The HC60NG has been cycling my boiler for some time now and slowly driving me crazy, so why I didn't think of this solution before now is a mistery !
I've added a 'time delay' relay into the boiler control circuit. The relay coil is energised by the HC60NG when calling for heating, the relay contacts supply the boiler with 240v. The relay allows a variable time delay to be set between the coil energising and the contacts closing. I've used 10min as a delay time.
If the HC60NG is simply cycling (as it tends to do, a lot) then the relay will receive the 240v feed, but the boiler will only start if the 240v feed exists for more than 10mins (in my case). As a result the relay filters out the cycling request and only starts the boiler when the controls are making a more serious request for heat.
Boiler cycling has now completely stopped, the only very minor downside is that I have to wait 10mins before the boiler will start after a genuine request but this has actually not been noticed.
Hope this helps somebody out there...
I've added a 'time delay' relay into the boiler control circuit. The relay coil is energised by the HC60NG when calling for heating, the relay contacts supply the boiler with 240v. The relay allows a variable time delay to be set between the coil energising and the contacts closing. I've used 10min as a delay time.
If the HC60NG is simply cycling (as it tends to do, a lot) then the relay will receive the 240v feed, but the boiler will only start if the 240v feed exists for more than 10mins (in my case). As a result the relay filters out the cycling request and only starts the boiler when the controls are making a more serious request for heat.
Boiler cycling has now completely stopped, the only very minor downside is that I have to wait 10mins before the boiler will start after a genuine request but this has actually not been noticed.
Hope this helps somebody out there...
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