Lochinvar HWHC 44-370 G CE Installation, Commissioning, User & Maintenance Instructions page 111

Cable colors:
1 Brown
2 Blue
3 Green
4 Black
5 White
6 Grey/Beige
7 Green
8 Yellow
Terminal strip connections:
Earth
A
N Neutral
L Live input of controller
L Live input of isolating transformer
1
(primary side)
L Live output of isolating
2
transformer (secondary side)
L Live input of program-controlled
3
pump
0311746_HWHC_44-63_II_ENEN_V2.6, 2022-10-17
Components:
A Control
B Flame probe
C Hot surface igniter
D Gas control valve
E Burner earth connection
F Extra ON mode switch
G Program-controlled pump
(max. 100W)
H Extra error signal connection
J Isolating transformer
K Double-pole isolator
L Controller O/I switch
M Display
N Fan
O Temperature sensor
(T - bottom of tank)
2
P Dummy
Q Temperature sensor
(T - top of tank)
2
R Selection resistor
S Push button
T Electrical anodes
U Signaling for electrical anodes
V Potentiostat
W Communication between the
appliance controller and the solar
system (BUS connection)
AA Solar system controller
Controller connections:
J2 Power connection for controller
J19 Extra error signal connection
J20 Gas control valve connection
J21 Program-controlled pump
connection
J29 Power connection for the fan
J36 Controller display connection
J40 Regulator connection for the fan
JP2 Flame probe and hot surface
igniter connection
JP3 Temperature sensor T
JP4 Dummy connection
JP5 Temperature sensor
T connection
1
JP6 Selection resistor and pressure
switch connection
JP8 Extra ON mode switch
connection
F1 Fuse (T 3.15A - 250 V)
F3 Fuse (T 3.15A - 250 V)
connection
2
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