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OLIMPIA SPLENDID 9899 Thermostat User Manual
ECONOMY FUNCTION
The “Economy” function may be used to activate a temporary energy saving mode by reducing the
current set-point temperature by a single (configurable) step when in heating mode, or increasing it
by the same step when in cooling mode. The value of this reduction step may be set-up in parameter
P18: when this value is set to 0.0, the Economy function is disabled.
To activate Economy mode, press the
button, see “Description of commands”.
The Economy mode function can also be activate remotely in centralised mode, even when using
multiple thermostats, via the inputs ton terminals 3 or 4 (see parameters C17 and C18).
Since the thermostat is sensitive to changes in the signal status, and not level, use the
to change the activation status of the Economy function, even when forced by the centralised signal.
When the Economy function is active ( icon on), the fan speed is limited to the first speed or the
button
value set-up in parameter C11 for proportionally controlled fans.
DIRTY FILTER WARNING FUNCTION
Fan-coils, and other devices that include a fan, are often equipped with an air inlet filter, which must
be cleaned at regular intervals. This thermostat notifies the user when tit is necessary to clean the
filter by activating the “Dirty filter warning” function.
This function is activated by setting up the time-to-maintenance value in parameter P25. The ther-
mostat monitors the fan operating time and, when it reaches the threshold set in P25, the
icon flashes on the display. Once the filter has been cleaned, to reset the warning and the time
counter press the button for 10 seconds, until the filter icon disappears from the display.
filter
TEMPERATURE REGULATION
This thermostat may be used to drive both the valves and the fan in proportional mode so as to
regulate the room temperature for maximum comfort and energy saving. It is, however, necessary
set-up some parameters differently for each individual environment in order to achieve more precise
regulation.
The parameters responsible the quality of the regulation are as follows:
- Proportional band: C03 and C04
- Integration time: C05 and C06
There are two parameters are available for both settings so that the user can set-up different values
for heating and cooling mode. The proportional band, expressed in °C or °F, represents the differ-
ence between the set-point value and room temperature that ensures the valve is fully opened by
the regulator and/or switches the fan on at maximum speed. The narrower the proportional band,
the more rapidly the system reacts to variations in the room temperature. If the proportional band
is too “narrow”, it may cause the room temperature to oscillate, or system instability. If this value
is too “wide”, on the other hand, it may be impossible to reach the set-point temperature. If the
integration time is set to zero, no integral action implemented, meaning that the regulation is purely
proportional (P type). When the integration time is set to a value other than zero, P+I (Proportional
IT - 17
| General | Details |
|---|---|
| Name | OLIMPIA SPLENDID 9899 Thermostat User Manual |
| Make | OLIMPIA SPLENDID |
| Language | English |
| Filetype | PDF (Download) |
| File size | 5.17 MB |
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