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    LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together. Svenska English Deutsch Italiano Yкраїнська Suomi

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    LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further. Svenska English Norsk Suomi

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    Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength. English

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    LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA. Svenska English
LK HydronicGroup C/C 125

LK HydronicGroup C/C 125

  • All in one
  • Easy to install
  • Easy to combine with electronic regulation

LK HydronicGroup is a complete pump group that is suitable for heating where direct supply or mixed supply is desirable. Consists of a highly efficient circulation pump, insulation, wall mounting bracket and tw...

Read more

LK HydronicGroup C/C 125

  • Variants
  • Detailed Information
  • Documentation
  • Videos
  • Accessories & Spare parts

Variants

LK 860 - Manifold

LK 860 - Manifold 7 variants

Article Type Dim. Note Weight (kg) Item List
182419 Manifold, 1 pc groups with hydraulic separator M 1½" 0.4 MPa (4 bar) 5.0
182348 Manifold, 2 pc groups, without hydraulic separator M 1½" 0.4 MPa (4 bar) 6.0
182350 Manifold, 2 pc groups with hydraulic separator M 1½" 0.4 MPa (4 bar) 7.0
182349 Manifold, 3 pc groups, without hydraulic separator M 1½" 0.4 MPa (4 bar) 8.0
182351 Manifold, 3 pc groups, with hydraulic separator M 1½" 0.4 MPa (4 bar) 9.0
182417 Manifold, 4 pc groups, without hydraulic separator M 1½" 0.4 MPa (4 bar) 9.0
182418 Manifold, 4 pc groups, with hydraulic separator M 1½" 0.4 MPa (4 bar) 10.0

182419

Type Manifold, 1 pc groups with hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 5.0
Item list

182348

Type Manifold, 2 pc groups, without hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 6.0
Item list

182350

Type Manifold, 2 pc groups with hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 7.0
Item list

182349

Type Manifold, 3 pc groups, without hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 8.0
Item list

182351

Type Manifold, 3 pc groups, with hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 9.0
Item list

182417

Type Manifold, 4 pc groups, without hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 9.0
Item list

182418

Type Manifold, 4 pc groups, with hydraulic separator
Dim. M 1½"
Note 0.4 MPa (4 bar)
Weight (kg) 10.0
Item list
LK 861 - Pump group with direct supply

LK 861 - Pump group with direct supply 2 variants

Article Dim. DN Weight (kg) Item List
299458 M 1½" / F 1" x M 1½" DN 25 5.0
299459 M 1½" / F 1" x M 1½" DN 32 5.2

299458

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Weight (kg) 5.0
Item list

299459

Dim. M 1½" / F 1" x M 1½"
DN DN 32
Weight (kg) 5.2
Item list
LK 861 - Pump group with direct supply. Without pump

LK 861 - Pump group with direct supply. Without pump 1 artikel

Article Dim. Weight (kg) Item List
299460 M 1½" / F 1" x M 1½" 3.1

299460

Dim. M 1½" / F 1" x M 1½"
Weight (kg) 3.1
Item list
LK 862 R - Pump group with mixed supply. Right version

LK 862 R - Pump group with mixed supply. Right version 3 variants

Article Dim. DN Kvs m³/h Weight (kg) Note Item List
299462 M 1½" / F 1" x M 1½" DN 25 6,3 5.3
299464 M 1½" / F 1" x M 1½" DN 32 10,0 5.5
396164

New

 M 1½" / F 1" x M 1½" DN 25 6,3 5.8 LK 950 (180759)

299462

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 5.3
Note
Item list

299464

Dim. M 1½" / F 1" x M 1½"
DN DN 32
Kvs m³/h 10,0
Weight (kg) 5.5
Note
Item list

396164

New

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 5.8
Note LK 950 (180759)
Item list
LK 862 L - Pump group with mixed supply. Left version

LK 862 L - Pump group with mixed supply. Left version 2 variants

Article Dim. DN Kvs m³/h Weight (kg) Item List
299461 M 1½" / F 1" x M 1½" DN 25 6,3 5.3
299463 M 1½" / F 1" x M 1½" DN 32 10,0 5.5

299461

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 5.3
Item list

299463

Dim. M 1½" / F 1" x M 1½"
DN DN 32
Kvs m³/h 10,0
Weight (kg) 5.5
Item list
LK 862 - Pump group with mixed supply. Without pump

LK 862 - Pump group with mixed supply. Without pump 2 variants

Article Dim. Kvs m³/h Weight (kg) Item List
299465 M 1½" / F 1" x M 1½" 6,3 3.1
299466 M 1½" / F 1" x M 1½" 10,0 3.1

299465

Dim. M 1½" / F 1" x M 1½"
Kvs m³/h 6,3
Weight (kg) 3.1
Item list

299466

Dim. M 1½" / F 1" x M 1½"
Kvs m³/h 10,0
Weight (kg) 3.1
Item list
LK 863 - Pump group with thermic mixing valve

LK 863 - Pump group with thermic mixing valve 2 variants

Article Dim. DN Note Weight (kg) Item List
299467 M 1½" / F 1" x M 1½" DN 25 Temperature: 25 - 45 °C 5.8
299468 M 1½" / F 1" x M 1½" DN 32 Temperature: 25 - 45 °C 6.0

299467

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Note Temperature: 25 - 45 °C
Weight (kg) 5.8
Item list

299468

Dim. M 1½" / F 1" x M 1½"
DN DN 32
Note Temperature: 25 - 45 °C
Weight (kg) 6.0
Item list
LK 863 - Pump group with thermic mixing valve. Without pump

LK 863 - Pump group with thermic mixing valve. Without pump 1 artikel

Article Dim. Note Weight (kg) Item List
299469 M 1½" / F 1" x M 1½" Temperature: 25 - 45 °C 4.0

299469

Dim. M 1½" / F 1" x M 1½"
Note Temperature: 25 - 45 °C
Weight (kg) 4.0
Item list
LK 864 - Pump group with thermic loading valve, LK 823 ThermoVar®

LK 864 - Pump group with thermic loading valve, LK 823 ThermoVar® 4 variants

Article Dim. DN Kvs m³/h Note Weight (kg) Item List
299470 M 1½" / F 1" x M 1½" DN 25 9,0 Opening temperature: 55 - 70 °C 5.7
299471 M 1½" / F 1" x M 1½" DN 32 9,0 Opening temperature: 55 - 70 °C 5.9
299787 M 1½" / F 1" x M 1½" DN 25 9,0 Opening temperature: 45 - 60 °C 5.7
299788 M 1½" / F 1" x M 1½" DN 32 9,0 Opening temperature: 45 - 60 °C 5.9

299470

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Kvs m³/h 9,0
Note Opening temperature: 55 - 70 °C
Weight (kg) 5.7
Item list

299471

Dim. M 1½" / F 1" x M 1½"
DN DN 32
Kvs m³/h 9,0
Note Opening temperature: 55 - 70 °C
Weight (kg) 5.9
Item list

299787

Dim. M 1½" / F 1" x M 1½"
DN DN 25
Kvs m³/h 9,0
Note Opening temperature: 45 - 60 °C
Weight (kg) 5.7
Item list

299788

Dim. M 1½" / F 1" x M 1½"
DN DN 32
Kvs m³/h 9,0
Note Opening temperature: 45 - 60 °C
Weight (kg) 5.9
Item list
LK 864 - Pump group with thermic loading valve, LK 823 ThermoVar®. Without pump

LK 864 - Pump group with thermic loading valve, LK 823 ThermoVar®. Without pump 1 artikel

Article Dim. DN Kvs m³/h Note Weight (kg) Item List
299962 M 1½” / F 1” x M 1½” DN 25 9,0 Opening temperature: 55 - 70 °C 3.5

299962

Dim. M 1½” / F 1” x M 1½”
DN DN 25
Kvs m³/h 9,0
Note Opening temperature: 55 - 70 °C
Weight (kg) 3.5
Item list
LK 865 - Complete unit for hot water circulation

LK 865 - Complete unit for hot water circulation 1 artikel

Article Dim. Note Weight (kg) Item List
299472 F 1" x M 1" Opening temperature: 35 - 65 °C 4.9

299472

Dim. F 1" x M 1"
Note Opening temperature: 35 - 65 °C
Weight (kg) 4.9
Item list
LK 865 - Complete unit for hot water circulation. Without pump

LK 865 - Complete unit for hot water circulation. Without pump 1 artikel

Article Dim. Note Weight (kg) Item List
299963 F 1" x M 1" Opening temperature: 35 - 65 °C 2.7

299963

Dim. F 1" x M 1"
Note Opening temperature: 35 - 65 °C
Weight (kg) 2.7
Item list
LK 866 - Pump group with a four way mixing valve, LK 841 ThermoMix®

LK 866 - Pump group with a four way mixing valve, LK 841 ThermoMix® 1 artikel

LK 866 - Pump group with a four way mixing valve, LK 841 ThermoMix®

Article Dim. DN Kvs m³/h Weight (kg) Item List
299747 M 1½" / F 1" x M 1" DN 25 6,3 5.3

299747

Dim. M 1½" / F 1" x M 1"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 5.3
Item list
LK 866 - Pump group with a four way mixing valve, LK 841 ThermoMix®. Without pump

LK 866 - Pump group with a four way mixing valve, LK 841 ThermoMix®. Without pump 1 artikel

Article Dim. DN Kvs m³/h Weight (kg) Item List
299964 M 1½" / F 1" x M 1" DN 25 6,3 3.1

299964

Dim. M 1½" / F 1" x M 1"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 3.1
Item list
LK 867 - Pump group with a four way mixing valve, LK 830 ThermoMix® B

LK 867 - Pump group with a four way mixing valve, LK 830 ThermoMix® B 1 artikel

Article Dim. DN Kvs m³/h Weight (kg) Item List
299765 M 1½" / F 1" x M 1" DN 25 6,3 5.3

299765

Dim. M 1½" / F 1" x M 1"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 5.3
Item list
LK 867 - Pump group with a four way mixing valve, LK 830 ThermoMix® B. Without pump

LK 867 - Pump group with a four way mixing valve, LK 830 ThermoMix® B. Without pump 1 artikel

Article Dim. DN Kvs m³/h Weight (kg) Item List
299965 M 1½" / F 1" x M 1" DN 25 6,3 3.1

299965

Dim. M 1½" / F 1" x M 1"
DN DN 25
Kvs m³/h 6,3
Weight (kg) 3.1
Item list

Detailed Information

Description

LK HydronicGroup is a complete pump group that is suitable for heating where direct supply or mixed supply is desirable. Consists of a highly efficient circulation pump, insulation, wall mounting bracket and two ball valves with thermometer, on the return side there is an integrated check valve.

LK 860 manifold available with or without hydraulic separator for one, two, three optionally four pump groups. Wall mounting bracket are included with the manifold.

LK 861 pump group where direct supply is desired.

LK 862 pump group where mixed supply is desired, a three-way mixing valve is included.

LK 863 pump group where mixed supply is desired, a thermic mixing valve is included. The LK 551 HydroMix has a thermostatic element that regulates the supply and return to achieve the desired supply temperature.

LK 864 pump group with a thermic loading valve LK 823 ThermoVar®. The pump group is intended to ensure both an optimal temperature stratification in the storge tank and high return temperature to the boiler, thus increasing the efficiency of the system.

LK 865 is a complete unit for hot water circulation. Consists of a mixing valve, cross, circulation pump, insulation, connection kit and three check valves. The LK 551 HydroMix mixing valve has a thermostatic element that regulates the supply of both cold and hot water to the desired temperature. The valve has an anti-scald function that closes for incoming hot water if the cold water supply ceases.

LK 866 is a pump group with a four way mixing valve, LK 841 ThermoMix®. The pumpgroup is designed for heating systems where a high return temperature is required to prevent corrosion and thus extend the life length of the heat source.

LK 867 is a pump group with a four way mixing valve, LK 830 ThermoMix® B. The pump group has a 4-way bivalent mixing valve that is designed for heating systems, where energy is taken from two heating units connected in series or parallel or for storage tank systems where energy is extracted from two levels. The pump group should be equipped with an automatic control unit to ensure that the most favourable heat source is prioritised at all times.

Technical Data

Voltage: 230 VAC 50/60 Hz
Power consumption: 10-75 W depending on pump speed
Max. working pressure: 1.0 MPa (10 bar)
Working temperature: Min. 5 °C/Max. 95 °C
Ambient temperature: Min. 5 °C/Max. 58 °C
Thread standard: Rp - female thread, G - male thread
Media 1: Water - Glycol mixture max. 50%
Circulating pumps: Wilo Para 15-130/8-75/SC-9, Wilo Para 25-180/6-43/SC-12, Wilo Para 25-180/8-75/SC-12, Wilo Para zKu 15-130/8 SC
Material, valve body: Brass EN 12165 CW617N
Material, insulation: Expanded Polypropylene EPP

Application

LK 862 - Pump group with mixing valve

LK 861 - Pump group with direct supply

LK 863 - Pump group with mixing valve
LK 551 HydroMix

LK 864 - Pump group with thermic loading valve
LK 823 ThermoVar®

LK 865 - Complete unit for hot water circulation

LK 861 Right - LK 861 Left

LK 866 - Pump group with a four way mixing valve,
LK 841 ThermoMix®

LK 867 - Shuntgrupp med en fyrvägs shuntventil,
LK 830 ThermoMix® B

Technical Diagrams

LK 861 - Pump characteristics

LK 862 - Pump characteristics

LK 863 - Pump characteristics

LK 864 - Pump characteristics

LK 865 - Pump characteristics

LK 866 & LK 867 - Pump characteristics

Documentation

Product sheet

LK HydronicGroup C/C 125

Brochure

Pump Groups_ENG

Instruction manual

861-863 HydronicGroup cc125 - Instruction_248184

Instruction manual

865 HydronicGroup cc125 - Instruction_248186

Instruction manual

864 HydronicGroup 125_864 - Instruction_248185

Instruction manual

866 HydronicGroup cc125 - Instruction_299747

Instruction manual

867 HydronicGroup cc125 - Instruction_299765

Applications

Biofuel ENG

Applications

Solar heating ENG

Applications

Water heating ENG

Applications

District heating ENG

Applications

Heat pump ENG

Instruction manual

248405_LK HydronicGroup 125_Cooling_861-862-Instruction

Accessories & Spare parts

Article no. Article Position
187203 Wilo PARA 25-180/8-75/SC 1
187322 Wilo PARA 25-180/6-43/SC 1
187227 Wilo PARA 15-130/8-75/SC-9 1
187323 Ballvalve, blue 2
187324 Ballvalve, red 2
187325 Bracket 3
187326 EPP Insulation 4
182767 LK 840 ThermoMix HG Kvs 10 5
181949 LK 840 Mixing Valve (866), Kvs 6.3 5
180588 LK 830 Mixing Valve (867), Kvs 6.3 5
182766 LK 840 ThermoMix HG Kvs 6,3 5
187188 Sealing kit LK 840/841 DN 25 6
187062 Repair kit 830, DN 15-20, Kvs 6.3 7
187195 Repair kit 841 2.0, DN 25 7
095349 Repair kit 551, 25 - 45 °C, Kvs 3.2-4.2 8
095350 Repair kit 551, 35 - 65 °C, Kvs 3.2-4.2 8
187330 Repair Kit 823R 9
182431 LK 551 (863), 25 - 45 °C 10
182389 LK 823R (864), 55 - 70 °C 11
182447 LK 823R (864), 45 - 60 °C 11

Videos

LK HydronicGroup C/C 125 - Function
LK HydronicGroup C/C 125 - 865 - Function
LK HydronicGroup C/C 125 - 866 - Function
LK HydronicGroup C/C 125 - 867 - Function
LK HydronicGroupC/C 125 - 864 - Function