TRVs - horizontal angle direct or remote sensor?

Sky

Replacing vertical angle manual valves.
I'm told I can't use direct mount sensors on vertical angle valves because they will shut off too early.

The valves are down at floor level on 2 pipe system. They are all under windows. I really don't want the sensor poking out further from the radiator to get hit. But then I don't think I would like the look of the sensor mounted on the wall away from the radiator.

On conversions like this, what are others doing? Which do you prefer and if sensor, where do you mount it?

Steve D_2

I just went trought this

The Danfoss valves have heads which are easily replaceable. The valve body is another story. If you don't get results from one style sensor you should be able to swap it out easy enough. If you need to switch from side angle to a vertical angle valve you will need to drain your system. The tailpiece should be reusable in the same brand of valve (in the same series).

Mike T., Swampeast MO

"Side-mount angle" is the nomenclature used by Danfoss for valve bodies that keep the operator horizontal.

If the windows have good infiltration control there [shouldn't] be much problem using the self-contained operators. This provided that any window coverings are WELL AWAY from the operator!

That said, just a very few inches above the floor is not the best place to sense air temperature as it can be influenced by convective drafts--particularly when under almost any operable window.

The remote sensing units are small and unobtrusive. 12" to 28" above the floor is considered the ideal sensing zone.