Mitsubishi Electric Mr. Slim PEA Series Technical & Service Manual page 13

6-3. PAC-YU25HT (Optional Parts) installation
The following section describes installation of the External Heater Adapter that connects to PEA-A AA
series indoor unit. This products is the special wiring parts to drive an electric heater with the air conditioner.
(1) Parts list
Check that the following parts are included in the package.
1) External output cable (with a yellow connector).............................2 in total
Two types of cables with different connectors are included.
2) Panel heater connector.................................................................. 3 in total
White: 1
Green: 2 (2 types)
(2) Connection to the indoor unit
Use the cables that fit the connectors on the indoor unit control board.
1) External output cable (with a yellow connector)
This cable is used to connect a relay circuit for an interlocked operation with either an electric or a panel heater.
Connect the cable to CN24 on the indoor unit control board.
2) Panel heater connector (with a white connector)
This connector is used to perform an interlocked operation with a panel heater. Depending on the indoor unit
control board specification, connect the cable to CN4Y as appropriate
<Image>
CN4Y for FAN control
(PAC-YU25HT)
(3) Locally procured wiring
A basic connection method is shown below.
Remote control board Relay circuit
Electric Heater
or panel
heater
Preparations in the field
Adapter
X
X
(applicable only when a panel
heater is connected)
Maximum cable length
is 10 m (32ft)
13
Indoor unit
control board
CN24
Red 1
White 2
CN4Y
White 1
3