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 16
Gas Piping Considerations
Before making the gas hook-up, make sure the boiler is being supplied with the type of fuel shown on
the boiler nameplate.
Supplying a fuel other than that shown on the appliance’s
nameplate can lead to over firing of the appliance. This can
cause damage to the equipment which could result in serious
injury and/or death.
The boiler shall be installed such that gas ignition system components are protected from water
(dripping, spraying, rain, etc.) during appliance operation and service (circulator replacement, control
adjustment, etc.).
Water Quality Standard
The P-K MACH
®
boiler’s heat exchanger is made of cast Aluminum. The heat exchanger requires
proper water
conditions to remain efficient and function properly. For more information, refer to
Patterson-
Kelley’s Water Quality Standards for Hydronic Boilers in Multi-Metal Systems in
– Water Quality Standards Quality Standards for Hydronic Boilers in Multi-Metal Systems
applies to the warranty of your heat exchanger.
3 Installation
Overview
For site preparation follow the guidelines established in Section
. Section 3 details the installation
requirements for electrical connections, combustion air, and flue vent piping, hydronic piping, etc.
Appliance Connections
The table below summarizes the appliance connections to the P-K MACH
®
series boilers:
Boiler Model
C-1500H & C-2000H
C-2500
C-3000 & C-4000
Power Requirement
110-120/1/60 VAC
208-240/3/60 VAC
-or-
440-480/3/60 VAC
Air Intake Connection
10”
12”
Nominal Exhaust Vent
Connection
10”
Condensate Drain
3/4" Flexible Tubing
Heat Exchanger Drain
3/4" NPT-F
Natural Gas Shutoff Valve
1-
1/2” NPT-F
2” NPT-F
Propane Gas Shutoff Valve
1-
1/2” NPT-F
HWR Connection
2-
1/2” Grooved (Carbon Steel)
3” Grooved (Carbon Steel)
4” Grooved (Carbon Steel)
HWS Connection
2-
1/2” Grooved (Carbon Steel)
3” Grooved (Carbon Steel)
4” Grooved (Carbon Steel)
NOTE:
Failure to maintain the water quality according to the requirements of the multi-metal
systems water quality standards can void the heat exchanger warranty.
