NRT405F901 manual
Chapter 6
Installation
13
Chapter 6 Installation
Mounting
Mount the controller in a location that has a temperature representative for the room. A
suitable location is approx. 1.6 m above floor level in a place with unobstructed air
circulation.
Depress the locking tab in the top edge of the cover by using a screwdriver. Gently twist the
screwdriver until the bottom plate and the electronic unit separate somewhat (see figure 3,
below). Then use the gap visible at the edge of the bottom plate to open the top half
completely (see figure 4). Do the same thing for the bottom half of the device.
Figure 3
Figure 4
Lift the electronics unit up from the bottom plate. The bottom plate with terminals has a
number of fixing hole patterns. Select suitable holes and screw the bottom plate onto the wall
or connection box, so that the arrows on the bottom plate point upwards.
NOTE:
Do not fasten the screws too tightly!
Communication, wiring
The communication cable must be a screened, twisted pair cable. If the length of the loop
exceeds 300 m, a repeater is required. See figure below:
Figure 5. Wiring
