TANKLESS EZ-101 User Manual - page 8
Operation
1. Preparation before Ignition
Make sure the type of gas used complies with that stipulated on the label of this heater.
If mounted inside a building or structure, comply with combustion air requirements. (See
below.)
Turn on the gas valve.
Turn on the water valve, faucet or tap (making sure there is water flowing out), there will be a
"clicking" ignition sound. The burner will ignite and hot water flows out almost instantly. If the
water pressure is low, or the batteries are weak or not installed correctly, the water heater will not
operate.
After initial installation or a change of the gas cylinder, air may remain in the gas pipes and
it may require several ignition attempts to bleed the air out of the pipes before the gas can be
ignited. If a problem arises after normal operation, turn off the water immediately. Wait 10-
20 seconds for potential gasses to dissipate to avoid the possibility of an explosion.
Water Temperature Control
(1)
Turn the temperature regulator knob to control the water flow and its temperature. In
addition, you may turn the flame regulator to control the flame of the burner thus
controlling the hot water temperature.
When you turn off the water flow, the water heater will automatically shut off.
Test water temperature before use to avoid scalding. (Fig.10)
For the utmost safety, turn off the gas valve when not in use. (Fig.11)
In cold weather or in times when not using the heater for a long period, the heater should be
drained as follows:
1) Turn off the water valve.
2) Turn off the power switch.
3) Remove the water line(s) and allow the water to drain from the heater. You may also blow a
slight flow of compressed air to clear the internal components of water.
2. Flame level Control
In hot weather and higher ground water temperatures, you may wish to turn the flame level
switch (winter-summer switch) to the position of "warm", and only one burner will ignite.
In cold weather, and colder ground water temperatures turn the flame level switch (winter-
summer switch) to the position of "hot", allowing all three burners to ignite so as to insure
the required hot water.
Cautions for Safety
■ Gas Leak Prevention
It's best to install a gas leakage-warning device and of course a common carbon monoxide
detector.
Check whether the flame is extinguished after each use and do not forget to turn off the gas
valve (Fig. 11).
Always check all the gas pipe connections with soap suds to see whether it has gas leakage.
In case of gas leakage, shut off the gas supply and open the windows immediately. Under
such condition, switching on/off the electric power supply is strictly prohibited to avoid a
possible spark, explosion and fire. (Fig.12)
Only use the required type of gas for your type of heater, never mix them.
Check the gas hose regularly as it may age and crack after long periods of use. Replace if a
cracked hose is found. Under normal operation, the gas hose should be replaced yearly.
For LPG users, if the flame of the heater is not stable, it may be caused by the breakdown of
the pressure regulator connected to the outlet of the gas tank. In that case, stop using the
heater immediately and contact a service technician.
For NG users, if the flame of the heater is not stable, it may be caused by the instability of
the gas pressure. In that case, stop using the heater; otherwise it may be damaged or even