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flow the insure you get the right amount of hot
water with right temperature hot water.
After the burners have 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.
Now as long as you have water, gas and
electricity, you will get an endless hot water.
Open a hot water tap to turn on your water
heater. Close the hot water tap to turn off your
water heater.
Normal Operation
To Turn on Your MOBIUS water heater.
1. Open a hot water tap.
2. Burners ignite. “Fire On” lamp is lit.
3. Mix cold water with the hot to get the
correct temperature water.
To "Turn off your Mobius water heater
1. Close the hot water tap
“Fire On” lamp extinguishes.
FLOW
The flow rate through the Mobius is limited to a
maximum of 9.6 GPM. The temperature
setting, along with the supply temperature of
the water will determine the flow rate the unit
puts out. Consult the flow charts on the last
page of this manual to determine the possible
outlet temperature and flow rate combinations.
Based on the United States Department of
Energy method of testing water heater output,
the Mobius is rated for 370 gallons per hour, or
6.0 GPM, at a 77
°
F rise above the inlet
temperature. Refer to the following chart of
typical household flow rates to determine what
the Mobius can do in a household application.
Remember that for bathing, cold water will be
mixed for a comfortable temperature,
increasing the flow output rate.
Start Up
Once you have properly installed the unit,
check the gas and water connections for leaks.
Check for proper ventilation and combustible
air to the heater.
Purge the gas and water lines to remove Air
pocket.
Then follow these steps to turn on your unit.
1. Close the manual gas control valve located
on the gas line.
2. Fully open the manual water control valve
on the water supply line.
3. Open a hot water tap, to verify that water
will flow to that tap. Then close the hot
water tap.
4. Fully open the manual gas control valve
installed.
5. Turn on the 120 volt 60 Hz power supply to
the Flash Water Heater.
6. Now you are ready to enjoy hours of
endless hot water.
Manifold Gas Pressure Port
Household Flow Rates
Appliance / Use
Flow Rate
(GPM)
Lavatory Faucet
1.0
Bath Tub
4.0
Shower
2.0
Kitchen Sink
1.5
Dishwasher
1.5
Washing Machine
2.0
Taken from UPC 1997
