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Guys, thanks for the feedback so far...the u/f loop is just connected like an additional radiator. The valve is on the flow and will be switched via a thermostat in the room served by the u/f heating - the stat is to control the temperature in this room only. I understood that it was "just" a...

Don't believe so - it's effectively like adding an additional radiator - well the system I have installed is!. The two way valve is effectively just like the on-off valve on a rad, the difference being it is motorised.

Hi, I need to wire in a two way valve to control underfloor heating added to my gas wet central heating. Valve is to be controlled by a standard thermostat. Two way valve is a Pegler TerrierTZV22 - can anyone advise how the valve is wired to the thermostat - will the valve just require a...

Thanks all for the feedback so far. The flats are all owned. Building managers say they have never had anything to do with the controlled access! Look forward to any further advice you can offer.

Sounds like either; Steam condensing in the duct or Rain being driven in via the external (wall mounted) vent. Probably the first one - keep the ducting length as short as possible, insulate it if possible. Check that the flaps on the external vent close against the prevailing wind.

Hi, I am trying to replace a faulty door entry handset, without success. My flat is one of 10 in the block. The handset micrphone is faulty, and the handset needs to be replaced. The system is over 10 years old; there are only two wires going to the old handset and the terminals to which...

Sorry il78, been working away for two days. New cu will be approx 2m from original position.

Thanks breezer - realistically how can this be done at the backboard supporting the old CU. Any suggestions welcome.

Apologies if this turns into a double posting! Can anyone advise if crimped connections need to be contained in an enclosure e.g. extending cables to allow relocation of cu? Thanks.