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OPTIMAX HE 31 C
Turning off
Press the
(part. 7 - fig. 1) for 5 seconds.
When the boiler is turned off with this key, the p.c.b is still powered, heating operation is disabled and
the display is off however the frost protection will still be active.
To totally isolate close the gas cock ahead of the boiler and disconnect electrical power.
To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all
water from the system.
To turn boiler on again, press
If there is no heat demand, the display shows the actual water pressure (bar/10).
The boiler is ready to function automatically whenever the external controls are calling for heat.
fig. 6 - Turning off
(part.7 - fig.1) for 5 seconds.
fig. 7
7
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