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12.4.2.3 Connection of the main PCB
Zone 1 room sensor
Tank sensor
External control
Remote controller
Extra pump
H C N L
C O N C O N
Outdoor air sensor
Boiler contact /
Defrost Signal
2-way
valve
3-way
valve
Optional
Thermostat 1
Signal
inputs
Optional Thermostat
L N =AC230V, Heat, Cool=Thermostat heat, Cool terminal
It does not function when using the Optional PCB
External control
Dry contact Open=not operate, Short=operate
(System setup necessary)
Able to turn ON/OFF the operation by external switch
Remote controller
Connected (Please use 2 cores wire for relocation and extension. Total cable length
shall be 50m or less.)
Outputs
3-way valve
AC230V N=Neutral Open, Close=direction (For circuit switching when connected to
DHW tank)
2-way valve
AC230V N=Neutral Open, Close (Prevent water circuit pass through during cooling
mode)
Extra pump
AC230V (Used when Tank Unit pump capacity is insufficient)
Boiler contact
Dry contact (System setup necessary)
Thermistor
inputs
Zone 1 room sensor
PAW-A2W-TSRT
the Optional PCB
It does not work when using
Outdoor air sensor
AW-A2W-TSOD (Total cable length shall be 30m or less)
12.4.2.4 Connection of Optional PCB (CZ-NS4P)
Vcc
Solar
sensor
Demand
Zone 1
water
sensor
Zone 2
water
sensor
Pool
water
sensor
Buffer
Tank
sensor
Zone 1
room
sensor
Zone 2
room
sensor
Zone 1
Pump
Error
Pool
Pump
Solar
Pump
Zone 2
Pump
N O C
N O C
L N Cool Heat L N Cool Heat
Optional
Thermostat 2
Optional
Thermostat 1
Mixing
valve 1
Mixing
valve 2
Ext.
comp.
SW
Heat/
Cool
SW
Bit1
Bit2
SG
signal
signal
signal