Harsco Industrial C1500H Installation & Owner's Manual page 77

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6.2.10 MACH C2500GG/C3000GG Dual Fuel Gas Train
5
6
10
8
12
13
2
7
4
9
1
3
11
77
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MACH Gas Fired Boiler
Mark Description
1 Burner
2 Burner Transition Piece
3 Blower Transition Piece
4 Blower
5 Venturi
6 Secondary Manual
Shutoff Valve quantity of
two second not shown
7 Propane or LP Automatic
Gas Valve
8
Natural automatic gas
valve
9 Main Gas Shutoff Valve
10 Natural Gas high
Pressure Switch
11 Natural Gas Low
Pressure Switch
12 High Exhaust
Backpressure Switch
13 Propane or LP Gas low
pressure switch
14 Propane or LP high gas
pressure switch (not
pictured)