Astra H-31,5 ES Manual de instalación y explotación - Página 19

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- if the temperature after two hours from the beginning of heating is T≤45
C;
o
- if the temperature drops below 45
C and does not increases within the period of 30 min.;
- if during the operation of boiler the pump is switched off for longer than 1 hour. (it is not applied when the
pump is put on the constant operation ).
The state of operation „heating off" switches off the fan and switches on the corresponding light signal. This
state can be left by switching off the voltage L2 or the supply of the electricity to the control device.
Programmed output
Depending on the design of the boiler the programmed output can control air valve or electric heating. If there is
installed electric heating it can be swicthed off automaticaly when the boiler is on the mode „heating off". In
order to activate or desactivate this control it is necessary to keep pressed the key "P" 7. There will apear "On"
at the indicator (activated) ir "OF" (switched off). The servicing personnel set the temperatures of switching
on/off for the electric heating referring to the characteristics of rthe heating system.
Control device No.: . . . . . . . . . . . . . .
Date of installation: . . . . . . . . . . . . . . . . . . . . . . .
* - depending on the design of the boiler
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