26
Page
Installation
Installation Manual
-DIP switch settings for vent length-
Typical installations using
stainless steel vents
DIP switch settings : Single pipe and Direct vent installations / Vent diameter : 4" venting
140H/240H/340H Indoor
540H Indoor (Upper bank of DIP switches)
Vent length
5 to 50 ft (1.5 to 15.2 m)
(DEFAULT)
51 to 100 ft (15.3 to 30.5 m)
5 to 50 ft (1.5 to 15.2 m)
(DEFAULT)
51 to 100 ft (15.3 to 30.5 m)
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 6 : O N
No. 7 : OFF
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 6 : OFF
No. 7 : OFF
OFF
ON 1 2 3 4 5 6 7 8
No. 3 : O N
No. 4 : OFF
OFF
ON 1 2 3 4 5 6 7 8
No. 3 : OFF
No. 4 : OFF
Vertical Installation
Roof
Roof flashing
Fire stop
Rain cap
Horizontal Installation
Wall
Sidewall vent
termination
Hanger
Hanger
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.
4" vent connection for direct-vent installation
4" stainless steel
vent straight pipe or
appliance adapter
Exhaust vent collar
of the Indoor
models (Female)
Intake vent
collar (Female)
4" stainless steel
vent straight pipe
or appliance adapter
Exhaust vent collar
of the Indoor models
(Female)
4" stainless steel
vent straight pipe or
appliance adapter
Intake vent
collar (Female)
4" elbow with bird
screen
1. Connect a 4” stainless steel vent pipe or appliance
adapter to the exhaust vent collar.
2. Connect a 4" elbow to the intake vent collar.
• Connect 4” stainless steel vent straight pipes
or appliance adapters to the exhaust/intake
vent collar.
4" vent connection for single vent installation
Remove the 3" adapter when using metal vent.
Exhaust vent
collar (Female)
Intake vent collar
(Female)
3" adapter*
3" adapter*
Screw
<How to remove 3" PVC adapter from the intake/exhaust collar>
For details on the vent components, refer to the vent manufacturer’s instructions.
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