Panasonic WH-SDC12H9E8 Service Manual page 25

Connecting Cables Length
When connecting cables between Indoor Unit and
external devices, the length of the said cables must
not exceed the maximum length as shown in the table.
External device
Two-way valve
Three-way valve
Mixing valve
Room thermostat
Booster heater
Extra pump
Solar pump
Pool pump
Pump
Boiler contact
External control
Tank sensor
Room sensor
Outdoor air sensor
Tank OLP
Buffer tank sensor
Pool water sensor
Solar sensor
Water sensor
Demand signal
SG signal
Heat/Cool switch
External compressor switch
Connection of the main PCB
C O N C O N
2-way
valve
■ Signal inputs
L N =AC230V, Heat, Cool=Thermostat
heat, Cool terminal
Optional Thermostat
optional PCB
Dry contact Vcc-Bit1, Vcc-Bit2
open/short (System setup necessary)
OLP for booster heater
It is connected to the safety device
(OLP) of DHW tank.
Dry contact Open=not operate,
Short=operate (System setup
External control necessary)
Able to turn ON/OFF the operation by
external switch
Connected (Please use 2 cores wire
Remote controller for relocation and extension. Total
cable length shall be 50m or less.)
Maximum cables length (m)
50
50
50
50
50
50
50
50
50
50
50
30
30
30
30
30
30
30
30
50
50
50
50
OLP for booster
heater
Zone 1 room sensor
Outdoor air sensor
Tank sensor
External control
Remote controller
Boiler contact
Extra pump
Booster heater
H C N L
3-way Optional
Thermostat 1
valve
It does not function when using the
■ Outputs
AC230V N=Neutral Open,
3-way valve Close=direction (For circuit switching
when connected to DHW tank)
AC230V N=Neutral Open, Close
2-way valve (Prevent water circuit pass through
during cooling mode)
AC230V (Used when indoor unit pump
Extra pump
capacity is insufficient)
AC230V (Used when using booster
Booster heater
heater in DHW tank)
Boiler contact Dry contact (System setup necessary)
■ Thermistor inputs
PAW-A2W-TSRT
Zone 1 room sensor
optional PCB
AW-A2W-TSOD (Total cable length
Outdoor air sensor
shall be 30m or less)
Tank sensor Please use Panasonic specified part
Connection of Optional PCB
(CZ-NS4P)
Optional Optional
Thermostat 2 Thermostat 1
L N Cool Heat L
Pool
Pump
Solar
Pump
Error
signal
Zone 1
Pump
Zone 2
Pump
Zone 2 Zone 1 Buffer
room room Tank
sensor sensor sensor
■ Signal inputs
L N =AC230V, Heat, Cool=Thermostat
Optional Thermostat
heat, Cool terminal
Dry contact Vcc-Bit1, Vcc-Bit2
open/short (System setup necessary)
SG signal
Switching SW (Please connect to the 2
contacts controller)
Dry contact Open=Heat, Short=Cool
Heat/Cool SW
(System setup necessary)
Dry contact Open=Comp.ON,
External comp. SW Short=Comp.OFF
(System setup necessary)
DC 0~10V (System setup necessary)
Demand signal Please connect to the DC 0~10V
controller.
It does not work when using the
Mixing Mixing
valve 1 valve 2
N Cool Heat N O C N O C
Pool Zone 2 Zone 1 Demand Solar
sensor
water water water signal
sensor sensor sensor
Ext.
comp.
SW
Heat/
Cool
SW
Vcc
SG
Bit1
signal
Bit2