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The content on this page is intended for use by qualified
installation/service personnel ONLY.
WARNING: Improper adjustment, altera-
tion, service or maintenance can cause prop-
erty damage, personal injury, or death.
Minimum Temperature Adjustment by the
Main Remote Control (UMC-117, USC1-117
and USC2-117)
Required adjustment for 85°F (29°C) water
temperature setting.
Follow the instruction below if it is determined that a
setting of 85°F (29°C) is required .
●
Turn on the remote control . Turn off the gas and
water shutoff valves .
●
Press the Down arrow temperature adjustment but-
ton on the remote control for several times and set
the temperature at 100°F (38°C) .
●
Press the Down button on remote control 3 times
within 5 seconds . The display of the remote con-
trol will show “85” .
●
Turn on the gas and water shut off valves .
●
Check and ensure safe operation and performance
of the water heater .
NOTICE:
The maximum flow rate at 85°F (29°C) is
1 .3 gpm (5 .0 l/m) .
High Altitude DIP Switch Adjustment
For High Altitude Installation above 3,280
Feet (1,000m):
When the water heater is installed above 3,280 feet
(1,000m), the adjustment of DIP switch is required for
high altitude installation .
Without adjusting the DIP switch, the water heater
may not function properly .
NOTICE: If the water heater is installed less than
3,280 feet (1,000m), no action is required.
How to adjust the DIP switch on the PCB for high
altitude installation:
●
Check the altitude (above sea level) where the
water heater is installed .
●
If the altitude is more than 3,280 feet (1,000m),
the adjustment of DIP switch is required .
●
Turn off the gas shut off valve and water shutoff
valve .
●
Remove the front cover .
●
Find the two DIP switches located at the top right
hand side of the PCB . The switch labeled "DIP 2"
is the bottom switch .
●
Change the DIP switch #3 setting of DIP 2 to
“ON” position if the water heater is installed
above 3,280 feet (1,000m) below 6,560 feet
(2,000m) . See the diagram below . DO NOT alter
any other DIP Switch .
●
Change the DIP switch #4 setting of DIP 2 to
“ON” position if the water heater is installed
above 6,560 feet (2,000m) below 9,840 feet
(3,000m) . See the diagram below . DO NOT alter
any other DIP Switch .
NOTICE: Manifold pressure will be reduced by
this adjustement.
●
Attach the unit’s front cover .
●
Turn on the gas shutoff valve and water shutoff
valve .
●
Check and ensure safe operation and performance
of the water heater .
Location of DIP Switches on PC Board .
Dip switch adjustment
3,280 feet (1,000m)
thru
6,560 feet (2,000m)
ON
1
2
3
4
As set from factory
ON
1
2
3
4
ON
1
2
3
4
Dip switch adjustment
6,560 feet (2,000m)
thru
9,840 feet (3,000m)
ON
1
2
3
4
DIP2
ON
OFF
1
2
3
4
DIP
Switches
PCB
