I have 3 noisy TRVs as they are fitted on the return instead of the flow.
The instructions suggest this should be okay but they buzz as they close.
Rather than change ends (requiring 4 joints to be disturbed on each rad) is
there any disadvantage in rotating the valve to a horizontal plane - thus
putting the flow onto the 'base' of the valve?

In article 6,
DerbyBorn writes:
I have 3 noisy TRVs as they are fitted on the return instead of the flow.
The instructions suggest this should be okay but they buzz as they close.
Rather than change ends (requiring 4 joints to be disturbed on each rad) is
there any disadvantage in rotating the valve to a horizontal plane - thus
putting the flow onto the 'base' of the valve?

Should be fine.
Actually, it's a better mounting position for anyone who is going to
struggle to bend down to read the setting on the front - I recently
installed some in this position for an elderly relative for this
reason, so they can read the setting from above.

Make sure it's not sticking out somewhere where it's likely to get
knocked or walked into though.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

In article , Andrew Gabriel wrote:
In article 6,
DerbyBorn writes:
I have 3 noisy TRVs as they are fitted on the return instead of the flow.
The instructions suggest this should be okay but they buzz as they close.
Rather than change ends (requiring 4 joints to be disturbed on each rad) is
there any disadvantage in rotating the valve to a horizontal plane - thus
putting the flow onto the 'base' of the valve?

Should be fine.
Actually, it's a better mounting position for anyone who is going to
struggle to bend down to read the setting on the front - I recently
installed some in this position for an elderly relative for this
reason, so they can read the setting from above.

Some installation instructions also say it's a better position for the sensor:
http://danfoss-randall.co.uk/xxNewsx...8ab022edb.html

Noisy valves seem to be an issue a lot. a place where I go has one in a
studio, and this means it has to be shut off during recordings. We call it
Hissing Sid, well we are little children at heart...
Brian

--
From the Sofa of Brian Gaff Reply address is active
"Alan Braggins" wrote in message
...
In article , Andrew Gabriel wrote:
In article 6,
DerbyBorn writes:
I have 3 noisy TRVs as they are fitted on the return instead of the
flow.
The instructions suggest this should be okay but they buzz as they
close.
Rather than change ends (requiring 4 joints to be disturbed on each rad)
is
there any disadvantage in rotating the valve to a horizontal plane -
thus
putting the flow onto the 'base' of the valve?

Should be fine.
Actually, it's a better mounting position for anyone who is going to
struggle to bend down to read the setting on the front - I recently
installed some in this position for an elderly relative for this
reason, so they can read the setting from above.

Some installation instructions also say it's a better position for the
sensor:
http://danfoss-randall.co.uk/xxNewsx...8ab022edb.html

On 01/10/2012 09:14, DerbyBorn wrote:
I have 3 noisy TRVs as they are fitted on the return instead of the flow.
The instructions suggest this should be okay but they buzz as they close.
Rather than change ends (requiring 4 joints to be disturbed on each rad) is
there any disadvantage in rotating the valve to a horizontal plane - thus
putting the flow onto the 'base' of the valve?


Beware they can't be wacked by a vacuum cleaner being enthusiastically
wizzed around.

In article 6,
DerbyBorn writes:
I have 3 noisy TRVs as they are fitted on the return instead of the flow.
The instructions suggest this should be okay but they buzz as they close.
Rather than change ends (requiring 4 joints to be disturbed on each rad) is
there any disadvantage in rotating the valve to a horizontal plane - thus
putting the flow onto the 'base' of the valve?

Another thought - have the TRVs been fitted without ensuring the boiler
has a bypass route for when they all shut off?
Is there a radiator which doesn't have a TRV and can't be turned off
(lockshield at both ends)?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

?

Another thought - have the TRVs been fitted without ensuring the
boiler has a bypass route for when they all shut off?
Is there a radiator which doesn't have a TRV and can't be turned off
(lockshield at both ends)?


There is one rad with no TRV and whilst it doens;t have lockshields both
ends, it will not get turned off as it is the important hall radiator.

In article 6,
DerbyBorn writes:
?

Another thought - have the TRVs been fitted without ensuring the
boiler has a bypass route for when they all shut off?
Is there a radiator which doesn't have a TRV and can't be turned off
(lockshield at both ends)?


There is one rad with no TRV and whilst it doens;t have lockshields both
ends, it will not get turned off as it is the important hall radiator.

Is it a large radiator (which is likely to be set with a good flow
through it), or a tiny radiator which might have the lock shield
only open a crack (assuming the system has been balanced)?

When the TRVs start making a noise, I would try opening the hall
radiator's lockshield, and see if that stops it. Note exactly how
far you opened it, so you can set it back to where it was again.

When you have a radiator as the bypass loop, particularly a small
radiator, it may be that you have to increase the flow in it above
what is ideal for balancing, in order for it to cope with the flow
needed to maintain the bypass.

Is there a thermostat in the hall, to prevent the boiler firing
when the house is up to temperature?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On Mon, 1 Oct 2012, "DerbyBorn" writ:

?

Another thought - have the TRVs been fitted without ensuring the
boiler has a bypass route for when they all shut off?
Is there a radiator which doesn't have a TRV and can't be turned off
(lockshield at both ends)?


There is one rad with no TRV and whilst it doens;t have lockshields both
ends, it will not get turned off as it is the important hall radiator.

Where is the thermostat? Are there TRVs on the rads in the room with the
thermostat?
--
P

Percy wrote in :

On Mon, 1 Oct 2012, "DerbyBorn" writ:

?

Another thought - have the TRVs been fitted without ensuring the
boiler has a bypass route for when they all shut off?
Is there a radiator which doesn't have a TRV and can't be turned off
(lockshield at both ends)?


There is one rad with no TRV and whilst it doens;t have lockshields both
ends, it will not get turned off as it is the important hall radiator.

Where is the thermostat? Are there TRVs on the rads in the room with the
thermostat?

In the hall - across from the non-TRV radiator. Valves on the flow end are
quiet.
The noisy ones are in 2 bedrooms and these are usually the only ones to
normally close.

On Tue, 2 Oct 2012, "DerbyBorn" writ:

Percy wrote in :

On Mon, 1 Oct 2012, "DerbyBorn" writ:

?

Another thought - have the TRVs been fitted without ensuring the
boiler has a bypass route for when they all shut off?
Is there a radiator which doesn't have a TRV and can't be turned off
(lockshield at both ends)?


There is one rad with no TRV and whilst it doens;t have lockshields both
ends, it will not get turned off as it is the important hall radiator.

Where is the thermostat? Are there TRVs on the rads in the room with the
thermostat?

In the hall - across from the non-TRV radiator. Valves on the flow end are
quiet.
The noisy ones are in 2 bedrooms and these are usually the only ones to
normally close.

OK, I only asked because there should not be TRVs in the room with the
thermostat.
--
P