Harsco Industrial C1500H Installation & Owner's Manual page 79

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6.2.12 MACH C4000GG Dual Fuel Gas Train
14
3
5
8
12
11
13
9
1
2
10
6
4
7
79
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MACH Gas Fired Boiler
Mark Description
1 Air Intake Plenum
2 Natural Gas Low Pressure
Switch
3 Propane or LP Gas Low Press
4 Natural Automatic Gas Valve
5 Propane Automatic Gas Valve
6 Primary Manual Shutoff Valves
7 Natural High Gas Pressure
Switch(not pictured)
8 Propane or LP High Gas
Pressure Switch
9 Secondary Manual Shutoff Valve
quantity of two
10 Burner
11 Blower
12 Burner Transition Piece
13 Blower Manifold
14 High Exhaust Backpressure
Switch