Cn24Relay-Kit-Cm3 (Optional Parts) Installation - Mitsubishi Electric M Series Service Manual

9-3. CN24RELAY-KIT-CM3 (Optional Parts) installation

The following section describes installation of the External Heater Adapter that connects to MVZ-A AA7
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..................................................................... 2 in total
Two types of cables with different connectors are included.
2) Panel heater connector.................................................................. 3 in total
White: 3
3) Relay
(2) Connection to the indoor unit
Use the cables that fit the connectors on the indoor unit control board.
1) External output cable
This cable is used to connect a relay circuit for an interlocked operation with either an electric or a panel heater.
Select the heater output pattern (1st = CN24-1 or 2nd = CN24-2) to use, and connect the cable to the connector
on the indoor unit control board that corresponds to the selection.
2) Panel heater 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.
CN4Y for FAN control
(CN24RELAY-KIT-CM3)
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