Service Instruction - HTW OBI Serie Manual De Usuario E Instalacion

Ignition
The h eat will be lit automatically as y ou turn on the water
fauce t. If no flame is ge nerated after ignition, pleas e close
the fa ucet and turn it on again after 1 0 minutes.
Note : If th e he ater is no t in operation for a long period, air
may enter the gas system. In such case, p lease rep eat the
ignition procedures above for several times.
Power adjustment
Gas regulation kno b ca n be used to adjust the volume of gas
circulation. This operation can a djust volume of gas circula-
tion and the temperature of hot water:
When gas supplied at rate pressure, the output power of maximum
gas is the rated output power. Please refer to the gas
consumption in the specification table.
Adjustment of water temperature
The temperature regulation knob can be used to ad just the
volume of water circulation. This operatio n can change temp-
erature of hot water. If you want to increase the temperature
of hot water, p lease turn the regulator of water temperature
clockwise . If y ou want to reduce temperature of hot water,
please turn the regulator of wate r temperature counterclock-
wise.
Please keep the sealing valve at the cold water inlet
completely open. Don't red uce the water circulation by
means of closing the valve.
Control panel
Low energy
High energy

Service instruction

Hot water with high temperature
Hot water with low temperature
Anti-freezing measures and putting out
of service
If you don 't use the heater for a long period, ple ase conserve
the heater in th e following ways:
Close the switch of the gas.

Extract the b atteries from the battery compartment.

Close the sea ling valve at the c old water inlet.

Adjust the temperature reg ulator to the lowest temperature .

Turn on hot water switch.

Ope n the empty valve to empty out the water insid e

Close the empty valve.

Failure of the flame during the operation
of the heater
When flame go es o ut during the o peration, the heater will
activate security thermostat. In this case the gas feedin g will
be cut off automatic ally. Only after the hea ter has cooled off
can it ignite once again:
Please rema in adequate ventilation of the exhaust outlet

with c aution.
Cool the heater off.

Turn off the water faucet and tu rn it on again.

If the heater fails to start the operation, please refer to the
general table o f failures in the troubleshooting chapter. If
there is still the failure, please make contact with its installer
for solution.
Anti-blockage function
The GWH have the anti-blockage function inside the exhaust
system. In case the exhaust duct being blocked, the thermostat on
the fume collector would shut off the gas of the GWH in order to
keep safety.
When the GWH accidently shut off, please check the exhaust duct
is blocked or not and keep it well exhaust. After that, you can use
the GWH again. Provided that you still could not use it. Please
contact the after-sale service or the professional maintainance.
The thermostat is for safety. Don't remove it or make it short circuit.
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