17
Others
17.1
Power supply decay
In the cases of power supply failure, the
regulator will resume the operation mode in
which it was before the failure.
17.2
Anti-freezing protection
In case the boiler temperature has fallen
below 5
C, CH pump is activated to force
boiler water circulation. It delays water
freezing process, but in case of very low
temperature or lack of power it may not be
sufficient to protect the equipment from
freezing.
Note: This function must not be
the only anti-freezing protective
measure! Apply other methods
too. Regulator manufacturer is not
liable for anti-freezing related
damages.
17.3
Function of protecting pumps
against stagnation
The regulator protects the CH, HUW and
mixer circuit pumps against stagnation. It
does so by activating them periodically
(every 167 h for several seconds). This
protects the pumps against immobilization
due to sedimentation of boiler scale. For this
reason, the regulator power supply should be
connected also when in the boiler is not in
use. This function can be enabled also when
the regulator is turned off, via keyboard
(regulator in STAND-BY).
17.4
Bunker feeder
After connecting an additional B module, the
regulator can cooperate with the low fuel
level sensor in the container (fuel supply
from the bunker). After the senor activates
(the contact opens), the regulator will
activate the additional feeder for an
additional feeder operation time
,
in order to
refill the fuel container. This parameter is
found in:
Service settings
→
Burner settings
If the
Additional feeder operation time
is set
to zero, the additional feeder is deactivated.
17.5
Replacement of mains fuse
Mains fuses are located in each working
module. They protect the regulator and other
connected
equipment.
In
case
of
replacement, use 6.3 A, 5x20mm ceramic
time fuse. To remove the fuse, press down
fuse holder using flat screwdriver and turn it
in CCW direction.
17.6
Replacement of control panel
It is not recommended to replace only the
control panel as the software in the panel
must be compatible with the software in the
rest of the regulator.
18
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