59Installing a Common Vent System
5.6 Setting Up the Common Vent System
DANGER
Incorrect DIP switch settings may lead to severe personal
injury, death, or property damage.
WARNING
Disconnect power before servicing. Do not turn power on
until electrical wiring is finished. Death or serious injury from
electrical shock may result if power is supplied to the water
heater during electrical wiring or servicing.
CAUTION
Ɣ
Do not remove the front cover unless the power to the water
heater is turned off or disconnected. Failure to do so may
result in electric shock.
Ɣ
Configure only the DIP switches that require adjustment
according to the instructions in this manual. Do not adjust
any other DIP switches.
Refer to the following figures when setting DIP switches.
1 2 3 4 5 6 7 8 9 10
ON ON
Switch
(2–Switch DIP)
Function Setting
1
Cascade Vent
Settings
Common Vent 1-OFF
Individual Vent 1-ON
1 2 3 4 5 6 7 8 9 10
ON ON
Switch
(10–Switch DIP)
Function Setting
9 & 10
High Altitude
Settings
0 – 1,999 f
t
(0 – 609 m)
9-OFF,
10-OFF
2,000 – 4,500 ft
(610 – 1,372 m)
9-ON,
10-OFF
Note
The NPE series water heaters may be installed at
elevations up to 4,500 ft (1,372 m) for use with Natural
Gas and Propane. To use the water heaters in the
common vent system at a specific altitude, the DIP
switches should be set as described above.
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