Bradford White M-2-TW-75T6SX - Manual (Page 16)

16
Venting (Part I) continued-
TABLE 3
3” (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Max Straight
Length ft (m) Terminating # of
Elbows
48,65
gal.
75 gal.
Min
straight
Length
ft (m)
(2) 90 ° Elbows with (1) 90° Elbow 1 45 (13.7) 35 (10.7) 5 (1.5)
(2) 90 ° Elbows with (1) 90° Elbow 2 40 (12.2) 30 (9.1) 5 (1.5)
(2) 90 ° Elbows with (1) 90° Elbow 3 35 (10.7) 25 (7.6) 5 (1.5)
(2) 90 ° Elbows with (1) 90° Elbow 4 30 (9.1) 20 (6.1) 5 (1.5)
TABLE 4
4” (10.2 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Max straight
Length ft (m) Terminating (Reduce 4” to 3”)
(Reduce 10.1 cm to 7.6 cm)
# of
Elbows
48,65
gal.
75 gal.
Min
straight
Length
ft (m)
(2) 90 ° Elbows with (1) 90° Elbow 1 75 (22.9) 65 (19.8) 10 (3.1)
(2) 90 ° Elbows with (1) 90° Elbow 2 70 (21.4) 60 (18.3) 10 (3.1)
(2) 90 ° Elbows with (1) 90° Elbow 3 65 (19.8) 55 (16.8) 10 (3.1)
(2) 90 ° Elbows with (1) 90° Elbow 4 60 (18.3) 50 (15.2) 10 (3.1)
(2) 90 ° Elbows with (1) 90° Elbow 5 55 (16.8) 45 (13.7) 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.