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  1. E

    Can heat flow up the temperature gradient?

    I have not bought "my" boiler yet - can you suggest a boiler capable of dual temperatures that I can look up please? And do you think it is a good, worthwhile idea or just unnecessary.
  2. E

    Can heat flow up the temperature gradient?

    Sorry, I'm a bit dim - but what is not possible, to run it efficiently or to switch the temperatures and if you mean tempertures do you mean not possible at all even with some jiggery pokery or not possible without modification. The latter I will accept totally.
  3. E

    Can heat flow up the temperature gradient?

    Not sure about Maxwell's but I can well believe there is a demon in there :D Thank you all for your comments. It is a bit sad that a boiler supplier's technical helpline did not get this right. Knocks ones faith a bit. To explain slightly, my house is well insulated and if I work through...
  4. E

    Can heat flow up the temperature gradient?

    I am a newbie struggling to gain some understanding. On the front of a Worcester Bosch Regular boiler there is a temperature control knob that as I understand it, controls the temperature of the water flowing out of the boiler. So if I set that to 50C, then the water coming out of the boiler...
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