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Wiring for integral clock and/or external controls
N
L
2
1
3
1
X1
X2
1
2
3
4
5
DMF03
6
7
8
9
10
11
12
X4
4. COMMISSIONING AND TESTING
4.01 Checks to be carried out before starting up for the first time
When starting the boiler up for the first time check:
• that the gate valves between the boiler and central heating system are open;
• that the central heating system is filled and vented;
• that there are no gas or water leaks from the central heating system or boiler;
• that the electric connections are correct and the earth wire of the boiler is connected to an efficient earthing
installation and a 3amp. fuse is fitted to the isolator;
• that there are no flammable liquids or materials near the boiler;
4.02 Starting up the boiler
• Open the gas cock upstream of the boiler.
• Vent air present in the pipe upstream of the gas valve.
• Turn on the electrical supply to the boiler.
At this point, choose whether the boiler is to be used for central heating and domestic hot water production or for
domestic hot water production only.
4.03 Shutting down
Close the boiler isolation gas cock and turn off the electricity to the boiler.
Important: If the boiler is not to be used for lengthy periods during the winter, to avoid frost damage, you are
recommended to drain the water from the circuits (domestic hot water and central heating). Alternatively, drain the
domestic hot water system only and add special anti-freeze to the central heating system.
DOMINA 102 DGT
15
14
13
12
11
10
8
7
6
5
4
2
1
X5
X6
10
11
12
13
14
15
1 2 3 5
CLOCK
62
X7
1
2
3
4
5
6
1
2
3
4
5
6
7
8
External control i.e. Room
Stat or programmable
room thermostat
72
7
8
9
10
Fig. 21b
21
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