DOWNWARD VENTING | b |
Furnace may be in vertical or horizontal configuration.
DOWNWARD VENT
LENGTH IS LIMITED
TO A MAXIMUM OF 15
EQUIVALENT FEET.
40 Inch
Upflow or Downflow Furnace
Slope 1/4" per ft.
Slope 1/4" per ft.
6" Min.
All horizontal pipes must be supported
at a maximum of 3 foot intervals
NOTES:
Installer’s Guide
NOTE:
Both venting methods shown in Figure 40 & 42 must also have the combustion air inlet installed - meeting dimension requirements of Figure 36.
n
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 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.
VENTING ROUTED THROUGH A MASONRY CHIMNEY VENT FITTING MATERIAL – STAINLESS STEEL
Gas and liquid tight single wall metal vent fitting, de- signed for resistance to corrosive flue condensate such as Type
m
MAINTAIN 12 IN.
(18 IN. FOR CANADA) MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF.
BAYAIR30AVENTA
VENT
COMBUSTION
AIR
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 posi- tioned with the seam on top.
All long horizontal sections must be supported to pre-
, VENT
REMOVE RIBS FROM CAP
COMBUSTION |
AIR |
ROOF FLASHING BOOT |
(FIELD SUPPLIED) |
MAINTAIN 12 IN.
(18 IN. FOR CANADA) MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF
vent sagging.
All pipe joints must be fastened and sealed to prevent escape of combustion products into the building.
SUPPORT
(FIELD SUPPLIED)
ELBOW
(FIELD SUPPLIED)
VENT |
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23 |
