Installation Manual
Gas Fire Heater – Cod. 99962NA – November 2002
13
INSTRUMENT PANEL
Legend:
1.
ON/OFF SWITCH
2.
D.H. WATER TEMPERATURE
SETTING KNOB (40 - 60 °C)
3.
POWER INDICATOR
4.
D.H.WATER OPERATION
INDICATOR
5.
RESET BUTTON
PRELIMINARY OPERATIONS
Make sure that the gas cock and all water taps are closed.
Open the cock for the gas counter or for the liquid gas tank meter.
Open the gas cock (not supplied as standard) located immediately upstream of the heater on the gas intake pipe.
Make sure that the electrical power to the device is on, and check line, neutral adn earth.
Set switch 1 to
ON:
power indicator no.
3
will light up. (see fig. 1)
Open the hot water tap: the d. h. water operation indicator no.
4
will light up and the exhaust fan will turn on. The electronic
ignition board will turn on the main burner. When the water demand stops, the burner will turn off and the water heater will
wait for the next water demand.
If flame does not ignite, after 10 seconds the gas flow is interrupted and the water heater shuts down. The indicator no.
5
will light up.
Shut down requires manual resetting: to restore operation, wait ten seconds and then push reset button
5
. Re-ignition is
provided if the main burner accidentally shuts down. The heater will shut down if the burner does not resume operation
after ten seconds.
The solenoids will cut gas flow in the vent of electrical failure. When electrical power is restored, repeat the ignition
sequence.
If flame detection electrode (ionisation) does not work properly, gas flow will be cut and the unit will shut down. (Positive
safety).
These devices are built to operate with normal water pressure (not exceeding 6 bar), and are equipped with a water
temperature adjustment knob (40°- 60°C) see fig. 1 no.
2
.
MINIMUM
water temperature (40°C) is obtained by turning temperature knob 2 all the way to the left.
MAXIMUM
water temperature (60°C) is obtained by turning temperature knob all the way to the right.
Whatever the position of the temperature knob, the burner modulates according to flow rate (modulation of flow rate) To
put the device out of service, cut electrical power, set switch 1 to OFF and close the gas cock.
WARNING
Please ensure that the boiler in commissioned in line with all BENCHMARK BOOKLET REQUIREMENTS. Failure to do this
may in validate the guarentee.
Fig. 1
