Specification

3
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'
(High Altitude Model Required)
50' 50' 40' 40'
3" 140'
110'
(High Altitude Model Required)
140' 140' 110' 110'
4" 140'
110'
(High Altitude Model Required)
140' 140' 110' 110'
5400-7800
2" 50'
20'
(High Altitude Model Required)
50' 50' 10' 20'
3" 140'
110'
(High Altitude Model Required)
140' 140' 110' 110'
4" 140'
110'
(High Altitude Model Required)
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 OF MANUAL.
++
LP GAS MODELS HAVE UNIQUE HIGH ALTITUDE MODEL NUMBERS. THEY ARE FACTORY SET FOR HIGH ALTITUDE OPERATION. HIGH ALTITUDE
MODELS HAVE A 'H' DESIGNATION 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
RESIDENTIAL EQUIVALENT VENT LENGTHS
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" concentric venting only as listed
in the above chart.
2" Concentric vent can only be used with 2" 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' 0 30'
VENTING – ELBOW EQUIVALENT VENT LENGTH
90° 45°
SHORT SWEEP STANDARD LONG SWEEP SHORT SWEEP STANDARD LONG SWEEP
DO NOT USE 7' 5' DO NOT USE 4.5' 2.5'
• Each 45 degree elbow reduced the equivalent length by 2-1/2 ft.