User Guide

19 Page
 For details of the optional items, refer to the Installation manual for each optional item.
 For clearance information, refer to pp. 25 to 27.
Single vent with room-air intake
Termination
Hanger
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.
Vent connections for single vent
*The bird screen that fits into the 3 inch elbow is
supplied with the indoor water heater.
* 3" elbow with bird
screen
Intake vent
collar
(Female)
3"x2" reducer
2" straight pipe
Exhaust vent
collar (Female)
-DIP switch settings for vent length-
Typicalinstallaonsusing PVC, CPVC, ABS, or polypropylene vent
WARNING
• 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.
• Failure to observe these warnings could lead to carbon monoxide poisoning
or death.
2inchventinstallaon
Vent length Single vent
5 to 6.5 ft
(1.5 to 2.0 m)
OFF
ON
1 2 3 4 5 6 7 8 9 10
No. 6 : ON
No. 7 : ON
Bank of DIP switches
Computer board
Installaon
Installaon Manual