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i.,,,,_t_
12" MIN
VENT PIPE
VENT PIPE
HORIZONTAL
TO ROOF
HORIZONTAL
TO SIDEWALL
F
VENT PIPE
12" MIN
VENT PIPE
VERTICALTO
ROOF
VERTICAL TO SIDEWALL
NOTE: A 12-1n. minimum offset pipe section is recommended
with
short (5 to 8 ft) vent systems. This recommendation
is to reduce
excessive condensate
droplets from exiting the vent pipe.
Fig. 38--Short
Vent (8 to 8 Ft) System
A96189
EXAMPLE:
An 080-12 size furnace located in Indianapolis,
elevation
650 ft above sea level, could be installed in an application
requiring 3 elbows and 32 ft of vent pipe Table 8 indicates
this application would allow a 2-in. diameter vent pipe. At
0°2000 k elevation, 2-in. pipe is good fbr up to 35 ft with
3 elbows. If same installation were in Albuquerque, eleva-
tion 5250 ft above sea level installation would require 2° 1/2
in. vent pipe. At 500I- to 6000-_ elevation, 2-in. pipe is
allowed for up to 23 f_ with 3 elbows, but 2-!/2 in. pipe can
be used for up to 70 ft with 3 elbows
Install vent pipe as _bllows:
l. Determine location of vent pipe connection to inducer housing
as shown in Fig 34 fbr application
2. Reposition
elastomeric (rubber) inducer housing oudet cap
and clamp to appropriate unused inducer housing connection
Tighten clamp.
--€
___>
34
1
UNIT
DAMAGE
HAZARD
Failure
to follow
this caution
may result
in unit component
damage.
Inducer
housing
outlet cap must
be installed
and thlly seated
against
inducer
housing.
Clamp
must be tightened
to prevent
any condensate
leakage.
3, Install
pipe support
(factowosupplied
in loose parts
bag) into
selected
furnace
casing vent pipe hole, Pipe support
shoutd be
positioned
at bottom
of casing
hole
(ARBON
MONOXIDE
POISONING
AND [NIT
DAMAGE
HAZARD
Failure
to fPllow
this warning
could
result in personal
injury
or death and unit damage
Vent pipe must be installed
and fully seated
against
inducer
housing
internal
stop. Clamp must be tightened
to prevent
any
condensate
leakage.
NOTE:
A 2=in. diameter
pipe must
be used within
the furnace
casing
Make all pipe diameter
transitions
outside
[:urnace casing.
4. Be certain
that mating
surfaces
of inducer
housing
connection
elastomeric
coupling,
and 2-in
diameter
vent pipe are clean
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