Patterson-Kelley STORM ST-2500, Installation & Owner'S Manual, Page: 20 / 101

P-K Storm TM Gas Fired Boiler
Technical Service 1.877.728.5351
Revised: June 26, 2020
Released: June 26, 2020
© Patterson-Kelley 2020
All Rights Reserved.
2691000273 P-K Storm ST2500-ST4000
Installation and Owners Manual Rev A.docx
Page 11
2.6 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.).
2.7 Water Quality Standard
The P-K STORM
™
boiler’s heat exchanger is made of stainless steel. 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
Appendix C
– Water Quality Standards Quality Standards for Hydronic Boilers in Multi-Metal Systems
, as this
applies to the warranty of your heat exchanger.
3 Installation
3.1 Overview
For site preparation follow the guidelines established in Section 2 . Section 3 details the installation
requirements for electrical connections, combustion air, and flue vent piping, hydronic piping, etc.
3.2 Appliance Connections
The table below summarizes the appliance connections to the P-K STORM
™
series boilers:
Boiler Model ST-2500 ST-3000 ST-3500 ST-4000
Power Requirement 208-240/3/60 VAC -or- 440-480/3/60 VAC
Air Intake Connection 12
”
Nominal Exhaust Vent
Connection
10” 12”
Condensate Drain 3/4" CPVC Pipe
Heat Exchanger Drain 3/4" NPT-F
Natural Gas Shutoff Valve 2
” NPT-F
HWR Connection 4
” Grooved (Carbon Steel)
HWS Connection 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.