John Wood Takagi - 710 - Manual (Page 21)

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4. Press the “INFO” button. After, make sure “oFF” blinks.
5. Press the “HOT” button or the “COLD” button to set
display to “on”.
6. Simultaneously press both the “BUZZER” button and
the “INFO” button to fix the setting.
7. Make sure display is no longer blinking.
8. Press the “ON/OFF” button to finish the setting.
9. Turn on power to the remote controller by pressing the
“ON/OFF” button again.
Lamp is ON to indicate that power is on
Flow
• The flow rate through the 710 is limited to a maximum of
34 l/min (9.0 GPM (US)).
• The temperature setting, along with the supply tempera-
ture of the water will determine the flow rate output of the
unit.
• Please refer to the temperature vs. gallons per minute
chart on pg. 40 to determine the likely flow rates based
on your local ground water temperature and your desired
outlet water temperature combination.
• Based on the CAN/CSA P.7 test method for measuring
energy loss of gas-fired instantaneous water heaters, the
710 is rated for 1136l/hr (300 GPH (US)) or 18.9 l/min
(5 GPM (US)) for Natural Gas, and 1204l/hr (318 GPH
(US)) or 20 l/min (5.3 GPM (US)) for Liquid Propane,
when raising the water temperature by 43C° (77F°) (from
14°C to 57°C (58°F to 135°F)).
• Refer to the chart below for typical household plumbing
fixture flow rates to determine what the 710 can do in a
household application.
Household Flow Rates
Appliance/Use
Flow Rate
l/min GPM (US)
Lavatory Faucet 3.8 1.0
Bath Tub 15 - 38 4.0 – 10.0
Shower 7.5 2.0
Kitchen Sink 5.5 1.5
Dishwasher 5.5 1.5
Washing machine 15 4.0
Taken from UPC 2006
Freeze Protection System
• This unit comes equipped with heating blocks to protect
it against damages associated with freezing.
• For this freeze protection system to operate there has
to be electrical power to the unit. Damage to the heat
exchanger caused by freezing temperatures due to
power loss is not covered under the warranty. In cases
where power losses can occur, consider the use of a
backup power supply.
• The freeze protection system will activate when the sur-
rounding and/or outside temperatures drop below 2.5°C
(36.5°F).
• Freezing issues can occur if cold air enters through the
venting into the heat exchanger, whether by negative
pressures within the installation location or by strong out-
side winds. It is the installer’s responsibility to be aware
of these issues and take all preventative measures. The
manufacturer will not be responsible for any damage to
the heat exchanger as a result of freezing.
• The manufacturer also highly recommends the use of a
back flow vent damper and/or converting the 710 to a
direct-vent unit to minimize the amount of cold air enter-
ing through the exhaust venting when the water heater is
off.
• If you will not be using your heater for a long period of
time:
1. Completely drain the unit of water. Refer to pg. 22.
2. Disconnect power to your heater.
This will keep your unit from freezing and being dam-
aged.
CAUTION: Only pipes within the water heater are protected
by the freeze protection system. Any water pipes (hot or
cold) located outside the unit will not be protected. Properly
protect and insulate these pipes from freezing.
Temperature Settings
• There are 8 preset temperatures that you can select
from by changing the DIPswitch settings on the computer
board.
• The temperature has been preset at the factory to 49ºC
(120ºF).
• If you desire to change the set temperature with
DIPswitches, please refer to the diagram below.