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Not a plumber.
I thought we should all be fitting the power saving Alpha2 type pumps?
https://uk.grundfos.com/products/find-product/alpha2l.html
The Grundfos guys on their stand at EcoBuild t'other year explained
the reduction in power consumption as trvs shut down soon pays off the difference in purchase price.
Really need to pay the overprice for Honeywell valves?
BES offer UK manufactured 2- & 3-way valves
https://www.bes.co.uk/motorised-zone-valve-2-port-22mm-17389
mespilus
We're in the process of having an extension built, which is getting underfloor heating within it. As part of the work, we've got the chance to separate the heating into 3 zones, upstairs Rads, downstairs Rads, and the underfloor area. We also have a hot water cylinder.
I've drawn a simplified diagram of what I think the layout will end up like here - https://pastebin.com/DNMzvuic
I'm fairly happy that I've got the boiler picked as an Intergas Compact HRE 40 SB.
Valves will be Honeywell V4043s.
And a Nest Thermostat to control each zone.
I've been looking at pumps to try and work out what would be needed there. I currently have a Grundfos UPS2 15-50/60 but don't know if this would be suitable for the new setup. Could someone advise on this? if not, which of the Grundfos pumps should I be looking at?