Re: Heater question

[Error323]

Hi everyone,

As I'm working towards a zoned heatingsystem I was looking at my heaters and tried fitting an ELV FHT8V-3. And I don't think it fits on this system. What would be the way to adapt it or what am I doing wrong here? Should I rip it further apart? I'm affraid of destroying the heater valves.

See attachments for the pictures. As they will say a 1000 words in this case.
Here are the images on imgur: http://imgur.com/a/X9bxu

1forum.jpg (100.42 KiB) Viewed 12101 times

[Bwired]

yes, this looks like very old!
Do you need to turn these around to get them open and closed
if Yes, then it will not work, you a version with a small pin which can be pushed down to control.

[Massi]

i think simply it's not a thermostatic valve..
afaik, all thermostatic valves has a "small pin" that has to be pushed or release to control valve aperture.
And MAX radiator thermostats work in that way.
Yes, you need to change the valve

[mvdarend]

You can get a cheap replacement (with thermostat) at your local DIY store for about 15-20 euros. (Just get a cheap one, you're not going to use the thermostat itself)

I replaced all my 'normal' taps for thermostats and it was really easy, you can probably re-use the two 'outside' fittings.

Here are the steps:

- Turn off the CV
- Find the lowest drainage point and drain the water.
- Unscrew the left fitting,
- Unscrew the right fitting
- Carefully take out the tap
- The new tap should fit in between the two original fittings, just tighten them back up on the new tap and it should be OK. Check for leaks!

[mvdarend]

hmmm, I can't edit my previous post because it's being moderated.

I forgot to add the last steps...

- Refill the system, remove any air
- And then check for leaks.

[pbrand]

Keep in mind that the ELV FHT8V-3 comes with some adapter rings and some adapter rings can be purchased separately.

You might want to check/ensure that the ELV supports the thermostatic valve you buy or that you are handy enough to make it fit.

That's the main reason why I installed Danfoss thermostatic valves. Not the cheapest ones but they are supported by ELV out of the box.