15 THE OPERATION OF THE DEVICE
1. VERSION GB
Following a longer period of being shut down, it may
happen that the device does not start up. In this case,
the following is to be checked and done:
o
Check that the taps of the gas, water and
heating system are open.
o
Check whether the heating system is sufficiently
filled up: the pressure has to be at least 1 bar.
o
Turn off and then turn on again the exterior
separator switch of the boiler.
o
Check the setting of the room thermostat, and
carry out on it a switching on and a switching off.
o
Check the setting of the boiler temperature
regulator, and set it at the desired temperature.
o
Put the winter/summer switch into winter position
(I).
In case of the GHISS B type, in the summer
setting, the boiler only produces hot water for use;
same as in case of GHISS R type if the indirect
container and the necessary electronic unit are
connected. In other cases the device does not
operate in the summer setting.
