DORCHESTER DR-LA 110, Руководство пользователя, Страница: 49 / 64

Introduction
Instruction manual DR-LA 49
gis
7 Starting up and
shutting down
7.1 Introduction
Topics covered in this chapter:
•
Starting up ;
• Shutting down ;
• Heating cycle .
7.2 Starting up
Start-up the water heater as follows:
1. Fill the water heater. See chapter
4 Filling and draining .
2. Open the manual gas valve (see Figure 4.1 Installation diagrams ).
3. Switch on the power to the water heater using the isolator between the water
heater and the power supply.
4. Switch the water heater to "ON mode" by switching the ON/OFF switch on
the control panel to position I .
5. Set the desired water temperature using the control thermostat. See
paragraph 5.5 Control thermostat
If there is a heat demand, the water heater will run through a heating cycle. See
paragraph
7.4 Heating cycle .
7.3 Shutting down
You can:
•
Shut the water heater down for brief periods ("OFF mode") .
• Isolate the water heater from the power supply .
• Shut the water heater down for a longer period .
7.3.1 Shut the water heater down for brief periods ("OFF mode")
To shut the water heater down for a brief period, you must activate the frost
protection. Refer also to paragraph
2.3 The water heater’s heating cycle
With the frost protection you can prevent water freezing in the water heater.
Activate the frost protection by switching the ON/OFF switch on the control
panel to
position 0 .
7.3.2 Isolate the water heater from the power supply
The water heater should only be isolated from mains power in the correct way.
The correct procedure is as follows:
1. Shut the water heater down by switching the ON/OFF switch to
position 0 .
2. Disconnect the water heater by switching the isolator between the water
heater and the mains power supply to position 0.
7.3.3 Shut the water heater down for a longer period
Drain the water heater, if you are shutting it down for a longer period of time.
Proceed as described in paragraph
4.3 Draining the water heater .
gis