57640A 11/08 (DJU)

User Manual

WLM2 WLTA WLTD WLTP WLCT2

www.oj.dk
CONGRATULATIONS

Congratulations with you new control system for

underfloor heating and cooling.

The control system has been developed to provide a

temperature control system for room heating and cooling,
integrating the switching of primary heating and cooling
sources with the control of water temperature and mixing
devices.
This ensures the best possible comfort conditions and also
reduces energy consumption.

Highlights of the system (depending on equipment):

:: Heating and cooling control for true comfort

:: Humidity sensor to prevent condensation on floors
:: Energy saving comfort with adaptive function
:: Area control for easy operation
:: Flexible installation for wired and wireless connection
:: Network communication for large applications
:: Easy installation with plug and lead connections
:: Optional weather compensation

BR-0965-A10

2
CONTENT
QUICKGUIDES
Quick guide analogue room sensors .............................................................. 4
Quick guide WLCT2 programmable Room controllers ................................... 4
Quick guide for Master modules ..................................................................... 5
Trouble shooting ............................................................................................. 6

INSTRUCTIONS
Master with Display Type WLM2 .................................................................. 7
Introduction ..................................................................................................... 7
Supply Water Temperature Control ................................................................. 9
Using outdoor compensation module for weather compensation .................. 9
Service Menu................................................................................................. 11

Using cooling functions .............................................................................. 13

Master Factory Settings ................................................................................ 13

Error Indication ............................................................................................ 15

Type WLCT2 (and WLCT2/R/HW/2)............................................................ 17

Introduction ................................................................................................... 17
Getting Started .............................................................................................. 17
Daily Use of the room sensor ........................................................................ 20
Programming 4-Event Clock Time and Temperature .................................... 21
Advanced Settings and Read-out ................................................................. 22
Reset to fatctory Settings - room controllers ................................................ 26
Domestic hot water control ........................................................................... 27
Radiator control ............................................................................................. 27
2 step heating ................................................................................................ 27

Waterline Room sensors ............................................................................ 28

Setting of Room Temperature ....................................................................... 28
Setting of Room sensor Operating Mode ..................................................... 28

Zone Chart ................................................................................................... 32

3
QUICKGUIDES
QUICK GUIDE ANALOGUE ROOM SENSORS
1 These room sensors have an adjustment knob, which enables you to increase or decrease the room
temperature setting by up to 4˚C.

2 room sensors type WLTM-19 and WLTD-19 have a slide switch for selecting the mode of operation of the
room sensor. Four different modes can be selected: Auto, Day, Night and OFF
TA TD TM
Auto: Roomsensor will follow the temperature settings of the master, or if the room sensor
belongs to an area controlled by 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 20˚C).
Night: It will control the room temperature according to the (NIGHT) setting defined in the
master (typically 15˚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-19 & WLTD-19 are recommended for guest rooms and other infrequently used rooms,
asthey allow simple override of the automatic timing sequence.

QUICK GUIDE WLCT2 PROGRAMMABLE ROOM CONTROLLERS

1 Setting time and day
If not already done by the installer, adjust the time and day on any WLCT2 room controller as follows:
(picture with button positions)
a. Using a pen or pencil press the small pinhole button with the clock symbol.
b. Using the up and down buttons adjust the hours and press OK.
c. Using the up and down buttons adjust the minutes and press OK.
d. Using the up and down buttons adjust the day number (1 = Monday) and press OK.

2 Setting areas
If not already done by the installer, the WLCT2 room controller can be used to set the operating times and
temperatures of room sensors (channels) in addition to controlling its own room.
To achieve this, do the following on the WLCT2 room controller:
a. Enter the “InFo” menu by pressing the up and down button simultaneously for 4 seconds.
b. Find the “ArEA” menu with the down button and press OK.
c. The display shows “CH 1” (channel 1).
- Press OK button.
4
 - Select “On” if this channel (room sensor) should be controlled by the WLCT2 room controller, or “OFF” if not.
- Now press OK button to get to the next channel (CH 2) and repeat this step until all required channels have been selected “On”.
d. After all channels are set up, find the “ESC” menu entry and press OK.

NB: If different times and temperatures are required for other channels (room sensors) within the system, more than one WLCT2 room controller can be
used. Care must be taken to ensure that the action of selecting a channel “On” is not made on more than one WLCT2 room controller.

3 Setting program times and temperatures

Adjusting the program times and temperatures.
On Monday to Friday (day 1-5), the CT room controller operates a 4-event program (wake, leave, return, sleep), and on Saturday and Sunday (day 6-7),
QUICKGUIDES

2-events (wake and sleep). Each event can have a separate temperature & time.
Each event is indicated on the display by the symbols ( )
To adjust these settings:
a. Press OK button for 5 seconds.
b. The display shows the wake up time for Monday to Friday.
c. To adjust the hours use the up and down buttons and press OK.
d. Now adjust the minutes using the up and down button and press OK.
e. Now adjust the desired wake up temperature using the up and down button and press OK.
f. Now repeat b to e for the leaving time and temperature, the return time and temperature and the sleep time and temperature.
g. Now repeat b to e for Saturday and Sunday wake and sleep times and temperatures.

NB: To set up different types of event programs, change to Fahrenheit scale, change to AM/PM clock or change of other advanced settings - please
refer to the section Instructions WLCT2.

QUICK GUIDE FOR MASTER MODULES

BA masters are pre set and need no adjustment - see “Factory settings” page 13
On the FS Master you can adjust the operating temperatures for any rooms which are not controlled
by a CT room sensor.

1 Setting day temperature

WLM2-1BA + WLM2-3BA
To adjust the day temperature (indicated by a sun in the display), press OK button.
Now use the up and down buttons to select the temperature required, and press OK button.

2 Setting remote night temperature

If a remote timer has been fitted by the installer, it is possible to automatically switch to a night
WLM2-1FS + WLM2-3FS temperature.
To adjust the night temperature, press the up button until the moon is displayed and press OK button.
Now use the up and down buttons to select the temperature required, and press OK button.

Other advanced settings can be changed-See section “Master with display type WLM2”.
5
 TROUBLE SHOOTING
- If any LED is flashing on master - Please refer to section “Error indication”.

Room is too cold.

(After running for at least 48 hours) 1 The room sensor is placed in a position that does not represent the general temperature in the
room. E.g. mounted on external wall or near an extraneous heat source
QUICKGUIDES

2 If the room is controlled by a WLCT2 room controller, check that the time and temperatures are
set correctly.

3 If the room sensor has got an override switch (WLTM or WLTD), the switch may be set in the “off”
or “night” position.

4 For rooms with floor sensors, the maximum floor limit setting could be preventing the room
reaching the desired temperature.

5 Insufficient heating capacity of the system.

6 Bad insulation creating large heat loss.

Room is too hot.

(After running for at least 48 hours) 1 This could be caused by draughts within the wall cavities.

2 The room sensor is placed in a position that does not represent the general temperature in the
room.

3 If the room is controlled by a WLCT2 room sensor, check that the time and temperatures are set
correctly.
4 If the room sensor has got an override switch (WLTM or WLTD), the switch may be set in the “day”
position

5 For rooms with floor sensors, the minimum floor limit setting could be increasing the room
temperature above the desired setting.

6 Solar gain or extraneous heat source.

6
INSTRUCTIONS

Master with Display Type WLM2

Introduction

WLM2-1BA - 3BA WLM2-1FS -3FS WLM2-1AO and WLM2-3AO

The masters type WLM2-1BA and The masters type WLM2-1FS and The ADD ON type WLM2-1AO
-3BA are pre-set and need no WLM2-3FS are provided with graphic and WLM2-3AO is an extension
adustment. See Master factory display to enable simple programming module for additional 6 outputs.
settings page 11. and operations of the unit to be The module needs no adjustment
achieved using simple and easy to
understand icons and symbols.

Using Clock thermostat (WLCT2-x9):

If a room controller is used as an area control for one room or a group of rooms, then all the room
sensors within this zone will operate according to the temperatures and times defined in the room
controller. However the local room sensors within the group are still capable of being adjusted by
± 4˚C so that some rooms can be set higher or lower than others. The decision as to which room
sensors will form part of the room controllers group is made by programming the room controller
(see instructions for WLCT2 unit). Any room sensors that are not part of the room controllers
group will operate to the temperature as defined in the master control, but again with the option of
local ±4˚C adjustment.

Using External Switch for Night Setback

The day temperature set point is defaulted to typically 21˚C and the night temperature to
typically 18˚C. These default settings can be changed on the FS master.
The current operating set point of the master can be changed from the day temperature into
night temperature, by connecting a separate timing device to the master. When the external
switch or timer is used to switch to night setback, this will override any time settings in a
WLCT2 room controller, including any room sensors that are part of a group allocated to that
room controller.
7
 Moving Around in the Menu
By using the (△) (UP), and the (▽) (DOWN) you move through the main menu into sub menus. The
description of these submenus can be seen below. If a value needs to be changed, then press (✓)
(CONFIRM) button once, and alter the value with the (△) (UP) and (▽ ) (DOWN ) buttons. Then press
(✓) (CONFIRM) to accept the new value.
Master with Display Type WLM2
If you wish to reset the master to factory settings, then push the (✓) (CONFIRM)
button for 15 sec. until the 8 outputs starts blinking. The master has now been
reset to factory settings.

Control of Room Temperature

Within the memory of the master, there is a room temperature Setpoint which will
apply for all rooms connected to the system. This setting is typically 21˚C when the unit
leaves the factory, but it can be increased or decreased as required. Any change will apply to all
rooms on the system unless a room controller is employed
(see next para).

Day Temperature 21˚C

Temperature set point for all room sensors not part of a room controller group.
Push (✓) accept and (△) (▽) to adjust the set point.

Night Temperature 18˚C

When activated via an external timer, this action is valid for all room sensors connected to the master.
Night setback can also be activated on individual room sensors (WLTM & WLTD) by using the selector
switch and setting to the “night” position. A room controller (WLCT2) will automatically switch to night
setback at the times programmed into it, as will all the other
room sensors which are included in its group.

Off Temperature 5˚C

All room sensors with an override switch (WLTM & WLTD) can be set to an OFF position. This is
known as a frost protection position, and if the temperature in the room shoud fall as low as 5˚C, the
heating will be enabled to prevent frost damage. The 5˚C level can be changed in the master module.

Max. 27˚C
Maximum Floor limit temperature for room sensors with limit sensor (floor sensor)

Min. 17˚C
Minimum Floor limit temperature for room sensors with limit sensor (floor sensor)

8
 Supply Water Temperature Control

Master with Display Type WLM2 Using supply water sensor for limitation of supply water:
A limit sensor should be used with the WLM2 1FS & WLM2 3FS, but can be used without the weather
compensation module (WLOC-19). In this case the master will control the supply water temperature
flowing into the system via the 3 or 4 port mixing valve and actuator. The factory default setting is
45˚C, but can be changed via the master display.*

Using outdoor compensation module for weather compensation

When the outdoor compensation module (WLOC) is connected to the system, the master calculates the correct supply water temperature,
taking into account the heat losses that will vary depending on the outdoor temperature, and the room temperature requirements of
the system. For example, on a day when the outdoor temperature is 12˚C, it is possible to run the heating system with a supply water
temperature of only 35˚C. this ensures economical running of the boilers, and comfortable room conditions throughout the year. The max
allowed supply water temperatur prevents excessive water temperatures if the outdoor temperature becomes extremely cold, e.g. - 30˚C.

55ºC Max allowed supply water temperature. (This is a safety maximum)

Winter
-3ºC
Outdoor temperature

Winter
45ºC Design supply water temperature at outdoor temperature –3°C
Design supply water temperature if used without outdoor compensation module.*)

Return

Summer
20ºC
Outdoor temperature

Summer
25ºC
Supply water temperature at outdoor temperature 25ºC

9
 Max supply temperature
The max allowed supply water temperature is set according to the design requirements of the
installation (line A on the curve). This is the safely maximum.
Master with Display Type WLM2
Weather compensation

Winter
A design outdoor temperature and the corresponding design supply
water temperature are set (point B). To increase the heat output, adjust
the supply water temperature higher, until you feel comfortable (we
recommend only a 2 degree adjustment of this temperature at a time, and
time allowed for the system to respond).

Line 1: Factory settings Summer

Line 2: Example on modified settings An outdoor temperature and the corresponding supply water temperature
are set (point C). Set the outdoor temperature at the level where heating will no longer be
required (this is known as the summer shut down temperature) Default setting is 20˚C.

Then set the supply water temperature that you require when the outside temperature is at
20˚C. The default is 25˚C.

To start the summer shut down at a lower temperature level, reduce the outdoor
temperature setting, and/or reduce the supply water temperature at this setting.

The master calculates the supply water temperature on the line C to 1 if an outdoor design
temperature of -3˚C is selected, or on the line C to 2 if the outdoor is selected at -10˚C. The
intersection point on the line of the actual outdoor temperature indicates the calculated
supply water temperature.

Compensation for outdoor temperature can only be done if an outdoor compensation

module (WLOC) is installed. Without outdoor compensation module the Master will adjust
the supply temperature after the design supply water temperature winter setpoint (default
45°C).

10
 Service Menu

Service menu
Master with Display Type WLM2
55ºC Push accept to enter
The controller will automatically return to main menu after 30 minutes.

2.0 Software version

OK no failures
E0 to E11 if a failure is present. See page 13 for explanation.
LS= Low signal on wireless room sensors/controllers
LB= Low battery on wireless room sensors/controllers Submenu 2

Push accept to enter and see which unit has the failure
Submenu 2a

Network Status (normally hidden)

TOTAL X If a network master detects a network this menu entry is shown.
Here it is possible to check the status of the network.
“TOTAL X”: Shows how many masters the network master detects.
(x is the amount of connected masters)
“NET OK” No errors detected in the network
“ERROR ON IDxx” Shows if any of the attached masters has local errors.
(IDxx tells which master it concerns. The ID number is
what the encoder on the master is set to)
“NET ERROR” Tells that one or more masters on the network has
stopped communicating. Please use the menu entry
below to check which masters it concerns

Push accept to enter and see which master it is that has the error and what error it is.
Using the “up” and “down” button, select which masters status should be shown on the right side of the display.
>ID11 - ? E:CHANNEL
ID12 - ?
ID21 - ?

Possible Errors:
“LOADING STATUS...” : Receiving information from the network.
“STATUS OK”: No errors detected
“NET-COMM ERROR” : Communication is missing to that master. Please check the connection or remove
the master from memory with a hard reset.
“E1-E11”: The same errors as shown in section “Error Indication” under “Flashing Power LED”
“E:CHANNEL”: This is a channel error which has to be checked locally on that master.

11
 Read-out
-2.4°C
Outdoor temperature
Master with Display Type WLM2
Read-out

⇄ 49.2ºC
39.2ºC
Actual supply water temperature
Actual application sensor temperature

Read-out
44.4ºC Calculated setpoint by the controller for the supply water temperature
Push accept for 3 sec. to change PI-action & 0-10V out

Read-out
Control signal for the mixing valve.
3.5V
At 10 V the mixing valve is fully open (unless the output setting has been changed to 10-0, in which case at
10 V, the valve will be fully closed)
Read-out
--- Room temperature in the different rooms. Push accept (✓), and the up and down keys to select another
24.0°C room. The actual room temperature is shown in the centre of the display. If a maximum limitation sensor
22.9°C is connected the measured temperature is shown above the room temperature, and if a minimum limitation
sensor is connected, the temperature is shown below.

Return

12
INSTRUCTIONS

Using cooling functions

If the installation is capable of doing cooling, a WLAC-1 switching module is installed.

To enable cooling, switch the slider on the right hand side to the cooling position.
The system now switches into cooling with a set point than is 3˚C above the master day set point.
(In case the WLAC-1 module is connected to a BMS controlled signal, the BMS system will make the decision when to
switch to cooling – please leave the slider on the WLAC-1 in position heat).

• By using a humidity sensor the system limits the formation of condensation on floor surfaces due to high humidity.
• If a dehumidifier is being used it will activate if high humidity limits the cooling function.
• When cooling is enabled the cooling set point will be pre-determined by the master
and will override any settings in any clock thermostat to ensure optimum energy efficiency.

Master Factory Settings

Master Settings Factory setting Own settings

House temperature 21˚C

BA/FS
Night temperature 18˚C

Off temperature 5˚C

Floor Limit temp high 27˚C

Floor Limit temp low 17˚C

Max water temperature 55˚C

FS
Weather compensation Outdoor temperature -3˚C

Cold (winter) Water temperature 45˚C

Weather compensation Outdoor temperature 20˚C

Warm (summer) Water temperature 25˚C

13
 Additional information

Master Settings Factory settings

BA/FS Cooling mode Day cooling temperature Day heat temperature + 3°C

Night cooling temperature Day cooling temperature + 3°C

DEW point safety zone DEW point + 3°C

Room temperature control PI - control P = 4°C

I = 90-180 sec
Using cooling functions

K-factor = 0.1

Floor Limit temperature control P - control P = 4°C

Adaptive PWM control Max allowed Room temperature fluctuation +/- 0.5°C

Self adjusting (adaptive) PWM time interval limits 15 – 45 minutes

Max number of connected Wired and wireless 24

sensors

Sensor timeouts Wired 300 sec. (5 min)

Wireless 10000 sec. (2h 45 min)

FS Minimum cooling supply water temperature 16°C

Supply water temperature PI - control P = 20°C

control I = 300 sec.
K-factor = 0.05

14
Error Indication
During normal operation the power LED will be ON when the master control is energised. The red output Channel LED’s
(1 to 8 on the master, and 9 to 14 on the add-on module) will indicate if the channel output relay is ON/OFF.

An error / fault message is shown by flashing the power LED or one of the red output Channel LED’s. From the number of flashes
on any one LED, the problem can be diagnosed, and identified from the following:

The error number will be indicated by the number of flashes, with a pause of less than a 1/2 second between the flashes. The indication will be followed by a
pause of 2 seconds, following which the sequence will be repeated. The failure code can also be seen in the service menu on WLM2-FS MASTERS (submenu 2).

Flashing Power LED (Red and green)

Communication to the network has errors. On the network master it tells that one or more masters are not communicating. On a network slave it tells that
communication to the network master is missing.

Flashing Power LED (Red)

E1, 1 flash One or more room sensors, room controllers, WLH, WLAC that are set to channel 0 or channel 15 are no longer sending data to the master
control. The fault is corrected by replacing the room sensor. The master will need to be HARD RESET (see next page “HARD RESET”)
(NOTE: If the room sensor is of the WIRELESS type, the error/fault message could be an indication that the power has failed,
and that the internal battery of the room sensor needs to be replaced)
E2, 2 flashes One or more room sensors have been set to a channel number which does not exist in the system. For example, the message will occur
if the units are set to channels 9-14 and the required add on (AO) module are not found in the system. The error is corrected by setting
the channel number of the room sensor to a channel that does exist within the installed master/add on module system.
E3, 3 flashes Application sensor defect. The fault is corrected by changing the temperature sensor. If the sensor has been removed deliberately to
change the operation of the system, follow the HARD RESET instruction below.
E4, 4 flashes The outdoor compensation module (WLOC) is defective. The fault is corrected by changing the outdoor compensation module.
If the module has been removed deliberately to change the operation of the system, follow the HARD RESET instruction below.
E5, 5 flashes The external Supply limit sensor (type ETF-1899A) is defective. The fault is corrected by changing the temperature sensor. If the
sensor has been removed deliberately to change the operation of the system, follow the HARD RESET instruction below.
E6, 6 flashes Internal overheating. The master has its own internal safety temperature protection system. The problem is corrected by improving the
ventilation around the master module.
E7, 7 flashes Defective internal overheat sensor. The Master will control as normal, however the protection against internal over heating is no
longer active. The fault can only be corrected by replacing the master module.
E8, 8 flashes The communication to the AO module has been lost. The fault is corrected by re-establishing the connection to the AO module or by
changing the AO module if it is defective - or if it has been deliberately removed, with a HARD RESET.
E9, 9 flashes Indicates total number of input units exceeded. Please refer to factory or your local service engineer.
E10, 10 flashes No connection to wireless receiver, type WLRC2-19.
E11, 11 flashes Step 2 on 2-step controller (WLCT2-X9/2) is used by another room sensor/controller.
Only one error/fault condition can be shown at a time. If more than one error occurs, they will be prioritised in the shown sequence (E1, 2, 3…).
15
 Flashing output LED (red):

The appropriate output channel LED can flash, indicating that the room sensor or room contoller on that channel has a fault/error. The failure code can
also be seen in the service menu (submenu 2a).

E1, 1 flash The master has lost communication to the room sensor. The fault is corrected by re-establishing the connection to the Room
Sensor and the fault condition will be automatically reset once correct communication is resumed. If the room sensor is
defective and has to be changed, or if it has been deliberately removed, it is necessary to make a HARD RESET. (NOTE: If the
room sensor is of the WIRELESS type, the error/fault message could be an indication that the power has failed, and that the
internal battery of the room sensor needs to be replaced)
E2, 2 flashes The internal sensor in the room sensor/controller is defective. The fault can only be corrected by replacing the room sensor/
Controller. Remember to make a HARD RESET after installing the new room sensor/controller.
E3, 3 flashes The limit sensor on the room sensor/controller is defective. Replace the faulty sensor. Reset is NOT required.
Error Indication

E4, 4 flashes Defective WLCT2 room controller. If a room controller operating a group of room sensors becomes defective, the remaining
room sensors will continue control within the maximum and minimum limits programmed into the Room controller.
E5, 5 flashes Two or more room controllers are trying to control this output. Check “AREA” setting on the room controllers.
E6, 6 flashes Channel output number one is configured as a dehumidifier output, error caused by a room sensor/controller also being set to
control this output.

RESET
There are 2 different reset actions that can be used.

HARD RESET
If the ‘✓’ button is pressed for 5 seconds, a HARD RESET will be initiated. (Indicated by all the red output LED’s(1-8) lighting in sequence). This reset
will remove from the system any room sensor unit with a defective input sensor, or a defective AO module. The fault message will be reset but the
defective items will no longer participate in the system. To add or replace a new unit, please refer to “Replacing equipment - Replacing a faulty sensor/
controller”. To erase the identity of the defective component from the master memory a HARD RESET must be performed Hard resets do not alter the
temperature settings already programmed into the master control.

FACTORY RESET
If the (√ ) button is pressed for more than 15 seconds, a total factory reset will be initiated. This is indicated through flashes of channel LEDs 1,3, 5 and
7 alternating with channel LEDs 2, 4, 6 and 8 (while the “√” button is pressed).
A factory reset will put all programmed temperature settings back to the factory defaults. It will also remove all room sensors/Controllers from the
master memory, and reset the system to accept only those room sensors/Controllers that are functioning correctly.
To reconnect room sensors/controllers, please refer to “Replacing equipment - Replacing a faulty sensor/controller”.

16
INSTRUCTIONS

Type WLCT2 (and WLCT2/R/HW/2)

Introduction
The room controller type WLCT2-x9 is a 4 event programmable controller used to control underfloor heating areas
or special features on the WLM2 installation. The standard WLCT2-x9 can be used to programme up to 4 time and
temperature events over a 24 hour period, based upon a 7 day setting. Once a WLCT2-x9 has been fitted the times and
temperatures for the area(s) it controls will no longer come from the defaults set in the main WLM2 master.

In addition to the immediate area of control set, within the WLCT2-x9, and selected via the ‘AREA’ setting contained within its
internal menu, the WLCT2-x9 can control the time and temperature characteristics of other sensor (up to 14) fitted to the WLM2
master, this has been designed to maximise comfort and efficiency and promote energy saving and associated cost savings.

Where the WLCT2-x9 is controlling other areas the +/- 4°C setting of those areas will now operate from the WLCT2-x9
settings, e.g. A WLCT2-x9 is set to 22°C and has been given control over ‘Area 1’, the WLTA-x9 fitted in ‘Area 1’ now has
a control range of 18°C(-4°C) to 24°C (+4°C).
In addition to the standard WLCT2-x9 room controller, you may have fitted to your system one of the following;

WLCT2-x9/2: This control allows the operation of a secondary heat source, for a specific area, as a boost function
operating in conjunction with the underfloor heating.
WLCT2-x9/R: This control is used for the control of radiators in a domestic central heating circuit.
WLCT2-x9/HW: This control is used for the production of hot water control within a system.
Upon installation your installer should have set up the WLCT2-x9 control to suit your needs, should you
need to change any of the setting please follow the instruction detailed in following pages.
The WLCT2-x9: can be reset by pressing the button marked ‘R’ (see fig 1), this will allow you to return to the factory
settings at any time. The default factory settings are detailed after the WLCT2-x9 programming section of
this manual.

Getting Started
Fig. 1 Buttons
A: B: C:

Display Adjustment OK -
down accept

D: E: F:

Adjustment Reset to Pin button

up factory adjust of
setting clock

17
 Display

G: H: I:
Type WLCT2 (and WLCT2/R/HW/2)
G K Automatic Manual Time and
mode mode temperature
H

J: K:
J
Day number 4-event symbol
Wake Out
I Night Home

Setting the room controller into operation

First time power is connected the clock and day will be flashing and must be set. If you need to adjust the
time of the thermostat at a later date, insert a pin into the hole marked (see fig. 1) for setting of time and
day. Adjustment should be made for change in summer and winter time.

Press the UP (△) or DOWN (▽) buttons to select

the correct hours and press OK button ( ).

Press the UP (△) or DOWN (▽) buttons to select

the correct minutes and press OK button ( ).

Then press the UP (△) or DOWN (▽) button to 1-7

select the correct day and press OK ( ) button.

AREA SETUP - see next page.

18
 ArEA - (Group of rooms)
The rooms that are to be set as part of the WLCT2 area will follow the temperature settings of the room controller example, an area could
be the living room, kitchen, and children’s rooms, having a high room temperature requirement during afternoon and early evening, and
a lower temperature during the early part of the day and at night. Each room sensor will have a channel number, designated CH1, CH2
Type WLCT2 (and WLCT2/R/HW/2)
etc. The appropriate channel number of any room sensor is determined by the numbered output on the master control which is actually
switching the valve/actuator for that area.

For example, a system may have the kitchen room sensor operating master output # 4, and the childrens room sensor operating master
output #5. If the WLCT2 room controller is then situated in the living room, and operating output #1, then the WLCT2 need be programmed
to control outputs 1, 4, & 5. (Each room sensor will have been set to operate its appropriate output ch see separate instructions).
To do this, enter the ArEA sub menu., and press OK ( ) button. CH 1 will be displayed; use the OK ( ) button and then the UP (△) button
to change the setting to ON. Press OK ( ) and CH 2 is displayed. Use the UP (△) button until CH4 is displayed, press OK ( ), and change
to ON. Repeat this for CH 5. All three room sensors will now operate under the control of the WLCT2 room controller.

In total up to 14 Channels can be programmed in this way, and it is possible to have more than a single room controller, each own sub
room sensors operating to its schedule and temperatures.

Set the Channels / Rooms (Ch) to ON if they should follow the settings
of this clock thermostat.

In total 14 channels / rooms can be controlled.

19
 Daily Use of the room sensor

Type WLCT2 (and WLCT2/R/HW/2) 4-Event Clock Mode

Wake up The day has been split into 4 events describing a typical day. When the room sensor is in
this 4-event mode it will change the temperature to the required level automatically at the
programmed times. As standard the room controller has days 1 to 5 (Monday to Friday)
Sleep Leave with 4 events and days 6 and 7 (Saturday and Sunday) with 2 events. Each events allows
home you to increase or decrease the set temperature. For programming see page 17.
Please, see page 18 - PRO - 4-event sequence to alter the daily event sequence.

Return

4-event clock mode/ In automatic mode, the clock function symbol ( ) and one of the 4-event symbols ( ) will be
automatic mode: indicated. Programming page 17.

Comfort mode:
Temporary override
To temporarily override any temperature in the 4-event schedule program, press the UP (△) button once, to show
5 secs.
the temperature in the display, and press UP (△) or DOWN (▽) again to increase or decrease the temperature. The
display will flash for 5 seconds, and will then revert to the time. The override will operate until the next programmed
event when the thermostat will resume the automatic programme.

Cancel comfort mode (temporary override)

To cancel the temporary override, press the OK ( ) button twice.

Manual mode: Permanent override:

During holidays, the scheduled 4-event program can be overridden. Press the OK ( ) button, and then the UP (△) or
DOWN (▽) button until the override temperature is set. The set temperature will remain in the display and the unit will
now operate to this temperature permanently.

Cancel manual mode

To cancel the permanent override state press the OK ( ) button once, and the unit will resume automatic function.

20
 Programming 4-Event Clock Time and Temperature

Type WLCT2 (and WLCT2/R/HW/2)

For each event, the start time and required temperature needs
Press OK ( ) button for 3 secs. to begin programming
to be set.
Day 1 - 5
For example, in the morning you wish the heating to start at
07:00 and the temperature to rise to 25˚C. Press OK ( ) button
for 3 seconds and the start time is displayed. Change this to : Time and temperature
07:00 with the UP (△) or DOWN (▽) button. Press OK ( ) to
confirm.
The temperature is now displayed. Change this to 25˚C with the
UP (△) or DOWN (▽) button. Press OK ( ) button to confirm. : Time and temperature
This action can now be repeated for the second, third and
fourth event.

These settings will be valid for days 1-5 showing on the display. : Time and temperature
To program the days 6 and 7, repeat the above. Days 6 and 7
are usually Saturday and Sunday, and only have two events
(generally morning ON and evening OFF).
: Time and temperature
The temperature can be set within the range of +5 to +35˚C.
It is also possible to select the heating OFF at that event by
reducing the setting to 5˚C, and then pressing the (▽) once
Day 6 - 7
more.

Note that when programming the “Sleep” time (event 4), : Time and temperature
please ensure that this time is before midnight (00:00).

: Time and temperature

21
 Advanced Settings and Read-out

Press both UP (△) and DOWN (▽) buttons together for 3 seconds. INFO is displayed.
Continue pressing the UP(△) button until you reach one of the desired sub menus, PRO, Hi Li, Scal, and ArEA (For explanations, see
Type WLCT2 (and WLCT2/R/HW/2)
below. Select the sub menu with the OK ( ) button.

INFO - Information
The values of the actual measured room temperature and the floor temperature can be seen.
The floor temperature is only shown if a floor sensor is installed.

Press UP (△) or DOWN (▽) button to show the different readouts.

Software version
No changes can be made here. Use the OK ( ) button to end.
Room temperature
Floor temperature

PRO - 4-event sequence

It is possible to change the factory event sequence of Days 1-5 - 4 event, and days 6 & 7 – 2 event. Days 1 to 5 are usually Monday to
Friday, whilst days 6 & 7 are usually Saturday & Sunday. An EVENT is either an ON or an OFF operation. You can select from the following
sequences which are displayed in the form of a code.

4 events 5 days, 2 events 2 days indicated by Code 4:52

4 events 6 days, 2 events 1 days indicated by Code 4:61

4 events 7 days indicated by Code 4:70

2 events 7 days indicated by Code 2:70

2 events 5 days, 2 event 2 days indicated by Code 2:52

Select the required sequence with the OK ( ) button.

22
 Hi Li - Floor sensor. Max and min allowed temperature of the floor surface
A limit sensor can be connected to the room controller.
Max limitation is used for safety to prevent high floor temperatures. For example wooden floor constructions which should not
be allowed to exceed a maximum of 27˚C. The value can be set from 5˚C up to 55˚C. The value can also be set to OFF (adjust the
Type WLCT2 (and WLCT2/R/HW/2)
temperature to 55˚C and push button up once more).
Low limitation is used where the temperature of the floor is required never to fall below the minimum set temperature. Example in
kitchens or bathrooms with tiles. The value can be set from 5˚C up to 55˚C. The value can also be set to OFF (adjust the temperature to
5˚C and push button down once more). Remember the max limit temperature must be set higher than the min limit temperature.
The limit temperatures defined in the room controller will be valid for all the room sensors with limit sensor (type WLTD-19) which are part
of the area allocated to the WLCT2 unit.

The maximum allowable floor temperature setting is shown. Use

the UP (△) or DOWN (▽) button to increase or reduce, and OK ( )
button to accept.

The display will now show LoLi. Press OK ( ) button to continue.

The minimum allowable floor temperature setting. Use the UP (△)

or DOWN (▽) button to increase or reduce and OK ( ) button to
accept.

SCAL - Time and temperature scale selection

You can select either ˚C or ˚F scale, and 12 or 24 hour clock as

follows:

Press UP (△) or DOWN (▽) button to change settings. Confirm the

required scale with the OK button ( ) button.

ArEA - (Group of rooms)

The rooms that are to be set as part of the WLCT2 area will follow the temperature settings of the room controller example, an area could
be the living room, kitchen, and children’s rooms, having a high room temperature requirement during afternoon and early evening, and
a lower temperature during the early part of the day and at night. Each room sensor will have a channel number, designated CH1, CH2
etc. The appropriate channel number of any room sensor is determined by the numbered output on the master control which is actually
switching the valve/actuator for that area.

For example, a system may have the kitchen room sensor operating master output # 4, and the childrens room sensor operating
master output #5. If the WLCT2 room controller is then situated in the living room, and operating output #1, then the WLCT2 need
be programmed to control outputs 1, 4, & 5. (Each room sensor will have been set to operate its appropriate output ch see separate
instructions).
To do this, enter the ArEA sub menu., and press OK ( ) button. CH 1 will be displayed; use the OK ( ) button and then the UP (△) button
to change the setting to ON. Press OK ( ) and CH 2 is displayed. Use the UP (△) button until CH4 is displayed, press OK ( ), and change
to ON. Repeat this for CH 5. All three room sensors will now operate under the control of the WLCT2 room controller.

In total up to 14 Channels can be programmed in this way, and it is possible to have more than a single room controller, each own sub
room sensors operating to its schedule and temperatures.
23
Type WLCT2 (and WLCT2/R/HW/2)
Set the Channels / Rooms (Ch) to ON if they should follow the settings
of this clock thermostat.

In total 14 channels / rooms can be controlled.

2 st This menu is only visible on 2 step controllers (WLCT2-x9/2)

2 step – Change of values in 2 step function.

ON
Press the DOWN (▽) button to activate or de-activate the 2 step
function.
Press OK ( ) to confirm.
OFF

The display will now show TEMP. Press OK ( ) to continue.

tEn Use the UP (△) or DOWN (▽) button to change the temperature
P setpoint in the 2-step function.
( If the actual room temperature is higher than the setpoint minus this
setting, the second output will not be activated)
3.0°C

The display will now show TEMP. Press OK ( ) to continue.

tInE
Use the UP (△) or DOWN (▽) button to change the time (in minutes)
before step 2 is activated.
(This parameter decides how long the actual temperature is allowed to
00:01 remain below the setpoint minus the TEMP setting before the second
output is activated)
24
 Adaptive function
This function enables the thermostat to calculate when it needs to switch ON so that the required temperature is reached at the set time.
With a start time of 07:00 therefore, the thermostat may switch ON as early as 06:00 so that the desired temperature of 2 5˚C is achieved
Type WLCT2 (and WLCT2/R/HW/2) by 07:00. Without this function set, the thermostat will start to heat at the time you set.

Press the DOWN (▽) button to switch between on and off.

Press OK ( ) button to confirm.

ESC - Escape
Press OK ( ) button to end programming and to return to scheduled
programme.

25
 Reset to fatctory Settings - room controllers
NOTE: If more than one WLCT2 is present on the system, please copy this page.

Press the pin button R for 3 secs. and the thermostat returns to
Type WLCT2 (and WLCT2/R/HW/2)
Group Room
factory settings.
Remember to set time, day and area. Ch 1 Off

Ch 2 Off
4-event time and temperature Own settings
Ch 3 Off
Standard Special Special Special
WLCT2-x9 WLCT2-x9/R WLCT2-x9/2 WLCT2-9/HW Ch 4 Off
Time Temperature Temperature Temperature Temperature Time Temperature
Ch 5 Off
Day 1-5
Ch 6 Off
06:00 21˚C 21˚C 21˚C 50˚C
Ch 7 Off
08:00 19˚C 19˚C 19˚C 30˚C
Ch 8 Off
16:00 22˚C 22˚C 22˚C 50˚C
Ch 9 Off
22:30 17˚C 17˚C 17˚C 30˚C
Ch 10 Off
Day 6-7
Ch 11 Off
08:00 22˚C 22˚C 22˚C 50˚C
Ch 12 Off
23:00 17˚C 17˚C 17˚C 30˚C
Ch 13 Off
Other settings
Ch 14 Off
4-event sequence - 4:52 4:52 4:52 4:52

High floor limit

- 27˚C - 27˚C -
temperature Example
Low floor limit
17˚C 17˚C - 17˚C -
temperature Ch 1 Kitchen On
Special settings
Ch 2 Living room On
2-step time - - - 60 min -
Insert the room name in the box
2-step temperature against each Ch number, and add ON
- - - 2˚C -
difference if it is controlled by a clock thermostat.

26
 Domestic hot water control
It is possible to control the domestic hot water temperature with a special version of the WLCT2, called
WLCT2-X9/HW) to ensure optimum energy saving.
A hot water sensor is connected to the controller and measures the temperature in the storage cylinder.
Type WLCT2 (and WLCT2/R/HW/2)
• To change the temperature of the domestic hot water, just change the set point in
the WLCT2-X9/HW by using the up or down button.
• The 4-event system in the WLCT2-X9/HW can be used to save energy when hot water
is not needed..
WLCT2/HW

Radiator control
It is possible to control a radiator circuit room temperature with a special version of the WLCT2 called
a WLCT2-X9/R) to ensure optimum energy saving.
The controller measures the temperature in the room, and a zone valve is then controlled via the WLM2
master, which in turn activates the boiler on demand.

• To change the temperature of the radiator circuit , just change the set point in the WLCT2-X9/R
by using the up or down button.
• The 4-event system in the WLCT2-X9/R can be used to save energy when heat is not needed.
WLCT2/R

2 step heating
A special version of the WLCT2 called WLCT2-X9/2 is capable of controlling an additional heat source
in a room. In addition to the primary under floor heating output, the room controller is now able to
control a second output as a boost function, which will be activated only if the temperature cannot be
achieved by the primary under floor heating output within a preset time period.

The Room Controller is used as a standard WLCT2.

If required the settings for when the second heating output is needed can be changed in the service
menu in the WLCT2-X9/2.
WLCT2/2
An additional Menu entry “2 st” can be found.
In this menu two parameters can be changed:

Temp: If the actual room temperature is higher than the setpoint minus this setting, the second
output will not be activated.
Time: This parameter decides how long the actual temperature is allowed to remain below the
setpoint minus the TEMP setting before the second output is activated.

27
INSTRUCTIONS

Waterline Room sensors

Setting of Room Temperature
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 sensor Operating Mode

Fig. 3 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.

28
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Zone Chart
Example

Thermostat Thermo heads / Output Zone

W adjustment
CH 1 1 Kitchen 3 loops marked 1, 2 and 3
and MIN limit sensor

NB
The following chart enables you to write down the zone name, the number of loops serving it, and the control
thermostat type. PLEASE LEAVE THIS INSTRUCTION WITH THE CLIENT.

Thermostats Thermo heads / Output Zone Water loops Thermostats

CH 1 1

CH 2 2

CH 3 3

CH 4 4

CH 5 5

CH 6 6

CH 7 7

CH 8 8

CH 9 9

CH A 10

CH B 11

CH C 12

CH D 13

CH E 14

CH F Special function None

5 7 6 4 0 A