Bradford White U-PDX-75S-55FR-3N - Manual (Page 35)

35
Venting continued-
TABLE 7
2” (5.1 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating
# of Elbows
(excl. vent
term.)
Max Straight
Length ft (m)
Min straight
Length
ft (m)
(2) 90
 Elbows with (1) 90
Elbow
1 20 (6.1) 5 (1.5)
(2) 90
 Elbows with (1) 90
Elbow
2 15 (4.6) 5 (1.5)
(2) 90
 Elbows with (1) 90
Elbow
3 10 (3.0) 5 (1.5)
TABLE 8
3” (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating (Reduce 4”
to 3”) (Reduce 10.1 cm to
7.6 cm)
# of Elbows
(excl. vent
term.)
Max straight
Length ft (m) Min straight
Length
ft (m)
(2) 90
 Elbows with (1) 90
Elbow
1 40 (12.2) 10 (3.1)
(2) 90
 Elbows with (1) 90
Elbow
2 35 (10.7) 10 (3.1)
(2) 90
 Elbows with (1) 90
Elbow
3 30 (9.1) 10 (3.1)
(2) 90
 Elbows with (1) 90
Elbow
4 25 (7.6) 10 (3.1)
(2) 90
 Elbows with (1) 90
Elbow
5 20 (6.1) 10 (3.1)
HIGH ALTITUDE INSTALLATIONS FOR ELEVATIONS OVER 2,500
FEET (762 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, contact the supplier for high altitude kit.