11
Power Direct Vent
Vent Pipe Size ( In. )
2 3 4
Model Maximum Vent Length for Inlet or
Outlet ( ft. )
*GHE100-130 20 60 85
GHE100-160 20 50 75
GHE100-200 20 40 65
GHE100-250 n/a 40 65
GHE100-300 n/a 40 40
GHE100-350 n/a 40 40
For each 90° elbow, reduce pipe length by five ( 5 ) feet.
For each 45° elbow, reduce pipe length by five ( 2.5 ) feet.
Example of Venting for 2” Power Direct Vent Setup :
Refer to the chart above, “ Power Direct Vent”, for actual vent
length allowed on each model.
Number of 90° Elbows
excluding Vent Terminals
Number of
45° Elbows
Minimum
Pipe
Length
Required
(ft)
Maxi-
mum
Pipe
Length
(ft)
Inlet Vent Outlet Vent
None None None 5.0 20.0
One ( 1 ) One ( 1 ) None ----- 15.0
One ( 1 ) One ( 1 ) One ( 1 ) ----- 12.5
Two ( 2 ) Two ( 2 ) None ----- 10.0
Two ( 2 ) Two ( 2 ) One ( 1 ) ----- 7.5
Three ( 3 ) Three ( 3 ) None ----- 5.0
Three ( 3 ) Three ( 3 ) One ( 1 ) ----- 2.5
MINIMUM AND MAXIMUM VENT LENGTHS
Note: Vent pipe size should not be mixed for venting these units. Use same size pipe fo all venting of the unit.
NOTICE: Vent terminals need to be mounted horizontally a minimum of 24 inches (center to center) horizontally apart and a maximum of 36 inches
apart (center to center) See Figure 12 for venting multiple units.
Power Vent
Vent Pipe Size ( In. )
2 3 4
Model Maximum Vent Length for Outlet ( ft. )
GHE100-130 20 60 85
GHE100-160 20 50 75
GHE100-200 20 40 65
GHE100-250 n/a 40 65
GHE100-300 n/a 40 40
GHE100-350 n/a 40 40
For each 90° elbow, reduce pipe length by five ( 5 ) feet.
For each 45° elbow, reduce pipe length by five ( 2.5 ) feet.
Example of Venting for a 4” Power Vent Setup (GHE100-130)
Refer to the chart above, “ Power Vent”, for actual vent length
allowed on each model.
Number of 90° Elbows,
excluding Vent Terminals
Number
of 45 °
Elbows
Minimum
Pipe
Length
Required
(ft)
Maxi-
mum
Pipe
Length
(ft)
Outlet Vent
None None 5.0 85.0
One ( 1 ) None ----- 80.0
One ( 1 ) One ( 1 ) ----- 77.5
Two ( 2 ) None ----- 75.0
Two ( 2 ) One ( 1 ) ----- 72.5
Three ( 3 ) None ----- 70.0
Three ( 3 ) One ( 1 ) ----- 67.5
Four ( 4 ) None ----- 65.0
Four ( 4 ) One ( 1 ) ----- 62.5
Five ( 5 ) None ----- 60.0
*NOTICE: The GHE Prefix on the model numbers above can also be THE.
TABLE 1.
DO NOT exceed the venting distances or the number of elbows listed in this manual.
Exceeding the maximum lengths may cause the water heater to malfunction or cause a lock-
out condition.
Installation
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