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2. Operation
b) Ventilation:
Please make sure the boiler room is well ventilated. The air supply must be as free of dust as possible.
c) Flue:
Please have the chimney sweep check the flue, and, if necessary, clean it.
2.2 Check before initial start-up
a) System pressure (heating water pressure):
The system must be filled and vented. With the system cold, pressure should be at least 1.0 bar (maximum 1.8
bar) – Fig. 9 If you have any questions, your installer will gladly answer them.
Fig. 9 Filling the system
Pressure gauge (system pressure)
Filling and evacuation cock
2.1.4 Heat shield (accessory FIRE 023)
Heat radiated from the front window can lead to unwanted heating of the room where the unit has been set up
when domestic hot water is being heated during the summer. If you do not want the room to be heated, you can
significantly reduce the amount of heat radiated using the patented heat shield (accessory Fire 023).
The air-to-water ratio without a heat shield is approx. 15 : 85 % and with a raised heat shield approx. 9 : 91 %.
The heat shield is located in the combustion chamber. This can be pulled up using the supplied Allen key and
hooked into the lugs on the sides of the combustion chamber cover plates, Figs. 7, 8.
Fig. 7 Hooking in the Allen key Fig. 8 Pulling up the heat shield and hoo-
king it into the lugs on the sides
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