Freeze Prevention - TANKLESS EZ-101 User Manual

■ Carbon Monoxide Poisoning Prevention
Excessively high winds may cause the exhaust to back-flow. During high wind conditions, please
stop using the heater or it may lead to a dangerous situation.
In confined spaces the burning of gas consumes large amounts of air and produces gases
which contain certain amounts of carbon monoxide. Thus, the heater must be fixed in a
ventilated location. (See combustion air requirements below)
As this water heater is a flue type, if mounted inside a structure, a flue must be installed to
drain the waste gas out of the room. (See combustion air requirements below)
NG users must pay attention to the back-fire phenomenon when the gas pressure is
insufficient. This causes carbon deposits in the burner to increase and affects the normal use
of the heater. In such case, should the flame turn from blue to yellow, the amount of carbon
monoxide would increase. Stop using the heater and contact the gas company or the service
center.
The heater must always be installed vertically.
■ Prevent Eye injury.
Keep eyes away from the flame check window at a minimum safety distance of 12 inches
during ignition. If the first attempt of ignition fails, wait 10-20 seconds before the next
attempt for the gasses to clear.
■ Prevent no-water "dry Burning" of the Heater
After each shower, make sure that the flame is extinguished when the valve is closed. If the
flame still exists after the water valve is closed, something must be wrong with the heater.
Switch off the gas valve immediately and contact the service center. Otherwise the heater
may be damaged by overheating and then may cause an accidental fire.

■ Freeze Prevention

Under low temperature situations, drain the water remaining in the heater after each use
completely. Otherwise the water may freeze and expand which may internally damage the
heater. (See freeze warning below)
■ Reduce the Chance of Encrustation (mineral and sediment deposits)
We recommend a pre-filtration device be installed on the incoming water supply line to keep
the interior of the heater clean.
■ Dealing with Abnormal Conditions
● Stop the heater when there is strong adverse wind blowing which may cause the heater to
become inoperable.
● In case of abnormal burning (e.g. fire back, fire off, yellow flame or black smoke, etc.),
unusual smell, noise or other abnormal matters, keep calm and turn off the gas valve and the
heater switch. Then contact the service center or the gas dealer.
REMARKS: Since the heater has multiple safety protection functions it may turn off when a
problem is encountered, please refer to the "trouble shooting" table to solve the problem before
using again.
■ Replacing the D cells
After the batteries are used a period of time (about 6 months under normal use), the heater
wont ignite. Simply replace these batteries.
To replace the batteries please see above "cell installation" (fig. 8)