Two zone CH - Flow meter?

Two zone CH - Flow meter?

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dhutch

Original Poster:

4,323 posts

145 months

Monday 18th November
quotequote all
We have two (actually three, but one is only the bathroom) zones to our CH balanced soley with manual gate valves.

Does anyone know of a suitable inline flow-meter a bit that on the top of an underfloor heating manifold you could use to indicate the flow split?
Currently I have a pair of clip on dial type pipe thermometer which helps but obviously the response time on that is huge!


Cheers.

Daniel

dhutch

Original Poster:

4,323 posts

145 months

Tuesday 19th November
quotequote all
Anyone? Could I have used a two-port underfloor heating manifold? Or would the flowrate bet oo high.

jagnet

3,050 posts

150 months

Tuesday 19th November
quotequote all
On a one pipe system you'd start by balancing the zone loops with the gate valves, but they're not needed with a two pipe system. The system should be balanced using the lockshield valves on the radiators with all zone valves open.


dhutch

Original Poster:

4,323 posts

145 months

Tuesday 19th November
quotequote all
jagnet said:
On a one pipe system you'd start by balancing the zone loops with the gate valves, but they're not needed with a two pipe system. The system should be balanced using the lockshield valves on the radiators with all zone valves open.
Right ok. So you would just leave the 'zone valves' full open and balance each rad one at a time. Makes sense.

Theys system was one-pipe when we got the house and I had to balance that up last winter, but in the intervening its been replumbed into a two-pipe system including dropping the two ground floor zones and dropping the living rooms off the two first floor zones.

The system has around 20 rads and three towel rails, but also appears to work reasonable well already.


Daniel

jagnet

3,050 posts

150 months

Tuesday 19th November
quotequote all
That's it. If you have a gate valve for balancing the hot water cylinder then that'll need to be adjusted to suit but for the heating zones leave them open (or just a tiny smidge off fully open so there's less chance of them sticking in position).

dhutch

Original Poster:

4,323 posts

145 months

Tuesday 19th November
quotequote all
jagnet said:
That's it. If you have a gate valve for balancing the hot water cylinder then that'll need to be adjusted to suit but for the heating zones leave them open (or just a tiny smidge off fully open so there's less chance of them sticking in position).
Grand. System boiler, so no balance for HW.