Bradford White THROUGH-THE-WALL GAS WATER HEATER Install And Operation Instructions page 23

2" (5.1 cm) PVC VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
Terminating
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
3" (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR LOW
Terminating (Reduce 3" to 2")
(Reduce 7.6 cm to 5.1 cm)
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
HIGH ALTITUDE INSTAL LATIONS FOR ELEVATIONS OVER 2,000
FEET (610 m) ABOVE SEA LEVEL
The capacity of the induced draft blower declines with increasing altitude due to a
reduction in the air density. In order to assure safe and reliable performance of
the water heater, the following guidelines must be followed. Refer to the venting
tables below for maximum distances for the altitudes in your location.
TABLE 11 - HIGH ALTITUDE VENT CONNECTOR MODIFICATIONS
Altitude above sea
level
0 - 2,000 ft
(0 - 610 m)
over 2,000 - 5,000 ft
(over 610 - 1524 m)
over 5,000 - 8,000 ft
(over 1524 - 2439 m)
over 8,000 - 10,000 ft
(over 2439 - 2540 m)
LOW GROUND CLEARANCE INSTALLATIONS
GROUND CLEARANCE INSTALLATIONS
Maximum venting
length reduction
from tables 7 & 9
No reduction in vent
length required
Reduce maximum vent
length by 20 ft (6.1 m)
Use only 3" (7.6 cm)
PVC (Tables 8 & 10)
Use only 3" (7.6 cm)
PVC (Tables 8 & 10)
TABLE 9
# of
Elbows
0
1
2
3
4
TABLE 10
#of Maximum
Elbows Length
0 90 ft (27.5 m)
1 85 ft (25.9 m)
2 80 ft (24.4 m)
3 75 ft (22.9m)
4 70 ft (21.4 m)
5 65 ft (19.8 m)
23
Maximum Minimum
Length Length
35 ft (10.7 2 ft (.6 m)
m)
30 ft (9.2 m) 2 ft (.6 m)
25 ft (7.6 m) 2 ft (.6 m)
20 ft (6.1 m) 3 ft (.9 m)
15 ft (4.6 m) 4 ft (1.2 m)
Minimum
Length
10 ft (3.1 m)
10 ft (3.1 m)
10 ft (3.1 m)
10 ft (3.1 m)
10 ft (3.1 m)
12 ft (3.7 m)
Maximum venting
length reduction from
tables 8 & 10
No reduction in vent
length required
No reduction in vent
length required
No reduction in vent
length required
Reduce maximum vent
length by 20 ft (6.1 m)