18-CD29D1-11
23
Installer’s Guide
VENTING THROUGH THE ROOF
When penetrating roof with a 2" PVC vent pipe, a 2" elec-
trical conduit flashing may be used for a weather tight
seal. Lubricate flexible seal on flashing before PVC pipe is
pushed through the seal. (Field Supplied)
NOTE:
No vent cap as shown in Figure 35 is the preferred meth-
od 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 lo-
cally.
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.
All long horizontal sections must be supported to prevent
sagging.
All pipe joints must be fastened and sealed to prevent es-
cape of combustion products into the building.
NOTE:
Both venting methods shown in Figure 39 & 41 must also
have the combustion air inlet installed - meeting dimen-
sion requirements of Figure 35.
b
MAINTAIN 12 IN.
(18 IN. FOR CANADA)
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL. MAXIMUM OF
24 IN. ABOVE ROOF.
VENT
COMBUSTION
AIR
n
BAYAIR30AVENTA
REMOVE RIBS
FROM CAP
COMBUSTION
AIR
ROOF FLASHING BOOT
(FIELD SUPPLIED)
COMBUSTION
AIR
VENT
ELBOW
(FIELD SUPPLIED)
MAINTAIN 12 IN.
(18 IN. FOR CANADA)
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL. MAXIMUM OF
24 IN. ABOVE ROOF
SUPPORT
(FIELD SUPPLIED)
VENT
m
6" Min.
40 Inch
Upflow or
Downflow
Furnace
Slope 1/4" per ft.
Slope 1/4" per ft.
All horizontal pipes must be supported
at a maximum of 3 foot intervals
DOWNWARD VENTING
Furnace may be in vertical or horizontal configuration.
v
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 out-
let hose of the furnace's condensate trap. Outdoor
draining of the furnace and coil condensate is per-
missible if allowed by local codes. Caution should
be taken to prevent drains from freezing or causing
slippery conditions that could lead to personal in-
jury. 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.
DOWNWARD VENT
LENGTH IS LIMITED
TO A MAXIMUM OF 15
EQUIVALENT FEET.
For Canadian applications, vertical vent
termination kits must meet ULC-S636.
12 INCHES MIN. CLEARANCE MUST BE
MAINTAINED ABOVE HIGHEST
ANTICIPATED SNOW LEVEL.
MAXIMUM NOT TO EXCEED
24 INCHES ABOVE ROOF.
For Canadian applications,
vertical vent termination kits
must meet ULC-S636.
Содержание ADH1B040A9241A
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