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4.7.2
Indoor Combustion Air
1. Insert the termination end cap into the intake air duct.
2. Provide two openings to allow for circulation of
combustion air as specified by ANSI Z224.1/NFPA 54.
In Canada refer to CAN/CSA B-149.1
NOTE: The FT needs fresh air for safe operation and
must be installed so there are provisions for
adequate combustion and ventilation air.
Model
FTCF140
FTCF199
Maximum Input (BTU/H)
140,000
199,000
If indoor make up air is provided,
a minimum free area of 1 in
2
per
1,000 BTU/H
140 in
2
13 1/4"
(W) x 13 1/4" (H)
199 in
2
13 1/4"
(W) x 13 1/4" (H)
4.8
Vent / Air Pipe Termination
Shown is the FTCF
140
. The
inlet and outlet are reversed
on the FTCF
199
.
Read and Follow Section 4.3 Guidelines First.
Vertical Vent Termination
• Direct Vent - Vertical Terminations
with Sloped Roof
All Terminations:
• After connecting the terminals, install vent screens on both the vent and air inlet.
Two 3” vent screens are included with each unit. Additional replacement screens are available for purchase.
2” Vent Screen P/N - FT1508
3” Vent Screen P/N - FT1730
Vent Screens
are required
