Electrical Installation - IVT 495 TWIN Manual To Installation, Commissioning And Maintenance

INSTALLER

Electrical installation

Connecting the unit
NOTE: High current wiring and low current wiring must be kept at least
150 mm apart. Only an authorised installer may install the unit and
change its power settings.
Placement and connection of sensors
Outdoor sensor
(art. no. 240650)
The sensor is positioned on the north or east side of the house. It must be
protected from direct sunlight, ventilation air or anything that can affect
the temperature measurement. Seal the cable conduit so that warm
indoor air cannot penetrate and affect the sensor. Connect to terminal
pos. GT2 with 2-wire low current cable.
Room sensor
(accessory, art. no. 240650-1)
Place the sensor centrally in the house, e.g. in a hall with an opening to a
living room etc. The sensor must be positioned to avoid direct sunlight or
other heat sources such as a kitchen or laundry room. The conduits must
be sealed here as well to stop warm air from penetrating and affecting
the sensor reading. Connect to terminal pos. GT5 with 2-wire low
current cable. The sensor is best placed on the bottom floor of a house
with two floors. The radiators in the room where the sensor is placed
must not be equipped with thermostats. Should there be thermostats then
ensure they are always open. The room sensor must be activated by a
service engineer.
EXT IN GT3-4 GT2 GT5 GT1 GT3-1 GT3-2 GT3-3
Markings on the circuit card can
differ from those illustrated. However,
the markings above the figure
applies.
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IVT 495 TWIN 9518799