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421 Manifold Shunt

421 Manifold Shunt

Suitable for left-hand and right-hand mounting

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
Categories: ,

Technical Data

Voltage: 1 phase 230V AC, -15 %/+10 %, 50 Hz , PE
Power consumption: Max. 52 W
Max. working pressure: 0.6 MPa (6 bar)
Max. differential pressure: 0.1 MPa (1 bar)
Working temperature: Primary: Min. 5 °C/Max. 90 °C
Secondary: Min. 30 °C/Max. 65 °C
Ambient temperature: Max. 70 °C
Thread standard: Rp – female thread, G – male thread
Protection type: IP44
Media 1: Water – Glycol mixture max. 50% Ethanol mixture max. 30%
Circulating pumps: Grundfos UPM3 AUTO 15-70, EEI ≤ 0.23 (see pump datasheet/label for exact value)
Material, valve body: Nickel-plated Brass EN 12165 CW617N
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
Type approval certificate: Pump: CE, EC Low Voltage Directive (2006/95/EC) incl. additions

Documents


PDF
Products sheet

PDF
Certificate / Type approval

PDF
Instruction manual

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

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