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Installer's
Guide
)OWNWARD
VENTING
@
"urnace may be in vertical
or horizontal
configuration.
DOWNWARD VENT
{_
LENGTH IS LIMITED
|
r
1"_
TO A MAXIMUM OF 15
|
_
/
40 Inch
SEE
__ Upflow or
NOTES
Downflow
6" Min.
All horizontal
pipes
must
be supported
at a maximum
of 3 foot
intervals
NOTES:
A) Condensate trap for vent pipe must be a minimum of 6
inches in height.
B) Condensate
trap for vent and inlet pipe must be connected
into a condensate drain pump; an open or vented drain; or
it can be connected
to the outlet hose of the furnace's
condensate
trap. Outdoor draining
of the furnace
and coil
condensate
is permissible
if allowed by local codes.
Caution should be taken to prevent drains from freezing
or
causing slippery conditions
that could lead to personal
injury. Excessive draining of condensate
may cause
saturated ground conditions
that may result in damage to
plants.
C) The condensate
trap should be primed at initial start up
prior to heating season operation.
VENTING
THROUGH
THE ROOF
When
penetrating
roof with
a 2" PVC vent
pipe,
a 2" electrical
conduit
flashing
may
be used
for a weather
tight
seal.
Lubricate
flexible
seal on flashing
befl)re
PVC
pipe
is pushed
through
the seal.
(Field
Supplied)
NOTE:
No vent cap as shown in Figure 35 is the preferred method
for vertical vent termination in extremely cold climates.
In extreme climate conditions, insulate the exposed pipe
above the roof line with Armaflex type insulation.
VENTING ROUTED THROUGH A MASONRY CHIMNEY
VENT FITTING
MATERIAL-
STAINLESS
STEEL
Gas and
liquid
tight
single
wall
metal
vent
fitting,
designed
for resistance
to corrosive
flue condensate
such
as Type
29-4C
MUST
be used throughout.
These
fittings
and
fitting
accessories
are to be supplied
locally.
DIRECTION OF STAINLESS STEEL FITTING
All stainless
steel fitting must
be installed
with male end
towards
the furnace.
All horizontal
stainless
steel
sections
must
be positioned
with
the seam
on top.
®
®
VENT
MAINTAIN
12 IN.
(18 IN. FOR CANADA)
ABOVE
HIGHEST
ANTICIPATED
SNOW
LEVEL.
MAXIMUM
OF
24 IN. ABOVE
ROOF.
BAYAIR30AVENTA
®
MAINTAIN
12 IN,
VENT
(18 IN, FOR CANADA)
REMOVE
RIBS
_
MINIMUM
CLEARANCE
FROMCAP
_
[
ABOVE HIGHEST
ANTICIPATED
SNOW
COMBUSTION
LEVEL,
MAXIMUM
OF
AIR
24 IN, ABOVE ROOF
ROOF BOOT
(FIELD SUPPLIED)
(FIELD SUPPLIED)
ELBOW
(FIELD SUPPLIED)
COMBUSTION
All long horizontal
sections
must
be supported
to prevent
sagging.
All pipe joints
must
be fastened
and
sealed
to prevent
escape
of combustion
products
into the building.
20
18-CD19D6-27
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