T-H3 Installation Manual

49 Page
TEMPERATURE SETTINGS ON THE PCB
(WITHOUT REMOTE CONTROLLER)
WARNING
 Adjust the appropriate DIP switches according to model and temperature 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,
severe personal injury, or death.
There are 2 preset temperatures , 120 °F (50 °C) and 140 °F (60 °C), that you can select by changing the
DIP switch settings on the computer board without the remote controller. See 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 Operaon
Owner's Guide
 The temperature has been preset at the factory to 120 °F (50 °C).
Computer board
120 °F (50 °C)
DEFAULT
140 °F (60 °C)
No. 9 : OFF
No. 9 : ON
240 and 340 models
OFF
ON
1 2 3 4 5 6
7 8 9
10
OFF
ON
1 2 3 4 5 6 7 8 9 10
Bank of
DIP switches
NOTE: The dark squares indicate the correct DIP switch positions.
(Lower bank of DIP switches)
120 °F (50 °C)
DEFAULT
140 °F (60 °C)
OFF
ON
1 2 3 4 5 6
No. 5 : OFF
OFF
ON
1 2 3 4 5 62 3 4 5 6
No. 5 : ON
540 model
Computer board
Upper bank of
DIP switches
Lower bank of
DIP switches
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
 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 6.6 GPM (25 L/min) for the 240
model, 8.0 GPM (30 L/min) for the 340 model, and
10.0 GPM (38 L/min) for the 540 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 charts on p. 64 to determine the likely flow
rates based on your local ground water temperature
and your desired outlet water temperature.
 Refer to the table to the right for typical
household plumbing fixture flow rates to determine
what the water heater can do in a household
application.