Accessories & Co

Back-end protection

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Accessories

Back-end protections (type RAG)

Back-end protections (type RAG) direct the warm water of the flow of a heating system into the return. This reduces the temperature difference between the warm flow and the cooled return, which protects the boiler and ensures low-maintenance heating operation. Hargassner provides automatic back-end protection for wood log, pellet and wood chip boilers. It is used to automatically raise the return flow of the boiler while simultaneously loading an accumulator tank.

Back-end protection type RAG

For Neo-HV 20–30, ­Smart-HV 17–23 & ­Classic Lambda 40–60

RAG30U.1

Neo-HV 20–30, Smart-HV 17–23 & Classic Lambda 40–60

Technology & scope of delivery:

  • Mixer LK 840.2, 3-way ET 1½”, kVs=15
  • Pump ALPHA 1 25/60, 130 mm ~230V, 50Hz
  • Centre-to-centre distance 125 mm
  • Length 290 mm (240 mm without ball valve 1″)
  • Actuator LK950, 140s/90°, actuating force 10 Nm, ~ 230V, 50Hz
  • 2x ball valves with a 1″ internal thread x 6/4″ union nut
  • Preassembled with insulation, incl. seals, Cu pipes

Back-end protection type RAG

For Neo-HV 40–60

RAG60U.1

Neo-HV 40–60

Technology & scope of delivery:

  • Mixer LK 840.2, 3-way T6/4″, kVs=15
  • Pump: Wilo Yonos Para HF 25/7 – 180 mm ~230V, 50Hz
  • Centre-to-centre distance 125 mm
  • Length 340 mm (290 mm without ball valve 5/4″)
  • Actuator LK950, 140s/90°, actuating force 10 Nm, ~ 230V, 50Hz
  • 2x ball valves with a 5/4″ internal thread x 6/4″ union nut
  • Preassembled with insulation, incl. seals, Cu pipes

Back-end protection type RAG

For Eco-HK 20–60 & ­Neo-MHV 30–40

RAG-ECO-A.2

Eco-HK 20–60 & Neo-MHV 30–40

Technology & scope of delivery:

  • Mixer LK 840.2, 3-way ET 1½”, kVs=15
  • High-efficiency pump ALPHA 1 25/60 180 mm ~ 230 V, 50 Hz
  • Actuator 140s/90°, 10 Nm ~230V, 50Hz

Back-end protection type RAG

For Eco-HK 20–60 & ­Neo-MHV 45

RAG-ECO-25.2

Eco-HK 20 – 60 & Neo-MHV 45

Technology & scope of delivery:

  • Mixer LK 840.2, 3-way ET 1½”, kVs=15
  • High-efficiency pump Wilo Yonos Para HF
    25/0.5-7 W180 mm ~ 230V, 50Hz
  • Actuator 140s/90°, 10 Nm ~230V, 50Hz

Back-end protection type RAG

For Eco-HK 70–120 & ­Eco-PK 70–120

RAG-ECO-32.2

Eco-HK 70–120 & Eco-PK 70–120

Technology & scope of delivery:

  • Mixer LK 840.2, 3-way ET 2″, kVs= 24
  • High-efficiency pump Wilo Yonos Para HF
    30/0.5-7 W180 mm ~ 230V, 50Hz
  • Actuator 140s/90°, 10 Nm ~230V, 50Hz
  • Compensating element IT 2″, 100 mm
  • Incl. ball valves