First Heater Commissioning; Putting Out Of Service, Discharge - Nibe DRAZICE TO-20 Operating And Installation Manual

2.5

FIRST HEATER COMMISSIONING

Before opening the power supply, the tank must be filled with water. The process of first heating
must be executed by licensed professional who has to check it. Both the hot water outlet pipe
and safety armature parts may be hot.
During the heating process the pressurized connection water that increases its volume due to
heating must drip off the safety valve. In non-pressurized connection water drips off the
overflow combination faucet. When heating is finished, the set temperature and the actual
temperature of consumed water should be roughly equal. After connecting the heater to the
water main and electrical power system, and after checking the safety valve (following
the instructions attached to the valve), the heater can be put into operation.
Procedure of putting the heater into operation:
1. Check the wiring and water supply; check correct position of the thermostat sensors, they have to
be inserted all the way. The sensors must be inserted all the way in, first the operating and then the
safety thermostat.
2. Open the hot water valve on the combination faucet.
3. Open the cold water inlet valve to the heater.
4. As soon as the water starts running through the hot water valve, the heater is filled, and the valve
can be closed.
5. Prior to putting the heater into operation, screw on the front heater guard which closes the access
to the electric compartment of the heater.
6. When hot service water heating by electric energy, switch on the power supply.
7. When commencing operation, flush the heater until the cloudiness in the water is gone.
8. Make sure to fill in properly the warranty certificate.
2.6

PUTTING OUT OF SERVICE, DISCHARGE

If the hot water heater is put out of service for a longer time, or if it is not going to be used it
has to be drained and disconnected from the electric supply network. The switch for the supply
lead or the fuse cut-outs have to be shut off.
At places with permanent risk of frost the hot water heater must be drained before the cold
season starts if the appliance remains out of service for several days and if the power supply
is disconnected.
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