Combi Boiler requirements

This ELV looks good....however don't think I could bring myself to use bell wire to cable it....think maybe 2 core oval light would be a bit better.

 

Or 3 core light round....whatever is needed to line in peripheral controls.

 

I wouldn't dream of hardwiring a stat to a combi these days.
You can fit a digistat to most combis now. It is wireless and the sender can be mounted anywhere in the house or even not mounted at all and moved around the house.

 

Or 3 core light round....depending on the peripheral requisites.

 

> Why is Honeywell rubbish Sine?


It isn't!

'*****' is a term that the kids use for good stuff!


Yee showin yer age JP! :^O

 

Thats for sure Sine..what 8 yrs now out of that particular field..ELV controls....really did not know they exist (probably existed then, but I wasn't aware of). Funny how northern slang and southern slang is different..there are common demoninators in slang but not that many....gonna start using that phrase in the pub....like thats a good drop of sxxxx which equals thats a good drop of ale....or does it not work that way?

 

You have to install room stats to comply with part L. Even if the installation has TRV's installed.

Generally it's programmable roomstats which are normally installed for combis. Particulary if the combi is installed in the loft or similair and external controls are needed.

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=102632&ts=99153&id=39276

2 core is fine. If only 12v then bell wire is fine also. I always wire stats in HR flex for obvious reasons being terminated at the boiler. Sometimes right next to pipes so HR flex is recommended.

 

T6360B1028 Room Thermostat


Fitted one today........

 

Understand exactly what you mean now Sine....

 

I wouldn't dream of hardwiring a stat to a combi
these days.
You can fit a digistat to most combis now. It is
wireless and the sender can be mounted anywhere in
the house or even not mounted at all and moved around
the house.

Au contrair

 

Digistats..yes

 

2 core is fine. If only 12v then bell wire is fine
also. I always wire stats in HR flex for obvious
reasons being terminated at the boiler. Sometimes
right next to pipes so HR flex is recommended.

It's good and it is logical....far better to trip relays with a low voltage rather then high....presumably most of the relays are on the boiler PCB so instead of using the old style stats with large contacts (as a relay so to speak) etc the technology is veering quickly towards this ELV switching..sounds really good....and together with SELV shower units (Aquastream etc) the future for switching in these scenarios will be ELV and low voltage equipment in general....brilliant.

 

Wire all stats in 3core & E unless it is not feasible .
No matter what type . Use hardwiring if possible (not bell wire) you then have all options open .
Radio ,batts etc ,last resort in IMHO.

 

LD if these ELV units require just two wire cable and maybe in some cases 3 wire....on the presumption that an earth is not required on these ELV units....why cable with 3c + e?

 

LD if these ELV units require just two wire cable and
maybe in some cases 3 wire....on the presumption that
an earth is not required on these ELV units....why
cable with 3c + e?

See your point LD....why change anyway....best just keep to 3c+e and cover any eventualities....so my above post is retracted.

 

Wire all stats in 3core & E unless it is not feasible
.
No matter what type . Use hardwiring if possible (not
bell wire) you then have all options open .
Radio ,batts etc ,last resort in IMHO.


Agreed with ya there LD. But if the boiler is already installed and you know what is required, then I don't see the point in installing it in 3 core! The boiler will be in for a very long time so in this instance 3 core cable is pointless in only SELV contacats.

Agreed about using RF stats as a last resort. Fully furnished house nicely decorated with laminate flooring etc would be a good example. Or if the labour charges for hardwired outweigh the cost of RF stats.