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Certi d PVC/CPVC Vent Termination Op ons (conti ued)
Twin Pipe (PVC/CPVC) Termina ons
PVC/CPVC Sidewall (Tee and Snorkel) Termina ons:
Locate the vent and intake air terminati n using the
following guidelines:
1.
The total length of the vent or intake air piping must
not exceed the limits given in maximum equivalent
vent length tables. The equivalent length for 90°
elbows and terminati n associated with the respec ve
vent and intake air piping arrangement MUST be
subtracted from total length listed in maximum
equivalent vent tables.
2.
Specific to Side Wall Tee Terminati n, the vent and
intake air piping must terminate at the outside surface
of the outer wall, minimum 1" between wall, tee, and
elbow socket ends.
3.
Terminati n must be installed at least 12" (30.5 cm),
above grade or anticipated snow level.
4.
Refer to "Vent Terminati n Clearances" table for
recommended exhaust/combustio terminal posi on.
NOTE
If the vent is terminated on a sidewall that is subject to high
winds it is recommended to terminate the vent using a tee.
A tee provides the best protec on against wind.
5.
The intake air pipe must terminate away from the vent
terminati n. Both vent and air intake pipe terminati ns
must be installed 12" (30.5 cm) minimum above grade
or highest anti ipated snow level and as shown in
fig res to the right.
NOTICE
The informati n and figures depic ng method of
terminati g the vent and combustio air intake pipes are
directly related to PVC/CPVC vent systems. When uti izing a
method other than a PVC/CPVC vent system there may be
some variatio s. Consult the respec ve vent manufacturer
or the water heater manual for recommendati ns and
clarificati
s.
NOTICE
Slope horizontal exhaust piping downward toward the
water heater a minimum of 1/4 inch per foot. DO NOT slope
combustio air piping down towards water heater. Dispose
of condensate per local codes.
32
12"
Exhaust Vent
Combus on Air
12" min
12" above
grade or
an cipated
snow level
Sidewall Vent and Combus on Air Piping with
12" min
12" above
grade or
an cipated
snow level
Sidewall Vent and Combus on Air Piping with
(Picture shown is for illustra on purposes only; listed
equivalent length is based on worst case scenario of 3 X 90°
Elbows)
KBP Series Manual
Exhaust Vent
1" min.
between
wall &
socket end
Tee Termina on
Exhaust Vent
Wall
Combus on Air
Snorkel Termina on
12" min
Combus on Air
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