4
3. INSTALLATION
Before installing the thermostat check if the necessary preparations have been made. You can
find the relevant details in the instructions manual of the heating system to be used. The BVF
Heato9 thermostat can be mounted in a recessed mounting box or on a surface mount frame. The
dimensions of the recessed mounting box can be seen in the figure below:
The mounting box should always be of the screw type and be prepared for use with horizontally
positioned mounting bolts. The thermostat should be installed in the following manner:
1.
Make the relevant electrical circuit dead. Leave the performance of the electrical job to an
expert.
2.
Remove the front panel of the thermostat: when looking at the thermostat from the front,
there is a rectangular-shaped recess at the bottom of the device on its two sides; insert and
carefully press a thin screwdriver or phase indicator into this recess and you can now lift off
the front panel. Take care not to break the plastic fixing lugs. In cold weather (below +5°C)
plastic becomes brittle and the risk of breaking increases. If possible, install the the heating
system at a temperature above +5°C.
3.
The front and rear panels of the thermostat are connected by a pin-type connector. Upon
removing the front panel this connector slides out of the rear panel. Put the removed front
panel aside in a safe place, protecting it from damage.
4. Carry out the electrical connection of the rear panel. (Item 4)
5.
Mount the rear panel using the screws provided with the recessed mounting box or in the box
of the thermostat. Take care to mount the rear panel in a way that the display on the mounted
front panel can be properly read („upside up”). Make sure that the connected wires would not
come out of the thermostat when mounting the rear panel.
6.
Replace the front panel; make sure that the pins of the pin-type connector remain intact,
undeformed and unbent. First the upper fixing points on the front panel should be fitted.
Adjust the pin-type connector to the connection point on the rear panel.
7.
Snap the front panel onto the rear panel: first fit the upper part of the display to the upper two
lugs, then snap the lower two fixing lugs into place.
8.
After turning the thermostat circuit on the circuit is live again and the device can be switched
on.
External fixing screws must be placed in horizontal position!
55 mm
d 65 mm