GB - 9
42 WHC/WHE
E N G L I S H
Electrical connections
Table V: Printed circuit for unit with electric heater
Connection
Reference
Connection
Connection
Number of
Installer
sequence
figure
device
poles
connection
1
M1
Water valve
Screw terminal block
2
X
2
M5
Wall control with
Screw terminal block
8
X
room thermostat
3
M3
Condensate drain pump
Screw terminal block
3
X
4
GND
Ground
Ground
2 male faston connectors
X
5
CN2
Electric heater
Polarised connector
3
X
6
M2
High water temperature
Screw terminal block
2
X
(accessory)
protection thermostat
7
CN1
Fan motor
Polarised connector
6
X
8
M4
Power supply
Screw terminal block
3
X
===
RL1
Electric heater auxiliary relay
Connections only
===
on printed circuit
===
SW1
Electric heater only /
Connections only
===
hot water switch
on printed circuit
Mod. 42WHE connections
FAN MOTOR
M4
CN1
GND
PUMP
M3 M2
M1 VALVE
L
N
TH
HTR
V1
V2
RL1
L
N
1
2
3
4
5
6
7
8
M5
CN2
H 0 + HTR
2
ONLY HTR
SW1
230V ~ 50/60Hz
HEA
TER
햴
햵
햶
햷
햳
햸
햹
햺
F1
햲
햲
To unit motor
햳
To the electric heaters
햴
Ground
햵
Condensate drain pump
햶
Max. water temperature
thermostat
햷
Valve
햸
Operation mode selector
햹
Fuse
햺
To control
GND
FAN MOTOR
M4
CN1
L
N
HT
C
CL
V1
V2
RL1
L
N
1
2
3
4
5
6
7
M5
CDP
CN2
M3
PUMP
M2
C/OVER
M1 VALVE
쐃
쐇
10
90
60
F1
쐃
To control
쐇
Power supply