Quote:
Originally Posted by thenry
How did you know taf  he turned up with a DT4 thermostat in white. |
The DT4 is effectively an industry standard these days. Have fun reading the manual, and then ignoring 99% of it. This link is far easier to read than the insert in the box:
https://manuals.plus/honeywell/dt4-r...rmostat-manual