CALEFFI

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Frequently Asked Questions

• What does a Caleffi inlet control group do?

  These CALEFFI inlet control groups are designed to control the pressure on the mains supply of an unvented hot water cylinder. Comprised of a pressure reducing valve, a pressure relief valve a check valve and filter all included in a single Monobloc valve.

• Why was the second Caleffi heating manual published?

  FOREWORD The publication of this second CALEFFI manual gives me the opportunity of thanking all those who, after the publication of the first Manual, have supported our initiative with their comments, advice and messages of encouragement. I must confess that the project has given me a great deal of pleasure even though it si not an easy one.

• Who is the chairman of Caleffi S.p.A?

  Franco CALEFFI Chairman of CALEFFI S.p.A. In this second manual I have rearranged and updated the text of my working files relating to heating circuits and heat emitters. In the section covering the circuits I felt it was desirable to highlight the numerical examples so that notes and observations of general interest could be drawn from them.

• Is the Caleffi TMV suitable for an instantaneous heater?

  Check that the adjustment spindle isn't wound out to the maximum setting to achieve a temperature setting above 50 degC. The CALEFFI TMV is suitable for instantaneous heaters, however, sometimes in ring mains served by instantaneous systems, the circulating temperatures fluctuate too much for the TMV to provide a stable temperature.

• Why was the second Caleffi heating manual published?

  FOREWORD The publication of this second CALEFFI manual gives me the opportunity of thanking all those who, after the publication of the first Manual, have supported our initiative with their comments, advice and messages of encouragement. I must confess that the project has given me a great deal of pleasure even though it si not an easy one.

• What are the design principles of a hydronic heating system?

  CIRCUITS WITH BALANCING VALVES pag. 38 CIRCUITS WITH AUTOFLOW pag. 48 CIRCUITS WITH THREEWAY CONTROL VALVES pag. 56 CIRCUITS WITH TWOWAY CONTROL VALVES pag.

• What do you need to know about Caleffi magazine?

  CALEFFI first began the educational publications in Europe. Since then, the publications have met with much success and the collection is frequently referenced by contractors and designers alike. Each issue will provide detailed technical discussion of the “best practices” available for deploying hydronic technology in the 21st century.

• Who is the chairman of Caleffi S.p.A?

  Franco CALEFFI Chairman of CALEFFI S.p.A. In this second manual I have rearranged and updated the text of my working files relating to heating circuits and heat emitters. In the section covering the circuits I felt it was desirable to highlight the numerical examples so that notes and observations of general interest could be drawn from them.