SATK40 & Procyl
®
9
Operating Cycles
Domestic water generation:
When a tap or shower is turned on the domestic water cycle is
activated, due to the storage thermostat intervention.
To restore the temperature of the stored water in the cylinder
the unit begins repeated 10 minute cycles.
After the first 10 minute cycle has been completed a second
cycle begins again supplying only the cylinder with heat
followed by a third or fourth until the water in the cylinder has
reached the set temperature.
To enable the division of the 10 minute cycle, to apportion the
time for heating and DHW, dip switch 5 needs to be on.
By altering P1 a portion of each 10 minute can be directed to
the space heating circuit, for example 9 minutes to the cylinder
and 1 minute to the heating circuit or 7 minutes to the cylinder
and 3 minutes to the heating circuit.
When the specified domestic hot water temperature is reached,
the circulation pump switches off and the modulating valve is
closed again.
The domestic water cycle, when active, is indicated by the
steady yellow DHW LED while the symbol is blinking.
The temperature of the hot domestic water within the indirect
cylinder should be set using the cylinder thermostat (only
supplied with the Procyl
®
option).
Heating cycle: Set point regulation
When space heating is requested by the room thermostat, the
circulation pump is powered while the modulating valve is
opened gradually until the set point temperature is reached.
At the end of the heating cycle, the circulation pump comes to
a stop and the modulating valve is closed.
The active heating cycle is signalled by the yellow CH LED
which comes on.
The heating cycle temperature set point can be set using
trimmer P2 and shown on the display.
Under floor heating function: at LOW temperature setting
This cycle aids the drying of the underfloor heating screed at
low temperatures. This function can only be activated and
executed if there are no faults
It can be activated by pressing and holding the RESET button
for 8 seconds.
The yellow CH LED blinks while the under floor heating drying
function is in operation.
The function has a duration of 240 hours, and is carried out by
simulating a request to run in heating mode starting from a set
point of 25°˚C and rising in regular intervals to a temperature
of 45˚C.
Once the maximum set point has been reached, the function is
executed, following the same procedures, in reverse (from the
maximum set point to the minimum set point).
This function has priority over heating and hot water cycles,
and can be suspended at any time by pressing and holding the
RESET button for 8 seconds.
Optional functions
- to activate/deactivate the optional
functions the electric power supply must always be turned off.
Operating Cycles
25
8 seconds
60
P2
P1
––
P2
P1
ON
1
2
3
5
6
4
