OUTSIDE SENSOR
Install the outdoor temperature sensor (BT1) in the
shade on a wall facing north or north-west, so it is unaf-
fected by the morning sun for example.
Connect the sensor to terminal block X6:1 and X6:2 on
the input board (AA3). Use a twin core cable of at least
0.5 mm² cable area.
If a conduit is used it must be sealed to prevent condens-
ation in the sensor capsule.
AMBIENT SENSOR
The ambient sensor (BT28) is placed in the cable gland
in the outside air damper with a protrusion of 10-20 mm.
Connect the sensor to terminal block X6:7 and X6:8 on
the input board (AA3). Use a twin core cable of at least
0.5 mm² cable area.
ROOM SENSOR
F730 is supplied with a room sensor enclosed (BT50).
The room sensor has a number of functions:
1.
Shows current room temperature in the display on
F730.
2.
Option of changing the room temperature in °C.
3.
Provides the option of fine-tuning the room temper-
ature.
Install the sensor in a neutral position where the set
temperature is required. A suitable location is on a free
inner wall in a hall approx. 1.5 m above the floor. It is
important that the sensor is not obstructed from meas-
uring the correct room temperature by being located,
for example, in a recess, between shelves, behind a
curtain, above or close to a heat source, in a draft from
an external door or in direct sunlight. Closed radiator
thermostats can also cause problems.
The heat pump operates without the sensor, but if one
wishes to read off the accommodation's indoor temper-
ature in F730's display, the sensor must be installed.
Connect the room sensor to X6:3 and X6:4 on the input
board (AA3).
If the sensor is to be used to change the room temper-
ature in °C and/or to fine-tune the room temperature,
the sensor must be activated in menu 1.9.4.
If the room sensor is used in a room with underfloor
heating, it should only have an indicatory function, not
control of the room temperature.
Caution
Changes of temperature in accommodation
take time. For example, short time periods in
combination with underfloor heating will not
give a noticeable difference in room temperat-
ure.
29Chapter 5 | Electrical connectionsNIBE F730
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