72: Open Modbus Protocol

    Page 72 of 98 Open Modbus protocol D.2. Transfer Mode: RTU, BAUD Rate: 9600bps, 8 data bit, 1 stop bit, None parity bit The communications require a delay of 80ms between reading an answer and sending the next command. All temperature is equal to reading data*10 accuracy: 0.18 °F.
  • Page 73 Page 73 of 98 Coils table: Description Address Type* Remark Unit ON/OFF 100000 Sleep mode 100001 Louver swing 100002 Reserved 100003 Reserved 100004 Reserved 100005 Reserved 100006 Reserved 100007 Reserved 100008 Reserved 100009 Reserved 100010 Reserved 100011 Reserved 100012 Reserved 100013 Reserved 100014...
  • Page 74 Page 74 of 98 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 75 Page 75 of 98 Input Register table: Description Address Type* Remark Dip switch 1 status 400000 Dip switch 2 status 400001 Room temperature sensor 400002 Ti1 temperature sensor 400003 Ti2 temperature sensor 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...

  • Page 76: Control Specifications: Skusa-Ncgh-002/003-Aecm

    Page 76 of 98 E. Control Specifications: SKUSA-NCGH-002/003-AECM Used in all PCG/PCH [V/P] W unit configurations. Limited function controller, compatible with 24VAC wired thermostat controller, with zone control functionality.  SKUSA-NCGH-002-AECM is used for PCG/PCH without electrical heater.  SKUSA-NCGH-003-AECM is used for PCG/PCH with electrical heater. E.1.

  • Page 77: Onboard Configuration

    Page 77 of 98 Onboard configuration E.3. The PCB can be configured for different modulating signal inputs. Refer to jumper configuration table below. Code State Description Open PCB configured for 0~5VDC modulating signal input. Closed PCB configured for 0~10VDC modulating signal input. Reserved Reserved SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 78: Wiring Diagrams

    Page 78 of 98 Wiring Diagrams E.4. E.4.1. SKUSA-NCGH-002-AECM FLOAT float control switch for pump FLOAT Pump SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 80: Zone Control Wiring Diagram 1 (On/Off Thermostat)

    Page 80 of 98 E.4.3. Zone control wiring diagram 1 (ON/OFF thermostat) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 81: Zone Control Wiring Diagram 2 (Modulating Signal Thermostat)

    Page 81 of 98 E.4.4. Zone control wiring diagram 2 (Modulating signal thermostat) SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 82: Control Logic Specification

    Page 82 of 98 Control logic specification E.5. E.5.1. Unit power ON/OFF The unit is turned ON when any of the fan speed inputs (H/M/L) are ON, OR Auto ON/OFF signal input is ON. The unit is turned OFF only if all of the fan speed inputs (H/M/L) are OFF AND Auto ON/OFF signal input is OFF.

  • Page 83: Led Indication And Error Description

    Page 83 of 98 LED Indication and Error Description E.6. SKUSA-NCGH-002/003-AECM Fan speed setting LED indication Condition High speed Red LED On Normal Medium speed Yellow LED On Normal Low speed Green LED On Normal For all units - Green LED blinks Item Blink Reason...

  • Page 84: User Interface

    Page 84 of 98 F. User Interface F.1. Remote Handset Attention When unit with handset is the master unit, settings are automatically sent to the slave unit; Auto Cool-Heat operation will be applicable in 4-pipe system only. “Swing” function is not applicable. SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 85: Wired Wall Pad

    Page 85 of 98 Wired Wall Pad F.2. Attention  Wall pad will recognize the main board model automatically whether it is 2-pipe or 4-pipe system.  Auto Cool-Heat operation is applicable in 4-pipe system only. When the wall pad is installed, the wall-pad temperature sensor automatically overrides the default return air sensor (attached to the unit’s return air grille). SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 86: Wall Pad Operation Guidelines

    Page 86 of 98 F.2.1. Wall Pad Operation Guidelines a) Clock display and setting System has an accurate internal real time clock used for time indication and timer ON/OFF function. Clock display TIME area indicates internal time clock which can be set by TIME button.
  • Page 87 Page 87 of 98 TIMER  Press button again to enter into OFF timer programming mode. Press button to select the required day of the week. Master unit will then retrieve the setting from the selected slave unit and timer the display area will show “rEAd”.
  • Page 88 Page 88 of 98 Press to start or stop the unit. m) Networking Master - Slave Control (only master unit wall pad can control other units on the network)  Press button to enter into networking control mode. Unit address blinking indicates the slave unit TIME under control.

  • Page 89: Ec Unit Rpm Setting

    Page 89 of 98 F.2.2. EC unit RPM setting 1) Turn OFF the unit. 2) Open wall pad’s back cover, where two DIP switches can be seen. 3) Turn the DIP switch 1 to “ON” position. 4) Wired wall pad LCD will display the following; This is the speed level setting.

  • Page 90: Sensor Resistance R-T Conversion Table

    Page 90 of 98 G. Sensor 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...
  • Page 91 Page 91 of 98 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...

  • Page 92: Troubleshooting Guide

    Page 92 of 98 H. Troubleshooting Guide Symptoms Cause Remedy The fan coil does - Check for presence of voltage No voltage not start up - Check fuse on board Mains switch in the “OFF Place in the “ON” position position Faulty room control Check the room control...

  • Page 93: Exploded Diagrams & Sub-Assembly Descriptions

    Page 93 of 98 I. Exploded Diagrams & Sub-assembly Descriptions Exploded View for Single Fan Model I.1. SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 94: Spare Parts Of Single Fan Model

    Page 94 of 98 I.1.1. Spare Parts Of Single Fan Model Item Description Item Description Casing Mounting fixture Coil Room sensor Chilled water coil sensor Finger guard Hot water coil sensor Venturi EC Motor Drain pan Fan blower External drain pan Front panel Pump system Front cover...

  • Page 95: Exploded View For Twin Fan Model

    Page 95 of 98 Exploded View for Twin Fan Model I.2. SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

  • Page 96: Spare Parts Of Twin Fan Model

    Page 96 of 98 I.2.1. Spare Parts Of Twin Fan Model Item Description Item Description Casing Mounting fixture Coil Room sensor Chilled water coil sensor Finger guard Hot water coil sensor Venturi EC Motor Drain pan Fan blower External drain pan Front panel Pump system Front cover...

  • Page 97: Accessories

    Page 97 of 98 Accessories I.4. 12-Accessories Item Code Description 12-1 SK-DFPS-A-002.1 Infra-red handset and wall-holder 12-2 SK-DFPS-A-002.2 Wired wall-pad controller 1 pc 2-way valve with 3/4" inch connectors and ON/ 12-3 SKUSA-DFPS-A-003d OFF thermoelectric actuator (24V) 1 pc 3-way bypass valve with 3/4" inch connectors 12-4 SKUSA-DFPS-A-003c and ON/ OFF thermoelectric actuator (24V)
  • Page 98 Page 98 of 98 SK2014 SON-002-TechMnl PCG(H)-V/P-EC-001(Americas)

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