How to take off this Danfoss Ras-C2 TRV?

[paul10590]

I know this is a danfoss ras-c2, pic attached, but how do I take it off? The reason why I want to is because it's not isolating the radiator. Have completely closed the lockshield valve but even with the TRV at 0 (past frost setting) it still lets radiator fill so I want to take TRV and check out the pin...

I've tried turning number 2 (see picture) clockwise with hand only and it doesn't budge??

 

[JonM]

There should be a little allen key bolt at the back just underneath the white head, on the bit you've labelled number 2!

 

[gasmarc]

are you serious an allen key to take a head off ,well you learn something new everyday lol

 

[paul10590]

I can feel "something" at the back of the part labelled number 2, but that's only with my finger. It's just enough room to fit a finger, gonna be fun with an allen key :/

 

[gasmarc]

sorry mate I have never seen a TRV that needs an allen key to take the head off but I will bow to your superior knowledge

 

[JonM]

Yea they usually give you a really small allen key in the box when you fit. Not something that you would keep! Maybe your local merchants might be able to 'borrow' one out of a box for you if you ask them nicely. Good luck!

 

[JonM]

sorry mate I have never seen a TRV that needs an allen key to take the head off but I will bow to your superior knowledge

My knowledge is far from superior! 🙂

 

[gasmarc]

I just downloaded this from their site and they dont show one in the picture ,
highly accurate temperature control.
Sensor mounting requires no tools, simply press
the sensor onto the valve body and hand tighten a
clamping ring to secure.

 

[JonM]

I'm just going from memory so I may be wrong. Pretty sure there is one tho!

 

[paul10590]

Just to say, you are 110% correct JonM. Had allen key set, tried various ones, 2nd to smallest worked great, came off a treat. Thankyou!!

 

[gasmarc]

well you maybe right but what a dumb idea how are you suppose to get to that if its tight against a wall ,get a mirror and check

 

[JonM]

Good stuff. Glad to be of help mate 🙂

 

[paul10590]

Agreed gasmarc, just marked my wall all behind it doing it as turning the allen key was completely against the wall...nevermind, off now!

 

[gasmarc]

happy days