Use & Care Manual
Installing the Water Heater
22
Read these instructions thoroughly and make sure you
understand all steps and procedures before proceeding
with the installation.
Determine the locations for the vent and combustion
air-inlet terminals then make two (2) holes through the
exterior wall to accommodate the vent and combustion
air-inlet pipes.
● Maintain a minimum horizational distance of
12 in. (30.5 cm) between the vent and combustion
air- inlet terminal centerlines.
● Maintain a minimum distance from the vent and
combustion air-inlet terminals of not less than
1 ft. (30.5 cm) above grade or average snowfall
whichever is greater.
Insert lengths of vent and combustion air-inlet pipes
through the wall as shown.
● Allow sufficient length of pipe to extend beyond the
exterior wall of the building for attachment of the
vent riser assemblies as shown.
Place the supplied 1/2 in. (1.3 cm) mesh metal screens
inside each terminal fitting.
NOTICE: For cold climates the screens may be
removed.
Connect the vent riser assemblies to the vent and
combustion air-inlet pipes which are extending out of
the building.
● Ensure that the back of the 90° elbows are flush
with the outside wall surface and that the vent and
combustion air-inlet terminations of the vent risers
are parallel with the outside wall.
IMPORTANT: Remember to include the additional
90° elbows and vertical height of vent and combustion
air-inlet pipes of the vent riser when calculating
the maximum equivalent vent and combustion air-
inlet system lengths. The maximum equivalent vent
and combustion air-inlet system lengths must be as
specified by Table 1 or 2.
● The vent and combustion air-inlet terminations are
not included in the equivalency calculations.
Complete the installation of the remainder of the vent
system and attach it to the vent connector fitting on the
water heater's blower assembly.
● Horizontal sections of the vent system must slope
downward toward the water heater a minimum
of 1/8 in. per foot (10 mm per m).
DO NOT use unequal diameters of pipe and fittings
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.
Horizontal Vent and Combustion Air-Inlet Alternate Vent Riser Terminal
Installation
(40, 50, & 65 Gallon Models ONLY)
*
*
* Clearance is equal and parallel to wall
Side View
Termination Openings -
12 in. (30.5 cm) min. above
grade or anticipated snow level
12 in.
(30.5 cm) min.
Terminal assemblies to be parallel to wall.
Front View
Option 1
Short piece of pipe
Exhaust
Vent
Terminal
Combustion
Air-Inlet
Terminal
12 in.
(30.5 cm) min.
Terminal assemblies to be parallel to wall.
Front View
Option 2
Short piece of pipe
Exhaust
Vent
Terminal
Combustion
Air-Inlet
Terminal