OJ Electronics WLM3 Installation Manual Download Page 7

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The WLM3 underfloor heating controller is suitable for connecting multiple room controllers/sensors and

electric actuators (thermoheads) for an underfloor or radiator-based heating system.

only oJ room controllers/sensors type Wlxx3 that are prepared for 2 wire or wireless communication

can be used. For information on previous generations, see “special Features - replacing old masters”.

Description

Product programme

Product

thermoheads type

Master for 8 zones

230V AC

WLM3-1BA (basic system)

Master for 8 zones with display

230V AC

WLM3-1FS (full system)

Master for 8 zones

24V AC

WLM3-3BA (basic system)

Master for 8 zones with display

24V AC

WLM3-3FS (full system)

Add-on module for 6 zones

230V AC

WLM3-1AO

Add-on module for 6 zones

24V AC

WLM3-3AO

lM3 under

floor heating contr

oller

Summary of Contents for WLM3

Page 1: ... 2015 OJ Electronics A S 67345 02 15 HKT WLDT3 www ojelectronics com Installation Manual WLM3 WLCT3 WLTD3 WLTA3 ...

Page 2: ...sures the best possible comfort conditions and also reduces energy consumption Highlights of the system depending on the units connected 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 with wired and wireless connection Network communication for large ap...

Page 3: ...30 Certifications 30 Disposal and recycling 30 Technical specifications 31 Waterline Add On Module Type WLM3 xAO 33 Overall system configuration 33 Technical specifications 33 Waterline Outdoor Compensation Module Type WLOC3 34 Introduction 34 Installation 34 Bus connection 34 Technical specifications 34 Waterline Wireless Receiver Type WLRC3 35 Connection of receiver to master 35 Position 35 Mast...

Page 4: ...N OFF Common UHF PUMP Commission mode X RELAY Learn mode Boiler test Install mode WLM2 Compatible ON OFF Control String number 1 F Unit number 1 9 BR1025A11a BR1025A10a 2015 OJ Electronic A S 9 10 GB ON OFF Common UHF PUMP Commission mode X RELAY Learn mode Boiler test Install mode WLM2 Compatible ON OFF Control BR1025A10a To control X OUTPUT X relay for DIP 5 DIP 6 DIP 7 Boiler pump OFF OFF OFF H...

Page 5: ...N OFF Common UHF PUMP Commission mode X RELAY Learn mode Boiler test Install mode WLM2 Compatible ON OFF Control String number 1 F Unit number 1 9 BR1025A11a BR1025A10a 2015 OJ Electronic A S 9 10 GB ON OFF Common UHF PUMP Commission mode X RELAY Learn mode Boiler test Install mode WLM2 Compatible ON OFF Control BR1025A10a To control X OUTPUT X relay for DIP 5 DIP 6 DIP 7 Boiler pump OFF OFF OFF H...

Page 6: ... 2015 OJ Electronics A S L N L N BR1025A08a 2015 OJ Electronic A S WLOC3 GB Wiring diagram WLM3 AO Continuously PE only BR1025A08a 6 WLM3 underfloor heating controller ...

Page 7: ...ommunication can be used For information on previous generations see Special Features Replacing old masters Description Product programme Product Thermoheads Type Master for 8 zones 230V AC WLM3 1BA basic system Master for 8 zones with display 230V AC WLM3 1FS full system Master for 8 zones 24V AC WLM3 3BA basic system Master for 8 zones with display 24V AC WLM3 3FS full system Add on module for 6...

Page 8: ...ng with one or more thermal actuators These zones are referred to later in this manual as channels 1 to 8 If more than eight zones are to be controlled it is necessary to install an add on AO module which provides another six outputs The AO module then controls channels 9 to 14 Overall system configuration Green Power supply connected Red Night setback active Red flashing Error X OUTPUT function a...

Page 9: ...inuously PE only Electrical installation Boiler demand heat source The master has a volt free relay output that can be used to control a boiler heat pump or to open a motorised valve A To control a heat source that requires switching of the live supply take a link from L 230V to the terminal marked BOILER B1 Connect the heat source L to the terminal marked BOILER B2 Connect the heat source N termi...

Page 10: ... delay allows time for the thermal actuator to start opening The 230V AC pump can be connected directly to terminals L and N under the heading SEC UHF PUMP Connect the pump PE earth terminal to the PE earth terminal on the master Maximum pump load must not exceed 4 amps 230V at start up There is an overrun period of 1 minute after heat is no longer demanded by the room sensor Delay times Secondary...

Page 11: ...rovide cooling water The relay is ON when there is a cooling demand For further information see Using cooling functions Cooling device module alternative The relay output is always ON in cooling mode and OFF in heating mode For further information see Using cooling functions Differential thermostat The relay output can be used to enable use an alternative energy source e g solar energy In this cas...

Page 12: ...lete check that the room sensor in for example room zone 1 operates the thermal actuator s on the manifold intended for that room If the actuators appear to be in the wrong position on the manifold it may be simpler to interchange them on the manifold rather than reconnect them on the master BR1025A12a BR1025A12a 2015 OJ Electronic A S COOLING SWITCH GB Timer W volt free contacts Open contacts for...

Page 13: ...l length of the 2 wire system can be up to 300 m with a maximum length of 100 m between any two units For further information see the table below Remember to connect to and to Table Length of cable Standard cable Max cable length from master to room controller sensor with display Max cable length from master to room controller sensor without display 0 25 mm2 Up to 100 m Up to 300 m 0 50 mm2 Up to ...

Page 14: ...ust therefore be set to operate correct channel output Channel 0 can also be used for a room controller which is only used to control a group area of room sensors without actually controlling the room in which it is installed e g a controller in the kitchen which is only used to control sensors located in other rooms Setting the room controller to channel 0 means that times and temperatures must b...

Page 15: ...oom controllers sensors Initialize analogue room sensors WLTA3 WLTD3 and WLTM3 by removing the plastic battery pull tab or pressing the internal initialization button learning mode button until a beep is heard Initialize digital room controllers sensors WLCT3 and WLDT3 by pressing the pinhole button learning mode button beside the clock or I symbol until a beep is heard When communication with a r...

Page 16: ... will vary the supply water temperature setting according to the outdoor temperature A standard factory programmed compensation curve is used for this purpose If needed the curve can be changed see separate USER MANUAL MASTER TYPE WLM3 Mixing valve actuator control A mixing valve actuator can be controlled by digital WLM3 xFS masters The actuator must be 24V AC powered max 6VA and positioned via a...

Page 17: ...lug in connectors RJ14 For connecting WLM3 add on modules to WLM3 masters a plug in connector is provided with the add on module Similarly a WLRC3 wireless receiver is connected to a WLM3 master using the plug in connector provided with the receiver For connecting a WLM3 master to another master in a network a plug in connector kit WLM NET is available CAT5 cable should always be used If a connect...

Page 18: ...t be connected in a daisy chain NOT in a star formation see fig 13c An FS master can be used as the network controlling master to control central mixing of the supply water and boiler activation The network controlling master can also switch between cooling and heating for the whole network using the WLAC3 interface module connected to the thermostat bus Time and temperatures for the whole network...

Page 19: ...nal to control a chiller reversible heat pump or diverting valve see Free relay function X OUTPUT With BA masters where dew point control is required it is also necessary to install a sensor ETF 522 on the return water pipe of the floor heating system The sensor must be connected to terminals 49 and 50 Using the WLAC3 module The WLAC3 module must be installed in a convenient position for the user ...

Page 20: ...ntroller to the corresponding number The special radiator controller is available in wired or wireless version NOTE When the WLCT3 is in radiator mode and heat is demanded it does not start the circulating pump of the underfloor heating system When the system is in cooling mode all radiator circuits will be off Special functions Type WLCT3 Type WLCT3 Radiator mode 2 step mode BR1025A22a BR1025A22a...

Page 21: ... off pipe immediately above the storage cylinder Use a fixing strap to attach it tightly to the surface The WLCT3 should be installed in a convenient position for the user With the WLCT3 in hot water mode connect it to the WLM3 master using the sensor controller bus Connect the hot water sensor to the sensor terminals of the controller Connect the hot water zone valve to an output on the WLM3 mast...

Page 22: ... commissioning mode the output LEDs will flash consecutively and the word commissioning will flash on the display The commissioning function is paused if the power supply is interrupted To restart commissioning from the beginning switch DIP 4 to OFF and then back to ON To deactivate the function switch DIP 4 to OFF After 7 days commissioning mode is ended and normal operation is resumed even with ...

Page 23: ...switching DIP 3 to ON 6 If the sensor controller is wireless press the learning mode button on the sensor controller See Installation under Waterline Room Sensors Type WLTx If the sensor controller is wired proceed to step 7 7 Check that the corresponding output LED has changed from flashing to permanently ON 8 Reset DIP 3 to OFF Important Set the channel selector on the new sensor controller to t...

Page 24: ... the actuator on output 1 should activate opening after a 1 3 minute delay depending on the type of actuator Important If the room sensor controller is of wireless type a delay of up to 5 minutes may occur before the channel LED lights up The boiler will not operate during test mode unless DIP 2 is activated see step 9 below 7 Check that the UHF pump is running and that the mixing valve FS master ...

Page 25: ...er Settings Factory settings BA FS Cooling mode Day cooling temperature Day heating temperature 3 0 C Night cooling temperature Day cooling temperature 3 0 C Dew point safety zone Dew point 3 0 C Room temperature control PI control P 5 0 C I 90 min Floor Limit temperature control P control P 4 0 C Adaptive PWM control Max permissible room temperature fluctuation 0 5 C PWM time interval limits 15 4...

Page 26: ... system The error can be corrected by setting the channel number of the unit to one that exists in the installed master add on module system E3 3 flashes Application sensor defective The fault can only be corrected by replacing the temperature sensor If the sensor has been deliberately removed to change system operation the master must be hard reset see next page E4 4 flashes The outdoor compensat...

Page 27: ...ing cooling mode but the channel is already active engaged Channels 2 14 used as step 2 output in 2 step mode but the channel is already active engaged Channels 1 14 used for humidification humidity sensor but the channel is already active engaged RESET Two different reset actions can be used HARD RESET only valid in day temperature mode sun symbol Press the OK button for 5 seconds to initiate a h...

Page 28: ...uld not be simpler On the right hand side of the controller is a slide switch with four positions which determines system functionality AUTO This allows the system to run automatically according to the times set on the WLM3 master and any WLCT3s DAY This keeps the system running according to the day temperature setpoint Any WLCT3s or sensors controlled by them will not be affected by this operatin...

Page 29: ...ensor controller is found the system will run constantly at 20 ON If an outdoor sensor is connected the system will run at 40 at outdoor temperatures of 10 C or lower decreasing to 0 at 20 C or more The emergency program is only available for channels used for heating control Channels used for cooling control will always run at 100 OFF in connection with a defective room sensor With heating and co...

Page 30: ...Master CE 1993 68 EEC LVD low voltage directive 2006 95 EC EMC electromagnetic compatibility 2004 108 EC RoHS restriction on the use of certain hazardous substances 2011 65 EU WEEE waste electrical and electronic equipment 2012 19 EU For other components see the relevant instructions Applied standard s Master EN 60730 1 EN 60730 2 9 Recycling of packaging Protect the environment by disposing of th...

Page 31: ...e valves 8 outputs max 2 A direct Boiler max 5 A voltage free Main pump max 5 A voltage free Sec pump max 5 A direct Control input Setback temperature etc Temperature settings permanent settings Room temperature 21 C Setback temperature 18 C Frost protection 5 C Max floor temperature 27 C Min floor temperature 17 C Max supply water temperature 55 C Wireless communication Can be achieved by connect...

Page 32: ...perature settings Factory settings Range Room temperature 21 C 5 40 C Setback temperature 18 C 5 40 C Frost protection 5 C 3 8 C Max floor temperature 27 C 20 40 C Min floor temperature 17 C 10 30 C Max supply water temperature 55 C 25 85 C Weather compensation Factory settings Range Low outdoor temperature 3 C 20 10 C Supply water temperature 45 C 30 60 C High outdoor temperature 25 C 10 30 C Sup...

Page 33: ... xAO which provides another six outputs The AO module then controls channels 9 to 14 9 E on the hex encoder Connection of master and add on module Connect the AO module using the special cable included in the box Connect a fused 230V AC mains supply The sensor bus can be connected to either the WLM3 master or add on module using either bus daisy chain or star connections Thermal actuators 1 8 are ...

Page 34: ...at sources e g ventilation vents must be avoided The unit should be mounted vertically with the cable entry downwards Bus connection Only OJ units which are suitable for two wire communication can be used Standard installation cable of minimum 2 x 0 25 mm can be used Units can be connected in conventional star formation or in bus mode daisy chain The master has 4 sets of terminals marked SENSOR CO...

Page 35: ...rs can be connected to a master or a master add on system using the RJ sockets provided Additional receivers can be connected if necessary please ask your distributor s technical department The master add on module and receiver must be connected using the RJ14 connection points supplied Connect the receiver to the master and the system will reconfigure itself for wireless operation See Quick Guide...

Page 36: ...rol over Area 1 The WLTA3 sensor installed in Area 1 now has a control range of 18 C 22 4 C to 24 C 22 4 C In addition to the standard WLCT3 room controller you may have added one of the following to your system 2 step mode This mode controls a secondary heat source operating in a specific area as a boost function in conjunction with the underfloor heating Radiator mode This mode is used to contro...

Page 37: ...controlled from this WLCT3 must be selected NOTE If you need to adjust the time at a later date insert a pin into the hole marked for setting the clock AREA SETUP see next page Press the UP or DOWN button to select the correct hours and then press the OK button Press the UP or DOWN button to select the correct minutes and the press the OK button Then press the UP or DOWN button to select the corre...

Page 38: ...output on the master which controls the valve actuator for that room Example A system may have the kitchen room sensor operating master output 4 and the children s room sensor operating master output 5 If the WLCT3 room controller is situated in the living room and operates output 1 the WLCT3 must be programmed to control output channels 1 4 5 1 Press the UP or DOWN button to select the channel ro...

Page 39: ...formation on programming see Programming 4 Event Clock Time and Temperature Comfort mode Temporary override To temporarily override any temperature in the 4 event schedule press the UP button once to show the temperature in the display Then press the UP or DOWN button to increase or decrease the temperature The display flashes for 5 seconds and then reverts to the time Override will operate until ...

Page 40: ...e can now be repeated for the second third and fourth events These settings will be valid for days 1 5 as shown on the display To program 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 switch heating OFF for an event by reducing t...

Page 41: ...Room temperature Outdoor temperature If no sensor is installed OFF is displayed Press the UP or DOWN button to view the various read outs No changes can be made here Use the OK button to exit App Application Select if the room controller is to be used in one of the special modes On entering this menu the current setting will be displayed Radiator mode Operates the channel as a radiator zone Operat...

Page 42: ... tolerance before the second output is allowed to activate The menu is only shown if 2 step mode is set to ON timE sets the time during which temperature is permitted to be too low before the second output is activated the output with the next number The menu is only shown if 2 step mode is set to ON Hot water mode Operates the channel as a thermostat for a domestic hot water cylinder Operates as ...

Page 43: ...ys Indicated by Code 2 52 Select the required sequence with the OK button Escape without any changes Hi Li Floor sensor Max and min permissible floor surface temperatures A floor limit sensor can be connected to the room controller Max limitation is used for safety purposes to prevent excessive floor temperatures Wooden flooring should for example not be allowed to exceed 27 C The value can be set...

Page 44: ...channels set as part of the WLCT3 area will follow the automatic temperature settings of this room controller 4 event timer min and max floor temperature limits Set a channel room to ON if it is to be part of this area Example An area could be the living room kitchen and children s rooms all of which have a high temperature requirement during the afternoon and early evening and a lower temperature...

Page 45: ...d channel will always be ON cannot be set to OFF AdAP Adaptive function This function enables the thermostat to calculate when it needs to switch the heating ON to ensure that the required temperature is reached by the set time With a start time of 07 00 for example the thermostat may switch ON as early as 06 00 so that the desired temperature of 25 C is achieved by 07 00 Without this function set...

Page 46: ...ON Ch 2 Living room ON 4 event times and temperatures Own settings Standard Mode Radiator mode 2 step mode Hot water mode Time Temperature Temperature Temperature Temperature Time Temperature Days 1 5 06 00 21 0 C 21 0 C 21 0 C 50 0 C 08 00 19 0 C 19 0 C 19 0 C 30 0 C 16 00 22 0 C 22 0 C 22 0 C 50 0 C 22 30 17 0 C 17 0 C 17 0 C 30 0 C Days 6 7 08 00 22 0 C 22 0 C 22 0 C 50 0 C 23 00 17 0 C 17 0 C ...

Page 47: ...nly be activated if the required temperature cannot be achieved by the underfloor heating alone within a preset time period The room controller is used as a standard WLCT3 If required the settings for when the second heating output is needed can be changed by your service engineer For information on programming see Advanced Settings and Read outs Hot water mode It is possible to control domestic h...

Page 48: ...re available and allows connection of a floor sensor for minimum or maximum floor temperature limitation instructions Introduction Getting started Waterline Room Sensor with Display Type WLDT3 BR1026A10a BR1026A10a 2015 OJ Electronic A S A B C D F E R Display G K I Auto mode Manual comfort mode Manual setback mode Indication of actual room temperature and setpoint offset G I K K Installation A B C...

Page 49: ...ong with the actual temperature The temperature is now controlled only by the master s comfort setpoint factory setting 21 C overriding any programmed 4 event schedules in the system Use the UP or DOWN button to adjust the relative setpoint like in automatic mode Setback mode Fixed setback mode Press the OK button once to activate In setback mode a moon symbol is shown along with the actual temper...

Page 50: ...view the room and floor temperatures actually measured The floor temperature is only shown if a floor sensor is installed Software version Room temperature Floor temperature If no sensor is installed OFF is displayed Press the UP or DOWN button to view the various read outs No changes can be made here Use the OK button to return SCAL Temperature scale selection Here you can chose either C or F tem...

Page 51: ... can be used Units can be connected in conventional star formation or in bus mode daisy chain The master has four sets of terminals marked SENSOR CONTROLLER BUS that can be used for connecting the 2 wire signal cable from the unit There are 4 identical sets of terminals for convenient installation Any unit can be connected to any pair of terminals The total length of the 2 wire system can be up to...

Page 52: ...perate correct channel output Channel 0 can also be used for a room controller which is only used to control a group area of room sensors without actually controlling the room in which it is installed e g a controller in the kitchen which is only used to control sensors located in other rooms Setting the room controller to channel 0 means that times and temperatures must be set on the WLCT3 for th...

Page 53: ...e has been selected on their built in slide switches their temperature settings will be as programmed in the WLCT3 room controller and not in the master Local 4 C adjustment will however still be possible Room sensors type WLTM3 and WLTD3 have a slide switch see fig 4 for selecting the mode of operation of the sensor Four different modes can be selected Auto Day Night and OFF Auto The room sensor ...

Page 54: ... read the true temperature of the floor and should always be within the heated area To ease replacement we recommend that all floor sensors are mounted in a tube positioned between two heating pipes The inner end of the tube should be sealed and the floor sensor cable led back to the bottom of the wall If required the sensor cable can be extended up to 50 m with a standard installation cable WLTM3...

Page 55: ... 2015 OJ Electronics A S 55 ...

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