26
18-CD30D1-20-EN
Installer’s Guide
3'
0" WITH THE FIRST SUPPORT AS
CLOSE TO THE FURNACE AS POSSIBLE.
IN
-
DUCED DRAFT BLOWER, HOUSING,
AND
FURNACE MUST NOT SUPPORT
THE
WEIGHT OF THE FLUE PIPE.
CONCENTRIC VENT
ROOF TOP APPLICATION
BAYAIR30AVENTA (VERTICAL)
CONCENTRIC VENT
ROOF INSTALLATION
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, verti-
cal vent termination kits must
meet ULC-S636.
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
MAINTAIN 12 IN.
(18 IN. FOR CANADA)
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL. MAXIMUM OF
24 IN. ABOVE ROOF.
VENT
COMBUSTION
AIR
b
n
m
v
SUPPORT HORIZONTAL PIPE EVER
Y