Mitsubishi WYNC0-1545A Technical Guide

AHU Controller Specifications

1. Application

This controller is used to set up a system by connecting a field-supplied Air Handling Unit (AHU) to Mitsubishi Electric City Multi outdoor unit.

Applicable models: PAC-AH125, 140, 250, and 500M-J

2. System restrictions and use of range

(1) System configuration

Connectable outdoor units PUHY-P250,300,350,400,450,500YGM-A,

PUHY-P*Y(S)HM-A, PUHY-P*Y(S)JM-A, PUHY-EP*Y(S)HM-A, PUHY-EP*Y(S)JM-A, PUHY-HP*Y(S)HM-A, PUHY-RP*Y(S)JM-A, PQHY-P*Y(S)HM-A, PURY-P*Y(S)HM-A, PURY-P*Y(S)JM-A, PURY-EP*Y(S)HM-A, PURY-EP*Y(S)JM-A, PURY-RP*Y(S)JM-A, PQRY-P*Y(S)HM-A

*PAC-AH500M-J can NOT be connected to PURY and PQRY. Refrigerant type R410A Capacity of connectable AHU units and indoor units

    *Air flow rate is limited to the table shown in 4(1) when AHU is connected with standard indoor units.

(2) Operating conditions

[PUHY and PURY Series]

Operating conditions of indoor, outdoor, air handling units (cooling/heating) Unit Type Cooling Heating AHU (Heat exchanger inlet air temperature) Outdoor unit refer to the specifications of outdoor unit *Discharge air temperature would be unstable when the inlet air temperature is more than 15℃.

[PQHY and PQRY Series]

Operating conditions of indoor, inlet water, air handling units (cooling/heating) Unit Type Cooling Heating AHU (Heat exchanger inlet air temperature) Inlet water temperature 10~45ºC 10~45ºC *Discharge air temperature would be unstable when the inlet air temperature is more than 15℃.

(3) Refrigerant pipe size, pipe length, and height difference restrictions

Model names Unit capacity Pipe size(Liquid / Gas)

15~24ºCWB -10~15℃DB(Discharge air temp. control)*

15~24ºCWB 5~15℃DB(Discharge air temp. control)*

80~100% of outdoor unit capacity

-10~20℃DB(Suction/return air temp. control)

5~20℃DB(Suction/return air temp. control)

PAC-AH125M-J PAC-AH140M-J

100, 125, 140 Φ9.52 / Φ15.88

200 Φ9.52 / Φ19.05 PAC-AH250M-J 250 Φ9.52 / Φ22.2

400 Φ12.7/ Φ28.58 PAC-AH500M-J 500 Φ15.88 / Φ28.58

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

Pipe length Height difference

Refer to the technical data book of the outdoor unit.

Amount of refrigerant

Refer to the technical data book of the outdoor unit.

to be added

3. Product configuration

(1) Series configuration

Several types of controllers to accommodate different AHU capacities are available. Select the appropriate controller.

Model name PAC-AH125M-J PAC-AH140M-J PAC-AH250M-J PAC-AH500M-J

Cooling

Heating

Reference air flow rate (m3/h) Unit capacity

Max. capacity (kW) Min. capacity (kW) Max. capacity (kW) Min. capacity (kW)

11.2 14.0 16.0 22.4 28.0 45.0 56.0

9.0 11.2 14.0 16.0 22.4 36.0 45.0

12.5 16.0 18.0 25.0 31.5 50.0 63.0

10.0 12.5 16.0 18.0 25.0 40.0 50.0

2000 2500 3000 4000 5000 8000 10000

100 125 140 200 250 400 500

* Calculate the capacity of connectable indoor units using the “Unit capacity” in the table above.

The Unit capacity is set at the model name at factory shipment. Change the Unit capacity to the appropriate value for the selected controller using the switch on the controller board. When it is needed, refer to the installation manual for how to change the Unit capacity.

* Refer to the technical data book of the outdoor unit about the actual capacity.

(2) Controller components

Name Usage Controller

Controller board For operation control Transformer For controller board Terminal block For power source, for external I/O, for internal and external

communication, for remote controller, and for thermistor Connector For remote controller and for level input switch Relay For operation display and for error display

LEV-kit Thermistor

Electronic linear expan. valve For detection of suction air temperature, discharge temperature,

liquid pipe temperature, and gas pipe temperature

Clip

For mounting suction air and discharge air temperature

thermistor

Insulation Tie band Tube Installation manual

For insulating liquid pipe and gas pipe thermistor For fixing liquid pipe and gas pipe thermistor For fixing wiring

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(3) Major specifications

Power supply 220~240V 50/60Hz External dimension (mm) 378(420)×328×104(122)

Net weight (kg) 5 External finish(Munsel No.) Galvanaized steel IP-class IP2X

Remote controller temperature setting range

Operation

Cooling

Heating Auto

Operation by optional remote controller

ON/OFF Operation by external input*

Setting temperature by external input

The figure in ( ) indicates mounting's.

14~30ºC 17~28ºC

17~28ºC

Press ON/OFF button on the remote controller to start/stop the operation. Following settting can be done by optional remote controller(PAR-21MAA):

1)Temperature setting Discharge air temperature setting or Suction air temperature setting are available by DIP switch setting. Please refer to “Switch function” in detail.

2)Operation mode setting

Please refer to the operation manual of the remote controller in detail.

*Remove the attached connector "CNRM" in case the optional remote controller is used for its operation.

Connect the field-installed external thermostat (ON/OFF) to the external input (SW1:ON/OFF) to start the operation when the external thermo is ON, and stop the operation when it is OFF. *Set the attached connector "CNRM" in case the external input is used for ON/OFF operation.

Discharge air temperature setting or suction air temperature setting can be done by analog input (0-10V) accordingly (Analog input operation).

Setting from remote controller is not available when analog input setting is used. (Either remote controller setting or analog input operation is selected.)

Do not operate the system controller when analog input setting is used. It would cause conflicting operation with analog input operation and unit would not operate in good working order. ＜Setting＞ Set the DIP switch 8-2 ON when Analog input operation is used.

SW8-2 Analog input

OFF NOT effective (initial setting)

ON Effective

When the discharge air temperature control mode is selected, lower limit setting of the discharge air temperature in cooling mode is chosen as below table,

SW3-5 Lower limit setting temperature OFF

14℃ (Initial setting) 8℃

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Setting temperature by analog input (0-10V) operation is chosen as

below setting (Type1 or Type2).

SW8-3 Analog input type Restriction

OFF Type1 (Initial setting) Auto mode is available

ON Type2 Auto mode is NOT available

i)Type1 <For temperature control>

Cooling/Heating

-Setting temperature = 2.5×Ain + 5.0 : *Ain=Input Voltage

-Condition

SW3-5=OFF (SW8-3=OFF) SW3-5=ON (SW8-3=OFF)

Setting temperature

℃

3.6 9.2 Input Voltage

Setting temperature

℃

1.2 Input Voltage

Suction temp. control is N/A

9.2

*When the setting temperature in heating mode is 17℃ or less, the discharge air temperatutre can be unstable.

ii)Type2 <For capacity control> Cooling

-Setting temperature = -2.5×Ain + 31 : *Ain=Input Voltage

-Condition

SW3-5=OFF (SW8-3=ON) SW3-5=ON (SW8-3=ON)

Setting temperature

℃

Setting temperature

℃

1.2

6.8

Input Voltage

1.2

Input Voltage

Suction temp. control is N/A

9.2

Heating

-Setting temperature = 2.5×Ain + 5.0 : *Ain=Input Voltage

-Condition

SW3-5=OFF (SW8-3=ON) SW3-5=ON (SW8-3=ON)

Setting temperature

℃

3.6 9.2

Input Voltage

Setting temperature

℃

1.2

Input Voltage

Suction temp. control is N/A

9.2

*When the setting temperature in heating mode is 17℃ or less, the discharge air temperatutre can be unstable.

*Setting temperature is updated when the voltage variation of 0.2V or more is detected for 1 sec or more.

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Temperature control

Contact input Following functions can be controlled from local controller by using

MAC-397IF-E.

-External control (ON/OFF)

-External output (ON/OFF, Error)

-Mode select(Cooling/Heating)

-Setting temperature

Refer to the installation manual of MAC-397IF-E about details. Interlock operation with AHU fan

Temperature control by optional remote controller

Interlock setting between the error stop of AHU fan and the external

error input must be made to close the LEV of AHU

heat exchanger when AHU fan makes an error stop. Refer to

section 5 for details.

Discharge air temperature control or suction/room air temperature

control can be chosen by changing the switch on control board and by changing the position of attached thermistor.

In controlling the discharge air temperature, the capacity is controlled so that detection temperature of the thermistor installed in an outlet of AHU reaches the set temperature by remote controller. In controlling the suction/room air temperature, the capacity is controlled so that thermostat becomes OFF if detection temperature of the thermistor installed in an inlet of AHU or the room reaches the set temperature by remote controller.

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Temperature control

Temperature control by optional remote controller

(i)Thermostat condition in controlling the discharge air temperature

TH21:Discharge air temperature TH24:Suction air temperature To : The preset temperature on the remote controller *The value shown with a square in the table below can be changed by a dip-switch.

Cooling The range of “To”

Thermostat OFF a) or b) or c) Thermostat ON a) & b) & c) & d)

Heating The range of

“To”

Thermostat OFF a) or b) or c) Thermostat ON a) & b) & c) & d)

14〜30℃

a) TH24<To b) TH24<14℃ c) TH21<To – 2℃ is continued for 10 minutes. a) TH24 > To +1℃ b) TH24 > 15℃ c) TH21 > To +1℃ d) It passes from thermostat OFF for 3 minutes.

17〜28℃

a) TH24>To b) TH24>15℃ c) TH21>To + 3℃ is continued for 10 minutes. a) TH24 < To –1℃ b) TH24 < 14℃ c) TH21 < To –1℃ d) It passes from thermostat OFF for 3 minutes.

(ii)Thermostat condition in controlling the suction/return air temperature

TH21:Suction/Return air temperature TH24:Suction air temperature To : The preset temperature on the remote controller *The value shown with a square in the table below can be changed by a dip-switch. Cooling The range of “To”

Thermostat OFF a) or b) Thermostat ON a) & b) & c)

Heating The range of “To”

Thermostat OFF

14〜30℃

a) TH24<20℃ b) TH21<To-0.5℃

a) TH24 > 21℃ b) TH21 > To +0.5℃ c) It passes from thermostat OFF for 3 minutes.

17〜28℃

a) TH24>21℃ b) TH21>To

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