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Ahlsell Products Heating and Sanitation Installation pipes and parts Underfloor heating systemsUnderfloor heating, LK

Underfloor heating, LK

Looking for underfloor heating systems for your HVAC project? At Ahlsell, you will find a carefully selected selection of underfloor heating systems. There are many different products in our range - so you can find the one that's right for you. Among our installation pipes and parts, you will find a variety of styles. Our HVAC experts are happy to assist you in finding the right equipment to deliver a high-quality result. Find out more about our underfloor heating systems here on our website or visit your nearest Ahlsell store.

Products (132)

Heat circuit distributor RF, LK

Heat circuit distributor RF, LK

Art. no.: 2419353

Stainless steel underfloor heating distributor with integrated adjustment valves, flow indicators, thermometers as well as venting and refill valves.
The distributor is supplied pre-assembled on bracket. The by-pass distributor includes marking plates, protective bag (protection for e.g. concrete splashing when casting) and assembly instructions. Connection of heating supply can be done either from the right or left side. The distributor is available with connections from 2 to 12 underfloor heating circuits. The heating circuit distributor can be supplemented with 2 shut-off valves (RSK 241 75 50), LK By-Pass RF and LK Connection couplings RF for relevant pipe dimensions.

Heat circuit distributor RF, LK

Heat circuit distributor RF, LK

Heat circuit distributor RF, LK

Heat circuit distributor RF, LK

Heat circuit distributor RF, LK

Shunt 2/3-4.0, LK

Shunt 2/3-4.0, LK

Art. no.: 2417823

Shunt group intended for systems with a main pump. Its capacity can be set as default
for a heating requirement of 50 W/m² to a max. of 700 m² floor heating area.
However, the capacity depends on the primary temperature, pressure and the method of laying, etc.
The shunt group is supplied complete and factory-installed.
• Can be installed in left or right configuration
• Wilo Stratos Para 25/1-8 circulation pump, with automatic speed regulation,
Single-phase1 230 V AC, 50 Hz, max. 140 W, 1.3 A
• Control valve Kvs 4.0 re-settable between 3 and 2-way versions
• Adjustment valve for primary circuit
• Non-return valve
• 2 x contact thermometer
• Shut-off valves
• Wall bracket
LK Shunt can be supplemented by LK Styr v.3 (RSK 241 73 25).

Room thermostat S1, Underfloor Heating, LK

Room thermostat S1, Underfloor Heating, LK

Art. no.: 2417287

Electronic, soundless room thermostat with Triac outlet and electronic feedback. For the best energy efficiency the room thermostat works with so-called self-modulating technology via signal pulsing to the valve actuators. The self-modulating technology adapts the underfloor heating output in relation to the set temperature. When the room temperature gets close to the set temperature, the output is reduced to avoid excessive temperatures.

Room thermostat ArcTune, LK

Room thermostat ArcTune, LK

Art. no.: 2410474

LK ArcTune is a room thermostat intended for use with LK Room Regulation Arc.
Interaction with LK ArcTune takes place either via LK's app MyLK or via the room thermostat. When interacting, the thermostat shows the current and desired temperature in the room.

LK ArcTune can communicate with LK ArcHub either wirelessly (complete with LK ArcBatteries) or wired (complete with LK ArcByWire).

LK ArcTune is available in white and black. To be completed with wall bracket ArcFrame.

Note! Delivery dates Q1 2024

Room thermostat ArcTune, LK

Actuator 24V AC, room control, LK

Actuator 24V AC, room control, LK

Art. no.: 2417591

For individual room/zone control for LK Heating circuit manifolds VKF/ VKF-i. The actuator is used together with LK Wired or LK Wireless room control systems.

Web server ICS.2, LK

Web server ICS.2, LK

Art. no.: 2417035

2 to access/control an LK Room Control ICS.2 via internet connection. LK Webserver ICS.2 can also be used as a wireless communication bridge.

Frame ArcFrame, LK

Frame ArcFrame, LK

Art. no.: 2410477

LK ArcFrame is a wall bracket intended to be used for LK ArcSense or LK ArcTune.
LK ArcFrame is available in white and black and in different shapes and sizes for adaptation to the property's other contacts and switches.
LK ArcFrame is delivered including screws and plugs and has a hole pattern adapted to the standard appliance box.

Note! Delivery dates Q1 2024

Frame ArcFrame, LK

Frame ArcFrame, LK

Frame ArcFrame, LK

Frame ArcFrame, LK

Frame ArcFrame, LK

Track board CombiBoard EPS, LK

Track board CombiBoard EPS, LK

Art. no.: 2410464

LK Floor heating in execution with LK CombiBoard EPS for laying on load-bearing floor construction. The system is built with an insulation board in EPS class S300 provided with a laminated heat distribution layer for optimal heat spread. LK CombiBoard EPS has a high insulating ability and very good properties for short and long-term load.The EPS boards are equipped with pipe grooves and integrated turning grooves.

LK CombiBoard EPS 14 with integrated turning tracks - track distance c/c measurement 160 mm - for 12 mm pipe
LK CombiBoard EPS 18 with integrated turning tracks - track distance c/c measurement 200 mm - for 16 mm pipe
LK CombiBoard EPS 30 with integrated turning tracks and cross tracks - track distance c/c measurement 200 mm - for 16 mm pipe
LK CombiBoard EPS 50 with integrated turning tracks and cross tracks - track distance c/c measurement 200 mm - for 16 mm pipe
LK CombiBoard EPS 70 with integrated turning tracks and cross tracks - track distance c/c measurement 200 mm - for 16 mm pipe

Track board CombiBoard EPS, LK

Track board CombiBoard EPS, LK

Track board CombiBoard EPS, LK

Track board CombiBoard EPS, LK

Underfloor heating pipe, LK

Underfloor heating pipe, LK

Art. no.: 2416716

Polyethylene pipe with oxygen diffusion barrier for underfloor heating systems. Max operating pressure 6 bar. Max continuous operating temperature 60°C (short-term loading 70°C).

Underfloor heating pipe, LK

Underfloor heating pipe, LK

Underfloor heating pipe, LK

Underfloor heating pipe, LK

Underfloor heating pipe, LK

Milling template HF22, LK

Milling template HF22, LK

Art. no.: 2419874

Milling template HF22 is intended for milling pipe turns in LK HeatFloor 22 or LK Groove Disc EPS 30/50/70.
The template is used together with LK Frässtål HF22.

Connection Box NO 230/24 V, power-off open function, LK

Connection Box NO 230/24 V, power-off open function, LK

Art. no.: 2410459

LK Junction box NO is used for connecting and powering the LK Room thermostat 24V NO and LK Actuator 24V NO. The box has a built-in transformer 230/24V AC 40VA.
Up to 8 LK Room thermostats 24V NO and max 12 LK Actuators 24V NO can be connected to the box. The box is equipped with a voltage-free relay which allows the connection of a circulation pump. The junction box has an integrated 24-hour valve and pump logic exercise program.

Connection Box NO 230/24 V, power-off open function, LK

Distributor cabinet GV, LK

Distributor cabinet GV, LK

Art. no.: 2410313

LK GV distributing box is intended to be used where hidden LK is required. Heating circuit distributor RF.

Distributor cabinet GV, LK

Distributor cabinet GV, LK

Distributor cabinet GV, LK

Distributor cabinet GV Prefab, LK

Distributor cabinet GV Prefab, LK

Art. no.: 2434720

LK GV distribution box Prefab is supplied as a complete unit with mounted LK heating circuit distributor RF.

Coupling Inv gg, accessory for heating circuit distributors, LK

Coupling Inv gg, accessory for heating circuit distributors, LK

Art. no.: 2417463

Straight coupling with internal thread intended for PE/PE-X pipe.

Heating pipe PE-Xa RiR LK

Heating pipe PE-Xa RiR LK

Art. no.: 2417829

Supplied installed in an empty pipe of HD Polyethylene and intended to be used as a supply pipe between the heat source and LK Heating circuit manifold.

Heating pipe PE-Xa RiR LK

Heating pipe PE-Xa RiR LK

Heating pipe PE-Xa RiR LK

Floor heating pipe PE-Xa, for underfloor heating only, LK

Floor heating pipe PE-Xa, for underfloor heating only, LK

Art. no.: 2417503

Floor heating pipe PE-Xa, for underfloor heating only, LK

Floor heating pipe PE-Xa, for underfloor heating only, LK

Floor heating pipe PE-Xa, for underfloor heating only, LK

Floor heating pipe PE-Xa, for underfloor heating only, LK

Floor heating pipe PE-Xa, for underfloor heating only, LK

Actuator adapter VA, LK

Actuator adapter VA, LK

Art. no.: 2434616

Room thermostat RF ICS.2, LK

Room thermostat RF ICS.2, LK

Art. no.: 2434620

Wireless room thermostat with backlit display for clear and simple function display.
In addition to other functions, the display shows the set and actual temperature, heat on/off, operation mode, and error messages.

Room thermostat RF ICS.2, LK

Connection coupling RF, accessory for heating circuit distributor, LK

Connection coupling RF, accessory for heating circuit distributor, LK

Art. no.: 2417298

For connection of pipe to LK Heating circuit distributor RF.

Air vent RF, accessory for heating circuit distributor, LK

Air vent RF, accessory for heating circuit distributor, LK

Art. no.: 2417299

Intended for Heating circuit distributor RF. The air vent is mounted instead of one of the distributor’s manual air vent. The air vent has both a manual and automatic air vent function. The threaded connection is supplied with O-ring seal for heating circuit distributor.

External Thread Coupling, accessory for heating circuit distributors, LK

External Thread Coupling, accessory for heating circuit distributors, LK

Art. no.: 2417464

Adaptor coupling for LK Underfloor heating pipe.

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Art. no.: 2417475

For LK mini shunt.

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Mini Distributor, Accessory for Heating Circuit Distributor, LK

Regulating 2-Port Ball Valve, Belimo

Regulating 2-Port Ball Valve, Belimo

Art. no.: 2417550

Shut-off valve for LK Heating circuit distributor RF.

Pipe bending support, accessory for heating circuit distributor, LK

Pipe bending support, accessory for heating circuit distributor, LK

Art. no.: 2417560

Pipe bending support for LK Universal-/ Heating pipe. As an accessory there is the LK Fixing plate (RSK 241 79 02) for fixing of pipe bending support.

Fixing plate, accessory for heating circuit distributor, LK

Fixing plate, accessory for heating circuit distributor, LK

Art. no.: 2417902

Provides fixing for LK Pipe bending support RSK 241 75 60 when mounting. Room for 8 underfloor heating circuits on one plate. Ability to join more plates for increased number of underfloor heating circuits. Made of polyethylene.

Angle Ball Valve G25xR25, Accessory for Heating Circuit Distributor, LK

Angle Ball Valve G25xR25, Accessory for Heating Circuit Distributor, LK

Art. no.: 2417958

Shut-off valve for LK Heating circuit distributor RF.

Straight connection set, accessory for heating circuit distributor, LK

Straight connection set, accessory for heating circuit distributor, LK

Art. no.: 2418110

Straight coupling with external thread intended for PE/PE-X pipe.

Angle connection set, accessory for heating circuit distributor, LK

Angle connection set, accessory for heating circuit distributor, LK

Art. no.: 2418112

Connection kit for connection PEX feed pipe to LK Heating circuit distributor VKF.

Transition nipple ext/int, accessories for heat circuit distributor, LK

Transition nipple ext/int, accessories for heat circuit distributor, LK

Art. no.: 2419617

LK Transition nipple can be used when LK OptiFlow EVO II, G25 is to be installed. Transition nipple is also suitable for LK Distribution control.

Transition nipple ext/int, accessories for heat circuit distributor, LK

Transition nipple ext/int, accessories for heat circuit distributor, LK

Return valve VKF/VKF-i, accessory for heating circuit distributor, LK

Return valve VKF/VKF-i, accessory for heating circuit distributor, LK

Art. no.: 2418431

Replacement valve for LK Heating circuit distributor VKF and VKF-i. The return valve is located on the lower distributor pipe, normally fitted with actuator.

By-Pass RF, accessory for heating circuit distributor, LK

By-Pass RF, accessory for heating circuit distributor, LK

Art. no.: 2419469

Complete kit for mounting of by-pass with kvs 0.05 to LK Heating circuit distributor RF. The by-pass extends the installation by 15 mm.

Heat exchanger package 10, LK

Heat exchanger package 10, LK

Art. no.: 2418810

The LK Heat exchange pack has in mind glycol blend floor heating systems which need to be separated from the other heating system, for example outhouses, conservatories, garages, i.e. spaces which you want to maintain at a low temperature in winter or alternatively can be switched off without risk that the underfloor heating system freezes.

Universal tube PE-Xa, LK

Universal tube PE-Xa, LK

Art. no.: 1882540

Supplied in roll, in carton package.

Universal tube PE-Xa, LK

Pipe holder bracket, in a bag of 100 pieces, for embedding in concrete, LK

Pipe holder bracket, in a bag of 100 pieces, for embedding in concrete, LK

Art. no.: 2417517V

Intended for fastening the pipe at turns when installing LK Underfloor heating strip or LK System board.

Floor heating list, Underfloor heating, for embedding in concrete, LK

Floor heating list, Underfloor heating, for embedding in concrete, LK

Art. no.: 2417699

For LK Universal pipe/LK Underfloor heating pipe. Intended to be used where the required additional insulation is installed. The strip is fastened to the insulation with LK Pipe holder bracket RSK 241 75 17 or 241 81 08. The strip is fastened to concrete flooring by screwing, pressing or nailing. Tip! For a more convenient and quicker installation of LK Underfloor heating strip 16, use LK Staple gun 3D Premium with associated staples.

Pipe shell 16-20, for embedding in concrete, LK

Pipe shell 16-20, for embedding in concrete, LK

Art. no.: 2419485

LK Pipe holding nails 16-20 are intended for fastening of LK Universal pipes/LK Heating pipes in the dimensions 16-20 when laying on the insulation.

Floor plate 16, LK

Floor plate 16, LK

Art. no.: 2417549

With 3 grooves c/c 200 mm suitable for LK Universal pipe 16 mm. Hot dip zinc-coated heat distribution plate 0.5 mm for underfloor heating installations between floor joists with a c/c of 600 mm between the joists and where a self-supporting floor is to be laid directly on the floor joists.

Track turntable Wood 22, on floor joists, LK

Track turntable Wood 22, on floor joists, LK

Art. no.: 2417818

Flooring grade chipboard, 22 mm with turning groove on the upper side c/c 200 mm for LK Universal pipe dim. 16 mm. The board is available in two quality classes, standard V20 and moisture resistant V313. Build height incl. pipe 22 mm. Turning groove on the upper side. Can be fitted in both open and closed floor structures. 4 slots for entry to/exit from the joist compartments.

Heat distribution plate 16/190, LK

Heat distribution plate 16/190, LK

Art. no.: 2418009

LK Heat distribution plate for LK Universal pipes.
Made of 0.45 mm aluminium. The heat distribution plate is intended for LK Slotted board Wood 22 and XPS 30 and 50 mm. The heat distribution plate can also be used for underfloor heating installations on spaced panel. The plate is prepared with break notches

Groove board Heat Floor 22, for floor joists, LK

Groove board Heat Floor 22, for floor joists, LK

Art. no.: 2418902

Flooring grade chipboard, 22 mm, with tongue on all four sides. The board has 3 grooves c/c 200 mm for LK Universal pipe 16 mm. Available in two quality classes, standard V20 and moisture resistant V313. The slotted board must be complemented with LK Heat distribution plate 16/190, RSK 241 80 09. Build height incl. pipe 22 mm.

Floor heating list, LK

Floor heating list, LK

Art. no.: 2417748

For LK Underfloor heating pipes. Intended to be used where the required additional insulation is installed. The insulation is fastened to the strip with LK Pipe holder RSK 2417517 or 2418108. The strip is fastened to concrete flooring by screwing, pressing or nailing.

Groove board EPS16, for load-bearing floors, LK

Groove board EPS16, for load-bearing floors, LK

Art. no.: 2418215

Slotted board of EPS with a full cover aluminium heat distribution plate.

Feeder Plate EPS 16, on load-bearing floor, LK

Feeder Plate EPS 16, on load-bearing floor, LK

Art. no.: 2418217

Feeding board of cellular plastic, 16 mm, is intended to be used with LK Slotted board EPS 16. The feeding board is used to route the heating pipe dim. 12 mm to each underfloor heating area/room. Short-term load ISO 844, 400 kPa. Long-term load 140 kPa (2% comp. to 50 years). Insulation capacity 0.034 W/m °C.

Press Coupling PV Straight Ext. Male, LK

Press Coupling PV Straight Ext. Male, LK

Art. no.: 2417041

Press coupling for LK heating pipe PE-X. Red ring colour.

Press Coupling PV Straight, LK

Press Coupling PV Straight, LK

Art. no.: 2417040

Press coupling for LK heating pipe PE-X. Couplings in dim. AX16 and A32 have grey ring colour. Couplings in dim. 20 x 2.0 and 25 x 2.3 have red ring colour.

Press Coupling PV Straight - CU, LK

Press Coupling PV Straight - CU, LK

Art. no.: 2417053

Press coupling for LK heating pipe PE-X. Red ring colour.

Room thermostat S1 Dti, LK

Room thermostat S1 Dti, LK

Art. no.: 2417289

Electronic with Triac output adapted to LK Underfloor heating system.

Frame S1, room control, LK

Frame S1, room control, LK

Art. no.: 2417292

LK Pattress S1 is used where necessary to increase the thermostat’s mounting area. Intended for LK Room thermostat S1, S1 EXT and S1 Dti. Colour, white polished RAL 9010.

External sensor ICS, room regulation, LK

External sensor ICS, room regulation, LK

Art. no.: 2417323

LK External Sensor ICS is an accessory to LK Thermostat ICS-RF or LK Thermostat ICS-W to, for example, control the floor temperature.

Terminal Block 1, room control, LK

Terminal Block 1, room control, LK

Art. no.: 2417328

Terminal block 1 is a single connection terminal block used when you want to control the temperature in smaller underfloor heating systems.

Thermostat valve set Mini (NO), room control, LK

Thermostat valve set Mini (NO), room control, LK

Art. no.: 2417338

Thermostat vent set is used for individual control of each underfloor heating loops on LK Mini manifold.

Transformer, room regulation, LK

Transformer, room regulation, LK

Art. no.: 2417747

Transformer with plug and cable for connection to LK Connection terminal block 1, LK Actuator relay 24 V and LK Electronic Thermostat TR 26.

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