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.
Min
straight
Length
ft
(m)
Through the Wall
1 85
(25.9)
10
(3.1)
Through the Wall
2 80
(24.4)
10
(3.1)
Through the Wall
3 75
(22.9)
10
(3.1)
Through the Wall
4 70
(21.3)
10
(3.1)
Through the Wall
5 65
(19.8)
10
(3.1)
Through the Roof
0 90
(27.4)
15
(4.6)
Through the Roof
1 85
(25.9)
15
(4.6)
Through the Roof
2 80
(24.4)
15
(4.6)
Through the Roof
3 75
(22.9)
15
(4.6)
Through the Roof
4 70
(21.3)
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.
Internet Version for Reference Only
