Part 5 Venting; Intake Pipe And Exhaust Vent Guidelines - American Standard TCWH199S-AS Installation Start-Up Maintenance Parts

DANGER
WARNING
DO NOT use an electric damper, vent damper, or draft hood with this water heater.
DO NOT locate the exhaust vent or intake pipe terminations where exposed to prevailing winds.
The exhaust vent will produce moisture. Take precautions when determining exhaust vent termination.
Moisture may fall from the vent termination to the ground and turn to ice in freezing conditions. Moisture
or ice can produce a hazardous condition.
Exhaust condensation is acidic, and could deteriorate the surface below the exhaust vent termination. En-
sure this surface is in good repair (sealed, painted, etc.) to prevent deterioration.
Failure to follow these instructions could result in property damage, severe personal injury, or death.
A. INTAKE PIPE AND EXHAUST VENT GUIDELINES
1. Vent system must be installed in accordance with local codes, or, in absence of local codes, the National Fuel
Gas Code, ANSI Z223.1 / NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code.
2. For installation in Canada, installer supplied plastic vent piping must comply with CAN/CGA B149.1 and
be certified to the Standard for Type BH Gas Venting Systems, ULC-S636. Components of this listed system
must not be interchanged with other vent systems or unlisted pipes or fittings. All plastic components and
specified primers and glues must be from a single system manufacturer and must not be intermixed with
another system manufacturer's products. Clean and dry all applicable surfaces before applying cement.
3. This water heater is designed to be installed as a direct vent (sealed combustion) type. Combustion air must
be supplied directly from the outdoors to the burner, and the flue (exhaust) gases should be vented directly to
the outdoors through the wall or roof.
4. This water heater uses 2" or 3" diameter pipe for exhaust vent and intake pipe. It is important to ensure an
airtight seal from the water heater collar to the vent terminations. It is EXTREMELY IMPORTANT that the
maximum allowed combined venting lengths are not exceeded. See Table 9 for a list of Approved Vent Materials
and Table 10 for Approved Vent Lengths.
5. Do not install venting system components on the exterior of the building except as specifically required by
these instructions.
PART 5
Venting
Vent this water heater in accordance with these instructions. Failure to do so will
result in property damage, severe personal injury, or death.
DO NOT mix vent systems or materials unless specifically told to do so in this
manual.
DO NOT thermally insulate the exhaust vent or intake pipes.
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