Installation Manual
Contents
1. Jumper WLTM Use of external room sensor A remote room sensor can be used instead of the built in sensor by connecting the jumper across the two pin bridge on the printed circuit board under the Room sensor cover From factory the jumper is parked on one pin Location of jumper see fig 4 zi Technical Data Wireless Batteries Wireless 0 Supply Voltage Batteries 2 x Alkaline 1 5 Room sensors use 2 x AAA batteries type Distance to master Alkaline A lifetime of 1 2 years is expected The r 2 Rn Room sensors are equipped with a low battery Button learning mode Ambient temperature range alarm giving a little bip each 5 minutes in case Communication frequency of low battery If a Room sensor is defective or if Communication distance Upto 30 inside the communication to the unit is interrupted an Up to 100 m outside alarm will be triggered on the master and the room will be heated at constantly 2096 as safety The alarm can be overruled in the next 24 hours On the Room controller press the clock symbol for 2 sec On the other Room sensors remove the front cover and press the little learning mode button for 2 seconds Channel selector 45 42qunf Sui SODINO 1227192 d SOINOWIO313C O MMM q tooIgu T6 OcZv 8v 4 Cel T6 005 8 5 1 821700 831 5 091 82. 57641A 11 08 DJU WLM2 WLTA WLTD WLTP WLCT2 OJ ELECTRONICS www oj dk taking comfort further 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 D Network communication for large applications poe A MAN H SS EE Y Easy installation with plug and lead connections Optional weather compensation BR 0965 A10 INSTALLATION MANUAL WLM Underfloor Heating Controller Description Product Programme Technical Data Environment Recycling of obsolete appliances Configuring the Total System Installation Electrical Installation Boiler Demand Pump Output Free relay function X OUTPUT Thermal Actuators Thermoheads External Switch TIMER for night setback Room sensors Bus Connec
3. Hi Li Scal and ArEA For explanations see below Select the sub menu with the OK y 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 A or DOWN v button to show the different readouts Software version Room temperature gt Floor temperature eegt No changes can be made here Use the OK V button to end PRO 4 event sequence It is possible to change the factory event sequence of Days 1 5 4 event and days 6 amp 7 2 event Days 1 to 5 are usually Monday to Friday whilst days 6 amp 7 are usually Saturday amp 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 38 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 tempera
4. 1 O n Jumper Room sensors WLTA WLTD WLTM WLTP by pressing the internal init button Button learning mode until a beep is heard see fig 12 boo ood Room controllers WLCT2 by pressing the pin hole button with the clock symbol until a beep is heard see fig 13 Switch off DIP 3 to de activate learn mode VT 1 I 0 Button learning ad Channel selector Fig 13 Button learning mode 15 16 Fig 11a Fig 11b Mixing Valve Ac uator MIXING VALVE 0 10V MIXING VALVE 24 SENSOR BR965A39a Supply water temperature sensor and mixing valve BR965A19b Supply water temperature limit sensor This feature is available on the full system masters WLM2 1FS amp WLM2 3FS The limit sensor is directly connected to the master at the terminals marked supply sensor Sensor type ETF 1899A must be used The temperature sensor should be placed on the supply water pipe to the underfloor heating system If a limit sensor is installed without a weather compensation module WLOC the master will control the design supply water temperature The factory default setting can be changed via the display If a weather compensation module WLOC is added to the system the master will vary the supply water temperature setting based on the outdoor temperature A standard compensation curve
5. WLM2 1BA amp WLM2 3BA the DAY amp NIGHT temperature settings are fixed see section Factory Default Settings In master WLM2 1FS amp WLM2 3FS the DAY NIGHT and OFF default temperatures are adjustable through the display On the Master WLM2 1FS WLM2 3FS if the temperature setting is changed then the default temperature for all the room sensors 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 be increased or decreased by 4 for that specific room 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 Room sensors as part of its group It is possible to have two or more WLCT2 Room controllers in the system with each one having its own group of Room Sensors If the WLTM 19 29 or WLTD 19 29 Room sensors has been allocated to a WLCT2 controlled area then when AUTO 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 local 4 C adjustment is still available Setting of Room sensor Operating Mode Fig 4 Room sensors type WLTM 19 29 and WLTD 19 29 have a slide switch see fig 4 for selecting the mode of operation of the controller Four different modes can be selected Auto Day Nigh
6. 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 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 see next page 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 see next page 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 see next page 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
7. above is only on heating only installations On heating and cooling installations and only during cooling periods the system will always run at 10096 OFF in connection with a defective room sensor Emergency program for supply limit sensor If the supply limit sensor is deffective the system will run at constantly 20 on for the valve If an outdoor sensor is connected the system will run 4096 at 10 and Below decreasing to 0 at 20 C and above If no automatic on off sequence of valves or pumps occurs over a 72 hour period an exercise of these components will take place The actuators will be activated for 3 minutes The pumps will be started for 10 secs during that period and the mixing valve if fitted will be opened and closed Module Configuring the Total System WLM2 Master AO Module AO Module Cable 29 Each master module is capable of controlling 8 heating zones each of which may use one or more loops of piping with one or more thermal actuators These zones are referred to as channels 1 to 8 If you wish to control more than 8 zones it is necessary to install an add on WLM2 xAO module which provides another 6 outputs The AO module then controls channels 9 to 14 9 E on the hex coder Connection of master and add on module Connect the AO module using the special cable included in the box Mains supply from 230V fused isolator The sensor bus can
8. and set DIP 3 to ON 6 On wireless sensor controller now press the button on the sensor controller On hardwired sensor controller go to step 7 7 Check that the corresponding output LED has changed from blinking to permanently ON 8 Reset the DIP 3 to OFF For any other changes in the system use the quick guide and start the install sequence from the beginning 22 Guidelines Special Features Power up recommendations When all connections are complete we highly recommend that the connections between the sensors and the thermo heads are tested by following the sequence below System check Correct operation of the system can be checked using a special Install Mode COMMON UHF PUMP This enables the installer to individually test and prove each output BR965A30c Testing the system 1 Switch on DIP 3 to activate learn mode power light will blink quickly Each red channel light on the master should now be lit if a sensor controller is present on that channel X RELAY COMMISSION MODE LEARN MODE BOILER TEST INSTALL MODE Switch off DIP 3 to de activate learn mode again power light stops blinking Turn all adjustable temperature settings on the sensor controller to minimum Switch on DIP 1 on the master to activate install mode Install mode will be active for 2 hours Pumps boiler mixing valve and actuators should now be off Turn the temperature setting on the adjustable sensor controller in room 1
9. as channels 1 to 8 If you wish to control more WLM2 Hydronic Master m than 8 zones it is necessary to install an ADD ON AO module each of which can provide another 6 outputs The AO module then controls channels 9 to 14 o 8 lt 8 3 E Green Power supply connected Red Night setback active Red flashing Indicates error X X Output function is active see section Free relay function 2 Secondary UFH pump is running Tt lt 8 0 Boiler enable signal is activated e i 4 Hydronic Master ie 1 8 Zone 1 to 8 indicating heating is on C 91011121314 WLM2 1AO WLM2 3AO Installation Fit the WLM2 master to a suitable wall It will generally be found more convenient if the unit is within 0 8 metre of the manifold as most thermal actuators are supplied with 1m cables Cables can be run on the surface into the terminals using either the cable releases in the cover or by pressing out the cable entries in the lower part of the cover Electrical Installation ESI ojo Fig 3 PLEASE ENSURE THAT ALL WIRING IS CARRIED OUT IN ACCORDANCE WITH LOCAL ELECTRICAL REGULATIONS When wiring is completed fit the cover on the master using the screws provided BR965A13a Mains supply WLM2 requires a 230V AC mains supply connected to the terminals marked L N amp E Main supply 230V AC from 10 Amp fused isolator Boiler Demand Fig 4 The master has a vol
10. 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 V 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 v 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 Special Features 27 Temperature amp Control TEMPERATURE SETTING For the master with display the setpoints can be altered on the display Each Room sensor with manual adjustment is capable of increasing or decreasing the preset DAY amp NIGHT setpoints on the master by 4C for the heating zone which it is controlling The Room controller WLCT2 has its own DAY amp NIGHT temperature settings that can be set separately and if manual Room sensors are attached to its group these will operate to the same settings as the WLCT2 but still with the possibility of local 4 C adjustment OVERRIDE FACILI
11. fs ats ef7 sfo vp 12113 144 15 16 N L N db L N L N L N L N L N THERMAL ACTUATORS Volt free output for boiler control Main supply Secondary 230V AC from Volt free pump w ge ee 10 Amp fused X output 230V No No isolator Max 6A 1 2 aa Thermoheads 2 Mus Dx wivolt free contacts Open contacts for night setback Top PCB 8 lt 5 g o m S STRING lt NUMBER 8 1 9 f COMMON UHF PUMP of gt X RELAY OFF ee COMMISSION MODE 8588 X 8 of LEARN MODE Ses 3 gt E 2 B 3 Pr BOILER TEST INSTALL MODE 7 8 8 SENSORCONTROUER SUPPLY MIXING VALVE 0 10V 2 wire low voltage bus between the sensor controllers Connect to and L Thermostats can be wired as conventional Star or as Bus connected mode Daisy chain See instruction for further explanation BR965A11d SENSOR ENS jejeojelol o ool eololeleeloeleleojolelelo lejeojoleleolololo ADD ON MODULE IWIRELESS RECEIVE MM EE BUS MIXING VALVE 24 VAC ag i Mixing Valve Actuator Outdoor compensation module If fitted To Control X OUTPUT for DIP 5 DIP 6 DIP 7 Boiler pump OFF OFF OFF High limit zone valve ON OFF OFF Cooling device module OFF ON e Cooling device module ON ON alternative Differential thermostat OFF OFF O
12. has been programmed at the factory If needed the curve can be changed see separate USER MANUAL MASTER TYPE WLM2 Mixing valve actuator control Control of a mixing valve actuator is possible using the digital masters WLM2 1FS and WLM2 3FS The actuator must be 24Vac powered max 6VA and positioned via the 0 10V DC signal and should be configured so that it closes the valve if there is no heating demand OVdc signal The control signal can be reversed to 10 0V via the master menu system if required Control action of the mixing valve actuator is P and the parameters be changed if required in the master menu system Please contact the supplier for further instructions Special Functions Creating a network Fig 12 In large buildings with more than 14 zones where multiple manifolds are 19 lea utilized it is possible to use multiple masters to create a single network Cirkulation pump control of each string One master must be defined as the network controlling master by String 2 gt setting both encoders to zero see fig 12a 12b Subsequent masters up to nine should be connected as a string where they will all use a common pump If more than one pump is used a separate string should be created for each pump see fig 12a On the first string all left hand encoders must be set to 1 and the right hand encoders should be set in sequence from 1 to 9 On the s
13. master is delivered with a jumper in the switch timer terminals amp O The current operating set point of the master can be changed from the day temperature into night temperature and vice versa by using an input from an external switch or timer The input must be a volt free switch and will need to open circuit for night temperature and close circuit for day temperature When the external switch or timer is used to switch to night setback this will override any time settings in a WLCT Room controller including any Room sensors that are part of a group allocated to that Room controller 13 Room sensors Bus Connection Fig 9 Only OJ Room sensors type WLxx that are prepared for 2 wire communication can be used Standard installation cable maximum 2 x 0 25 mm can be used The Room sensors can be connected in the conventional star wiring format or in a bus connected mode Daisy chain see fig 10 fig 11 The master has 4 sets of terminals marked Room sensor BUS that can be used for connecting the 2 wire signal from the Room sensors There are 4 identical sets of terminals for convenient installation Any Room sensor can be connected to any pair of terminals The total length of the 2 wire system can be up to 300 m with a maximum length of 100mbetween any 2 Room sensors Remember to connect to to SENSOR CONTROLLER BR965A18a SENSORS CONTROLLERS CONNECTED IN STAR SENSORS CONTROLLERS CONNECTED IN BUS MO
14. needs to 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 by 07 00 Without this function set the thermostat will start to hea switch ON so that the required temperature is reached at the set time at the time you set sje Press the DOWN v button to switch between on and off 208 Press OK y button to confirm OFF is Ou ESC Escape pP V Press V button to end programming and to return to scheduled ESC 130 programme 41 Reset to factory Settings room controllers Factory reset Factory settings N Press the pin button R for 3 secs and the thermostat returns to factory settings R Remember to set time day and area 4 event time and temperature temperature difference Standard Special Special Special WLCT2 x9 WLCT2 x9 R WLCT2 x9 2 WLCT2 9 HW Time Temperature Temperature Temperature Temperature Day 1 5 06 00 21 C 21 C 21 C 50 C f 08 00 19 C 19 C 19 C 30 C ac 16 00 22 C 22 C 22 C 50 C 22 30 17C 17C 17 30 C 08 00 22 C 22 C 22 C 50 C 23 00 17 C 17 C 17 C 30 C Other settings 4 event sequence 4 52 4 52 4 52 4 52 High floor limit 27 C 27 C temperature Low floor limit 17 17 17C temperature Special setting
15. pump Basic versions without display Type WLM2 1BA and WLM2 3BA The boiler relay will stop if there is no heat demand measured by the Room sensors Versions with display Type WLM2 1FS and WLM2 3FS These units have supply water temperature control and the boiler relay will be ON once the control valve has reached 2096 open and will remain on as long as a heat demand exists The master has an output for the underfloor circulating pump secondary pump The output will be energised after a 180 sec delay when any connected room sensor calls for heat The delay is to allow time for the thermal actuator to start opening The 230v AC pump can be connected directly to terminals L and under the heading Sec UFH Pump Connect the pump E Earth terminal to E earth on the master The maximum pump load must not exceed 4 amps 230v at start up There is an overrun period of 1 minute after the demand for heat from the room sensor disappears Delay times Secondary UHF pump 180 sec X output configured as main pump 190 sec Fig Ma SEG kovre UFH PUMP ot Volt free output for boiler control Secondary Volt free pump X output 230V Max 6A BR965A15b ALA OM master nave a relay which ean ba To Control X OUTPUT for DIP 5 DIP 6 DIP 7 utilized for a number of different purposes peel Boiler pump OFF OFF OFF The relay is a volt free output and is positioned os on the PCB as s
16. radiator use the special mode in the WLCT2 2 controller source in the room A like a radiator In addition to the primary underfloor heating output this WLCT2 2 controller is able to control a second output as a boost function which will be activated only if the temperature cannot be achieved by BOIEER the underfloor heating within a preset time period BR965A41a The WLCT2 2 must be fixed in a convenient position for the user but which is representative of the room or area temperature Connect the controller to the WLM2 master using the sensor controller bus Set the channel number on controller to correspond with the output on the WLM2 master that is connected to the underfloor heating actuator The next numerical output on the WLM2 master MUST be used for Type WLCT2 2 the secondary boost function While the system is in cooling mode step 2 will be disabled The 2 step controller is available in wired or wireless version Note To avoid overloading the WLM2 master we recommend that the secondary output is used as a signalling function for a remote relay Please refer to the technical information Commissioning mode Digital masters include a special commissioning mode which allows the temperature of the supply Supply temp water to be controlled to assist the drying out of a newly laid concrete floor To start this function Set DIP 4 to on This w
17. schedule program press the UP button once to show d the temperature in the display and press UP A or DOWN v again to increase or decrease the temperature 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 Ox pz V V Cancel comfort mode temporary override t To cancel the temporary override press the OK y button twice Manual mode Permanent override f During holidays the scheduled 4 event program can be overridden Press the OK y button and then the UP A E V AV 2 2201 DOWN v 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 ES J Cancel manual mode j To cancel the permanent override state press the OK y button once and the unit will resume automatic function 36 Programming 4 Event Clock Time and Temperature For each event the start time and required temperature needs to be set For example in the morning you wish the heating to start at 07 00 and the temperature to rise to 25 C Press OK y button for 3 seconds and the start time is displayed Change this to 07 00 with the UP or DOWN v button Press OK y to confirm The temperature is now displayed Change this to 25 C wi
18. to maximum The red channel 1 light should be lit and the actuator on output nr 1 will be activated and will open after 1 3 minutes depending on the type of actuator Important If the sensor controller is of a wireless type a delay of up to 5 minutes may occur before the channel light becomes illuminated Boiler will not operate during test mode unless DIP 2 is 1 2345678 activated see step 9 below Check that the UHF pump is running and the mixing valve only FS master opens TOTAL X 8 Repeat step 2 on all rooms d Boiler test function Switch on DIP 2 This closes the boiler start relay contacts for 1 minute To end all tests Switch off DIP 1 to deactivate Install mode Switch off DIP 2 to deactivate boiler test Set all temperature knobs to default positions Room sensors WLTA WLTD WLTM WLTP to zero center position Room controllers WLCT2 recommended to 21c Set all override switches on WLTM and WLTD room sensors to automatic position clock symbol Testing a network If a network of masters has been set up the communication between these must be tested When the slave masters are in install mode DIP 1 is ON the power LED will flash shortly every time a communication is detected approx every 3 sec On an WLM2 xFS network master there is a menu entry that gives a possibility to check how many masters are present on the system and if they have any errors please refer to the userguide about th
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20. DE DAISY CHAIN MASTER MASTER BUS BR935A03A Fig 10 Fig 11 SENSORS CONTROLLERS CONNECT TO ANDITO L 14 Channel Setting Channel selector BR939A01C Jumper Each Room sensor can be selected to operate a specific output which in turn controls the thermal actuators on the manifold Under the front cover of the Room sensor a selector can be accessed and the number of its output its CH channel can be set with a screwdriver See fig 10 Up to 14 channels can be set on the selector and there are two auxiliary channels see later A WLM2 master has 8 outputs and additional slave module 6 outputs and can be connected creating a system of 14 individual zones Please note that channels 10 to 14 are marked as A through E on the selector A Room sensor set for CH1 will activate the thermal actuator connected to output 1 on the master The channel number can be selected without any power connected to the system The channel of the Room sensor can be changed afterwards if needed If two Room sensors are placed in the same room and set to the same channel the temperature control will work according to the average temperature of both Room sensors Channel 0 Each Room sensor is delivered with the switch in position O ensuring that it must be set to operate correctly Channel 0 can also be used for a Room controller controlling a group of Room sensors where t
21. N ON Actuator output no 1 is used as an ON OFF signal for a dehumidifier Wiring diagram WLM2 BA 2 wire low voltage bus between the sensor controllers Connect to and Lto L Thermostats can be wired as conventional Star or as Bus NB Remember the voltage of the Thermal actuators connected mode Daisy chain 230V or 24V must correspond to the master See instruction for further explanation BR965A27b NETWORK BUS THERMAL ACTUATORS Em ETE DISP SENSOR 717 ADD ON MODULE WIRELESS RECEIVE rerit SENSOR emis for boiler control THERMAL ACTUATORS Main supply Second 230V AC from Dum x 10 Amp fused d 230V No No isolator Max 6A 1 2 LN g Timer Thermoheads X4 wivolt free contacts Open contacts for night setback module If fitted a x Q amp 8 STRING UNIT 2 To Control X OUTPUT for DIP 5 DIP 6 DIP 7 NUMBER NUMBER 8 e cot COMMON UHF PUMP Boiler pump OFF OFF OFF a High limit zone valve ON OFF OFF X RELAY 0 Cooling device module OFF ON OFFA 2974 8787778 COMMISSION MODE Cooling device module ON ON 2 E gx 8 or LEARN MODE alternative P og af BOILER TEST 52 2 2 5 289 INSTALL MODE Differential thermostat OFF OFF ON 5 2 m Q u o ON Actuator output no 1 is used as
22. OD switching module where a chiller is utilized to provide the cooling water The relay is on when there is a cooling demand For more information see the section Using cooling functions Fig 6b Cooling device module alternative The relay output is always on in cooling mode and off in heating mode For more information see the section Using cooling functions BR965A40a Differential thermostat The relay output can be used as an output that enables an alternative energy sources like solar energy 19 20 To use this besides the supply water sensor an additional sensor ETF 18994 called Application Sensor is needed in the system to detect the temperature in the water storage cylinder of the alternative energy source APP If the system detects that this temperature via the Application Sensor is more than 3 C higher than the supply SENSOR water temperature it activates the X relay to select the alternative energy source by a valve and or a pump Fig 6c High Limit Zone Valve Application Sensor High limit sensor Bypass Supply water sensor if fitted YOSNAS MANIFOLD BOILER BR965A44a MANIFOLD Thermal Actuators Thermoheads Fig 6 THERMAL ACTUATORS Ouiput Ouput2 Outputs Outputs Outputs outputs output 7 Outputs t Nje nfe wii Nft Nfe Nft
23. R see also section Installation External switch The external switch or timer function on the master module allows the whole system to be changed from the DAY Setpoint to the NIGHT Setpoint The external switch must have volt free contacts that are OPEN for NIGHT Setpoint and CLOSED for DAY Setpoint The factory fitted link wire is removed when a remote switch timer is used If a WLCT2 Room controller is employed in a part of the system the external switch action of going to NIGHT Setpoint will override the Room controller Emergency handling Exercise of valves 28 Emergency program for room control fa sensor controller is defective or if the communication to the unit is interrupted an alarm will be triggered Depending on the system configuration the regulation will continue in one of the following ways If there are several units on the same channel which have a room sensor which is still intact the regulation will continue as before however without contribution from the defective unit If no valid room sensor controller is found the system will run at constantly 20 ON If an outdoor sensor is connected the system will run 4096 at 10 C and Below decreasing to 0 at 20 C and above The emergency program is only valid for channels with heat controls channels with cooling control will always run at 10096 OFF in connection with a defective room sensor Should this not read emergency program
24. TY CHANNEL F OPERATION Channel 15 By fitting a WLTM2 x9 sensor to any WLM 2 system and setting the hex coder to Channel F it is possible to override all the automatic time and temperature functions of the master control including those areas independently controlled by a WLCT2 x9 room controller with a single override function This can be especially useful for long periods where overrides would be beneficial this many include holidays and periods of un occupation where a frost protection level needs to be maintained If a WLTM2 x9 has been set to Channel F on your system the override could not be simpler On the right hand side of the control is a slide switch with four positions each one of these affect the functionality of the system AUTO This will allow the system to run normally from the timings set on the WLM2 master and any WLCT2 x9 s DAY This will keep the system working to the Day temperature set point Any WLCT2 x9 s or sensor controlled by them will not be affected by this operation NIGHT This will keep the system working to the Night temperature set point Any WLCT2 x9 s or sensor controlled by them will not be affected by this operation OFF This will effectively turn the system OFF there is still a Frost Protection level of 50C in operation during this function If you would like this functionality added to your existing system please consult you installer or service engineer EXTERNAL TIME
25. WLM2 3FS full system Add on module for 6 zones 230V AC WLM2 1AO Add on module for 6 zones 24 WLM2 3AO TECHNICAL DATA Power Supply Max load pumps and Thermal actuators Boiler relay Volt free signal Max 4A Main pump free relay Volt free signal Max 4A Secondary pump 230V AC 50Hz Max 4A Thermal actuators 8 x 230V 8x 230V Max 10VA per output Max 35VA in total Optional External Switch Timer for night setback Open terminals for NSB Closed terminals for day operation Room sensor Bus 2 wire low voltage bus signal from Room sensors RJ14 interconnection cables CAT5 STP max 300 meters between masters and 600 meters in total Additional data for WLM2 1FS amp WLM2 3FS not applicable to the basic version Application sensor and Limit sensor Control signal for mixing valve actuator Power supply for mixing valve actuator Please help us to protect the environment by disposing of the packaging in accordance with the national regulations for waste processing Recycling of obsolete appliances Appliances with this label must not be disposed off with the general waste They must be collected separately and disposed off according to local regulations Configuring the Total System 3 Each master module is capable of controlling 8 heating zones each of which may use more B loops of piping with one or more thermal actuators 8 These zones are referred to later in this instruction
26. ach Room sensor is delivered with the switch in position O ensuring that it must be set to operate correctly Channel 0 can also be used for a Room controller controlling a group of Room sensors where the control position could be somewhere central e g the kitchen rather than in the area where the Room sensors are installed Setting it to Ch 0 means that times and temperatures are set on the WLCT2 for the group but that the WLCT2 will not control a specific output itself Channel 15 F Special function Further instructions under Section Special Features To set the Room sensors into learning mode Standard Room sensors without display Remove the front cover and push the little leaning mode button for approx 2 sec until the Room sensor give a little bib Room controller with display Press the clock symbol for 2 sec until it says init The Room sensors will now transmit its unique code in the next 30 seconds and the system has been set up To set up the system for the Master to receive signals from the Room sensors Wireless only To set the master into learning mode set DIP 3 to on The master will now look for new Room sensors that also are in learning mode Remember to set DIP 3 back to off RF LEARNINGMODE will be shown in the masters with display Setting of Room Temperature The master is supplied with default temperature settings which are used by all Room sensors that are connected to the system In Master
27. an ON OFF signal for a dehumidifier Wiring diagram WLM2 AO NB Remember the voltage of the Thermal actuators Fuse 230V or 24V must correspond to the master THERMAL ACTUATORS m e ololeloolololelo oo 2 2 2 2 012 2 2 0 0 0 0 ERE THERMAL ACTUATORS Main supply Secondar 230V AC from y a pump DX 10 Amp fused 230V No No isolator Max 6A 1 2 Thermoheads XA 2 wire low voltage bus between the sensor controllers Connect to and dto L Thermostats can be wired as conventional Star or as Bus connected mode Daisy chain See instruction for further explanation 21 22 23 24 BS Outdoor compensation module f fitted BR965A28b MASTER MODULE WIRELESS RECEIVE Description Product Programme Technical Data Type WLM2 underfloor heating controller is suitable for connecting multiple room Room sensors and electric actuators thermoheads for an underfloor or radiator based heating system Room sensors requiring a 230V or 24V live amp neutral must NOT be connected Only OJ Room sensors type WLxx that are prepared for 2 wire or wireless communication can be used Product Thermo Heads Type Master for 8 zones 230V AC WLM2 1BA basic system Master for 8 zones with display 230V AC WLM2 1FS full system Master for 8 zones 24V WLM2 3BA basic system Master for 8 zones with display 24V
28. be connected to either the WLM2 master or Add on module using either bus daisy chain or star connections Thermal actuators 1 8 are controlled by the WLM2 master and 9 14 are controlled by the Add On module Outdoor Compensation Module Type WLOC 19 Introduction The masters WLM2 1FS and WLM2 3FS are supplied already prepared for weather compensation and simply by adding the outdoor compensation module on the 2 wire bus and using the water temperature sensor on the supply water side you have a control system for weather compensation Preset values are programmed at the factory but these values can easily be adjusted according to local needs via the display on the master See the user manual Master with display type WLM for changing of the default factory settings The outdoor compensation module is mounted under the roof eaves alternative 2 3 m above ground level Direct sunlight or any other direct heating source such as air ventilation must be avoided The outdoor compensation module is mounted vertically with the cable entry downwards BR939A09A Only OJ Outdoor Compensation Modules type WLOC 19 that are prepared for 2 wire communication can be used Standard installation cable minimum 2 x0 25 mm2 can be used The outdoor compensation module can be connected in the conventional star wiring format or in a bus connected mode Daisy chain The master has 4 sets of terminals marked Room sensor BUS t
29. 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 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 26 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 22 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 ba
30. by using a standard RJ14 connection In this case it must be ensured terminal 1 is connected to terminal 1 in the other end and so on The same type of connection can be used from Master to AO module BR965A46a Master 2 These connections are not necessary but are allowed Waterline Wireless System Product Programme Technical Data WLRC2 19 Receiver Supply Voltage 24 V from Master Distance to Max 3m EHClOSUIO i eis exe xp RR Rr RR wean IP 21 Ambient temperature range 0 to 40 C Communication Frequency 868 MHz Communication distance Up to 30 m inside Up to 100 m outside Connection of Master and Receiver WLM2 Master B A ER Blue Red Brown Yellow WLRC 19 9 The receiver is connected to the master or the add on module using the included cable di cU Max distance between the master add on module and receiver is 3 m Two receivers can be Ed connected to a master or master add on system using the RJ sockets provided Additional o o receivers can be connected if necessary please refer to the dealers technical department The 4 wiring of the master and add on module receiver must be made by using the RJ14 connection points supplied to move the location of the receiver or to add an additional receiver Connect the receiver t
31. cted time of the thermostat at a late day Adjustment should be made for change in summer and winter time he clock and day will be flashing and must be set If you need to adjust the date insert a pin into the hole marked 9 see fig 1 for setting of time and er AVV Press the UP or DOWN v buttons to select the correct hours and press OK button AV y Press the UP A or DOWN v buttons to select the correct minutes and press OK button V 9 ws AV V Then press the UP A or DOWN v button to select the correct day and press OK v button 1 7 AREA SETUP see ArEA in section Advanced settings and read out Daily Use of the room sensor 4 Event Clock Mode 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 sensor has 5 days with 4 events two Sleep th Leave ON s and two OFF s and 2 days with 2 events one ON and one OFF i Return 4 event clock mode In automatic mode the clock function symbol and one of the 4 event symbols 3 O O will be automatic mode 130 indicated See next page Comfort mode 9 Temporary override Ue AV 5 secs 138 To temporarily override any temperature in the 4 event
32. d or decreased by accessing the Room controller The limits then set will apply to all relevant Room sensors with limit sensors belonging to that group If the master WLM2 1FS or WLM2 3FS is used the limit settings can be changed through the programming buttons on the master LIMIT SENSOR MAX 50m Mounting of limitation sensor Jumper mounted max limitation WAP Jumper removed min limitation Max temperature limitation is used to protect the floor area from becoming too warm This may be required if special floor surfaces real wood are used The sensor should be positioned where it can read the true temperature of the floor and should always be within the heated area Min temperature limitation is used to keep a floor surface warm irrespective of room temperature Fig 4 For example water on tiled bathrooms or pool areas with dry more quickly if the floor surface is kept warm The sensor should be positioned where it can read the true temperature of the floor and should 1 1 AY ithi always be within the heated area NN g For easy replacement we recommend that all floor sensors are mounted in a tube which is placed 3 between 2 heating pipes The inner end of the tube should be sealed and the sensor cable brought m back to the wall edge If required the sensor cable can be extended up to 50 m with a standard installation cable
33. e menu The system is now operating automatically 23 24 Factory Default Settings Additional information Master Settings Day temperature Factory settings Own settings Night temperature Off temperature Floor Limit temp high Floor Limit temp low Max water temperature Weather compensation Cold winter Outdoor temperature Water temperature Weather compensation Warm summer Outdoor temperature Water temperature 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 90 180 sec K factor 0 1 Floor Limit temperature control Adaptive PWM control P control Max allowed Room temperature fluctuation P 4 C 0 5 C Self adjusting adaptive PWM time interval limits 15 45 minutes Max number of connected sensors Wired and wireless Sensor timeouts Wired 300 sec 5 min Wireless 10000 sec 2h 45 min Minimum cooling supply water temperature 16 C Supply water temperature control PI control 20 300 sec K factor 0 05 25 Error Indication During normal operation the power LED will be ON w
34. econd string of masters all left hand encoders should be set to 2 and the right hand encoders again should be set in sequence from 1 to 9 This numbering can be continued for up to 15 strings Boiler All Masters are interconnected using special cable via the RJ14 socket 1 or 2 For further information see section Interconnection of WLM2 products All masters must be connected in a daisy chain connection and NOT in a star connection see fig 12c BR 0965 A01 An FS master can be used as the network controlling master for Fig 12b 8 ros mich 9 dna s central mixing control of supply water and boiler switching e Switching between cooling and heating be done for the whole STRING UNIT network on the network controlling master using the WLAC 1 interface NUMBER NUMBER UF 1 9 module connected to the thermostat bus S ye Time and temperatures for the whole network can be controlled by a single WLCT2 connected to the network controlling master if the WLCT2 is set to channel oF i g 1 1 r WLM2 Master 1 WLM2 Master 2 2532 8 Fig 12c THEE 8382 E 5 Master Cable 17 18 Using cooling functions WLAC oO ED 1 NI 1 E f on 50 de Sensor controll
35. er bus COMMON UHF PUMP X RELAY COMMISSION MODE LEARN MODE BOILER TEST INSTALL MODE ON 12 3 45 67 8 WLH 19 A network must always contain a network controlling master On masters set to the same string same setting on the left encoder all pumps boiler and valve outputs will act simultaneously enabling the use of a common pump on each string If only one UHF pump is used in a network DIP 8 on the network controlling master can be set to enabling the UHF pump output on this master to control a common pump for the whole system All masters in a network follows the same synchronized timing for actuators pumps boilers and mixing valve output If a lower supply water temperature is needed on one of the strings the first master on this string can be a FS master with a local mixing valve and supply water sensor attached On FS masters a special menu is available on the network master when a network is detected With this menu it is possible to check the network Please refer to the USER MANUAL for further instructions Note To test a network please refer to section Power up recommendations In addition to controlling heating all WLM2 masters have the ability to control the system for cooling To enable the cooling function an interface module WLAC and humidity sensor WLH have to be connected To use the X relay as a cooling signal controlling a chiller a reversible heat pump or d
36. hat can be used for connecting the 2 wire signal from the Room sensors and the outdoor compensation module There are 4 identical sets of terminals for convenient installation Any Room sensor outdoor compensation module can be connected to any pair of terminals The total length of the 2 wire system can be up to 300 m with a maximum length of 100 m between any 2 Room sensors outdoor compensation module Remember to connect to and to BRo65A222 30 Interconnection of WLM2 products 31 Interconnections RJ14 NETWORK BUS NETWORK BUS ADD ON MODULE WIRELESS RECEIVER PLEASE NOTE The illustration shows the internal WLM2 master RJ14 connections 1 to 4 On the WLM2 xAO module only connection points 3 and 4 are supplied Master 1 For easy installation interconnections between master modules master and add on modules and master and wireless receivers are made by pre wired plug in connectors RJ14 For connecting WLM 2 add on modules to WLM2 masters a plug in connector is provided with the add on module A WLRC wireless receiver is also connected to a WLM2 master using the plug in connector provided with the receiver For connecting a WLM2 master to another master in a network a plug in connector kit WLM NET is available CAT5 STP cable should always be used If a kit is not used it is possible to do the connection
37. he control position should be somewhere central e g the kitchen rather than in the area where the Room sensors are installed Setting it to Ch 0 means that times and temperatures are set on the WLCT2 for the group but that the WLCT2 will not control a specific output itself Channels 1 14 A Room sensor set for channel 1 will activate the thermal actuator connected to output 1 on the master If several Room sensors are set to the same channel number they will control in the following way The actual room temperature is calculated as an average The room temperature set point is calculated as an average If a limit sensor is connected to the Room sensors The lowest value of any Limit sensor is taken as the MIN Limit Temperature The highest value of any Limit sensor is taken as the Max Limit Temperature Channel 15 position F on the switch Party and vacation function Special function Further instructions in Special Features Testing the system See Guidelines and Special Features Power up recommendations Room sensors Wireless setup Fig 12 Where wireless Room sensors controllers WLTx 29 are being used is necessary for the WLM2 master to learn that the Room sensors controllers are communicating correctly To achieve this 1 On master switch on DIP 3 to activate learn mode 1 a 1 BR939A17B 2 All wireless Room sensors controllers now have to be initialized 4
38. hen 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 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
39. hown on the drawing High limit zone valve ON SET JOEF The function of the relay is determined by the Cooling device module OFF ON setting of the DIP switches The functions that the relay can perform and the Cooling device module ON ON appropriate DIP switch settings are as follows alternative Differential thermostat OFF OFF ON ON Actuator output no 1 is used as an ON OFF signal for a dehumidifier The X relay output is volt free as shown in fig 8a If the relay is required to be used as a L amp N switch connect a link wire from mains L to C1 connect the device L to C2 and the device N to mains N BR965A30c COMMON UHF PUMP Boiler pump XRELAY Where a boiler primary pump is required to be switched on from the master the relay output can be used for this purpose The relay will be activated 10 seconds after the UFH circulating pump has started COMMISSION MODE High Limit Zone Valve LEARN MODE This function is used where an additional protection is required to prevent boiler water entering the underfloor BOILER TEST system when the system is off or when the supply water exceeds 65 C INSTALL MODE An additional sensor ETF 1899A called Application Sensor as shown in fig 8b and a zone valve is connected via the X output see example fig 8c Ke 1 e NI m Cooling device module The relay output can be used to provide a volt free signal to a heatpump or to a K M
40. ill set the supply water temperature at 23c for three days and will fully open all the manifold actuators Then for a further four days the water will be supplied at the maximum supply water temperature as set in the WLM master menu and during this period the manifold actuators will remain fully open When the WLM master is operating the commissioning function this is indicated by the output LED s flashing in rotation and with the word commissioning flashing in the display The commissioning function time periods are paused if the power supply is interrupted Should you need to restart the commissioning from the beginning switch DIP 4 to OFF and back to ON BR965A30c COMMON UHF PUMP To de activate the function switch DIP 4 to OFF After 7 days the commissioning mode is ended and normal operation is re established even with DIP 4 on X RELAY COMMISSION MODE LEARN MODE BOILER TEST INSTALL MODE Note This function conforms to BS EN 1264 part 4 N T co N ic Replacing equipment Replacing a faulty sensor controller Identify the sensor controller to be changed by the blinking output LED Switch OFF power to the master 3 Change the sensor controller Important Set the channel selector on the new sensor controller to the same channel as the defective sensor controller that is replaced Switch ON power to the master 5 Set the master into learnmode
41. iverting valves please refer to the section Free relay function X OUTPUT On BA masters it is also necessary to install a sensor ETF 1899 on the return water pipework from the floor for dewpoint control The sensor must be connected to terminal 49 and 50 Using the WLAC 1 module The WLAC must be fixed in a convenient position for the user and connected to the sensor controller bus as shown in the drawing If a BMS system in being used for the heating cooling decision the volt free BMS signal EXT should be connected to the WLAC but the slider switch on the right side of the WLAC must be set to the heating position in this situation the BMS signal has priority and we recommend that the slider toggle be removed to avoid incorrect overriding Humidity sensor WLH 19 By using the humidity sensor WLH the system limits the formation of condensation on floor surfaces due to high humidity The WLH must be fixed in a room that represents the general humidity level in the building and connected to the sensor controller bus more than one WLH can be used if necessary e g on separate floors of the building Where more than one humidity sensor is used the master will take the reading of the sensor detecting the highest DEW point level for the controlling action e f a dehumidifier is being used it can be connected via a relay using number 1 output on the master and setting DIP 7 to on Note This output gives either 24Vac or 230Vac de
42. m can be up to 300 m with a maximum length of 100 m between 2 Room sensors Remember to connect to and to Wireless Room sensors Insert batteries 43 Gs 4 1 Q 000000 NGF Channel selector Button learning mode 1 TT 1 J Button learning BR939A17B Jumper Setting up which Room sensor should work with which thermal actuator Each Room sensor can be selected to operate a specific output which in turn controls the thermal actuators on the manifold Under the front cover of the Room sensor a selector can be accessed and the number of its output its CH channel can be set with a screwdriver Up to 14 channels can be set on the selector and there are two auxiliary channels with special functions A WLM2 master has 8 outputs and additional slave modules each with 6 outputs can be connected creating a system of 14 individual zones Please note that channels 10 to 14 are marked as A through E on the selector A Room sensor set for CH1 will activate the thermal actuator connected to output 1 on the master The channel number can be selected without any power connected to the system The channel of the Room sensor can be changed afterwards if needed If two Room sensors are placed in the same room and set to the same channel the temperature control will work according to the average temperature of both Room sensors Channel 0 E
43. o the master and the system will reconfigure itself for wireless operation Do not place the receiver inside a metal box In case of communication problems it may be necessary set up the system See Quickguide 32 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 In addition to the standard WLCT2 x9 r
44. oom 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 Fig1 Buttons lt y 5 EN a g Display Adjustment OK down accept V v oo F DA A ii O O O on Adjustment Reset to Pin button E up factory adjust of setting clock 33 B C D 34 Display 5 3 1 P1 I1 L1 WZ o Setting the room controller into operation G H I Automatic Manual Time and mode mode temperature J K Day number 4 event symbol xt Wake f Out lt Night Ne Home First time power is conne
45. or DOWN v button to change settings Confirm the et 130 required scale with the OK button V button ie F Ar ER 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 amp 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 y button CH 1 will be displayed use the OK y button and then the UP button to change the setting to ON Press OK y and 2 is displayed Use the UP A button until is displayed press OK y and change to ON Repeat this for CH 5 All three room sensor
46. pending on the WLM2 master type Channel number 1 cannot be used for Room controller control in this situation When cooling is enabled the cooling set point will be pre determined by the master and will override any settings in any Room controller to ensure optimum energy efficiency The cooling set point will be 3C above the master day set point Domestic hot water control It is possible to control the domestic hot water temperature with a special controller WLCT2 HW to SEXSORCONTROUER ensure optimum energy saving A hot water sensor is connected to the controller and measures the temperature in the storage cylinder A zone valve is then controlled via the WLM2 master which in turn activates the boiler on demand i J 51 52 53 s BR965A32a Install the hot water senser ETF on the hot water take off pipe immediately above the storage cylinder Use the fixing strap to mount it tight to the surface The WLCT2 HW must be fixed in convenient position for the user Connect the hot water controller WLCT2 HW to the WLM2 master using the sensor controller bus e Connect the hot water sensor to the controllers sensor terminals WLCT x9 HW JHGTWATER e Connect the hot water zone valve to an output on the WLM2 master and set the channel number on the hot water controller to the corresponding number 21 22 723 24 SENSORICONTROUER BUS CHANNEL SELECTOR SET TO OUTPUT 1 The hot water cont
47. roller is available in wired or wireless version REMOTE SENSOR Note When the WLCT2 HW calls for heat it does not start the circulation pump on the under floor heating system CYLINDER Hot Water cylinder BR965A42a BOILER Type WLCT2 HW Hot Water Sensor 19 Radiator control Radiator It is possible to control a radiator circuit room temperature with a special controller WLCT2 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 BOILER BR965A43a The WLCT2 R must be fixed in a convenient position for the user but which is representative of the room or area temperature Connect the controller to the WLM2 master using the sensor controller bus Connect the radiator zone valve to an output on the WLM2 master and set the channel number on the Room controller to the corresponding number The special Radiator controller is available in wired or wireless version WLM2 BA FS Note When the WLCT2 R calls for heat it does not start the circulation pump on the under floor heating system While the System is in Cooling mode all radiator circuits will Type WLCT2 R be off 2 step heating It is possible to control a secondary heat source in a room e g a Additional heat backup
48. s 2 step time 60 min 2 step TC Waterline Room sensors 42 Introduction Fig 1 BR939A04B To remove front Fig 2 BR939A05A MASTER Room sensors Room sensors connected connected instar chain Daisy Chain Product programme WLTP 19 29 Room sensor tamper proof WLTA 19 29 Room sensor with adjustment WLTM 19 29 Room sensor with adjustment and mode switch Auto Day Night OFF WLTD 19 29 Room sensor with adjustment mode switch Auto Day Night OFF and limit sensor WLCT2 19 29 Room controller with 4 event clock Mounting of Room sensor fig 2 The Room sensor is used for comfort temperature control in rooms The Room sensor is mounted on an internal wall with free air circulation about 1 6 m above the floor Draught direct sunlight or any other direct heating source must be avoided Wired Room sensors Only OJ Room sensors type WLxx that are suitable for 2 wire communication can be used Standard installation cable minimum 2 x 0 25 mm2 can be used The Room sensors can be connected in the conventional star wiring format or in a bus connected mode Daisy chain The master has 4 sets of terminals marked Room sensor BUS that can be used for connecting the 2 wire signal from the Room sensors There are 3 identical sets of terminals for convenient installation Any Room sensor can be connected to any pair of terminals The total length of the 2 wire syste
49. s 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 39 Gn OFF 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 2st This menu is only visible on 2 step controllers WLCT2 x9 2 2 step Change of values 2 step function V z Um o V w o O 00 0 Ju Press the DOWN v button to activate or de activate the 2 step function Press OK to confirm The display will now show TEMP Press OK to continue Use the UP A or DOWN v button to change the temperature 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 The display will now show TEMP Press OK to continue Use the UP A or DOWN v button to change the time in minutes before step 2 is activated 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 40 Adaptive function This function enables the thermostat to calculate when it
50. t and OFF Qo 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 BR939A08B eut 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 Adjustment typically 17 C knob OFF It will control the room temperature according to the OFF setting defined in the master NE typically 5 This setting is intended to be frost protection mode and is used if the room is to be left unoccupied for long periods WLTM 19 29 amp WLTD 19 29 are recommended for guest rooms and other infrequently used rooms as they allow simple override of the automatic timing sequence Limit Sensor WLTD and WLCT2 Room sensors controllers with a limit sensor have a mechanical jumper on the printed circuit board allowing the limitation to be set for MIN or MAX temperature control If set for MAX it will have a temperature setting of 27 C Set for MIN it has a setting of 17 C These temperature are fixed when used with masters WLM2 1BA or WLM2 3BA unless the Room sensor has been allocated to a zone group controlled by a WLCT2 Room controller In this case the limit settings can be increase
51. t free relay output that can be used to control a boiler or to open a motorised valve BR965A14a A To control a boiler that requires switching of the live supply take a link from L 230V to the terminals marked BOILER B1 Connect the boiler L to the terminal marked BOILER B2 Connect the boiler N terminal to the N terminal on the master and the boiler E to the master terminal E see fig 7A B To control a boiler that has a pair of dedicated terminals for remote switching e g by a Room sensor connect these terminals to B1 and B2 on the master B1 and B2 terminals are volt free so they can be used for both a 240V and a 24V circuit from the boiler Main supply 230V AC from 10 Amp fused isolator Boiler ii 10 SUPPLY LON BOWLER B1 B2 BR965A33a Main supply 230V AC from 10 Amp fused isolator Motorised Valve 230v i SEC Fig 5 m UFH EE PUMP B2 e c2 L N Volt free output for boiler control Secondary Volt free pump X output 230V BR965A15b C To control a motorised valve Many motorised 2 port spring return valves have wires coloured BROWN and BLUE for power connections In this case BROWN goes to the terminal B2 under the heading BOILER and BLUE goes to the N terminal of the master Then a link from L 230V to the terminals marked Boiler B1 The boiler relay will be energised after a delay of 10 sec after the start of the main
52. th the UP A or DOWN v button Press OK y button to confirm 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 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 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 v once more Note that when programming the Sleep time event 4 please ensure that this time is before midnight 00 00 Press OK y button for secs to begin programming Day1 5 X d temperature i BAV i SAN UII eaten 600 2007 j O Time and t t 4 wAVV i aw AV V Time and temperature 800 1507 i i fr Ti d t ture 4 04 w AV V Od AVV 4 Time and tempera 1600 2207 i 4 NVV 1 4 zAVV Time and temperature 2230 1507 Day6 7 wAVV 3 Time and temperature 800 2207 4 4 e AVV Time and temperature 2300 8 507 37 Advanced Settings and Press both UP and DOWN v buttons together for 3 seconds INFO is displayed Continue pressing the UP A button until you reach one of the desired sub menus PRO
53. tion Channel Setting Room sensors Wireless setup Supply water temperature sensor and mixing valve Special Functions Creating a network Using cooling functions Domestic hot water control Radiator control 2 step heating Commissioning mode Replacing equipment Replacing a faulty sensor controller Guidelines and Special Features Power up recommendations Factory Default Settings Error Indication Special Features Temperature amp Control Emergency handling Exercise of valves Add On Module Configuring the Total System Outdoor Compensation Module Type WLOC 19 ntroduction Mounting BUS CONNECTION Outdoor Compensation Module Interconnection of WLM2 products nterconnections Waterline Wireless System Product Programme Connection of Master and Receiver Position Master To set up the system Type WLCT2 and WLCT2 R HW 2 ntroduction Getting Started Daily Use of the room sensor Programming 4 Event Clock Time and Temperature Advanced Settings and Read out Reset to factory Settings room controllers Waterline Room sensors ntroduction Setting of Room Temperature Setting of Room sensor Operating Mode Limit Sensor WLTD and WLCT2 WLM2 Underfloor Heating Controller Wiring diagram WLM2 FS NB Remember the voltage of the Thermal actuators 230V or 24V must correspond to the master THERMAL ACTUATORS L N Nfe nfu nfu nde N DISP i 2
54. ttery 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 3 flashes The limit sensor on the room sensor controller is defective Replace the faulty sensor Reset is NOT required 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 v 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
55. tures 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 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 ie AV V The maximum allowable floor temperature setting is shown Use ewe the UP A or DOWN v button to increase or reduce and OK y button to accept m IZ V The display will now show LoLi Press OK y button to continue 19 19 The minimum allowable floor temperature setting Use the UP pe or DOWN v button to increase or reduce and OK y button to nut SCAL Time and temperature scale selection 24 t ce You can select either or F scale and 12 or 24 hour clock as follows 24 F rs Ox mr aan Press UP A
56. wN 31 a2 33 ss az 3o 40 4 42 44 45 46 e elelelelelelelelelelelo l BR965A17a w volt free contacts Open contacts for night setback 12 BR965A16a These actuators are fitted to the underfloor heating manifolds and control the supply of water through the various loops The voltage of the thermal actuators 230V or 24V must correspond to the master Master type WLM2 1BA and WLM2 1FS are for 230 V thermal actuators and master type WLM2 3BA and WLM2 3FS are for 24V Thermal actuators Up to 8 different zones can be controlled by the master Connect the thermal actuators on the loop s for each zone to the corresponding terminals on the master Thermal actuators belonging to zone 1 must be connected to output terminal 1 and thermal actuators for zone 2 must be connected to output terminal 2 etc etc Guideline More than 1 head can be connected to a single terminal provided that the heads are to be controlled by the same room Room sensors Controllers Connect the Brown wire to the L terminal and the Blue wire to the N terminal When the installation is complete check that the Room sensor in e g room zone 1 operates the correct thermo actuator s for that room on the manifold If the heads appear to be in the wrong position on the manifold it may be simpler to change them on the manifold rather than reconnecting them on the master From factory the
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