Installation / Operation Instruction Manual

16
Venting continued-
TABLE 3
3” (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating
# of Elbows
(excluding vent
terminals)
Maximum
Straight
Length ft (m)
Minimum
Straight
Length ft (m)
48 gal.
(2) 90 Elbows with
(1) 90 Elbow
1
35 (10.7)
5 (1.5)
(2) 90 Elbows with
(1) 90 Elbow
2
30 (9.2)
5 (1.5)
(2) 90 Elbows with
(1) 90 Elbow
3
25 (7.6)
5 (1.5)
(2) 90 Elbows with
(1) 90 Elbow
4
20 (6.1)
5 (1.5)
TABLE 4
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)
# of Elbows
(excluding vent
terminals)
Maximum
Straight
Length ft (m)
Minimum
Straight
Length ft (m)
48 gal.
(2) 90 Elbows with (1)
90 Elbow
1
165 (50.3)
10 (3.1)
(2) 90 Elbows with (1)
90 Elbow
2
160 (48.8)
10 (3.1)
(2) 90 Elbows with (1)
90 Elbow
3
155 (47.2)
10 (3.1)
(2) 90 Elbows with (1)
90 Elbow
4
150 (45.7)
10 (3.1)
(2) 90 Elbows with (1)
90 Elbow
5
145 (44.2)
10 (3.1)
HIGH ALTITUDE INSTALLATIONS FOR ELEVATIONS OVER 2,000
FT (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.