Use & Care Manual

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d .008
d .010
Vent
#
27
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d .008
d .010
Vent
Combustion Air-Inlet
Alternate Concentric Vent and /or Combustion Air-Inlet Pipe
Through Roof
Slope 1/8 in. per foot
(10 mm per m) towards
the water heater
Combustion Air-Inlet
Elbow
Short Piece of Pipe
Concentric Vent and /or Combustion Air-Inlet Pipe
Through Roof
• Clean and cement a 3 in. (7.6 cm) diameter,
Schedule 40, PVC, 90°, 1/4 standard bend elbow
to the short, straight section of pipe.
From the inside, clean and cement the Wye tting
to the vent and combustion air-inlet pipes of the
termination assembly.
Complete the installation of the remainder of the vent
system and attach it to the vent connector tting on the
water heater’s blower assembly.
• Horizontal lengths of the vent system must slope
towards the water heater a minimum of 1/8 in. per
foot (10 mm per m).
• DO NOT use unequal diameters of pipe and
ttings for the vent and combustion air-inlet
systems except as dened 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 tting 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.
IMPORTANT: Ensure that all the coupling clamps
are tight before allowing the water heater to
operate.
!
WARNING: Do not operate the water
heater with the rain cap and elbows removed or
recirculation of combustion products may occur
and/or the vent and combustion air-inlet systems
could take in water, causing damage to the water
heater. Failure to follow this warning could result
in damage to the unit, improper operation, personal
injury, or death.
# Min. 12 in.
(30.5 cm) Above Roof
or Anticipated Snow
Level; which
ever is highest
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
#
# Min. 12 in.
(30.5 cm) Above Roof
or Anticipated Snow
Level; which
ever is highest
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
Optional - Condensate
Management Drain Port*
Optional -Condensate
Management Drain
Port*
*See Condensate Management Section for
additional information about optional piping.