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Only the pipes and heat exchanger inside the
Ÿ
water heater will be protected.
Any hot or cold water pipes located outside of the
Ÿ
unit will not be protected.
Proper protection and insulation of these pipes
Ÿ
will be required to ensure these are protected
from freezing.
1. Turn Water Off
2. Turn Gas Off
3. Turn Off The Power Supply
4. Drain Water
Hot
Drain
GAS
Cold
Antifreeze Tips
When the temperature is below 46.4 °F (8 °C)while
Ÿ
above 37.4 °F (3 °C), keep your water heater
staying plugged in a 120V 60HZ power supply,
the anti-freeze system will automatically heat up
to prevent the water heater from damages. No
manual work is needed.
If the machine is not used for a long time, or if
Ÿ
the ambient temperature is below 32 °F (0 °C) and
the machine cannot be kept powered with
electricity and gas, it is necessary to drain the
water from the water heater to prevent damage
due to freezing. And here is the process:
1. Turn off the gas shut-off valve.
2. Power off the water heater and unplug the
power supply to the machine.
3. Turn off the water supply shut-off valve.
4. Turn on hot water taps in the house, to release
the water and pressure in the pipes.
5. Screw out the drain screw on the hot water
outlet.
6. Remove the inlet water filter from the cold water
inlet and it's valve by turning counterclockwise.
7. Use a bucket to collect the residual water while
draining. It may take more than 10 minutes to
drain out the water thoroughly.
8. Securely screw the drain screw back in place;
and screw the inlet water filter back in place.
9. Before you use the water heater next time, plug
it into a 120 V 60 Hz power supply, and power on
the water heater, and then open the water
supply valve, hot water outlet valve, and the gas
valve.
CAUTION
Please note damages caused by freezing
Ÿ
are NOT covered under the tankless water
heater warranty as an industry standard.
Please make sure to take all the measures
Ÿ
to protect your water heater.
6.7 Minimum Load Adjustment
Method
Set the temperature on the controller to 35 °C and
increase the inlet water temperature so that the
outlet temperature is above 35 °C. It then proves
that the water heater is operating at its minimum
heat load.
6.8 Gas Pressure Test Position
Pressure measuring nozzle
The gas inlet has a pressure measuring nozzle. The
inlet gas pressure can be measured by unscrewing
the screw.
CAUTION
Please close the gas valve before
connecting the measuring instrument.
Avoid accidents such as fires.
Maintenance
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