Temperature
The water temperature has been set on the computer by the factory to be Maximum 140º F
(60º C). In order to achieve lower water temperatures, cold water needs to be mixed in with
the hot, or an optional part No. TM-RE10 can be installed allowing manual adjustment of the
output temperature for lower or higher.
WARNING:
Temperatures above 125º F (52º C) can cause severe burns or death from
scalding. Children, disabled and the elderly are at high risk of being injured. Feel the water
temperature before bathing or showering. Do not leave children, disabled, and the elderly
without supervision.
MOBIUS water heater will produce a flow rate of hot water that is depend on the inlet water
temperature and the setting on the TM-RE10. Refer to the flow vs. temperature chart for the
output capabilities end of this installation manual.
Freeze Prevention Devices
This unit comes equipped with heaters that discourage the unit from freezing, but for this
freeze prevention system to operate there has to be electrical power to the unit.
The freeze prevention devices will not work if the electrical power source is
disconnected.
The unit has been rated for temperatures down to 5º F (-15º C) in a wind free
environment. A wind chill factor will cause the unit to freeze at temperatures above 5º F (-15º
C). Do not install the water heater in an area with extremely cold weather. This will void your
warranty and Takagi - USA will not be responsible for any damage that occurs.
CAUTION: The pipe heaters are located on the MOBIUS Water Heater only. Any hot or
cold water pipes located outside of the unit will not be protected. Properly protect and
insulate these pipes from freezing.
Winterizing
If the heater will not be used for a long period of time or if the temperatures will drop below 5º
F (-15º C) with the wind chill factor, turn off the heater and drain the unit of water. This will
keep it from freezing and being damaged. Follow these instructions carefully:
1. Turn off the power supply to the MOBIUS Water Heater.
2. Close the manual gas control valve located outside your heater.
3. Close the manual water shut off valve located on the water supply line.
4. Open all hot water taps in the house. (Bathroom, kitchen, laundry room, etc.). When the
water flow has ceased, close all hot water taps.
5. Have a bucket or pan available to catch the water as it drains from the T-M1 drain plugs.
Remove the drain plugs to drain all the water out of the unit.
6. Let sit for 5 minutes.
7. Securely screw the drain plugs back into place.
To restart heater, follow these steps:
1. Make sure all hot water taps are closed and the drain plugs are securely attached.
2. Purge the water line of debris.
3. Turn on the manual water control valve located on the water supply line.
4. Open all the hot water taps to verify water flows to the taps. Then close hot water taps.
Summary of Contents for MOBIUS
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