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9 Peter Beron Str, Pomorie 8000, Bulgaria
- 3 -
1.1.8
Protection against freezing of the whole heating system.
1.1.9
Closes by force the mixed valve in systems equipped with a room thermostat, despite
of its command in case the heating water exceeds its maximum assignation.
1.1.10
Controls the mixed valve in relation to the room thermostat. The room thermostat
option can be switched off, for example concerning large and multi-circuits systems.
1.1.11
Provides a domestic hot water preparation in a winter and a summer mode in relation
to the domestic hot water thermostat or timer.
1.1.12
Possibility for adjusting a priority, concerning domestic hot water preparation:
Same one with the heating of the premises or
Higher one by stopping the premises heating.
The customer is to adjust one of those two priorities.
1.1.13
Control a circulation pump, an actuator or a magnetic valve in the domestic hot water
circuit.
1.1.14
Automatically goes into a summer mode if the room thermostat or the sensor after the
mixed valve (“O”) does not send a command for a start in a period adjusted by the
customer of 12, 24, 36 or 48 hours after the last command is being sent.
1.1.15
The main distinguish of the summer mode is that the boiler cannot be started if the
return water temperature of the boiler is lower than the settled one T
kset
, as circulation
pumps P1 and P2 are switched off.
1.1.16
Automatically goes into a winter mode if a command of the room thermostat is
available or if the heating water temperature (measured by sensor O) is lower than
Thset.
1.1.17 STOP mode can be fulfilled by the controller in two ways: automatically with the fuel
run out or manual, indication about which appears on the display (fig.2) . Going back to the
previous mode is to be done only manually.
1.1.18
Periodically starting the circulation pump in the heating circuit and the mixed valve
during summer and STOP mode in order to prevent their blocking after a long stop.
1.1.19
Manual assignation of the heating water temperature.
1.1.20
Timer and a weekly programmer for an economic operation programming.
On figure 1 is shown functional heating systems, managed by the controller.
Figure 1
K
М
SV
P2
O
RТ
Boiler
Controller
Start
Stop
P1
А
Water
Heater
P3
V
