
Circuit Diagram
Figure 14
Flow sensor
Outlet water
temperature
sensor
Inlet water
temperature
sensor
Red
Red
Red
Terminal
block
Heating element
Yellow &
Green
Yellow &
Green
Yellow &
Green
Brown
Blue
N E
L
Water
PH4
Display
CON1
VCC
T1
Control
Board
Display
Board
Temp1, PH2
(Blue, Inlet)
Temp2, PH3
(Red, Outlet)
Yelllow
Black
Black
Black
Thermal
Cut-out
Black
Black
TRIAC
Red
T1
T2
G
Black
Black
Black
Black
ZIP 7.5 kW
Flow sensor
Outlet water
temperature
sensor
Inlet water
temperature
sensor
Red
Red
Red
Terminal
block
Heating element
Yellow &
Green
Yellow &
Green
Yellow &
Green
Brown
Blue
N E
L
Water
PH4
Display
CON1
VCC
T2
Control
Board
Display
Board
Temp1, PH2
(Blue, Inlet)
Temp2, PH3
(Red, Outlet)
Yelllow
Black
Black
Black
Thermal
Cut-out
Black
Black
Black
TRIAC
Red
T1
T2
G
Black
Black
Black
Black
Red
Heating element
Yellow &
Green
T2
Black
TRIAC
T1
T2
G
ZIP 9 kW
12