Lochinvar 540H Installation Manual And Owner's Manual page 23

3 inch & 4 inch vent installation
Horizontal Installation
Hanger
Connect between exhaust vent collar and piping.
See the instructions on the next page.
For details on the vent components, refer to the vent manufacturer's instructions.
Horizontal Installation
Elbow
Connect between exhaust vent collar and piping.
See the instructions on the next page.
For details on the vent components, refer to the vent manufacturer's instructions.
• Adjust the appropriate DIP switches according to model and vent length as shown
in the following. DO NOT adjust the other DIP switches.
• Turn off the power supply to the water heater before changing the DIP switch settings.
WARNING
• Failure to observe these warnings could lead to carbon monoxide poisoning or death.
140H/240H/340H
Bank of
DIP switches
Two-pipe, direct-vent installation
Wall
Hanger
Single-pipe with room-air intake installation
Hanger
Wall
Vertical Installation
Roof
Vertical Installation
Roof
Elbow
Upper bank of
DIP switches
Lower bank of
DIP switches
23
Page
Installation Manual
Installation
Roof flashing
Fire stop
Roof
flashing
Fire stop
540H