18-CD19D5-10 17
Installer’s Guide
18" MIN.
RIDGE
NOTE:
MINIMUM OF 12" ABOVE EXPECTED
SNOW ACCUMULATION.
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 before PVC pipe is pushed through the
seal. (Field Supplied)
NOTE:
Vertical vent termination can be done by:
1. Stainless steel vent cap Figure 24 or
2. Two (2) 90° elbows as shown in Figure 24.
3. No vent cap as shown in Figure 25 (preferred method
for extremely cold climates.)
In extreme climate conditions, insulate the exposed pipe above
roof line with Armaflex type insulation.
VENTING THROUGH ROOF
SECURE STAINLESS STEEL
VENT CAP TO COUPLING WITH
THREE STAINLESS STEEL
SCREWS (CLEARANCE HOLES
DRILLED THROUGH COUPLING
FOR SCREWS MUST BE LARGER
THAN SCREW DIAMETER)
STAINLESS STEEL VENT CAP
COUPLING (PLASTIC VENTING)
VENTING (FLUE PIPE)
STORM COLLAR
ADJUSTABLE ROOF FLASHING
Used with type 29-4C stainless steel
optional on 3" PVC pipe only.
f
90˚ ELBOW
3" MIN.
MIN. 12"
CLEARANCE
ABOVE SNOW
ACCUMULATION
g
h
j
GALVANIZED FIRESTOP SHOULD
BE FABRICATED WITH 3-7/8" DIA.
HOLE FOR SUPPORT FLANGE
(12" x 12" PANEL OR 12" DIA MIN.)
VENTING THROUGH CEILING
CEILING
SUPPORT
FLANGE
FLUE PIPE
COUPLING
SEAL BETWEEN FLANGE, PIPE,
COUPLING AND METAL PANEL
WITH HI TEMP RTV SILICONE SEALANT
CLEARANCE ( 0" ACCEPTABLE FOR PVC VENT PIPE )
( 1" ACCEPTABLE FOR TYPE 29-4C STAINLESS STEEL VENT PIPE )
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