Installation, use and maintenance guide
COMPACT S22
–S26–S32 EVO5
Page
26
ENG
When is it important to use the CHRONO function?
In systems configured like the diagram on the right, where the appliance is connected
directly to the system, without the use of external chronothermostats. In this case it is
necessary to set the hour programs to prevent the appliance from being stressed by
uncontrolled ON and OFF cycles. In addition we recommend using the generator in AUTO
mode to activate the automatic modulation based on the target temperature setting.
If the dwelling is fitted with zone valves, with this type of installation, it is mandatory to
deactivate the valves by opening them completely.
Consequently the dissipation of heat, at least equal to or greater than the quantity of heat
generated by the appliance and transmitted to the water when running at the minimum
power level must be guaranteed at all times.
6.5 LEVEL: OPERATING LEVEL SETTING
The appliance must be energised and the I/0 switch in position “I".
Your appliance is delivered with an excellent program installed that favours combustion efficiency; the program is called
LEVEL 1
.
However, if you are using pellets with a higher than normal incidence of residues after combustion in the brazier, it is possible to
select alternative levels:
LEVEL 2
is an operating program that accelerates the speed of the smoke suction unit in proportion to all the combustion
power levels. This level must be set when the user notices a weak, high and very dark flame. Attention: this
modification does not authorise the use of below-standard pellets, or no vacuum in the flue outlet.
If using loosely compressed pellets, you could select:
LEVEL 0
:
is an operating program that decelerates the speed of the smoke suction unit when using loosely compressed
pellets and/or when the flue outlet has a very high vacuum, over 2 mm water column (20 Pascal).
The pellet consumption value remains unchanged regardless of the selected operating level. These variations will only change the
rotation of the smoke suction unit in the WORK stage (see para. 6.10), all the other stages will not undergo any changes.
Select the required Level by acting as follows:
1) Press the
Menu Button
three times quickly and the following box will appear:
After a few seconds the following screen will appear on the display:
2) To change the operating level, hold down a
Scroll Button
while simultaneously pressing the other
Scroll Button.
To set the desired level simply press the
Menu Button
several times until the initial screen will appear on the display.
The level selection can be made with the appliance
OFF
or
ON
. If the change is made while the appliance is running
the difference in the flame will be apparent. It is mandatory to pay particular care when selecting the most appropriate
operating cycle for your installation. After the selection of the operating cycle a thorough cleaning of the brazier is
mandatory.
6.6 THERMOCONTROL: CONTROLLING A PUFFER
The appliance must be energised and the I/0 switch in position “I".
This function enables you to control the operating temperature of a stratification puffer through the use of two sensors PT 100
(optional) connected to the respective terminal block on the electronic board (see para. 11).
ATTENTION:
If one or both optional sensors are not connected to the appliance or are interrupted, it will not be possible to view
and therefore activate the THERMOCONTROL function.
When this function is activated the appliance automatically controls the ON/OFF cycles based on the activation temperatures set by
the user.
The puffer must have an appropriate capacity. We recommend a capacity ranging between a minimum of 20 dm
3
to a
maximum of 50 dm
3
for every kW of maximum power supplied to the water by the appliance.
