Instructions / Assembly

16
INSTALLATION
Note: Vent pipe size should not be mixed for venting these water heater.
Use same diameter pipe for all venting of the unit.
All power direct models can use 2 in. concentric venting only as listed
in the above chart.
2 inch concentric vent can only be used with 2 inch rigid piping.
DO NOT mismatch concentric vent terminations with different rigid
piping as it may cause the heater to malfunction or cause a lock-out
condition unless specifically mentioned.
3" Concentric vent may be used with 3" and 4" venting.
Flexible Polypropylene pipe (ft)
Pipe Size (IN.)
2" 3"
Intake Exhaust Intake Exhaust
Max PV
0
30'
(13m)
0
30'
(13m)
40G-50K AND 50G-50K; POWER VENT
CONFIGURATION; (RIGID PIPE)
40G-50K AND 50G-50K; POWER DIRECT VENT
CONFIGURATION; (RIGID PIPE)
Elevation
(Feet)
Vent Size
(Inches)
Nat Max Eq.
Length (Feet)
LP Max Eq.
Length (Feet)
Nat Max Eq. Length(Feet) LP Max Eq. Length (Feet)
Terminations
Intake Exhaust Intake Exhaust
0-2000
2" 50' 50' 50' 50' 50' 50'
2" AND 3"
90° ELBOWS,
2", 3" AND 4"
CONCENTRIC
AND 2"AND 3"
PANCAKE
3" 140' 140' 140' 140' 140' 140'
4" 140' 140' 140' 140' 140' 140'
2000-5400
2" 50' 40' 50' 50' 40' 40'
3" 140' 110' 140' 140' 110' 110'
4" 140' 110' 140' 140' 110' 110'
5400-7800
2" 50' 20' 50' 50' 10' 20'
3" 140' 110' 140' 140' 110' 110'
4" 140' 110' 140' 140' 110' 110'
7800-
10,100
2" 50'
NOT
APPLICABLE
50' 50'
NOT
APPLICABLE
NOT
APPLICABLE
3" 140'
NOT
APPLICABLE
140' 140'
NOT
APPLICABLE
NOT
APPLICABLE
4" 140'
NOT
APPLICABLE
140' 140'
NOT
APPLICABLE
NOT
APPLICABLE
*MINIMUM INTAKE AIR AND EXHAUST VENT: 10' EQUIVALENT LENGTH
NATURAL GAS MODELS CAN BE INSTALLED IN HIGH ALTITUDE LOCATIONS WITH DISPLAY CONTROL SETTING CHANGES AS SHOWN IN HIGH ALTITUDE SECTION.
APPLIES ONLY TO TOUCH SCREEN DISPLAY MODELS
++LP GAS MODELS HAVE UNIQUE HIGH ALTITUDE MODEL NUMBERS. THEY ARE FACTORY SET FOR HIGH ALTITUDE OPERATION. HIGH ALTITUDE MODELS HAVE A 'H' DESIGNA-
TION AT THE END OF THE MODEL NUMBER. REFER TO RATING PLATE FOR MODEL NUMBER.
50G-76K, 50G-100K; POWER VENT
CONFIGURATION; (RIGID PIPE)
50G-76K, 50G-100K; POWER DIRECT VENT
CONFIGURATION; (RIGID PIPE)
Elevation
(Feet)
Vent Size
(Inches)
Nat Max Eq.
Length (Feet)
LP Max Eq.
Length (Feet)
Nat Max Eq. Length(Feet) LP Max Eq. Length (Feet)
Terminations
Intake Exhaust Intake Exhaust
0-10,100
2" 40' 40' 40' 40' 40' 40'
2" AND 3"
90° ELBOWS,
2", 3" AND 4"
CONCENTRIC
AND 2"AND 3"
PANCAKE
3" 140' 140' 140' 140' 140' 140'
4" 140' 140' 140' 140' 140' 140'
MINIMUM INTAKE AIR AND EXHAUST VENT: 10' EQUIVALENT LENGTH
Table 1 - Residential Equivalent Vent Lengths
Follow manufacturers instructions for installation of flex
vents.