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• The water heater requires its own (separate) venting
system.
• 2” and 3” PVC, ABS or CPVC Schedule 40 piping and fittings
are acceptable materials for the vent system on all 40 and
50 gallon 40,000 BTU/HR models.
• It cannot be connected to existing vent piping or chimney.
• It must terminate horizontally to the outdoors.
NOTE: See pages 24 and 25 for vertical venting through the
roof.
VENTING SYSTEM EXAMPLE INSTALLATIONS
FOR ALL MODELS
The vent piping cannot under any circumstances be run down
hill.
FIGURE 34.
The vent piping may be installed as follows:
• Horizontal runs require a minimum 1/8” rise per five feet
FIGURE 35.
FIGURE 36.
FIGURE 37.
75 GALLON 70,000 AND 75,000 BTU/HR MODELS
See chart on following page for maximum length.
FIGURE 38.