Y Plan

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Yes I agree, but older systems may not and was just relating to a Y plan with these.

New systems I fit with vaillant combis and weather compensator/programmer/room thermostat plugged in boiler I dont though, as boiler has built in fully adjustable auto bypass and as room stat is on boiler you therefore have no room that needs a stat so fit all with trv's.
 
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namsag said:
Should always have one rad without trv

Which is controlled by the Room Stat .


We know that(old systems) , but the guy who thinks he`s a heating engineer don`t . On new Y plans and i fit an auto bypass , just in case they do that bit of decorating and the decorator removes the rad with no TRV .

Arf
 

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