20
Heater Diagnostics
M
Optional
Brown
Black
Brown
Violet
Brown
White
Green
Green
Red
Red
Blue
Blue
Brown
Blue
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Yellow
Yellow
Red
Brown
Brown
Brown
Blue
Blue/White
Black/Red
DIAG
TRS
Blue
a) Power frombattery“+”.
b) Switchcontrol toheater.
c) Power frombattery“-”.
d)Diagnostics fromheater.
e)Tovehicledimmer switch for lightdisplay.
f)Tovehicle ignitionaccessories for continuous
operationof heater.
12 11 10 9 8 7 6 5 4 3 2 1
4 3 2 1
1
2
3
4
5
6
7
8
b)
a)
d)
c)
4 3 2 1
2 4 6 8
1 3 5 7
8 6 4 2
7 5 3 1
3.2.9
5.1
2.7
2.5.8
Red
Red
Red/Yellow
Red
Brown
Red
Brown
Black/Red
Green
Blue/White
Blue
Yellow
Black/White
S1 B1
S1
B1
B3
2.1
1.1
2.12
1.2
2.2
1.5
1.13
1.12
1 3 5 7 9 11 13
8 7 6 5 4 3 2 1
87
87a 85
30
86
1 2
3 4
B2
B2
P
2 4 6 8 10 12 14
M
h)
Optional
e)
Optional
f)
Brown
HydronicD5SC 12Volt
Model 25 1920 05
WiringHarnessP/N:
202900700401
(CA060401)
1.1 Blower motor
1.2 Glow pin
1.5 Overheat sensor
1.12 Flame sensor
1.13 Temperature sensor
2.1 Control unit
2.12 Water Pump
2.2 Fuel metering pump
2.5.8 Blower lock out resistor
2.7 20 ampmain fuse
3.12 Push/Pull switch
3.2.9 7 day timer
5.1 Battery
Red
K(15)
15(K)
Yellow
Brown
31
0
3.1.1
Push/Pull switch
7 day timer
3.12
