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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 SONIC
Boiler Model
SC-1500, SC-2000,
SC-3000, SC-4000
SC-1500, SC-2000,
SC-3000, SC-4000
SC-1500, SC-2000,
SC-3000, SC-4000
Vent Termination
For interior clearance requirements, refer to 2.5.5.
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: June 2, 2017
Released: June 2, 2017
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.
HARSCO Industrial, Patterson-Kelley 2017
All Rights Reserved.
Technical Service 1.877.728.5351
Stack Temperature
220 °F (gross)
220 °F (gross)
220 °F (gross)
The vent shall extend at least three (3) feet
1004905978 P-K SONIC NURO Installation and
®
P-K SONIC
Gas Fired Boiler
CO
2
Natural Gas
Propane Gas
9.2%
10.4%
9.2%
10.4%
9.2%
10.4%
Owners Manual (Rev F Jun-2017).docx
CO
2
Page 28
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