Modes Of Operation; Fan Speed - Sunsystem BURNIT WBS Active Serie Instrucciones De Montaje Y Uso

TECHNICAL PASSPORT INSTALLATION and OPERATION MANUAL
off and the CH pump will switch on. The WUW pump will
restart if the temperature decreases to 50°C.
10.8. Fan force
This function allows to choose the operations speed of the
fan. Range of regulations is between 1 and 10 (one can
assume those are the gears of the fan). The higher the gear
the faster the operation of the fan, whereas gear 1 is the
minimal speed and gear 10 is the maximal speed. Change
of gears is being done by the means of PLUS and MINUS
buttons.
The fan always starts up with the maximal speed which
allows it to start operation even with some amount of dust
present in the engine.

10.9. Modes of operation

A proper symbol for each operation mode is shown in the
lower, right corner of the display. Depending on the mode of
operation a specific letter is displayed:
42
CH
D – house heating, B – boiler priority,
R – parallel pumps, L – summer mode.
10.9.1. House heating priority
If you select this option, the controller will switch to the
house heating mode. The central heating pump starts to
run above the pump activation temperature (set to 35°C
by default). Below this temperature (minus central heating
hysteresis of 2°C), the pump is shut off. While in the house
heating mode, the letter D is displayed in the bottom right
corner of the main screen.
C | 55 C *
0 0
SET D

Fan speed

WORK MODE
10.9.2. DHW Priority (WUW priority)
Activating the DHW priority will cause the regulator to switch
into the water heater priority mode. In this mode, the WUW
pump is activated until the set WUW temperature (domestic
hot water temperature) is reached. Then, the WUW pump is
shut off and the CH pump is activated. The central heating
pump will run until the DHW temperature drops below the
set point value (and the WUW hysteresis); then, the CH
pump is shut off and the WUW pump is activated.
In this mode, the fan is operated as long as the temperature
is below 62°C to prevent the boiler from overheating. The
domestic hot water priority function consists in that the
consumption water is heated up before heating up water in
radiators. Change of the set DHW temperature can be done
by pressing Exit button (holding down for a few seconds).
The display will show the WUW temperatures screen for a
few moments. Set temperature can changed with buttons
UP and DOWN. After few seconds the display will return to
its previous state. When WUW priority mode is on the main
the letter B is show in the lower right corner of the display.
ATTENTION: The boiler should have non-return
valves mounted on the central heating pump circuit
*
and the domestic hot water pump circuit. A valve
mounted on the WUW pump will prevent domestic
hot water from being drawn from the water heater.
10.9.3. Parallel pumps
In this mode, the pumps start to run in parallel above the
pump activation temperature (set by default to 35°C).
The central heating CH pump runs continuously, while the
domestic hot water WUW pump stops after the set point
temperature is reached in the boiler; it then restarts when
the temperature drops by 2°C. Change of the set DHW
temperature can be done by pressing button EXIT (holding
down for a few seconds). The display will show the WUW
temperatures screen for a few moments. Set temperature
can changed with buttons UP and DOWN. After few seconds
the display will return to its previous state.
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EN