Vent Termination - Patterson-Kelley P-K STORM ST-1250 Installation & Owner's Manual

Vent Sizing
The vent must be sized in accordance with the ASHRAE Systems and Equipment handbook, Chapter
30 or according to the vent manufacturer's recommendations. When using manufactured venting
systems, consult your vent supplier for correct sizing and structural support requirements. See the
table below table for vent design parameters.
™
P-K STORM Boiler Model
ST-1250, ST-1500,
ST-1750, ST-2000
ST-1250, ST-1500,
ST-1750, ST-2000
ST-1250, ST-1500,
ST-1750, ST-2000

Vent Termination

For interior clearance requirements, refer to 2.6.5.
above the roof, or at least two (2) feet above the highest part of any structure within ten (10) feet
of the vent. This is illustrated in the following diagram.
Additionally, the boiler vent shall terminate at least 3 ft. above a forced air inlet located within 10 ft.
Revised: October 2, 2019
Released: October 2, 2019
Draft
Category II
-0.01" to -0.05" W.C.
Category IV
(Sealed Combustion)
+0.01" to +0.22" W.C.
Category IV
(Exhaust Only)
+0.01" to +0.4" W.C.
The vent shall extend at least three (3) feet
 Patterson-Kelley 2019
All Rights Reserved.
P-K Storm
Technical Service 1.877.728.5351
Stack Temperature
220 °F (gross)
220 °F (gross)
220 °F (gross)
2691000099 P-K Storm Installation and Owners
TM Gas Fired Boiler
CO
2
Natural Gas
8.5%
8.5%
8.5%
Manual.docx
Page 25