colmac Posted September 18, 2018 Report Share Posted September 18, 2018 Sort of as per the title. Have discovered a slight leak on one of the unions in the engine bay taking water to the calorifier. Question: if I take it off, replace the PTFE tape and do it up again, will I need to bleed the calorifier and, if so how do I do that ? Thank you. Link to comment Share on other sites More sharing options...
Sir Nibble Posted September 18, 2018 Report Share Posted September 18, 2018 Dunno, but I can't see the topic title with thinking "and fu**ing radiators!" 1 1 Link to comment Share on other sites More sharing options...
Ray T Posted September 18, 2018 Report Share Posted September 18, 2018 (edited) With ours open the hot bath tap as this closest to the calorifier and wait until the water runs at a steady pace. i.e. not accompanied with any air. Edited September 18, 2018 by Ray T Link to comment Share on other sites More sharing options...
Sea Dog Posted September 18, 2018 Report Share Posted September 18, 2018 10 minutes ago, Ray T said: With ours open the hot bath tap as this closest to the calorifier and wait until the water runs at a steady pace. i.e. not accompanied with any air. I suspect he's talking about engine coolant circuit going to the calorifier coil rather than the main tank contents of the hot fresh domestic supply itself which your method would bleed air from. If I'm correct in my assumption, I have a bleed valve in the high point of both the feed and return lines close to the calorifier for the purpose OP refers to, but I fitted them myself! They work a treat... but only if you have them. Link to comment Share on other sites More sharing options...
Scholar Gypsy Posted September 19, 2018 Report Share Posted September 19, 2018 It all depends - I have no bleed points on my coolant circuit, to the calorifier and to the skin tank - and have no problem with airlocks. The only bleed point is the pressure cap, which is the highest point. Link to comment Share on other sites More sharing options...
dor Posted September 20, 2018 Report Share Posted September 20, 2018 It's surprising how strong the flow is to the calorifier circuit, at least in my boats anyway. Never had the need to bleed the calorifier circuit. 1 Link to comment Share on other sites More sharing options...
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