Usage - HTW Modulante A02 series Owners And Installation Manual

Prevention of poisoning:
When water heater is in use, oxygen inside the room where it is installed will be consumed,
so please keep the room well ventilated.
Please read carefully the manual and obey instructions of the installation personnel to
prevent any poisoning accident.
A ducting pipe must be installed and in a correct way, if necessary, please ask the help of
installation personnel.
For natural gas water heater, if the flame color turns from blue to yellow, it means gas
pressure is too low, please contact with installation personnel and local gas supply
company.
Maintenance
check and clean water heater every six months.
To observe flame regularly, if flame turns from blue to yellow and accompanied with black
smoke, then the water heater must be cleaned.
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Usage

2.1 Ignition
The water heater will automatically ignite when the outlet water valve is opened. If there is only
noise but without flame, immediately shut off the outlet water valve and wait 10 seconds then
reignite.
Notice: if the water heater is not used for a long time, then above operations shall be carried
out for many times so to exhaust out all the air inside the pipe then the water heater can be
successful ignited.
2.2 Adjustment of Heat Output
Gas flow can be controlled by adjusting the gas knob. Push and turn the gas knob to adjust the
heat output . You can adjust the heat output by adjusting the gas knob between maximum and
minimum flame.
If the knob rotates to 6 o'clock clockwise , the gas valve will be closed, the water heater
will stop supplying hot water.
Maximum flame
Minimum flame
To users
Stop burning
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