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Appendix E – Installation and Quick Reference
Fuel/Gas Supply
Refer to
3.7
for information on proper sizing of the gas supply piping. Undersized gas piping
with too much pressure drop will negatively impact the boiler's performance.
Install a lock-up type gas regulator to supply an appropriate gas pressure as described below:
Natural Gas
Minimum Inlet Pressure = 4.0"
Maximum Inlet Pressure = 14.0"
NOTE: Patterson-Kelley recommends installing an individual lock-up type gas regulator in the
gas supply piping to each boiler. For installations where one master lock-up type gas pressure
regulator will service multiple boilers, Patterson-Kelley recommends contacting the local
regulator representative for application assistance specifying the appropriate lock-up type
regulator and gas pipe sizing.
Electrical/Power Supply
Carefully inspect the boiler's nameplate labels which describe the power supply requirements.
Provide an appropriate power feed to the boiler with overcurrent protection:
Boiler Model
ST-2500, ST-3000,
ST-3500, ST-4000,
ST-5000, ST-6000
Prior to startup, carefully check all electrical connections for tightness as connections can come
lose during shipping.
Exhaust Venting
The
P-K STORM
operating with slightly negative to slightly positive exhaust pressure. It is critical to ensure the
flue venting material is suitable for use with the boiler.
N
: For Category II installations, ensure the flue venting system is designed to maintain a
OTE
slightly negative exhaust pressure between -0.01" W.C. and -0.05" W.C.
N
: For Category IV installations, ensure the flue venting system is designed to maintain a
OTE
slightly positive exhaust pressure which MUST BE in the following ranges:
ST-2500 – ST-4000: +0.01" W.C. and +0.22" W.C. (Direct Vent / Sealed Combustion)
ST-2500 – ST-4000: +0.01" W.C. and +0.4" W.C. (Exhaust Only)
ST-5000 & ST-6000: +0.01" W.C. and +0.5" W.C. (Direct Vent / Sealed Combustion)
ST-5000 & ST-6000: +0.01" W.C. and +1.0" W.C. (Exhaust Only)
Revised: December 8, 2021
Released: December 8, 2021
.
W.C
W.C.
208-240VAC/440-480, three phase, 60Hz sized for 20
Amps.
boilers are dual-certified as Category II & Category IV appliances, capable of
Patterson-Kelley 2021
All Rights Reserved.
P-K Storm
Technical Service 1.877.728.5351
Power Supply Requirements
2691000273 P-K Storm ST2500-ST6000
Installation and Owners Manual Rev C.docx
TM
Gas Fired Boiler
Page 119
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