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Output signal function wiring
Connect the following output signals from the hot water module.
NOTE
Auxiliary relays (locally procured) must be connected to output signal function wirings to allow connection to the
hot water module output signal functions. The maximum current output signal, from each of the output signal
function wirings, is 16 mA. Please ensure the rated current of the relay coil is less than 16 mA to avoid damage to
the hot water module P.C. board.
▼
Output function wire
CAUTION
Output signal functions are separated from primary basic insulation.
• To prevent noise trouble, use 2-core shield wire.
• Determine the wire length between the hot water module output signal function terminal block and the relay up
to 2 m.
• Locally procure and install protective devices such as the heater and pump.
Terminal
block No.
Function
Comments
COM
DC12V (COM)
Common for connector S2 ~ S5
S1
Defrosting output (COM-S1)
DC12V
Relay coil is less than 16mA.
S2
Line heater output (COM-S2)
DC12V
Relay coil is less than 16mA.
S3
-
-
S4
Heating thermostat ON output (COM-S4)
DC12V
Relay coil is less than 16mA.
S5
Pump output (COM-S5)
DC12V
Relay coil is less than 16mA.
COM
S1
S2
S3
S4
S5
External
actuator
Output function wire
Hot water module
output signal
function terminal
block (CN60)
Locally procured
Relay
Outside trouble input wiring
• In case of connecting the Relay (procured locally) for outside trouble input, connect a connector with wire
(accessory) to CN703 on I/F P.C. Board (MCC-1628).
• After signal is input, 3 sec. later : Forced thermostat - OFF
1 min. later : Check code “L30” (Hot water module is locked)
(Interlock from outside)
1 1
2 2
3 3
4 4
5 5
6 6
* Use the relay for micro-load.
I/F P.C. Board output is 2 to 3 mA.
Relay coil signal
I/F P.C. Board (MCC-1628)
Connector with wire (accessory)
Max. 2 m
Procured locally
Relay
CN703
COM
Outside trouble input
49-EN
50-EN
Summary of Contents for MMW-AP0481CHQ-E
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