1.4.2.12-15 kW Connection Diagram
Neu
tr
a
l
T
e
rm
in
a
l
Circuit Breaker
Contactor
Neu
tr
a
l B
u
sb
a
r
Electrical Heaters
L
im
it T
h
e
rm
o
st
a
t
Relay Boards
CH Inlet NTC
CH Return NTC
DHW/Boiler Tank NTC
3-Way Valve
DHW Solar STB
Water Pressure Sensor
DHW Supply Sensor
Modbus Communication
Pump
Ou
tsid
e
A
ir
NT
C
P
ro
g
ra
m
m
a
b
le
ti
m
e
r
Casca
d
e
Ca
rd
P
u
m
p
G
ND
P
u
m
p
P
W
M
P
u
m
p
E
n
co
d
e
r
M
o
d
u
lat
e
d
Ro
o
m
T
h
e
rm
o
sta
t
Wi
-F
i B
o
a
rd
Con
n
e
ctio
n
10
