12
Page
Bank of DIP switches
110U and 310U
Computer board
NOTE:
The dark squares indicate the correct DIP switch positions.
Lower bank of DIP switches
510U
Computer board
Installation
Installation Manual
Indoor models
0 to 2,000 ft
(0 to 610 m)
(DEFAULT)
2,001 to
3,000 ft
(611 to 914 m)
3,001 to
5,000 ft
(915 to 1,524 m)
5,001 to
7,500 ft
(1,525 to 2,286 m)
7,501 to
10,100 ft
(2,287 to 3,078 m)
110U and 310U models
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : OFF
No. 4 : OFF
No. 5 : OFF
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : OFF
No. 4 : ON
No. 5 : OFF
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : OFF
No. 4 : OFF
No. 5 : ON
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : OFF
No. 4 : ON
No. 5 : ON
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : ON
No. 4 : ON
No. 5 : ON
510U model
(Lower bank of
DIP switches)
OFF
ON 1 2 3 4 5 6
No. 2 : OFF
No. 3 : OFF
No. 4 : OFF
OFF
ON 1 2 3 4 5 6
No. 2 : OFF
No. 3 : ON
No. 4 : OFF
OFF
ON 1 2 3 4 5 6
No. 2 : OFF
No. 3 : OFF
No. 4 : ON
OFF
ON 1 2 3 4 5 6
No. 2 : OFF
No. 3 : ON
No. 4 : ON
OFF
ON 1 2 3 4 5 6
No. 2 : ON
No. 3 : ON
No. 4 : ON
Altitude
DIP switches
Installation altitude
The maximum certified or
allowable installed altitude
is 10,100 ft (3,078 m) for
indoor models and 6,000
ft (1,829 m) for outdoor
models.
Outdoor models
0 to 2,000 ft
(0 to 610 m)
(DEFAULT)
2,001 to
4,000 ft
(611 to 1,219 m)
4,001 to
6,000 ft
(1,220 to 1,829 m)
110U and 310U models
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : OFF
No. 4 : OFF
No. 5 : OFF
OFF
ON 1 2 3 4 5 6 7 8 9 10
No. 3 : OFF
No. 4 : OFF
No. 5 : ON
OFF
ON
1 2 3 4 5 6 7 8 9 10
No. 3 : ON
No. 4 : OFF
No. 5 : ON
510U model
(Lower bank of
DIP switches)
OFF
ON 1 2 3 4 5 6
No. 2 : OFF
No. 3 : OFF
No. 4 : OFF
OFF
ON 1 2 3 4 5 6
No. 2 : OFF
No. 3 : OFF
No. 4 : ON
OFF
ON 1 2 3 4 5 6
No. 2 : ON
No. 3 : OFF
No. 4 : ON
Altitude
DIP switches
HIGH-ALTITUDE INSTALLATIONS
Check the elevation where your water heater is installed. Set your DIP switches according to altitude as
shown below.
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.
