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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Bolier Control Wiring Query
Hi everyone!
I have a Danfoss Controller (FP715) connected to a Honeywell 3 way valve via the Danfoss wiring box. I installed it a while back, but it is only now the days have become warmer that I had spotted a problem. If I, via the programmer, turn the central heating on, the rads get hot. If I turn the CH and hot water on, the rads get hot and the water is heated. Now that the warmer days are here, I only wanted the hot water heater, with no central heating. Unfortunately both the hot water and central heating are switched on! This isn't really what I wanted to happen! I have read, and re-read, the FAQ on 3 port valves, and can only assume that I have wired it incorreclty. Can anyone else who has a honeywell 3 port valve please confirm what colour cable I should have where? I have my hot feed to AB, my CH is port A, the HW is port B (is the OK)? (As I am writing this, I think the ports should be the other way round?) The connections for the wiring box a Green Earth Blue Neutral White CH Call for heat Grey HW off Orange HW on (via the cyl sat) Does this sound correct? From the FAQ (which makes me think I have the valve the wrong way round). Green/Yellow Safety Earth Brown Not used. Orange Go fully to 'B' when live. Grey Live when at 'AB' or 'B' White Go to 'AB' or 'B'. If I have the valve the wrong way round, can I just swap the Grey and white connections over? Many thanks for your help, and apologies for my ramblings! Matthew |
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