Direct Vent, Venting And Air Intake Through A Roof - Slant/Fin B-120A Installation And Operating Instructions Manual

Bobcat Models B-120A and B-200A
B. DIRECT VENT - VENTING AND AIR INTAKE
THROUGH A ROOF
Figure 14 shows typical vertical venting. The vent pipe must
pass through the ceiling, floor and the roof vertically through
a 152mm (6") minimum diameter cutout. A fire stop is
required for each ceiling and floor penetration. For roof
passage an appropriate UL listed roof flashing must be used.
The vertical vent piping must terminate with a screened
straight termination. The air intake termination should be a
screened 180° elbow facing down. The air intake opening
must be at least 305mm (1 foot) below the vent opening.
BOBCAT MODELS B-120A and B-200A - DIRECT VENT, VENTING AND AIR INTAKE
All joints must be liquid and pressure tight. Use 3" dia. Certified PVC or CPVC Venting or U/L listed single wall 3" dia.
Figure 14. Direct vent, venting and air intake through a roof.
** Definition of Snow Line: Knowledge of local conditions will reveal the maximum height that repeated snowfalls accumulate to.
The height should be used as the SNOW LINE.
* AL 29-4C IS A REGISTERED TRADEMARK OF ALLEGHENY LUDLUM CORP.
THROUGH A ROOF
AL29-4C S.S.*. venting materials (See page 7).
STRAIGHT TERMINATION
WITH SCREEN
3.05m
(10 FT)
MIN.
FIRESTOP AND
SUPPORT
51mm
(2")MIN.
SLOPE UP 20mm/m (1/4
IN PER FOOT) MIN.
3" DIA. CERTIFIED
PVC OR CPVC
VENTING OR
STAINLESS STEEL
VENTING
MATERIAL FOR
VENT
For Certified PVC or CPVC Venting or PVC/CPVC air intake
pipe, follow the proper assembly practices specified on page
8, and venting system restrictions specified on page 8 of this
manual. For stainless steel venting systems, follow the vent
manufac turer's instructions and the restrictions specified on
page 8 of this manual.
FLASHING AND
STORM COLLAR
AIR INTAKE 180° ELBOW WITH SCREEN
305mm (1 FT) MIN.
305mm (1 FT) MIN.
FIRESTOP AND
3" DIA. PVD/CPVC
OR STAINLESS
STEEL PIPE FOR
AIR INTAKE
PIPE
SUPPORT
SUPPORT
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