OJ Electronics WLM2-1BA, User Manual

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Waterline room sensors 

If the WLTM-x9 or WLTD-x9 Room sensor has been allocated to a WLCT2 controlled area, then when AUTOMATIC mode has been chosen 

with the built-in slide switch, the temperature settings will be as programmed in the WLCT2 Room controller and not in the master, but the 

same local ±4°C adjustment is available.

On the Master WLM2-1FS and WLM2-3FS, if the temperature setting is changed, then the default temperature for all the rooms is changed, 

but each WLTA, WLTM or WLTD Room sensor is locally adjustable with its own adjustment knob. With this knob the temperature setting 

from the Master can be increased or decreased by 4°C for that specific room.

The master is supplied with default temperature settings which are used by all non Room sensors that are connected to the system. In 

Master WLM2-1bA & WLM2-3bA, the DAY temperature setting is fixed at 21°C and the NIGHT temperature is fixed at 15°C.

In Master WLM2-1FS & WLM2-3FS, the DAY, NIGHT and OFF default temperatures are adjustable through the display.

Automatic switching between DAY and NIGHT temperatures is done by either connecting a separate timing device to the master, or using a 

WLCT2 Room controller and allocating other Room sensors as part of its group. It is possible to have two or more Room controllers in the 

system, with each one having its own group of non Room controllers.

setting of room temperature

INSTRUCTIONS

setting of room sensor operating Mode

Room sensors type WLTM-x9 and WLTD-x9 have a slide switch (see fig. 4) for selecting the mode of 

operation of the controller. Four different modes can be selected: Auto, Day, Night and OFF.

Auto: The controller will follow the temperature settings of the master, or if the Room sensors 

belongs to a zone group using a WLCT2 Room controller, it will follow the automatic sequence of 

temperatures and timings set in the WLCT2.

Day: It will control the room temperature according to the (DAY) setting defined in the master 

(typically 21°C).

Night: It will control the room temperature according to the (NIGHT) setting defined in the master 

(typically 17°C).

OFF: It will control the room temperature according to the (OFF) setting defined in the master 

(typically 5°C). This setting is intended to be a ”frost protection” mode and is used if the room is 

to be left unoccupied for long periods.

WLTM-x9 & WLTD-x9 are recommended for guest rooms and other infrequently used rooms, as they  

allow simple override of the automatic timing sequence.

Fig. 3