Harsco Industrial 1004905923 Installation & Owner's Manual page 50

6.1.8 Gas Train
6
5
4
2
8
1
®
MODU-FIRE Forced Draft Gas-Fired Boiler 2500-3000
7
3
50
Mark Description
1 Main Gas Shutoff
Valve
2 Low Gas Pressure
Switch
3 Leak Test Ports
4 Automatic Dual
Gas Valve
5 Solenoid Coils
6 High Gas
Pressure Switch
7 Secondary Gas
Shutoff Valve
8 Air Gas Mixer