P-K Storm
TM
Gas Fired Boiler
Technical Service 1.877.728.5351
Revised: October 2, 2019
Released: October 2, 2019
Patterson-Kelley 2019
All Rights Reserved.
2691000099 P-K Storm Installation and Owners
Manual.docx
Page 9
Venting Materials for Flue/Exhaust Systems
The P-K STORM boilers are dual certified as a
Category II
and
Category IV
appliances, which vents with a temperature that is likely to
cause condensation in the vent. Therefore, any venting system used
with the P-K STORM
™
boiler must comply with the requirements for
either Category II or Category IV
venting systems as specified in the
latest edition of NFPA 54/ANSI Z223.1 in the
US or the latest edition of
CAN/CSA B-149.1 in Canada.
CPVC Venting
US:
CPVC pipe conforming to ASTM F441. Sch. 80 fittings
conforming to ASTM F439. Joints are to be sealed with
solvent conforming ASTM 493.
Canada:
CPVC Pipe, Fitting and Sealant listed and
labeled to ULC S-636
Standard for Type BH Venting
Systems.
Polypropylene Venting
US and Canada:
Polypropylene such as InnoFlue
®
from
Centrotherm
or PolyPro
®
from DuraVent or Z-DENS from Z-
Flex
®
or other listed manufacturers. When used, the same
manufacturer's material must be used throughout the
system. It is not permissible to use material from different
manufacturers within the same system.
As per ANSI Z21.13b * CSA 4.9b:
•
The use of cellular core PVC, CPVC, and Radel
®
as venting materials is
prohibited.
•
The use of external insulation on plastic vent pipe is prohibited.
Acceptable Venting Materials
Model
Country
AL29-4C
316L SS
PVC
CPVC
POLYPROPYLENE
ST-1250 US
Yes
Yes
No
Yes
Note 2
ST-1500 US
Yes
Yes
No
Yes
Note 2
ST-1750
US
Yes
Yes
No
Yes
Note 2
ST-2000
US
Yes
Yes
No
Yes
Note 2
ST-1250 Canada Yes
Yes
No
Note 1 Note 1
ST-1500 Canada Yes
Yes
No
Note 1 Note 1
ST-1750
Canada
Yes
Yes
No
Note 1
Note 1
ST-2000
Canada
Yes
Yes
No
Note 1
Note 1
NOTE 1:
When this material is used for venting, it must be listed to ULC-S636.
NOTE 2:
When this material is used for venting, it must be listed to either UL-
1738 or ULC-S636 (depending on the local requirements). Consult the local
boiler codes for more information.
The venting materials listed are
intended for the venting of gas
burning appliances only. Do
not use these venting materials
for venting liquid or solid fuel
(such as oil, kerosene, wood,
or coal) appliances.
Maintain clearances to
combustibles as listed in the
vent manufacturer’s
installation instructions or as
set forth in the codes and
standards listed in this section.
Do not use these vent pipes for
incinerators of any sort!
This boiler is not certified for
use with PVC venting. Use of
PVC venting may result in vent
failure and possible serious
injury or death.
