Central heating
- Thread starter Podooser
- Start date
Go for it !
Right here goes. I have an OSMA WAVIN UFH with a manifold that controls four zones downstairs. Upstairs is all radiators. The boiler is a Gloworm 30CXI. From the UFH wiring centre I have connected the zone actuators and the zone thermostats no probs. My question is where do I connect the thermostat that controls upstairs radiators(located in upstairs hall) and how does the boiler connect to the UFH.
Your UFH wiring centre should provide a switched live and/or voltage free contacts to call for the boiler to fire up. Thats the way the Speedfit/polypipe wiring centres work.
For the upstairs I believe that you will need to control a two port valve with the stat. When the valve opens you'd need to make this also start up the boiler and a (separate?) pump for the rads.
For the upstairs I believe that you will need to control a two port valve with the stat. When the valve opens you'd need to make this also start up the boiler and a (separate?) pump for the rads.
TaylorTC yes it has both. A "mains supply to boiler" and "voltage free to boiler" which should I use and how do they differ.
As far as upstairs goes how is the two port valved wired ie to where?
Just had a peek at the Wavin web site. It would seem that the UH1 and the UH1-M wiring centres can be used to control a radiator circuit as well as the underfloor heating to provide complete control of the heating system, not just the underfloor heating.
Not sure if you can split out one zone and use this to control the rads upstairs (?).
Not sure if you can split out one zone and use this to control the rads upstairs (?).
No available zone space.
I have a very similar problem, but an oil boiler. I have two programmers, one standard two channel one on the Worcester boiler and one 5 zone programmer UFH is wired to. This is essentially 6 zones (viewing the rads as a total zone). Do I ditch one programmer?
There is a room stat for the boiler as standard and terminals dedicated to the stat on the boiler control board.
Does using two programmers off different systems in one system work??
There is a room stat for the boiler as standard and terminals dedicated to the stat on the boiler control board.
Does using two programmers off different systems in one system work??
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This is Polyplumb's schematic of their wiring centre (page 3) , it links across from the UFH programmer to the boiler based on one or multiple zone valves.
http://www.ufch.com/uploaded_files/floor-heating-controls.pdf
http://www.ufch.com/uploaded_files/floor-heating-controls.pdf
With 2 port valve zoned systems it's very simple.
The two port valve acts as a relay. Brown and blue operate the valve once it has opened a microswitch is made which puts grey into contact with orange. So however many zones as you have you parallel up all the grey and orange leeds, and send them to the boiler and through the boiler the pump (for boilers with pump overrun circuitry) The beauty of it is it doesn't matter whether your boiler requires 230v 24v or volts free contact. Grey is connected to the Ls (send) contact and orange to Lr (return) or whatever your boiler manufacturer calls it, there is always two contacts with a jumper to be replaced by your grey and orange.
On the other side of the 2 port valve there is no back feed, it is completely isolated from grey and orange,
So each other circuit only has to control it's individual valve with time and temperature control,
The two port valve acts as a relay. Brown and blue operate the valve once it has opened a microswitch is made which puts grey into contact with orange. So however many zones as you have you parallel up all the grey and orange leeds, and send them to the boiler and through the boiler the pump (for boilers with pump overrun circuitry) The beauty of it is it doesn't matter whether your boiler requires 230v 24v or volts free contact. Grey is connected to the Ls (send) contact and orange to Lr (return) or whatever your boiler manufacturer calls it, there is always two contacts with a jumper to be replaced by your grey and orange.
On the other side of the 2 port valve there is no back feed, it is completely isolated from grey and orange,
So each other circuit only has to control it's individual valve with time and temperature control,
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