Termination Requirements - Rheem 96P series Installation Instructions Manual

GENERAL VENTING REQUIREMENTS AND
Vent terminations for both Non-Direct and Direct-Vent in-
stallations must adhere to guidelines specified by the latest
edition of ANSI Z21.47 Gas-Fired Central Furnaces.
These are clearly detailed in Figure 21 for Non-Direct-Vent
installations and Figure 32 for Direct-Vent installations. In
addition to these requirements, the installation and venting
must also comply with the National Fuel Gas Code (U.S.)
and CSA-B149.1; Canadian Natural Gas and Propane In-
stallation Code (Canada) and the following requirements
must also be met:
NOTE: Screens of any kind on the inlet or exhaust pipes
are not permitted and will void the manufacturer's war-
ranty.
In addition to the requirements shown in Figure 21 for
Non-Direct venting and Figure 32 for Direct-Venting, the
vent must be installed with the following minimum clear-
ances:
1. The vent terminal shall have a specified minimum hori-
zontal clearance from electric meters, gas meters, reg-
ulators and relief equipment. See the National Fuel Gas
Code for specific distances or CSA B149.1 in Canada
as these distances may vary by location.
2. Locate the furnace combustion air inlet away from the
vent of any other gas or fuel-burning appliance or
clothes dryer to prevent recirculation of the flue gases
into the furnace combustion air inlet. For exact dis-
tances based on BTU of appliances refer to National
Fuel Gas Code or CSA B149.1 in Canada. The only ex-
ception to this requirement is the case of multiventing
two or more furnaces, which is covered in the section
on multiventing of these instructions.
In addition to the minimum clearances listed above and in
Figure 21 (Non-Direct Vent) and Figure 32 (Direct-Vent),
the vent location should also be governed by the following
guidelines.
1. Avoid terminating under any kind of patio or deck. How-
ever, if necessary, vent piping may be installed under a
deck as long as the termination(s) is (are) not under the
deck.
2. If installing the vent under a deck, insulate it to insure
that no condensate freezes and blocks the pipes.
3. Do not terminate in any area or behind any obstruction
that may allow the flue products to become stagnant
and/or re-circulate.
4. Do not locate on the side of a building with prevailing
winter winds. This will help prevent moisture from
freezing on the walls and overhangs (under eaves).
5. If extending vent through a brick or masonry surface, a
sleeve between the wall and venting is suggested to
protect against damage from thermal expansion and
contraction.
6. A corrosion-resistant sheet metal or plastic backing
plate on the wall behind the vent is suggested to pre-
vent exhaust gases and condensate from contacting
the wall.
7. Avoid locating too close to shrubs as condensate may
stunt growth or kill them.
GUIDELINES
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