Indoor Combustion Air; Vent / Air Pipe Terminations; Vertical Vent Termination - Bradford White FT Series Installation And Operation Instruction Manual

The FT Series 301 / 399 Heating Only Boiler
4.9

Indoor Combustion Air

Read and follow section 4.5.1 Guidelines first.
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 Z223.1/NFPA 54.
In Canada refer to 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
Maximum Input (BTU/H)
Indoor make up air is provided, a minimum
free area of 1 sq. inch. per 1,000 BTU/H
Table 7. Max BTU/H

4.10 Vent / Air Pipe Terminations

Vent Air Terminations:
After connecting terminals install vent screens on
both the vent and air inlet.
Two 3" vent screens are included with each unit.
Additional replacement screens or 4" vent screens
are available for purchase.
3" Vent Screen P/N - FT1730
4" Vent Screen P/N - 10-391 (1 bird screen per part number)

4.10.1 Vertical Vent Termination

• Direct Vent - Vertical Terminations
with Sloped Roof
Vent Screens are required
Short pipe shown is not required.
Included 3" PVC Screen fits coupler hub
size 3.5" ID.
FTHW301
301,000
301 in 17.5˝ (W) x 17.5˝ (H)
2
Page 25
FTHW399
399,000
399 20" (W) x 20" (H)
in
2