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Operation
• VORT PIV QUADRO
Automatic functioning
VORT PIV QUADRO is designed for continuous operation and it allows the installer to set one of the seven
available speed settings. Each setting includes two values: one referred to normal speed and one referred to
boost speed. Once powered up, the appliance works at normal speed The boost speed can be selected via
the display or by means of a wall switch, if any (refer to "Use" section).
A temperature sensor in the appliance detects the air temperature in the loft (intake air temperature). This
detected temperature determines the operating strategy of the appliance, which is based on three configurable
variables:
- Thresh. temp: inlet temperature threshold (default value: 21°C, modifiable by the installer). When the intake
air temperature is higher than this threshold, the normal speed increases by 10% (boost speed not modified).
- Summer temp: Input summer temperature threshold (default value: 26°C, editable by the installer). When
this threshold is exceeded, the unit will switch itself automatically to "Stanby Mode" (unless it's in Radon
mode). «FAN STOPPED» signal appears on the display.
- Winter temp: Input winter temperature threshold (default value 10°C, modifiable by the installer). When an
electric heater (optional accessory) is installed (AUTO mode), "Winter temp" threshold value drives the turning
on and off of the electric heater.
Notice that also when the electric heater is not installed (or installed but in OFF mode) the unit will
never turn off when the intake air temperature drops below the winter temp in order to guarantee
continuous air circulation.
Configurable Variable
THRESH TEMP **
SUMMER TEMP **
WINTER TEMP
** in case the installer has set a temperature value of 24°C both for «Thresh temp» and «Summer Temp»
variables, the unit will will switch to Standby mode when intake air temperature has exceed '24°C'.
Other functions
•
QUIET: Although the product is very quiet, the user can set an hourly interval within which the unit's operation
in boost mode is disabled in order not to disturb the occupants. The user selects a time interval (from xx: xx
to yy: yy) within which the unit is inhibited from operating at the Boost speed, both for manual and automatic
selection (i.e. C-TEMP sensor intervention).
•
RADON: If this mode is activated, the unit will never switch to "Standby Mode", with the aim of mitigating
traces of radon.
• Recording of the unit operating time from first installation (Data-logger).
• One or two wall switches can be wired (refer to fig. 18 / not for RF models): one to select normal or boost speed
and one to switch the 500 W heater to AUTO or OFF mode if connected.
Wiring with smoke detectors
Smoke detectors already installed in the home can be indirectly connected to the appliance (refer to
the wiring diagrams in figs. 18-19). Following the electrical schematics for connections, in the event
of a fire, the unit will turn off automatically.
Note: In dwellings with a floor height of more than 4.5 m or with 3 or more floors, the unit must be wired
to a smoke detector to allow the unit to be disconnected in the event of fire (refer to the diagrams of
figs. 18-19).
18
Factory threshold value
21°C
26°C
10°C
Editable by installer
YES
YES
YES
Variable range
19°C÷24°C
24°C÷28°C
5°C÷15°C
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