P-K MACH
®
Gas Fired Boiler
Technical Service 1.877.728.5351
Revised: January 3, 2020
Released: January 3, 2020
Patterson-Kelley 2020
All Rights Reserved.
1004905981 P-K MACH C1500H-C4000 Installation and
Owners Manual (Rev F Jan-2020).docx
Page 55
4.4.2 Natural Gas Train and Propane Gas Train Locations (C4000GG)
The dual fuel MACH C4000GG features a 2” gas valve/cock on the rear surface for Natural Gas and a
1-
1/2” gas valve/cock on the top surface for Propane Gas as shown below:
1-
1/2” NPT-F
Propane Gas
2” NPT-F
Natural Gas
If operating with Natural Gas, ensure the Propane Gas valve/cock is CLOSED.
If operating with Propane Gas, ensure the Natural Gas valve/cock is CLOSED. Failure to do so could
result in equipment damage, injury, and/or death.
