Bradford White M-1-40S6BN Installation And Operating Instruction Manual page 12

Internet Version for Reference Only
Venting (Part I) continued-
TABLE 2 -VENT CONNECTOR LENGTHS
FOR 4" (10.2 cm) DIAMETER VENT PIPE
Terminating
# of 90°
Elbows (excl.
vent term.)
Through the Wall 1
Through the Wall 2
Through the Wall 3
Through the Wall 4
Through the Wall 5
Through the Roof 0
Through the Roof 1
Through the Roof 2
Through the Roof 3
Through the Roof 4
NOTE: When using 4" (10.2 cm) vent pipe, use a 4" (10.1 cm) to 3" (7.6
cm) reducer and exit the building wall with 3" (7.6 cm) vent pipe using the
3" (7.6 cm) 90° vent terminal supplied. Two 45° elbows are equivalent to
one 90° elbow.
CONNECTION TO 3" (7.6 CM)
VENT PIPE
IMPORTANT
All of the Venting connections must be leak checked with a soap and
water solution upon initial start up of the water heater. Any leaks must
be repaired before continuing operation of the water heater.
Maximum straight
Length ft (m)
48, 65 gal.
85 (25.9) 10 (3.1)
80 (24.4) 10 (3.1)
75 (22.9) 10 (3.1)
70 (21.3) 10 (3.1)
65 (19.8) 10 (3.1)
90 (27.4) 15 (4.6)
85 (25.9) 15 (4.6)
80 (24.4) 15 (4.6)
75 (22.9) 15 (4.6)
70 (21.3) 15 (4.6)
CONNECTION TO A 3" (7.6 CM) TO
4" (10.2 CM) REDUCER
Figure 2
12
Min
straight
Length
ft (m)