Adding a 2nd thermostat
The option of installing a zone valve, Is it a do it yourself project ? what are the cost estimates ?
[This message has been edited by rajsatya (edited November 21, 2000).]
If you want total control on a particular t-stat, you need a relay to enable yours when you want , thus dissabling the other stat and vise-versa when you switch the manual switch the other way. Is this what your are thinking?