Required Clearances; Conventional Vent Systems Clearances; Direct Vent (Sealed Combustion) Systems Clearances - Harsco Industrial SC-1500 Owner's Manual

As per ANSI Z21.13b-2012 * CSA 4.9b-2012:
The use of cellular core PVC, CPVC and Radel as venting materials is prohibited.
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The use of external insulation on plastic vent pipe is prohibited.
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Model Country AL29-4C 316L SS PVC CPVC
SC-1500 US
SC-2000 US
SC-3000 US
SC-4000 US
SC-1500 Canada
SC-2000 Canada
SC-3000 Canada
SC-4000 Canada

2.4.6 Required Clearances

2.4.6.1 Conventional Vent Systems Clearances

The following termination clearance requirements are for conventional non direct vent installations:
The vent system shall terminate at least 3 ft. above a forced air inlet located within 10 ft. horizontally.
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The vent system shall terminate at least 4 ft . below, 4 ft. horizontally from or 1 ft. above any door,
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operable window or gravity inlet into any building. The bottom of the vent terminal shall be at least 12
in. above grade or highest expected snow line (if applicable).
Through the wall terminations shall not terminate over public walkways or over an area where
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condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of
regulators, relief valves or other equipment.

2.4.6.2 Direct Vent (Sealed Combustion) Systems Clearances

The vent terminal shall be located at least 12 in. from any air opening into a building. The bottom of
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the vent terminal shall be at least 12 in. above grade. Both the vent and air intake terminals must be
at least 12 in. above the highest expected snow line.
Through the wall terminations shall not terminate over public walkways or over an area where
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condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of
regulators, relief valves or other equipment.
When multiple direct vent appliances are adjacent, the exhaust must terminate at least 10 ft.
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horizontally or 3 ft. vertically from the air intake of another appliance.
Acceptable Venting Materials
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes No
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POLYPROPYLENE
Yes Note 2
Yes Note 2
Yes Note 2
Yes Note 2
Note 1 Note 1
Note 1 Note 1
Note 1 Note 1
Note 1 Note 1
TM
P-K SONIC Gas Fired Boiler
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.