Bradford White M-4-XRTW65T6FSX - Manual (Page 12)

12
Venting continued-
2. In order to prevent condensate from draining back into the blower (vertical or
horizontal runs), an optional condensate kit is available as a service part
(Condensate kit, p/n 239-45875-00). A factory supplied exhaust adapter with
drain outlet mounts directly to the blower outlet and is secured with two hose
clamps, one to the blower and the other to the vent pipe. Tubing is provided to
drain any accumulated condensate away from the water heater and to a
suitable drain. The kit comes complete with instructions for proper installation.
Venting Specifications for:
48 Gallon (181.6 L)
65 Gallon (246.0 L)
This water heater is a power vented appliance and is designed to vent its
products of combustion through 3” (7.6 cm) or 4” (10.2 cm) diameter vent pipe
to the outdoors. This water heater may be either vented horizontally through
the wall or vertically through the roof. Use a 3” (7.6 cm) to 4” (10.2 cm) reducer
to connect to the vent outlet when using 4” (10.2 cm) vent pipe. Apply the
proper cement at the joint locations. Table 1 lists the maximum vent lengths for
this water heater using 3” (7.6 cm) vent pipe. If possible, locate the water
heater so that the venting length and number of elbows are kept to the
minimum distance necessary to reach the outside. If the installation requires
venting lengths that exceed the lengths listed for 3” (7.6 cm) vent pipe in Table
1, then use 4” (10.2 cm) vent pipe for the vent connector.
Table 2 lists the venting distances allowed with 4” (10.2 cm) diameter vent pipe.
When venting with 4” (10.2 cm) vent pipe, use a 4” (10.2 cm) to 3” (7.6 cm)
reducer to exit through the building wall with 3” (7.6 cm) vent pipe. Use the 3”
(7.6 cm) vent terminal supplied with the water heater to terminate on the
outside of the building. If the length of 3” (7.6 cm) vent pipe needed to go
through the wall is greater than 14” (35.5 cm), use 4” (10.2 cm) to go through
the wall and reduce to 3” (7.6 cm) vent pipe immediately after exiting the
outside wall. Refer to the venting illustrations on the following pages. Make
sure the vent pipe terminal elbow fitting is at least 1” (2.5 cm) away from the
edge of the wall.
TABLE 1 - VENT CONNECTOR LENGTHS
FOR 3” (7.6 cm) DIAMETER VENT PIPE
Terminating # of
Elbows
Maximum straight
Length ft (m)
Minimum straight
Length
ft (m) 48, 65 gal.
Through the Wall 1 45 (13.7) 2 (.6)
Through the Wall 2 40 (12.2) 2 (.6)
Through the Wall 3 35 (10.7) 2 (.6)
Through the Wall 4 30 (9.2) 2 (.6)
Through the Roof 0 50 (15.2) 7 (2.1)
Through the Roof 1 45 (13.7) 7 (2.1)
Through the Roof 2 40 (12.2) 7 (2.1)
Through the Roof 3 35 (10.7) 7 (2.1)