4
10.
WARNING:
Do not reverse the water
and/or gas connections, this will damage
the heat exchanger and can cause severe
injury or death from scalds. Following the
diagram below when installing your
MOBIUS water heater.
GENERAL
The MOBIUS Water Heater is an
instantaneous, tankless water heater designed
to supply endless hot water to your entire
household and/or commercial hot water needs
utilizing total efficiency. The principle behind
the MOBIUS Water Heater is simple. Once you
open a hot water tap, water flows through the
MOBIUS Water heater. Once a minimum of
0.75 GPM is achieved the flow sensor
automatically commands the computer to
electronically turn on the fan, activate the
electronic igniter and open the gas valve the
computer monitors the water temperature,
water flow rate, and gas flow the insure you get
the right amount of hot water with the correct
hot water temperature. After the burners are
ignited the “fire on” lamp is lit. Computer will
modulate gas supply to valve and water flow.
0.75 gallons per minute is required to turn the
burners on, after the burners are ignited, the
flow rate can be lowered to 0.6 gallons per
minute to maintain and still keep the heater on.
It is advisable to increase the cold tap rather
than decreasing the hot tap to adjust the water
temperature. Now as long as you have water,
gas and electricity, you will get an endless flow
of hot water. Open a hot water tap to turn on
your water heater. Close the tap to turn off
your water heater.
Temperature
The temperature has been preset at the factory
for. 120ºF (60ºC). The computer will
electronically control this temperature. Mix the
cold water with hot to get the water
temperature you desire. If desiring hot water
temperature want other than factory setting
temperature (120ºF), please purchase the
optional temperature remote controller, part
No. TM-RE10. With this optional part TM-RE10
you can set the temperature from 95 º F to 176
º F, please carefully read the instructions prior
to installation, failure to do so can damage the
temperature controller and/or the water heaters
onboard computer, which will void warranty.
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 hot water based on setting
temperature. Please refer to the temperature
and gallons per minute chart on the back of
this manual for your convenience.
Freeze Prevention Devices
This unit comes equipped with heater blocks to
prevent freezing which can damage the heat
exchanger. For this freeze prevention 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 warranty.
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.
The 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 warranty
and Takagi-USA will not be held responsible
for any damage occurring from such
environment. For this purpose a back flow
prevention kit (Part TK-TV03) is highly
recommended for areas with freezing weather,
to prevent freezing air from entering through
the exhaust venting when the water heater is
on standby which can damage the heat
exchanger.
