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 108
7.4.5 Natural Gas / Propane Gas Train, Burner & Blower Assembly (C-2500 & C-3000)
Mark
Description
Mark
Description
1
External (Upstream) Gas Cock
7
Burner Gasket
2
Gas Piping & Supports
8
Stainless Steel Mesh
Burner
3
Low Gas Pressure Switch
9
Air Intake Box
4
Main Gas Shutoff/Control Valve
10
Air Intake Box Cover Plate
5
Auxiliary High Exhaust Back Pressure (“Dirty Burner”)
Switch
11
Combustion Blower / Fan
6
Burner Hood Casting
12
High Gas Pressure Switch
1
2
4
8
6
9
11
10
3
5
7
12