J
jashton
Hi. I have a quick Q re a 3-way diverter, based on Honeywell Y Plan.
I understand the various states the valve can be in and the control outputs.
The only one in question is:
If either CH or DHW (or both) have been on and are turned off then the grey connection becomes live, maintaining the last valve position and providing approx 100V to orange (pump plus boiler).
I'm assuming this is to provide power for overrun. I assume also that 100V is sufficient for the pump as you want to maintain some flow but not full flow as required when the syetem is on.
Assuming I'm correct, what triggers the overrun to stop after x minutes? ie the 100V to orange must be cut at some point or the pump will run constantly. Also, when this cut in power takes place is the grey supply cut also, triggering the valve to return to posn B under spring pressure?
Thanks
Edit. I'm just thinking that power to the pump is controlled via the boiler overrun stat. that would explain how the switching of the 100V is managed.
I assume then that grey remains live constantly while there's no DHW/H demand?
I understand the various states the valve can be in and the control outputs.
The only one in question is:
If either CH or DHW (or both) have been on and are turned off then the grey connection becomes live, maintaining the last valve position and providing approx 100V to orange (pump plus boiler).
I'm assuming this is to provide power for overrun. I assume also that 100V is sufficient for the pump as you want to maintain some flow but not full flow as required when the syetem is on.
Assuming I'm correct, what triggers the overrun to stop after x minutes? ie the 100V to orange must be cut at some point or the pump will run constantly. Also, when this cut in power takes place is the grey supply cut also, triggering the valve to return to posn B under spring pressure?
Thanks
Edit. I'm just thinking that power to the pump is controlled via the boiler overrun stat. that would explain how the switching of the 100V is managed.
I assume then that grey remains live constantly while there's no DHW/H demand?