38
Connecting external contact
f Refer to the below table for the terminal numbers that needs on the site for connecting external contact.
Terminal No. External contact Operation status / inspection checklist Remarks
B1, B2 Operation check
Check on/off status for operation lamp of the control panel on
the site
Optional
B3, B4 Alarm Check on/off status for alert lamp of the panel on the site Optional
B5, B6 Water pump
Check the status of the pump operation signal and on/off status
of operation at the control panel on the site
Mandatory
B7, B8 Booster heater
Check the status of the heater operation signal output at the
control panel on the site
Optional
B9~B11 3Way valve 1
Check the status of signal output and on/off status of valve
operation (Direction switch of the indoor hot water tank)
Optional
B12~B14 3Way valve 2
Check the status of signal output and on/off status of valve
operation (interlocked with solar pump signal)
Optional
B15~B17 2Way valve Check the status of signal output or operation status of the valve Optional
B19, B20 AC230, Thermostat 1
Check the connection status of the thermostat and operation
status of the product (cooling)
Optional
B21, B22 AC230, Thermostat 2
Check the connection status of the thermostat and operation
status of the product (heating)
Optional
B23, B24 AC24, Thermostat 1
Check the connection status of the thermostat and operation
status of the product (cooling)
Optional
B25, B26 AC24, Thermostat 2
Check the connection status of the thermostat and operation
status of the product (heating)
Optional
1, 2 (1, 2)
Indoor temperature
sensor
Check the temperature display on the wired remote controller
after separately installing the indoor temperature sensor (Refer to
option setting of the wired remote controller)
Optional
7, 8 (3, 4)
Temperature sensor for
water tank
Check the temperature display on the wired remote controller
after installing the 4~20mA temperature sensor
Mandatory
(hot water supply
operation)
13, 14 (5, 6) Solar pump
Check the solar pump contact signal input and status of the
operation
Optional
16, 17 (7, 8) External control Check the contact signal input and status of the operation Optional
19, 20 (9, 10) Smart grid Check the Smart Grid contact input and the signal Optional
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