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LightwaveRF Comfy LW920 Professional Series, Instruction Manual

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LightwaveRF Comfy LW920 Professional Series Instruction Manual Download Page 28

Typical wiring for a multi-zone (S plan plus) setup

Room thermostat 1 (with neutral wire connection) to be replaced by 
Boiler Switch which requires additional live and earth connections.

Connecting 
wires

Neutral connection

Room 
thermostat 2

Connecting wires

Zone 

valve 1

Zone 

valve 2

Install 4: S plan plus (multizone)

Summary of Contents for Comfy LW920 Professional Series

Page 1: ...Professional Series www lightwaverf house Boiler Switch Model No LW920 Instruction Manual Version 2 2 ...

Page 2: ...999 5 EC R TTE Directive 93 68 EEC CE Marking Directive Standards Applied in order to verify compliance Safety BS EN 60730 1 2011 Health R TTE EN 301 489 1 V1 9 2 2011 09 EN 301 489 3 V1 4 1 2002 08 EN 300 220 1 V2 1 1 2006 EN 300 220 2 V2 1 2 2007 EMC EN 301 489 1 V1 9 2 2011 09 EN 301 489 3 V1 4 1 2002 08 EN 55022 2010 EN 61000 3 2 2006 A1 2009 A2 2009 Class A EN 61000 3 3 2008 EN61000 4 2 2009 ...

Page 3: ... how to link the Boiler Switch to the LightwaveRF Home Thermostat To install the Boiler Switch you must understand how to safely turn off the electricity supply and be comfortable with following some basic wiring instructions You will also need suitable electrical screwdrivers Help video further guidance For additional guidance and to watch a video that will help guide you through the installation...

Page 4: ...eer It is important to install this product in accordance with the following instructions Failure to do so may void your warranty Off LED When illuminated boiler is off Boost button Temporarily turns on boiler On LED When illuminated boiler is on Overview Standby button Turns boiler on off Linking button Press to enter linking mode Front view Installation ...

Page 5: ...ole cover not removed Wiring terminals Tightening Screws Rear view with backplate removed IMPORTANT If conducting an insulation resistance test all LightwaveRF products must be disconnected from the mains or damage will occur Close up of wiring terminals Installation ...

Page 6: ...sure about how to use any of these tools and materials or any stage of the installation process always consult a qualified electrician or heating engineer Cross head screwdriver Flat head screwdriver Wire cutters Wire strippers Torch Electrical tape 5 core cable Sharp Knife Installation ...

Page 7: ...g centre needs to be accessed make sure that no power is being received If in doubt always consult a qualified electrician Ensure that the Boiler is earthed Never take unnecessary risks if unsure as damage can be caused by an incorrect installation Do not strip the outer sheathing of flexible cables more than necessary to prevent short circuits Ensure that all cords pass through the cable clamps i...

Page 8: ...crew holes gently lift the backplate away from the main unit and slide it down Once the hooks are free from their mountings the backplate should slide free Screws Hook Once the backplate has been removed the cable clamp needs to be unscrewed ready to accommodate the wires There are also two capped holes situated at the base of the unit One of these or two depending on the number of cables used nee...

Page 9: ...m boiler which supplies both a hot water tank and the central heating There is a single motorised valve which distributes heated water to either the hot water tank the heating or both It will usually include a room thermostat 3 S plan system this also consists of a system boiler supplying both a hot water tank and the central heating In this case there are two motorised valves one regulating the s...

Page 10: ... a combi boiler will always include a room thermostat RT terminal into which a thermostat can be wired This is where the LightwaveRF Boiler Switch should be connected see next page Optional room thermostat usually located in the hallway Wired connection Standard combi boiler The thermostat is wired into the room thermostat RT terminal in boiler standard terminal in all combi boilers 1 Wiring to a ...

Page 11: ... mains power from terminals located next to the room thermostat terminal Standard combi setup with LightwaveRF Boiler Switch Existing external thermostat disconnected The Boiler Switch is connected to the room thermostat terminal in the boiler It also takes live mains from the boiler The wireless LightwaveRF Home Thermostat replaces the existing one and controls the boiler via the Boiler Switch In...

Page 12: ...rom the support menu Please continue to follow the general instructions provided here whilst referring to your boiler manual to find the exact location of the appropriate terminals described You should most importantly refer to the main boiler wiring diagram for circuit wiring information If you have a Y plan and S plan or a multi zone system that utilises a wiring centre then you will need to ref...

Page 13: ...s to the boiler wiring centre inside the boiler You should refer to your specific boiler manual to find out how to do this Make sure that you turn off the mains power to the boiler In a standard combi the wiring centre is usually located behind the front cover The example shown below represents a common Vaillant combi boiler Install 1 combi boiler ...

Page 14: ... sensor or TS Be aware however that the terminology in some boiler manuals may vary There may be a jumper small loop of cable connecting the two terminals as in the diagrams below This needs to be carefully removed If this terminal already has an existing thermostat connected to it then this should be disconnected Locate the room thermostat RT terminal Example Alpha and Vaillant Boiler wiring diag...

Page 15: ...e Boiler Switch when wall mounted Prepare the cables The Boiler Switch also needs to take mains power from the boiler This can be routed from live neutral and earth terminals located in the wiring centre You should refer to your boiler manual to locate them Locate mains power terminals The terminals are usually located next to or near to the room thermostat connection The picture on the right show...

Page 16: ...he terminal arrangement on your boiler may differ so please refer to your specific boiler manual for guidance Room thermostat terminals Normally open common and normally closed relay contacts closed position shown NOTE 5 core cable shown 3 core power and 2 core RT connection cables can be used instead if necessary Install 1 combi boiler ...

Page 17: ... in your boiler manual Note that damage may occur to the boiler if mains voltage is incorrectly introduced to a low voltage circuit so take great care 230V can be introduced to the circuit by jumping from the live terminal as shown below Room thermostat terminals requiring 230V Live mains jumped from the second L terminal across to the common terminal Install 1 combi boiler ...

Page 18: ...tored in the tank and or circulated in the central heating system A motorised valve allows flow to the tank the radiators or both together A room thermostat controls the flow to the heating by opening or closing the valve This thermostat needs to be disconnected at the wiring centre and replaced by the Boiler Switch Wiring centre Motorised valve System boiler Heating hot water Install 2 Y plan ...

Page 19: ...ires and terminals that they are connected to There should be two main switching wires usually white and black In some cases there will also be a neutral connection usually blue Make a note of the locations before disconnecting the wires as they may not be marked Locate mains power terminals The Boiler Switch also needs to take mains power This can be routed from live neutral and earth terminals l...

Page 20: ... wiring for a Y plan setup Room thermostat with neutral wire connection to be replaced by Boiler Switch which requires additional live and earth connections Connecting wires Neutral connection Install 2 Y plan ...

Page 21: ...and add live neutral and earth as shown in the diagram Remember that the terminal arrangement in your wiring centre may not be identical this is an approximate guide only Room thermostat terminals Normally open common and normally closed relay contacts closed position shown NOTE 5 core cable shown 3 core power and 2 core room thermostat connection cables can be used instead Install 2 Y plan ...

Page 22: ...ses The system boiler produces hot water which is stored in the tank and or circulated in the central heating system Two motorised valves allow flow to the tank the radiators or both together A room thermostat controls the flow to the heating by opening or closing the heating valve This thermostat needs to be disconnected at the wiring centre and replaced by the Boiler Switch Room thermostat Insta...

Page 23: ...s wire connections and terminals that they are connected to There should be two main switching wires usually white and black In some cases there will also be a neutral connection usually blue Make a note of the locations before disconnecting the wires as they may not be marked Locate mains power terminals The Boiler Switch also needs to take mains power This can be routed from live neutral and ear...

Page 24: ...g for an S plan setup Room thermostat with neutral wire connection to be replaced by Boiler Switch which requires additional live and earth connections room thermostat connections Neutral connection Install 3 S plan ...

Page 25: ...and add live neutral and earth as shown in the diagram Remember that the terminal arrangement in your wiring centre may not be identical this is an approximate guide only Room thermostat terminals Normally open common and normally closed relay contacts closed position shown NOTE 5 core cable shown 3 core power and 2 core room thermostat connection cables can be used instead Install 3 S plan ...

Page 26: ... constituent elements of a multi zone S plan plus system This system resembles the S plan system see previous section but includes multiple motorised valves each controlling a heating zone A separate thermostat controls each zone valve Each one needs to be disconnected at the wiring centre and replaced by a Boiler Switch Install 4 S plan plus multizone ...

Page 27: ... and terminals that they are connected to There will be a connected thermostat for each zone valve present each with two main switching connections usually white and black In some cases a thermostat may also have a neutral connection usually blue Make a note of the locations before disconnecting the wires as they may not be marked Locate mains power terminals Each Boiler Switch also needs to take ...

Page 28: ... thermostat 1 with neutral wire connection to be replaced by Boiler Switch which requires additional live and earth connections Connecting wires Neutral connection Room thermostat 2 Connecting wires Zone valve 1 Zone valve 2 Install 4 S plan plus multizone ...

Page 29: ...ve neutral and earth as shown in the diagram Remember that the terminal arrangement in your wiring centre may not be identical this is an approximate guide only Room thermostat connections Normally open common and normally closed relay contacts closed position shown NOTE 5 core cable shown 3 core power and 2 core room thermostat connection cables can be used instead Install 4 S plan plus multizone...

Page 30: ...late includes two screw holes which allow the plate to be mounted to a wall using suitable screws Once mounted the main unit can be slotted back into place and the screws tightened Once the cable s have been connected the cable clamp needs to be reattached in order to secure them and to ensure that they cannot become dislodged from the terminal connections The cable s should run through holes situ...

Page 31: ...atic control or separate mode of operation If your boiler has an internal timer or clock ensure that it is switched to Always ON or alternatively disabled If there is an internal thermostat for heating make sure that this is set to Maximum Please refer to your specific boiler manual to see how this is done Set to heating internal thermostat to max Leaved switched on Set to always on and disable th...

Page 32: ...our Boiler from your smartphone using the LightwaveRF App This section will show you how to setup the basic functions of the Boiler Switch The following section will show you how to link the Boiler Switch to a Home Thermostat in order to integrate it into your heating system To achieve smartphone control of the Boiler it must normally be linked to a LightwaveRF Home Thermostat which in turn must b...

Page 33: ...button If not connected to a Home Thermostat pressing the Standby button on the Boiler Switch toggles the Boiler on and off Once the Boiler Switch is linked to a Home Thermostat pressing Standby will toggle between the set on and setback temperatures stipulated by this device see Home Thermostat and App instructions to learn how to do this When connected to a Home Thermostat if the heating is on p...

Page 34: ...emperature The Boost button A LightwaveRF Heating Handset can be linked to a Boiler Switch via a Home Thermostat Once linked the Standby button on the Handset will toggle between Running and Standby modes in the same way as the Standby button on the Switch The Boost button operates the Switch Boost button The plus and minus arrows on the handset will raise or lower the target temperature a few deg...

Page 35: ... on the Home Thermostat Link Ok should appear on the display to indicate a successful link To unlink a Home Thermostat press and release the Linking button on the Boiler Switch and then press the Standby button This activates unlinking mode Press the Link button on the Thermostat The deleted should flash on the screen indicate that the devices have been unlinked To completely clear the memory of t...

Page 36: ...ls several TRVs Heating Remote sets house temp Window Trigger open window turns off TRV TRV controls radiator Room by room radiator control Lightwave App control any room from anywhere Boiler Switch turns boiler on off Home Thermostat monitors house temp Add other heating devices ...

Page 37: ...ithout having to get up and alter the thermostat or boiler This can be achieved using the LightwaveRF Home Thermostat Boiler Switch and Heating Remote You can turn the temperature up and down boost the heating for an hour or simply turn it on off Use the Remote to control the Home Thermostat from the comfort of the sofa and this will in turn relay the commands to the Boiler Switch Heating scenario...

Page 38: ...e care of your entire home Temperatures can be set for each room or heating zone and heating can be planned week by week and room by room If you have electric radiators you can still achieve this by connecting them to Electric Switches You can also link wet radiators using TRVs AND electric radiators and schedule them together for a totally integrated heating system Heating scenarios ...

Page 39: ... myself A Yes LightwaveRF products are fully legal to install in your own home Q Is it possible to overload the Switch A 7A max loading applies and should not be exceeded Q Can I link more than one Boiler Switch to a Thermostat A No The Boiler Switch is designed to be controlled by a single thermostat and each Home Thermostat is only capable of being linked to one Boiler Switch More than one Boile...

Page 40: ...Specification RF frequency 868 MHz Input 230V Rating 7 Amps Warranty 2 year standard warranty Technical Specification ...

Page 41: ...Version 2 2 2 Quadrant Park Mundells Welwyn Garden City Herts AL7 1FS 01707 386035 www lightwaverf house ...

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