Good afternoon all,

Could someone help me with a problem I have with a bathroom radiator TRV?

The radiator works, gets hot, no problems but I don't think the TRV is
working correctly.
The TRV is fully open but the room temperature only stays around 16 degrees
centigrade, I'd have thought, with the valve on full, the room would have
been at least in the low 20's (it's only a small bathroom!).

The valve is a Landis & Gyr "Duogyr" (I think!).

I've popped off the cap and tapped the valve top to ensure it's not sticking
but in all honesty the valve "sort-of" works!!...just not as good as it's
supposed to I think!

Any ideas anyone?!, could I make further adjustments or is the valve
destined for the bin?!

Thanks ever so much for any advice,

Tony


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In an earlier contribution to this discussion,
Tony wrote:

Good afternoon all,

Could someone help me with a problem I have with a bathroom radiator
TRV?

The radiator works, gets hot, no problems but I don't think the TRV is
working correctly.
The TRV is fully open but the room temperature only stays around 16
degrees centigrade, I'd have thought, with the valve on full, the
room would have been at least in the low 20's (it's only a small
bathroom!).

The valve is a Landis & Gyr "Duogyr" (I think!).

I've popped off the cap and tapped the valve top to ensure it's not
sticking but in all honesty the valve "sort-of" works!!...just not as
good as it's supposed to I think!

Any ideas anyone?!, could I make further adjustments or is the valve
destined for the bin?!

Thanks ever so much for any advice,

Tony


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.799 / Virus Database: 543 - Release Date: 19/11/2004

Are you sure that the valve is on the correct side of the radiator, with
regard to flow and return? Unless it's a bi-directional valve, the water
*must* flow through in the correct direction. If the flow is reversed, it
could posibly explain your symptoms.
--
Cheers,
Set Square
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"Set Square" wrote in message
...
In an earlier contribution to this discussion,
Tony wrote:

Good afternoon all,

Could someone help me with a problem I have with a bathroom radiator
TRV?

The radiator works, gets hot, no problems but I don't think the TRV is
working correctly.
The TRV is fully open but the room temperature only stays around 16
degrees centigrade, I'd have thought, with the valve on full, the
room would have been at least in the low 20's (it's only a small
bathroom!).

The valve is a Landis & Gyr "Duogyr" (I think!).

I've popped off the cap and tapped the valve top to ensure it's not
sticking but in all honesty the valve "sort-of" works!!...just not as
good as it's supposed to I think!

Any ideas anyone?!, could I make further adjustments or is the valve
destined for the bin?!

Thanks ever so much for any advice,

Tony


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.799 / Virus Database: 543 - Release Date: 19/11/2004

Are you sure that the valve is on the correct side of the radiator, with
regard to flow and return? Unless it's a bi-directional valve, the water
*must* flow through in the correct direction. If the flow is reversed, it
could posibly explain your symptoms.
--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.



If the TRV is fitted the wrong way round the room simply gets hotter and
hotter... been there and cooked until I worked out what I had done.

Does your radiator get cooler as the room warms up or does it simply stay
hot all the time? If it stays hot all the time without the room getting any
warmer it probably doesn't have the capacity for the room requirements.

Is there a reasonable temperature drop across the rad?

Peter

The radiator works, gets hot, no problems but I don't think the TRV is
working correctly.

If the radiator gets hot, but the room doesn't, it doesn't suggest the TRV
is faulty.

It is more likely that the radiator is too small for the room, particularly
if it is well ventilated. Alternatively, the system needs balancing because
the radiator doesn't get hot enough.

Christian.

"Tony" wrote in message .uk...
Good afternoon all,

a problem I have with a bathroom radiator TRV?

Is the bathroom radiator connected to the circuit that heats the
stored hot water?

If so, is it gravity circulation or fully pumped to the hot water
storage cylinder?

TRVs won't work well with gravity ciculation, the gravity
differential pressure won't produce sufficient flow-rate due to the
TRVs resistance, causing problems as you describe. I think you can get
a special TRV for this application.

I posted this 24hours ago, but it seems to have got lost; apologies
if it gets duplicated.