OJ Electronics MWD5-1999-UAC3, Instructions Manual

© 2022 OJ Electronics A/S

9

© 2022 OJ Electronics A/S

Mounting of thermostat with built-in sensor

The room sensor is used for comfort temperature regulation in 
rooms. The thermostat should be mounted on the wall approx. 
1.5 m above the floor in such a way as to allow free air circulation 
around it. Draughts and direct sunlight or other heat sources must 
be avoided. 

Fig. 4 - Opening the thermostat

1.   Slide the power button down to Off “0”.
2.   Release the front cover ONLY by inserting a small screwdriver 

into the slot at the centre of the bottom side of the front cover to 
press and hold the catch securing the front cover.

3.  Then carefully pull the front cover away, initially from the 

lower part of the thermostat, then from the upper part of the 
thermostat.

Fig. 5 - Connections

Connect the wires in accordance with the diagram. The wires must 
be connected as follows:  
Term. 1: 

Neutral (N)

Term. 2: 

Live (L) 

Term. 3-4: 

Output, max. 16 A 

Term. X: 

Do not connect

Term. 5-6: 

External floor sensor

Fig. 6 + 7 - Mounting the thermostat

1. Mount the thermostat in the wall socket. 
2.  Fit the frame and carefully press the cover onto the thermostat 

- starting with the upper part of the cover, then the lower part of 
the cover. Ensure that both the power slide button on the cover 
and the power switch pin in the thermostat are down.

3. Click the cover into place by applying light, even pressure. 

Warning! Do not apply pressure to the corners of the display 
cover or to the display itself. 

DO NOT

 open the thermostat by releasing the four fixing clips on 

the back.

MWD5-1999-UAC3 English