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Topic Title: Height of room stats on a new build ?
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Created On: 19 February 2014 07:29 PM
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 19 February 2014 07:29 PM
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aligarjon

Posts: 2898
Joined: 09 September 2005

It used to be recomended to fit roomstats at 5ft for them to be most efficient. Does this still apply on a new build or should they be mounted at 1200mm with the light switches for ease of access. (i have 8 to fit for an underfloor heating system)

Thanks.


Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
 19 February 2014 07:38 PM
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OldSparky

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Joined: 28 June 2011

HI

i put mine the same height as the light switches, but i suppose it is down to personal choice
 19 February 2014 07:50 PM
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OMS

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Joined: 23 March 2004

Approved Document M actually says:

controls that need close vision are located between 1200mm and 1400mm above the floor so that readings may be taken by a person sitting or standing (with thermostats at the top of the range).

Regards

OMS

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 19 February 2014 08:09 PM
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typiod

Posts: 196
Joined: 09 February 2008

Depends what the manufacture instructions say, I think the honeywell wireless stat states 1500mm.
 19 February 2014 08:19 PM
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aligarjon

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Thanks guys.

Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
 24 February 2014 02:38 PM
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AJJewsbury

Posts: 11686
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From an efficiency point of view, I think height is a lot less critical with underfloor heating (rather than rads say) - as there's much less of a temperature gradient floor - ceiling. (Mine are going in at lightswitch height as "the client" is sensitive about boxes appearing higgledly-piggledly over the walls!)
- Andy.
 24 February 2014 05:13 PM
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rocknroll

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Whilst most wet UFH systems usually involve builders and plumbers, BC do recognise the manufacturers recommendations and reasons for a thermostat height of 1500mm for optimum performance, Building Regulation guidance documents are not set in stone and very much like your wiring regs often the manufacturers recommendations are considered seriously, yes we do have a conflict with Part M and recommendations for height but there are often conflicts with other standards and regulations that are addressed all the time.

regards

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"Take nothing but a picture,
leave nothing but footprints!"
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"Oh! The drama of it all."
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"You can throw all the philosophy you like at the problem, but at the end of the day it's just basic electrical theory!"
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 27 February 2014 07:08 PM
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TVRBryan

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Part M of Building Regulations apply to a new build, basically 1200mm (or lower) to the top FFL
 28 February 2014 05:59 AM
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adalinaabella

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I did not ever tried so, It's tough to say anything for me.

Thanks!
steelandsite
 28 February 2014 07:02 AM
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ebee

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I`ve never thought of this one so I`m glad the question was asked.

I`d say to Part M it should be 1200mm .
How critical is 5` to operating correctly?
Would a few inches/cm matter significantly?

Stats have a differential, they have tolerances on accuracy and depend largely on where in the scheme of airflow/change and may vary a lot according to all of these features.

(A bit like our test meters really).

So if a stat is deemed to be best at 5` under controlled laboratory
conditions then how significant would a change to say 4` or 6` be ?

Whilst, at worst, it might be adding yet another inaccuracy then conversely some inaccuracies could actually conspire to make our stat better not worse.

In use the stat is only a guide not an absolute (although some treat it as such). It should be set at whatever you feel comfortable with, not what folk tell you room temperature should be.

So, in conclusion, I think we should consider the Part M guidance more.
Opposing views would be welcomed though.

Whilst on the subject of heights and usability, why oh why do some installers mount an electric shower at a height that only giants can use? Aghhhh, it drives me mad!

-------------------------
Regards,
Ebee (M I S P N)

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 28 February 2014 11:16 AM
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hifly

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I was called to look at an underfloor heating system that was not working as expected, when checking the thermostat/controls i had to stand on a chair to read them properly, the unit had been designed to be viewed with a downward angle, if you were stood directly in front, it was mostly unreadable (lcd display) after checking the instructions they said to fit at 1200 above floor.

just like to add, i did not fit the system and half of it had no insulation below the mat, which is why half the floor was cold.

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Vince

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 28 February 2014 06:14 PM
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JZN

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Of course all this goes out of the window with wireless. The stats get left on tables, shelves, chairs, worktops at all sorts of heights.

John
 28 February 2014 08:06 PM
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aligarjon

Posts: 2898
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For what its worth i fitted them the same height as the light switches. for cosmetic reasons as much as anything so 1200mm. my thinking is the same as ebee, you adjust the stats until the room is a comfortable temperature, it doesn't really matter what the actual display says. Its not going to be far away anyway.

Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
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