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Page
SETTING THE TEMPERATURE ON THE PCB (WITHOUT BUILT-IN
CONTROLLER or REMOTE CONTROLLER)
There are two preset temperatures (120°F (50°C) and 140°F (60°C)) that you can select when the tem-
perature controller is inoperable. To do so, adjust the appropriate DIP switch as shown in the table below.
When the remote controller is in normal operation, the set temperature of the remote controller is given
priority over the set temperature of the DIP switch settings.
Normal Operation
Owner's Guide
NOTE:
Only change the switches with dark squares.
The dark squares indicate the correct DIP
switch positions.
The temperature has been preset at the factory to 120 °F (50 °C).
Middle bank of DIP switches
120 °F (50
°C)
DEFAULT
140 °F (60 °C)
1
2
3
4
5
6
ON
No.5 : OFF
1
2
3
4
5
6
ON
No.5 : ON
WARNING
•
To set the temperature, adjust only the No. 5 DIP switch in the MIDDLE
bank of DIP switches. (See 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 poison-
ing, severe personal injury, or death.
FLOW
Appliance/Use
Flow rate
GPM (US)
L/min
Lavatory Faucet
1.0
3.8
Bath Tub
4.0 – 10.0
15.2 - 37.8
Shower
2.0
7.5
Kitchen Sink
1.5
5.6
Dishwasher
1.5
5.6
Washing machine
4.0
15.2
Household Flow Rates
Taken from UPC 2006
•
The flow rate through the water heater is limited to a maximum of 10.0 GPM (38 L/min) for the
540P model.
•
The temperature setting, along with the supply temperature of the water will determine the flow rate
output of the unit.
•
Please refer to the temperature vs. gallons per minute chart on p. 76 to determine the likely flow rates
based on your local ground water temperature and your desired outlet water temperature.
•
Refer to the table below for typical household plumbing fixture flow rates to determine what the water
heater can do in a household application.
Middle bank
of DIP switches
Lower bank of
DIP switches
Upper bank of
DIP switches
