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43
19
EXTRA FUNCTIONS
Except for the functions described above, the
regulator
offers
an
number
of
other
functions.
19.1
Power supply decay
In the cases of power supply failure, the
regulator will resume the operation mode in
which it was before the failure.
19.2
Protection against freezing
If the boiler temperature drops below 5
°
C,
the CO pump will be enabled, thus forcing
circulation of the boiler water. This will delay
the process of water freezing, yet in the case
of great frost or shortage of power, it will not
protect the system against freezing.
19.3
Preventive cooling
This function consists in attempts to cool the
boiler before the regulator switches into
permanent
boiler
overheating
alarm.
Description an be found in point 18.2.
In the DHW = SUMMER mode, only
the
DHW
pump
is
enabled
preventively.
19.4
Function of protecting pumps against
stagnation
The regulator protects the CH, DHW, MIXER
and mixer servo pumps against stagnation.
It does so by activating them periodically
(every 167h 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) and in the STOP
mode.
20
REPLACEMENT OF PARTS AND
SUBASSEMBLIES
When ordering parts and subassemblies,
please specify necessary information read off
the rating plate. It is best to give the
regulator serial number. If the serial number
is not known, please specify the model and
type of the regulation, as well as the year of
its production.
The regulator serial number can be
found on a rating plate of the
executive module. The number of
the control panel is the serial
number.
20.1
Replacing mains fuse
The mains fuse is situated in the executive
module. It protects the regulator and the
devices fed by it.
Please use time-delay fuses, porcelain,
5x20mm, of nominal burnout current 6,3A.
Drawing 51 Fuse replacement, where: 1
–
fuse, 2
–
fuse
socket
In order to remove the fuse, push in its
socket with a flat screwdriver and turn it
counter clockwise.
20.2
Control panel replacement
Shall it be necessary to replace the whole
control panel, check compatibility of the new
panel software with the executive panel
software. Compatibility is maintained if the
first number of software in the control panel
and in the executive module is identical. In
the example below, the software versions are
compatible, as the first number „06” is the
same for both subassemblies:
Summary of Contents for ecoMAX 80 R1
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