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LK 421 Manifold Shunt

LK 421 Manifold Shunt

  • Suitable for left-hand and right-hand mounting

LK 421 is to be used in systems with main pump in the primary circuit. Its capacity can be set at a flat rate of heating requirements of 50W/m² to max 200 m² of floor heating surface. The capacity is dependent ...

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LK 421 Manifold Shunt

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

Variants

LK 421 - Female thread / Male thread

LK 421 - Female thread / Male thread 1 artikel

Article Dim. Weight (kg) Item List
298559 F ¾” / M 1” 4.6

298559

Dim. F ¾” / M 1”
Weight (kg) 4.6
Item list

Dimension = Prim. / Sec. connection

Detailed Information

Description

LK 421 is to be used in systems with main pump in the primary circuit. Its capacity can be set at a flat rate of heating requirements of 50W/m² to max 200 m² of floor heating surface. The capacity is dependent on the primary temperature, pressure, floor heating installing system, etc. The included supply pipe allows in both left- and righthand assembly to LK 430 Manifold RF.
The shunt unit is a complete pre-manufactured unit.

Items Included:
• Circulation pump Grundfos UPM3 Auto 15-70 130, with automatic speed control, 1 phase 230 V AC 50 Hz, max 45 W, 0.38 A
• Two way control valve Kvs value 2.5, equipped with hand actuator
• VF valve
• Temperature limiter of feed temperature
• Adjustment valve for the primary circuit
• Check valve
• 2 tube thermometers
• Isolation valves for primary circuit
• Fixing bracket

Technical Data

Voltage: 1 phase 230V AC, -15 %/+10 %, 50 Hz , PE
Power consumption: Max. 52 W
Working temperature: Primary: Min. 5 °C/Max. 90 °C
Secondary: Min. 30 °C/Max. 65 °C
Ambient temperature: Max. 70 °C
Max. working pressure: 0.6 MPa (6 bar)
Max. differential pressure: 0.1 MPa (1 bar)
Media 1: Water - Glycol mixture max. 50% Ethanol mixture max. 30%
Thread standard: Rp - female thread, G - male thread
Circulating pumps: Grundfos UPM3 AUTO 15-70
Protection type: IP44
Material, valve body: Nickel-plated Brass EN 12165 CW617N
Other data: Max. valve capacity control valve V1: With hand actuator fitted. Kv 2.2
With electric valve actuator. Kvs 3.6
Control valve V2 Kvs 4.1
Approved pump CE, EC Low Voltage Directive (2006/95/EC) incl. additions

Application

Technical Diagrams

Pump Characteristics

Documentation

Product sheet

LK 421 Manifold Shunt

Instruction manual

421 Manifold shunt 2_0 - Instruction_296995

Accessories & Spare parts

Article no. Article Position
187172 Circulating pump Grundfos UPM3 Auto 15/70 1
095018 Thermometer T40, 0 - 80 °C 2
095221 Bracket 3