9
ITEM
NO.
GMHB380
1
Pump
2
Boiler Drain
3
System Return
4
Low Water Pressure Cutoff
5
Gas Valve
6
System Supply
7
Gas Supply
8
Condensate Trap
9
Air/Gas Blend Manifold
10
Ignition Electrode
11
Flame Detection Electrode
12
Coaxial Connector
13
Flue Sensor
14
De-Aerator
15
Heat Exchanger
16
Heat Exchanger Temperature
Sensor
17
Water Safety Thermostat
18
NTC Heating sensor (Supply/
Return) QTY 2, (1 Shown for
clarity)
19
Spark Generator
20
Venturi
21
Fan
22
Burner (not shown)
1
2
14
13
16
17
18
11
19
3
4
5
6
7
8
10
12
9
20
15
21
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
PN 240012369, REV A [08/31/2018]
3 - COMPONENT LISTING
