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22 18-CD19D6-32
Installer’s Guide
NOTE: VENT AND INLET MUST BE SUPPORTED
AT A MAXIMUM OF 3' INTERVALS
4
0" UPFLOW OR
DOWNFLOW MODELS
SEE VENTING TABLE
OUTSIDE
WALL
NOTE: ANY FITTINGS PASSING
THROUGH AN UNHEATED SPACE
MUST BE INSULATED.
FIRST SUPPORT SHOULD BE AS
CLOSE TO FURNACE CONNECTION
AS POSSIBLE.
UPWARD PITCH -- 1/4" PER FOOT
STRAPS OR OTHER SUITABLE SUPPORTS
AT MAXIMUM OF 3'-0" INTERVALS
COMBUSTION
AIR INLET
USE ONLY
APPROVED
TERMINATIO
N
TEE
RAIN CAP
COMBUSTION AIR
STRAP
(FIELD SUPPLIED)
COMBUSTION
AIR
VENT
ELBOW
(FIELD
SUPPLIED)
VENT
1" + 1/2"
BAYAIR30AVENTA
3" PIPING
2", 2-1/2"
or 3" PIPING
REDUCING
COUPLING,
FIELD SUPPLIED
IF NEEDED
SEAL ALL
WALL CAVITIES
BAYVENT200B
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