18-CD35D1-1 21
INSTALLER’S GUIDE
VENTING 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.
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.
NOTE:
Both venting methods shown in Figure 39 and 41
must also have the combustion air inlet installed,
meeting dimension requirements of Figure 35.
REMOVE RIBS
FROM CAP
COMBUSTION
AIR
ROOF FLASHING BOOT
(FIELD SUPPLIED)
COMBUSTION
AIR
VENT
ELBOW
(FIELD SUPPLIED)
MAINTAIN 12 IN.
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 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.
DOWNWARD VENT
LENGTH IS LIMITED
TO A MAXIMUM OF
15 EQUIVALENT
FEET.
For Canadian Applications Only: IPEX 196006 may be used for
vertical vent terminations. Maintain 18 in. minimum clearance
above highest anticipated snow level or grade whichever is
greater.
12 INCHES MIN. CLEARANCE MUST BE
MAINTAINED ABOVE HIGHEST
ANTICIPATED SNOW LEVEL.
MAXIMUM NOT TO EXCEED
24 INCHES ABOVE ROOF.
MAINTAIN 12 IN.
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL. MAXIMUM OF
24 IN. ABOVE ROOF.
VENT
COMBUSTION
AIR
n
BAYAIR30AVENTA
For Canadian Applications Only: IPEX
196006 may be used for vertical vent
terminations. Maintain 18 in. minimum
clearance above highest anticipated
snow level or grade whichever is greater.
b
