Bradford White M-2-TW-75T6SX - Manual (Page 12)

12
Venting (Part I) continued-
TABLE 2 -VENT CONNECTOR LENGTHS
FOR 4” (10.2 cm) DIAMETER VENT PIPE
Maximum straight
Length ft (m)
Terminating # of 90
°
Elbows (excl.
vent term.) 48, 65 gal. 75 gal.
Min
straight
Length
ft (m)
Through the Wall 1 85 (25.9) 75 (22.9) 10 (3.1)
Through the Wall 2 80 (24.4) 70 (21.3) 10 (3.1)
Through the Wall 3 75 (22.9) 65 (19.8) 10 (3.1)
Through the Wall 4 70 (21.3) 60 (18.3) 10 (3.1)
Through the Wall 5 65 (19.8) 55 (16.7) 10 (3.1)
Through the Roof 0 90 (27.4) 80 (24.4) 15 (4.6)
Through the Roof 1 85 (25.9) 75 (22.9) 15 (4.6)
Through the Roof 2 80 (24.4) 70 (21.3) 15 (4.6)
Through the Roof 3 75 (22.9) 65 (19.8) 15 (4.6)
Through the Roof 4 70 (21.3) 60 (18.3) 15 (4.6)
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 A 3” (7.6 CM) TO
4” (10.2 CM) REDUCER
CONNECTION TO 3” (7.6 CM)
VENT PIPE
Figure 2
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.