The system is vented with a tank in the loft.
New bathroom (shower, basin, WC) going in - also in the loft – so going to be negative head pumping for all of those.
But, the bathroom is 16m of 22mm pipe away from the tank, so I’d have to run off a gallon every time, to get the first dribble of HW coming through.
How can I do a secondary return to get over this with an already pumped system. If I put in a secondary pump to get the HW to the taps, then it’s flow would kick the main pump into action? and that would then be driving the secondary pump. Then there’s got to be a way to stop the recirculation when enough HW has got to the taps.
Is there some way I could get the main pump to do the recirculation? Open the tap to get the main pump started, but the water can recirculate back to the tank until a temperature-controlled valve near the taps senses hot & closes off the return?
Would it work?
Do they make such things?
Is there a ‘proper’ way to do it?
New bathroom (shower, basin, WC) going in - also in the loft – so going to be negative head pumping for all of those.
But, the bathroom is 16m of 22mm pipe away from the tank, so I’d have to run off a gallon every time, to get the first dribble of HW coming through.
How can I do a secondary return to get over this with an already pumped system. If I put in a secondary pump to get the HW to the taps, then it’s flow would kick the main pump into action? and that would then be driving the secondary pump. Then there’s got to be a way to stop the recirculation when enough HW has got to the taps.
Is there some way I could get the main pump to do the recirculation? Open the tap to get the main pump started, but the water can recirculate back to the tank until a temperature-controlled valve near the taps senses hot & closes off the return?
Would it work?
Do they make such things?
Is there a ‘proper’ way to do it?