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.
Min
straight
Length
ft (m)
(2) 90
°
Elbows with (1) 90
°
Elbow
1
55
(16.8)
5
(1.5)
(2) 90
°
Elbows with (1) 90
°
Elbow
2
50
(15.2)
5
(1.5)
(2) 90
°
Elbows with (1) 90
°
Elbow
3
45
(13.7)
5
(1.5)
(2) 90
°
Elbows with (1) 90
°
Elbow
4
40
(12.2)
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.
Min
straight
Length
ft (m)
(2) 90
°
Elbows with (1) 90
°
Elbow
1
85
(25.9)
10
(3.1)
(2) 90
°
Elbows with (1) 90
°
Elbow
2
80
(24.4)
10
(3.1)
(2) 90
°
Elbows with (1) 90
°
Elbow
3
75
(22.9)
10
(3.1)
(2) 90
°
Elbows with (1) 90
°
Elbow
4
70
(21.4)
10
(3.1)
(2) 90
°
Elbows with (1) 90
°
Elbow
5
65
(19.8)
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.
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