First Use; Maintenance - HTW Modulante A02 series Owners And Installation Manual

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First Use

The first-time use of water heater shall be carried out by professional technician
personnel.
Open battery box and put two batteries (model. LR20, 1.5V) inside.
Open hot water valve to let water run out and then shut off it.
Open gas inlet valve.
Turn the heat output knob (gas knob) to maximum position.
Open hot water outlet valve.
Observe the flame.
For first-time use, please refer to "Nozzle specification" shown in "Technical Data" for
rated pressure.
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Maintenance

Maintenance of gas water heater shall be carried out by professional technician
personnel.
Obey national maintenance rules.
Before carrying out maintenance, the water heater shall be cooled down.
Must use specific spare parts supplied by
accept any claims.
7.1 Connection to Gas
For LPG gas water heater: if using rubber hose to connect to gas circuit, please
replace the rubber hose every year.
Use soap-suds to check gas connectors to see if there is any leakage.
7.2 Heat Exchanger
Shut off gas inlet valve.
Dismantle the end cap of gas water heater.
Shut off water inlet valve.
Open hot water outlet valve.
Open drainage valve to release the water.
Disassemble heat exchanger from the water heater.
Use a paint brush to clean the fins of the heat exchanger.
Use water spouts to clean heavy dirt.
7.3 Burner
Dismantle the burner off the water heater.
Use a paint brush to clean its surface and top, and blow away the dust on the burner fins.
7.4 Water Inlet Filter
Dismantle water pipe from cold water inlet of the water heater.
Take off and clean the cold water inlet filter.
To technician personnel
, otherwise, we do not
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