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B. GENERAL
1. Install the boiler venting system in accordance with these instructions and with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, CAN/CGA B149, and/or applicable provisions of local building codes.
2. This boiler is a direct vent appliance and is listed as a Category IV appliance with Underwriters
Laboratories, Inc.
C. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE AIR VENT
Use only venting materials approved for use with Category IV appliances installed in accordance with the
National Fuel Code. The following materials are approved for use as vent pipe for this boiler. Failure to
use approved materials could result in substantial property damage, severe personal injury, or death.
D. REQUIREMENTS FOR INSTALLATION IN CANADA
1. Installations must be made with a vent pipe system certified to ULC-S636.
2. The first three (3) feet of vent pipe from the appliance flue outlet must be readily accessible for visual
inspection.
3. The components of the certified vent system must not be interchanged with other vent systems or
unlisted pipe / fittings.
Do not use cellular foam core pipe in any portion of the exhaust piping from this boiler. Use of foam core
pipe may result in substantial property damage, severe personal injury, or death.
Cellular foam core piping may be used on air inlet piping only.
APPROVED PLASTIC EXHAUST VENTING MATERIAL
STANDARDS FOR INSTALLATION IN:
Table 4 – Approved Plastic Exhaust Venting Material
APPROVED PLASTIC INTAKE VENTING MATERIAL
STANDARDS FOR INSTALLATION IN:
Table 5 – Approved Plastic Intake Venting Material
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