HTP PHE199-119 - Manual (Page 29)

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LP-314 REV. 3.24.14
A. GENERAL
This appliance is certified as a “Category IV” appliance, and requires a special venting system. The vent system will operate with a
positive pressure in the pipe. Exhaust gases must be piped directly outdoors using the vent materials and rules outlined in these
instructions. Do not connect vent connectors serving appliances vented by natural draft into any portion of mechanical draft systems
operating under positive pressure. Follow the venting instructions below carefully. Failure to do so will result in substantial property
damage, severe personal injury, or death.
1. Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility
companies which pertain to this type of water heating equipment.
2. Install the 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.
3. This water heater must be vented with materials, components, and systems listed and approved for Category IV appliances.
Exhaust vent and intake pipes are to be piped separately. This appliance cannot share a common exhaust or intake with multiple
appliances. Failure to follow this instruction will result in substantial property damage, severe personal injury, or death.
NOTE: To avoid contamination often contained in indoor air, it is best to pipe all intake combustion air directly to the outdoors.
NOTE: If exhaust vent pipe system passes through an unheated space, such as an alcove or attic, the space must be heated or the
pipe must be insulated. The insulation must have an R value sufficient to prevent freezing of the condensate.
Improper seating of vent pipe gaskets can cause eventual gasket failure and exhaust gas leakage. Ensure the exhaust vent pipe is
properly beveled and seated before insertion into the flue adapter. Failure to do so could result in property damage, severe personal
injury, or death.
Due to the extreme flammability of most glues, cements, solvents, and primers used to join plastic exhaust vent and intake pipes,
explosive solvent vapors must be cleared from all vent piping before start-up. Avoid using excess cement or primer, as this may pool in
the vent pipes. Vent assemblies should be allowed to cure for a period of at least 8 hours before powering a connected appliance.
Failure to follow these instructions wil
l result in substantial property damage, severe personal injury, or death. It is the installers’
responsibility to understand the hazards associated with explosive solvents and take the necessary precautions to avoid these risks.
NOTE: The use of double-wall vent or insulated material for the combustion air inlet pipe is recommended in cold climates to prevent
the condensation of airborne moisture in the incoming combustion air.
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE
APPROVED EXHAUST VENT AND INTAKE PIPE MATERIAL
Item Material
Standards for Installation in:
United States Canada
Exhaust vent or Intake
pipe and fittings
PVC schedule 40/80 ANSI/ASTM D1785 PP, CPVC, and PVC venting must
be ULC-S636 Certified. IPEX is an
approved manufacturer in Canada,
supplying vent material listed to
ULC-S636.
PVC-DWV* ANSI/ASTM D2665
CPVC schedule 40/80 ANSI/ASTM F441
Polypropylene ULCS636
Stainless Steel AL29-4C
Certified for Category IV and
direct vent appliance venting Certified for Category IV and direct
vent appliance venting
Pipe cement/primer
PVC ANSI/ASTM D2564 IPEX System 636 Cements &
Primers CPVC ANSI/ASTM F493
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