OJ Electronics MWD5-1999-UAC3, Instructions Manual

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© 2022 OJ Electronics A/S

MWD5-1999-UAC3

© 2022 OJ Electronics A/S

INTRODUCTION

The thermostat is an electronic PWM/PI thermostat for temperature 
control by means of an NTC sensor located either externally or 
internally within the thermostat.
The thermostat is for flush mounting in a wall socket. A baseplate 
for wall mounting is also available.

This thermostat can be used as a controller for electric room 
heating pursuant to EN 50559.

Fig. 1 - Content

•  Thermostat
•  Sensor

IMPORTANT SAFETY INSTRUCTIONS
Fig. 2 - Warnings

To avoid electric shock, disconnect the heating system 
power supply at the main panel before carrying out any 
work on this thermostat and associated components.

Installation must be carried out by qualified personnel in 
accordance with appropriate statutory regulations (where required 
by law).

Installation must comply with national and/or local electrical codes.

Cautions

This instruction must be observed, otherwise the liability 
of the manufacturer shall be voided.

Any changes or modifications made to this thermostat 

shall void the liability of the manufacturer.
Maximum product lifetime is achieved if the product is not turned 
off but set at the lowest possible set point / frost protection when 
heat is not required.

Instruction

English