IBC SL 35-199 Operating Instructions Manual page 67

Better
Boilers
blue
3
red
4
blue
7
blue
9
orange
15
orange
2
blue
1
black
1
black
2
yellow
4
yellow
3
black
5
white
6
21
14
To install optional vent
temperature sensor,
available on some models.
See manual for details.
white
22
white
13
white
23
white
12
red
27
white
28
red
34
yellow
33
black
32
red
6
black
5
yellow
4
yellow
black
Diagram 6.2-2: Internal wiring diagram
DIAGRAMS
SL 35-199, SL 45-260 MODULATING GAS BOILERS
Combustion
Fan
5 x plug
Transformer
Vent High
black Limit
Switch
Upper Vessel
High Limit
Switch
Water
High Limit
Switch
4 x plug
orange
yellow
blue
Remove jumper plug to
install optional LWCO kit.
See manual for details.
Inlet Water
Temperature
Sensor
2 x plug
Outlet Water
Temperature
Sensor
2 x plug
VS Out 0-10VDC
Air Differential
Prsssure
Sensor
Inlet Water
Prsssure
Sensor
INTERNAL WIRING DIAGRAM
Sensing Rod
green
white
white
black
120Vac
black
Mains
Power Supply
yellow
To Boiler Pump
brown
Gas
Valve
blue
green
blue
brown
orange
green
Spark
Electrode
and Flame
Assembly
TB1
black
9
white
10
Replacement internal wiring
must meet or exceed the
ratings of the wiring supplied
from the factory.
green green
Grounded
to case
white
100-013A
6-7