Minimum And Maximum Vent Lengths - Rheem GHE119SS Use & Care Manual

MINIMUM AND MAXIMUM VENT LENGTHS

Important information for all installations:
1) The minimum required venting is what is required to safely extend the
inlet and outlet vent pipes outside of the building.
2) Each 90° elbow (standard or long sweep elbow) reduces the
equivalent vent length by 5 feet (1.5m).
3) Each 45° elbow reduces the equivalent vent length by 2 1/2 feet
(0.8m).
4) DO NOT mix pipe sizes for venting these models, use only one size of
pipe for all venting.
5) All vent terminations (horizontal or vertical) should be a minimum
of 24 inches (61cm) and a maximum of 36 inches (91 cm) apart, as
measured from center to center of terminals.
6) The maximum equivalent vent lengths, for inlet and outlet, must
be within 20 equivalent feet (6.1m) of each other. Supplied vent
terminal(s) are not included in the maximum equivalent vent length.
Exceeding the maximum equivalent vent lengths may cause the water heater to malfunction or
cause a lock-out condition.
Power Vent
Inlet Models
GHE80SU-130(A)
or
GHE80SU-160(A)
GHE80SU-200(A)
GHE80SU-300(A)
GHE100SU-130(A)
or
GHE100SU-160(A)
GH100SU-200(A)
GHE100SU-250(A)
or
GHE100SU-300(A)
GHE100SU-350(A)
or
GHE100SU-400(A)
GHE119SU-500(A)
All Models
TABLE 1. POWER VENTING – RIGID VENT PIPING: PVC, CPVC, ABS, PP – MAX VENT LENGTHS
Models GHE80SU-200(A) & GHE80SU-300(A) are limited to an altitude of 8000 ft, while all other models are limited to
8999 ft.
Model GHE119SU-500(A) if installed above 5000 ft, refer to "Gas Valve Instructions" for adjustments.
Installation
2" (5 cm)
Altitude
Range
Inlet
0-8999 Ft 1
(0-2743 m) (0.31 m)
0-8000 ft
N/A
(0-2438 m)
0-8000 Ft
N/A
(0-2438 m)
0-8999 ft 1
(0-2743 m) (0.31 m)
0-8999 ft
N/A
(0-2743 m)
0-8999 ft
N/A
(0-2743 m)
0-8999 ft
N/A
(0-2743 m)
0-10000 ft
N/A
(0-3435 m)
1
See Below
(0.31 m)
Max Vent Length (Eq.Ft.)
Rigid Pipe Diameter
3" (8 cm)
Outlet Inlet Outlet
20 1 135
(6.1 m) (0.31 m) (41.1 m)
1 135
N/A
(0.31 m) (41.1 m)
1 135
N/A
(0.31 m) (41.1 m)
20 1 135
(6.1 m) (0.31 m) (41.1 m)
1 135
N/A
(0.31 m) (41.1 m)
1 135
N/A
(0.31 m) (41.1 m)
1 65
N/A
(0.31 m) (19.8 m)
1 60
N/A
(18.3 m)
(0.31 m)
Min Vent Length (Eq.Ft.)
Rigid Pipe Diameter
15 1 15
(4.6 m) (0.31 m) (4.6 m)
11
Feet
20
50
60
70
80
100
120
130
170
4" (10 cm) 6" (15 cm)
Inlet Outlet Inlet
1 185
N/A
(0.31 m) (56.4 m)
1 185
N/A
(0.31 m) (56.4 m)
1 185 1
(0.31 m) (56.4 m) (0.31 m)
1 185
N/A
(0.31 m) (56.4 m)
1 185
N/A
(0.31 m) (56.4 m)
1 185 1
(0.31 m) (56.4 m) (0.31 m)
1 100 1
(0.31 m) (30.5 m) (0.31 m)
1 150 1
(46.7 m)
(0.31 m) (0.31 m)
1 15 1
(0.31 m) (4.6 m) (0.31 m)
to Meters
6.1
15.2
18.3
21.3
24.4
30.5
36.6
39.6
51.8
Outlet
N/A
N/A
120
(36.6 m)
N/A
N/A
120
(36.6 m)
135
(41.1 m)
150
(46.7 m)
15
(4.6 m)