TANKLESS EZ-101 User Manual - page 11
■ Preventing Overheating - Scalding
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After shower, or when the water temperature control is still at “high” position, be careful of
the temperature of the water at the beginning and ending of shower, as it may remain high and
scald your skin.
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During or right after use, do not touch any part of the heater other than the control knobs,
especially the parts around the flame indicator window and exhaust components. These parts
are hot.
■ The following Situations Are Normal
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When the water pressure is lower than 8 Psi, the heater cannot be ignited.
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The drain valve is dripping. When the water pressure is too high, the check-valve will release
the water so as to reduce the pressure to protect the heater.
●
When the heater is supplying hot water to several points at the same time, the hot water flow
will be reduced, or even no hot water will come out. In this case, the GPM capabilities of the
heater are being exceeded. This heater is not designed for whole home use. It will run one hot
water source at one time.
●
During use, if the heater is operated for more than 20 minutes, the flame will automatically
turn off due to the 20-minute timer protection of the heater. (To restart, simply turn off and
back on the faucet.)
●
When the voltage of the D cells drops below 2.1V, the heater will not ignite, Please replace
the batteries.
■ Maintenance
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Check the gas hose/pipe regularly for any defects. Contact service center for any doubt.
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Clean the water filter screen regularly.
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Check for water leakage regularly.
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When the flame turns from blue to yellow with black smoke, stop using and contact the
service center immediately for help.
●
Every 6 months contact qualified professionals to check whether the heat exchanger and
burner are clogged. Every 6 months, it may be necessary to flush the heater internally.
●
Always keep the cover of the heater clean.
FREEZE WARNING
This water heater holds cold water in its heat exchanger and water valves when not in use.
Because of this, any cold air that comes down through the unit's vent pipe is capable of freezing
these components. We simply cannot control how this unit is mounted, atmospheric conditions
of the location of installation, or type of use (indoor or outdoor, heated or unheated building),
and improper precautions taken by the user and therefore, simple common sense tells us that we
cannot be held responsible for reverse-draft caused or any other type of resulting internal freeze
damage.
When all requirements are followed, this unit will operate properly and safely. However, there
may still be a risk of freezing due to negative draft if all the combustion appliances in the area
are not being supplied with a sufficient amount of make-up combustion air. A wood stove or
furnace can draw its makeup air backwards into the vent pipe if this heater. This cold infiltrating
air is capable of rapidly freezing the cold water held inside this heater’s heat exchanger.
More make up air is the solution for preventing a freeze-up.
Supplying more combustion air for all combustion appliances is the solution.
A HVAC specialist should be used to design solutions for providing more make-up air if
necessary. Observe the following instructions concerning combustion air.