Patterson-Kelley P-K STORM ST-8000 Installation And Owner's Manual page 50

®
P-K STORM Boiler Model
ST-2500, ST-3000, ST-3500,
ST-4000
ST-5000, ST-6000, ST-8000
ST-2500, ST-3000, ST-3500,
ST-4000
ST-5000, ST-6000, ST-8000
If the combustion air intake ductwork and the exhaust vent terminate on the same wall of
NOTE:
the building, they must utilize the same type of termination fitting.
Patterson-Kelley recommends including a motorized combustion air damper in each
NOTE:
appliance's air intake ductwork. Refer to
NOTE: ST-2500-ST-4000: Total combined vent pressure not to exceed 0.44" W.C.
ST-5000-ST-8000: Total combined vent pressure not to exceed 1.0" W.C.
Revised: February 2, 2024
Released: February 2, 2024
Maximum Allowable
Flue Vent Category
through Combustion
II
II
IV
IV
3.4.3 below for
 Patterson-Kelley 2024
All Rights Reserved.
P-K Storm
Technical Service 1.877.728.5351
Pressure Drop
Allowable Vent Pressure
Air Ductwork
0.22" W.C.
0.5" W.C.
+0.01" W.C to +0.44"
0.22" W.C.
0.5" W.C. +0.01" W.C to +1.0" W.C.
more information.
2691000403 P-K Storm ST2500-ST8000
Installation and Owners Manual Rev G.docx
®
Gas Fired Boiler
-0.01" W.C. to
-0.05" W.C.
-0.01" W.C. to
-0.05" W.C.
W.C.
Page 39