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TABLE 3 -VENT CONNECTOR LENGTHS
FOR 4” (10.2 cm) DIAMETER PVC
Terminating # of 90° Elbows
(excluding vent
terminal)
Maximum
Length
Minimum
Length
Through the Wall 1 70 ft (21.3 m) 2 ft (.6 m)
Through the Wall 2 65 ft (19.8 m) 3 ft (.9 m)
Through the Wall 3 60 ft (18.3 m) 5 ft (1.5 m)
Through the Wall 4 55 ft (16.8 m) 8 ft (2.4 m)
Through the Wall 5 50 ft (15.3 m) 12 ft (3.6 m)
Through the Roof 1 70 ft (21.3 m) 2 ft (.6 m)
Through the Roof 2 65 ft (19.8 m) 3 ft (.9 m)
Through the Roof 3 60 ft (18.3 m) 5 ft (1.5 m)
Through the Roof 4 55 ft (16.8 m) 8 ft (2.4 m)
Through the Roof 5 50 ft (15.3 m) 12 ft (3.6 m)
NOTE: When using 4” (10.2 cm) PVC, use a 4” (10.1 cm) to 3” (7.6 cm)
reducer and exit the building wall with 3” (7.6 cm) PVC using the 3” (7.6
cm) 90° vent terminal supplied. Two 45° elbows are equivalent to one 90°
elbow.
Figure 2
NOTE: ABS or CPVC pipes may be substituted for PVC pipe. Do not mix
ABS and PVC pipe in the same installation.
Venting (Part I) continued-
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