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Typical installations using
• Adjust the appropriate DIP switches according to vent size 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.
WARNING
• Failure to observe these warnings could lead to carbon monoxide poisoning
or death.
2 inch vent installation
Vent length
5 to 6.5 ft
(1.5 to 2.0 m)
• For details of the optional items, refer to the Installation manual for each optional item.
• For clearance information, refer to pp. 25 to 27.
* 3" elbow with bird
screen
Intake vent
collar
(Female)
*The bird screen that fits into the 3 inch elbow is
supplied with the indoor water heater.
-DIP switch settings for vent length-
PVC, CPVC, ABS, or polypropylene vent
Single vent
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : ON
No. 7 : ON
Single vent with room-air intake
Hanger
Vent connections for single vent
2" straight pipe
3"x2" reducer
Exhaust vent
collar (Female)
19
Computer board
Termination
1. Connect a 3" elbow directly on the intake vent
collar of the water heater.
2. Connect a 3" x 2" reducer directly on the
exhaust vent collar of the wateheater. Make
sure the couplings engage the o-rings installed
in the intake and exhaust vent collars
3. Connect a 2" straight pipe to the reducer.
Page
Installation Manual
Installation
Bank of DIP switches
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