Commisioning; Filling The Water Heater; Putting Into Operation; Use - A.O. Smith BTI 65 G Installation And User Instructions Manual

3. FOR THE usER
3.1

commisioning

Warning
Installing and commissioning of this
water heater should only be carried
out by a qualified competent heating
engineer.

3.1.1 Filling the water heater

1. Close the drain tap;
2. Open the cold water tap to the water
heater and open all taps where hot
water can be drained for de aeration.
The water heater is filled as soon as
cold water flows from all taps;
3. Close all hot water taps.

3.1.2 Putting into operation

1. Check to see if the heater is filled
with water by running a little to waste
from a hot water tap connected to the
heater;
2. Check wether the ON/OFF switch is
in OFF-position;
3. Ensure gas supply is fully purged of
air and turn on gas cock;
4. Ensure that power has been correctly
supplied to the unit. Use a voltage
tester to check that the live is to "L"
and neutral to "N". (Flame detection is
phase sensitive);
5. When first starting, the controller can
be in the lock out condition: depress
the reset button to free the control.
(After manual reset, an extended
prepurge/waiting time will occur);
6. Switch the ON/OFF switch into ON
position. If the pilot fails to ignite
within 25 seconds the controls will go
to lock out and the reset button will
need to be reset (wait 15 seconds
before attempting reset). It may be
necessary to repeat the lighting
sequence a number of times on the
initial light up if all the air has not
been purged from the gas supply;
7. The main burner pressure has been
factory set but should be checked
once normal operation is established
(see 'Ratings' for settings);
8. Set the temperature regulator
to the required setting (see 'De-
scalcification').
3.1.3

use

The appliance is under water supply
pressure (maximum 8 bar). The amount
of cold water that is added is equal to
the amount of hot water used. The gas
control block automatically regulates the
gas supply. The main burner will ignite as
soon as a reduction in water temperature
is sended by the thermostat. The main
burner will shut down as soon as the
preset temperature is achieved.
At high water temperatures there is more
scale buildup in the appliance. It is for this
reason that it is recommended to place
the temperature control knob in position
of 60 °C as the accumulation of scale will
be reduced.
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