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HIGH-ALTITUDE INSTALLATIONS
Check the altitude where your water heater is installed. Set DIP switches shown in the table below. The
DIP switch settings depend on the altitude.
The black squares indicate the correct DIP switch positions for high altitude installation.
The 110C and 310C : Only adjust DIP switch No. 3, No. 4, and No.5.
The 510C : Only adjust DIP switch No. 2, No. 3, and No. 4 on the lower bank.
WARNING
•
Adjust the appropriate DIP switches according to model and elevation 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.
Bank of DIP switches
110C and 310C models
Computer board
Lower bank of DIP switches
510C model
Computer board
Installation
Installation Manual
Installation altitude
The maximum certified or allowable installed altitude is 10,100 ft (3,078 m) for
110C, 310C, and 510C models.
0 to 2,000 ft
(0 to 609 m)
DEFAULT
2,001 ft to
3,000 ft
(610 m to
914 m)
3,001 ft to
5,000 ft
(915 m to
1,524 m)
5,001 ft to
7,500 ft
(1,525 m to
2,286 m)
7,501 ft to
10,100 ft
(2,287 m to
3,078 m)
110C and
310C models
No. 3 : OFF
No. 4 : OFF
No. 5 : OFF
No. 3 : OFF
No. 4 : ON
No. 5 : OFF
No. 3 : OFF
No. 4 : OFF
No. 5 : ON
No. 3 : OFF
No. 4 : ON
No. 5 : ON
No. 3 : ON
No. 4 : ON
No. 5 : ON
510C model
(Lower bank of
DIP switches)
No. 2 : OFF
No. 3 : OFF
No. 4 : OFF
No. 2 : OFF
No. 3 : ON
No. 4 : OFF
No. 2 : OFF
No. 3 : OFF
No. 4 : ON
No. 2 : OFF
No. 3 : ON
No. 4 : ON
No. 2 : ON
No. 3 : ON
No. 4 : ON
Altitude
Model
OFF
ON 1 2 3 4 5 6
OFF
ON 1 2 3 4 5 6
OFF
ON 1 2 3 4 5 6
OFF
ON 1 2 3 4 5 6
OFF
ON 1 2 3 4 5 6
OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
ON 1 2 3 4 5 6 7 8 9 10
