Fer FERSYSTEM TECH 31 C Instructions For Use, Installation And Maintenance page 7

FERSYSTEM TECH 31 C
are calling for heat.
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
The boiler is ready to function automatically whenever the external controls are calling for heat.
eco/comfort
reset
fig. 7 - Turning off
(part.7 - fig.1) for 5 seconds.
eco/comfort
reset
fig. 8
Cod. 3540U320 - 09/2009 (Rev. 00)
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