Maytag HRN11240P Water Heater User Manual


 
19
Venting
To insure proper venting of this gas-fired water heater, the
correct vent pipe diameter must be utilized. Do not install other
gas appliances on the same vent with this water heater as this
will adversely affect the operation on the water heater.
The combustion and ventilation air flow must not be obstructed.
The power vent water heater requires its own (separate) venting
system. It cannot be connected to an existing vent pipe or
chimney. It must be terminated to the outdoors. Failure to
properly install the venting system can result in asphyxiation, a
fire or explosion and cause DEATH, SERIOUS BODILY INJURY,
OR PROPERTY DAMAGE.
The vent pipe from the water heater must slope upward 1/8”
per five feet for any horizontal run.
All vent gases must be completely vented to the outdoors of the
structure (dwelling).
FIGURE 28.
Chemical vapor corrosion of the flue and vent system may
occur. If air for combustion contains certain chemical vapors.
Spray can propellants, cleaning solvents, refrigerator and air
conditioner refrigerants, swimming pool chemicals, calcium
and sodium chloride, waxes, bleach and process chemicals
are typical compounds which are potentially corrosive.
Horizontal runs must be securely supported at 3 1/2” foot
intervals and vertical runs supported at 5 foot intervals.
FIGURE 29.
VENTING THROUGH AN OUTSIDE WALL:
75 GALLON 70,000 AND 75,000 BTU/HR MODELS ONLY
(See rating plate for BTU/HR rating)
3” PVC, ABS or CPVC Schedule 40 vent piping:
A 3” PVC Schedule 40-45
o
vent cap with wire screen is
supplied with the water heater.
A 3” PVC, ABS or CPVC Schedule 40-90
o
street ell; used to
connect the vent pipe to the water heater when the vent pipe
is to be turned horizontally directly off the blower (supplied
locally).
3” PVC, ABS or CPVC Schedule 40 pipe (must be supplied
locally).
FIGURE 30.
75 GALLON 70,000 AND 75,000 BTU/HR MODELS ONLY
The water heater requires its own (separate) venting
system.
3” PVC, ABS or CPVC Schedule 40 piping and fittings are
acceptable materials for the vent system on all 75 gallon
70,000 and 75,000 BTU/HR models.
It cannot be connected to existing vent piping or chimney.
It must terminate horizontally to the outdoors.