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[ II Restrictions ]
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HWE0803A GB
CAUTION
1) Wiring should be covered by insulation tube with supplementary insulation.
2) Use relays or switches with IEC or equivalent standard.
3) The electric strength between accessible parts and control circuit should have 2750V or more.
Example of wiring connection
(1) CN51
(2) CN3S
CN51
X
Y
L
1
L
2
ecruosrewoppmaL
Distant control
board
Relay circuit Adapter
1
Outdoor unit
control board
Preparations
in the field
Maximum cable
length is 10m
5
4
3
X
Y
L1 : Outdoor unit error display lamp
L2 : Compressor operation lamp (compressor running state)
X, Y : Relay (coil =<0.9W : DC12V)
1. Optional part : PAC-SC37SA-E or field supply.
2. Optional part : PAC-SC36NA-E or field supply.
X : Relay
Snow sensor : The outdoor fan runs when X is closed
in stop mode or thermostat mode.
X
CN3S
Preparations
in the field
Maximum cable
length is 10m
Adapter
2
Outdoor unit
control board
2
3
1
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
Relay circuit
(3) CN3N
2. Optional part : PAC-SC36NA-E or field supply.
Preparations
in the field
OFF
Cooling
ON
Heating
Normal
Y
OFF
ON
X
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
X : Cooling / Heating
Y : Validity / Invalidity of X
X,Y : Relay
CN3N
X
Y
Relay circuit
Adapter
2
Outdoor unit
control board
Maximum cable
length is 10m
1
2
3
(4) CN3D
2. Optional part : PAC-SC36NA-E or field supply.
X : Low-noise mode
X : Low-noise mode
Y : Compressor ON/OFF
X,Y : Relay
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum appicable load =< 1mA at DC
Y
X
CN3D
Preparations
in the field
Maximum cable
length is 10m
Adapter
2
Outdoor unit
control board
3
2
1
Relay circuit
2. Optional part : PAC-SC36NA-E or field supply.
X
CN3D
Preparations
in the field
Maximum cable
length is 10m
Adapter
2
Outdoor unit
control board
2
3
1
X : Relay
fan frequency and maximum compressor frequency.
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
Low-noise mode : The noise level is reduced by controlling the maximum
Relay circuit