22
Page
Installation
Installation Manual
-DIP switch settings for vent length-
Typical installations using
PVC, CPVC, ABS, or polypropylene vent
WARNING
• Adjust the appropriate DIP switches according to model and vent length as shown
below. DO NOT adjust the other DIP switches.
• Turn off the power supply to the water heater before changing the DIP switch settings.
• Failure to observe these warnings could lead to carbon monoxide poisoning or death.
Two-pipe, direct-vent installation
3 inch & 4 inch vent installation
Vertical Installation
Roof flashing
Roof
Fire stop
Horizontal Installation
Wall
Connect between exhaust vent collar and piping.
See the instructions on the next page.
Hanger
Hanger
For details on the vent components, refer to the vent manufacturer’s instructions.
Connect between exhaust vent collar and piping.
See the instructions on the next page.
Single-pipe with room-air intake installation
Roof
flashing
Fire stop
Vertical Installation
Roof
Elbow
Horizontal Installation
Elbow
Wall
Hanger
For details on the vent components, refer to the vent manufacturer’s instructions.
X3™ CARTRIDGE NOT SHOWN.
Summary of Contents for 240HX3
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