OJ Electronics WLM2 User manual

www.oj.dk

User Manual

WLM2 WLTA WLTD WLTP WL

57640A 11/08 (DJU)

BR-0965-A10

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

QUICKGUIDES

INSTRUCTIONS

CONTENT

Quick guide analogue room sensors .............................................................. 4

Quick guide WLCT2 programmable Room controllers ................................... 4

Quick guide for Master modules ..................................................................... 5

Trouble shooting ............................................................................................. 6

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

QUICK GUIDE ANALOGUE ROOM SENSORS

QUICK GUIDE WLCT2 PROGRAMMABLE ROOM CONTROLLERS

TA TD TM

QUICKGUIDES

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.

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.

These room sensors have an adjustment knob, which enables you to increase or decrease the room

temperature setting by up to 4˚C.

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

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 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.

Setting day temperature

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.

Setting remote night temperature

If a remote timer has been ﬁtted by the installer, it is possible to automatically switch to a night

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”.

WLM2-1BA + WLM2-3BA

WLM2-1FS + WLM2-3FS

- 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.

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),

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.

QUICKGUIDES

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)

Room is too hot.

(After running for at least 48 hours)

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

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

set correctly.

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

or “night” position.

For rooms with ﬂoor sensors, the maximum ﬂoor limit setting could be preventing the room

reaching the desired temperature.

Insufﬁcient heating capacity of the system.

Bad insulation creating large heat loss.

This could be caused by draughts within the wall cavities.

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

room.

If the room is controlled by a WLCT2 room sensor, check that the time and temperatures are set

correctly.

If the room sensor has got an override switch (WLTM or WLTD), the switch may be set in the “day”

position

For rooms with ﬂoor sensors, the minimum ﬂoor limit setting could be increasing the room

temperature above the desired setting.

Solar gain or extraneous heat source.

QUICKGUIDES

INSTRUCTIONS

Master with Display Type WLM2

Introduction

The masters type WLM2-1BA and

-3BA are pre-set and need no

adustment. See Master factory

settings page 11.

WLM2-1BA - 3BA WLM2-1FS -3FS

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.

The masters type WLM2-1FS and

WLM2-3FS are provided with graphic

display to enable simple programming

and operations of the unit to be

achieved using simple and easy to

understand icons and symbols.

The ADD ON type WLM2-1AO

and WLM2-3AO is an extension

module for additional 6 outputs.

The module needs no adjustment

WLM2-1AO and WLM2-3AO

21˚C

18˚C

5˚C

27˚C

17˚C

Day Temperature Temperature set point for all room sensors not part of a room controller group.

Push (✓) accept and (△) (▽) to adjust the set point.

Night Temperature 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

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.

Maximum Floor limit temperature for room sensors with limit sensor (ﬂoor sensor)

Minimum Floor limit temperature for room sensors with limit sensor (ﬂoor sensor)

Max.

Min.

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.

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.

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).

Moving Around in the Menu

Control of Room Temperature

Master with Display Type WLM2

Supply Water Temperature Control

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.

Master with Display Type WLM2

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

-3ºC Winter

Outdoor temperature

45ºC

Winter

Design supply water temperature at outdoor temperature –3°C

Design supply water temperature if used without outdoor compensation module.*)

Return

20ºC Summer

Outdoor temperature

25ºC Summer

Supply water temperature at outdoor temperature 25ºC

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.

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).

Summer

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).

Line 1: Factory settings

Line 2: Example on modiﬁed settings

Master with Display Type WLM2

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