Use & Care Manual

Installing the Water Heater
20
zontal sections must slope upwards a minimum of
1/8 in. per foot (10 mm per m);
DO NOT use unequal diameters of pipe and fit-
tings for the vent and combustion air-inlet systems
except as defined previously
NOTICE: The difference between the vent and
combustion air-inlet system equivalent lengths
must be no greater than 5 ft. (1.5 m).
Complete the installation of the remainder of the
combustion air-inlet system and attach it to the
combustion air-inlet connector fitting on the water
heater’s combustion air-inlet tube assembly.
Support vertical and horizontal lengths of the vent
and combustion air-inlet systems as previously
mentioned.
For 75 Gallon Power Direct Vent Models
ONLY:
These water heater models are supplied with
two (2) vent and combustion air-inlet termination
restrictors. These restrictors help the water heater
achieve peak efficiency when the water heater is
installed using 3 in. (7.6 cm) diameter pipe at the
minimum equivalent vent and combustion air-inlet
lengths of 8 ft. (2 m).
IMPORTANT: Do not install the termination
restrictors in equivalent vent and/or combustion
air-inlet lengths longer than 8 ft. (2 m) or on any
other Power Direct Vent model.
NOTICE: Termination Restrictors supplied for
use with 75 Gallon models ONLY.
Horizontal Vent and Combustion Air-Inlet Terminal Installation
continued -
2 ft. x 2 ft. (60 cm x 60 cm)
Sheet Metal Shield on Brick or
Masonry Walls
Outside of
Building
Terminals with 1/2 in. (1.3 cm)
Mesh Protective Screens Inside
and Termination Restrictors
Inside.
Note: Termination Restrictors
used on 75 Gallon
models ONLY.
Inside of
Building
Rear of Termination
Flush with Outside
of Wall
-B-
-A-
-B-
d .008
d .010
Horizontal Vent and Combustion Air-Inlet
Terminal Installation
Slope horizontal pipe downward 1/8
in. per foot (10 mm per m) min.
Min 1 ft.
(30.5 cm)
Optional -
Condensate
Management Drain
Port*
*See Condensate Management Section for
additional information about optional piping.