SHW and Wetback Tips and Advice

 
SHW and Wetback Tips and Advice

Roof Sensor Installation

It is vital a Roof sensor is mounted correctly for reliability;
  • Thermal transfer paste must be used on the sensor head
  • Silicon seal where the sensor cable exits the collector pocket
  • Firmly secure the sensor cable so it cannot move in high winds
  • Protect the cable against damage on roof/cladding transition

  • Inlet Sensor Installation

  • It is vital an Inlet sensor is mounted on the lower part of the cylinder - NEVER on the pipes, avoid poor hot water harvest
  • Thermal transfer paste must be used on the sensor head
  • Tank Sensor Installation

  • It is vital a Tank sensor is mounted on the upper part of the cylinder - NEVER on the pipes, avoid over heating of the cylinder and poor element control
  • Thermal transfer paste must be used on the sensor head

  • SHW and Wetback Tips and Advice

    Solar Loop Plumbing

    High temperatures and flow make or break a solar installation;
     Use a wider pipe (20mm) feeding a pump than exits (15mm)
     Install an air relief valve at the highest point in the loop
     Air/vapour in a solar loop is the usual reason for poor heating

    Wood-Burner Wetback

    Modern techniques can transform this option;
     Pumped is better than thermosiphon, which is an uncontrolled heat source
     Pumped allows for the cylinder to be remotely located from the fire
     For safety the piping to the wetback MUST be direct vented (no valves)
     The wetback heat exchanger will be at approx 6 metres water pressure

     
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