Harsco Industrial SC-2000 Installation & Owner's Manual page 19

3.5.1.1 Gas Vent Categories
Several codes and standards have categorized appliances in accordance with the flue gas temperature and
pressure produced by the appliance. The applicable categories are defined as follows:
Category II: An appliance that operates with a non-positive vent static pressure and with a vent
•
temperature that may cause excessive condensate production in the vent.
Category IV: An appliance that operates with a positive vent static pressure and with a vent temperature
•
that may cause excessive condensate production in the vent.
Direct Vent: An appliance that is constructed and installed so that all air for combustion is derived directly
•
from outdoors and all flue gases are discharged to the outdoors.
3.5.1.2 Venting Materials for Flue/Exhaust Systems
The boilers are dual certified as a Category II and Category
P-K SONIC™
IV appliances, which vents with a temperature that is likely to cause
condensation in the vent. Therefore, any venting system used with the
boiler must comply with the requirements for either Category II
K SONIC™
or Category IV venting systems as specified in the latest edition of
in the US or the latest edition of
54/ANSI Z223.1
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 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-2012 * CSA 4.9b-2012:
•
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
Table 3.5.1.2
Model Country AL29-4C 316L SS PVC CPVC
SC-2000 US Yes
SC-3000 US Yes
SC-4000 US Yes
SC-2000 Canada Yes
SC-3000 Canada Yes
SC-4000 Canada Yes
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 UL-1738.
Harsco Industrial, Patterson-Kelley Technical Service 1.877.728.5351
CAN/CSA B-149.1
Yes No Yes
Yes No Yes
Yes No Yes
Yes No Note 1
Yes No Note 1
Yes No Note 1
The venting materials listed are
intended for the venting of gas
burning appliances only. Do not
P-
use these venting materials for
NFPA venting liquid or solid fuel (such as
in
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.
POLYPROPYLENE
Note 2
Note 2
Note 2
Note 1
Note 1
Note 1
19
Gas Fired Boiler