A.O. Smith DURA-Power DRE-52, Installation And User Instructioins

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2.2 Putting into operation
2.2.1 Filling the Device
1. Fit the drain valve and check
whether it is closed.
2. Open cold water valve to the boiler
and open all valves at hot water
drainage points for bleeding. The
device is
fi lled as soon as cold water
fl ows at all drainage points.
3. Reclose all valves at hot water
drainage points.
2.2.2 Putting Into Operation
The device must NEVER be put into
operation with a closed cold water feed.
1. Check whether the device is fi lled
with water and whether all electrical
connections to the device are also
actually properly connected.
2. Check whether the cold water inlet is
open.
3. Check whether the device is free of
voltage. Open the door and remove
styrofoam cover located beneath
it. Now the regulating thermostats
are accessible. The regulating
thermostats can now be set to the
desired temperature by turning the
selection knob with a screwdriver.
4. Set the desired temperature on
the regulating thermostat (see
table). When leaving the factory the
temperature is set at 60°C.
Temperature in °F Temperature in °C
120 49
130 54
140 60
150 66
160 71
170 77
180 82
5. Re fi t the insulation and close the
door.
6. In the case of a fi xed connection
turn on the mains switch or in other
cases place the connector in the
stop contact. The device is now
switched on and it will continue to
work automatically.
2.2.3 Putting out of Operation
1. For short periods: take the connector
out of the stop contact or where
there is a
fi xed connection switch off
the mains switch.
2. In addition to the operations in
point 1, for longer periods it is
recommended to shut off the water
feed pipe in connection with the
danger of frost and once the device
has cooled down, to drain off the
water by connecting a drainage hose
to the drainage valve and opening
it. Also open the closest hot water
drainage point for ventilating the
tank. Take care that the feed pipe
and inlet combination cannot freeze.
Drain the feed pipe as necessary
and check whether all other pipes
are empty.