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Venting continued-
3" (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating
(2) 90 Elbows with (1)
90 Elbow
(2) 90 Elbows with (1)
90 Elbow
(2) 90 Elbows with (1)
90 Elbow
(2) 90 Elbows with (1)
90 Elbow
4" (10.2 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)
(2) 90 Elbows with (1) 90
Elbow
(2) 90 Elbows with (1) 90
Elbow
(2) 90 Elbows with (1) 90
Elbow
(2) 90 Elbows with (1) 90
Elbow
(2) 90 Elbows with (1) 90
Elbow
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.
TABLE 3
Max Straight
Length ft (m)
# of Elbows
(excl. vent term.)
48,65
gal.
40
1
(12.2)
35
2
(10.7)
3
30 (9.1)
4
25 (7.6)
TABLE 4
# of Elbows
Max straight
(excl. vent
Length ft (m)
term.)
48,65
gal.
85
1
(25.9)
80
2
(24.4)
75
3
(22.9)
70
4
(21.3)
65
5
(19.8)
20
Min
straight
Length
75 gal.
ft (m)
30 (9.1)
5 (1.5)
5 (1.5)
25 (7.6)
20 (6.1)
5 (1.5)
5 (1.5)
15 (4.6)
Min
straight
Length
75 gal.
ft (m)
75
10 (3.1)
(22.9)
70
10 (3.1)
(21.3)
65
10 (3.1)
(19.8)
60
10 (3.1)
(18.3)
55
10 (3.1)
(16.8)
RPD-I-S Rev A
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