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Typical installations using
• 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.
WARNING
• Failure to observe these warnings could lead to carbon monoxide poisoning or death.
2 inch vent installation for 140H model
• 2ʺ pipe for venting is only approved for the 140H model in the Single Pipe with Room-Air Intake Installation,
Horizontal Installation as shown below.
• Maximum vent length for 2ʺ venting is 6.5 ft (2.0 m) , not including termination.
• One long sweep elbow may be installed. Deduct 5 ft (1.5 m) from maximum vent length.
• 2ʺ venting is approved on installations up to 3,000 ft (914 m).
140H Computer board
Bank of DIP switches
2" straight pipe
3"x 2" reducer
*3" street elbow
with bird screen
Intake vent collar
with 3" adapter
(Female)
Vent connections for
Single-pipe with Room-Air Intake Installation, Horizontal Installation
Hanger
-DIP switch settings for vent length-
PVC, CPVC, ABS, or polypropylene vent
(1.5 to 2.0 m)
1. Insert no more than 12" (305 mm) of 3" straight pipe into
the exhaust vent collar with 3" adapter.
2. Connect a 3" x 2" reducer with the 3" straight pipe.
3. Connect 2" straight pipe into the reducer.
4. Connect spigot end of the 3" street elbow into the intake
vent collar with 3" adapter. Be sure to insert a bird screen
Exhaust vent
into the hub side.
collar with 3"
*The bird screen that fits into the 3 inch elbow is supplied
adapter
(Female)
with the indoor water heater.
NOTICE
Termination
• For details of the vent items, refer to the Installation manual
for each item.
• For clearance information, refer to pages 14 to 16.
22
Vent length
ON 1 2 3 4 5 6 7 8 9 10
5 to 6.5 ft
OFF
3" PVC adapters are not approved for use in Canada.
Page
Installation Manual
Installation
Single vent
No. 6 : ON
No. 7 : ON
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