Re: Can any electric genius pass their eyes over this please ? Thermostat Q

["Frank Mc Alinden" <frankmc@xxxxxxxxxxxxxxxx>]

Hi Gareth

> I figured I would have to use relays - but what do you make of the
18AWG
> cable tho for pilot wire use ??

If it works as i suspect then its fine......Can you check to see if there
is
a conventional relay or solid state relay located in the room stat....???
If
so the pilot wire only has to provide current for the relay coil
(mA).......

Frank


----- Original Message -----
From: "Gareth Cook" <g@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Thursday, March 09, 2006 7:22 PM
Subject: Fw: [ukha_d] Can any electric genius pass their eyes over this
please ? Thermostat Q


> Hi Frank - thanks.
>
> For the temp, because this UFH is slow to respond, you would prob just
> leave the temp. alone - and it's based upon the floor limit sensor
anyway.
>
> I figured I would have to use relays - but what do you make of the
18AWG
> cable tho for pilot wire use ??
>
> For the room thermostats, they have a 240vac feed, and a 240vac load -
> which goes to the mat. The pilot wire has it's own connection into the
> stat.
>
> G.
>
> Hi Gareth
>
> Ok had a quick read and to me it appears the pilot outputs are
240v....The
>
> specs on page 4 state
> Pilot wire Output...60mA per output / 230VCA......should be  (240VAC)
I
> think a misprint....
>
>
>> Im struggling to get to grips with exactly what load the
"pilot" wire
>> takes , which allows the TH134 to control multiple rooms. Handy
Heat say
>> 12v, but Im sure this manual says 240 but over 18AWG cable (isnt
CAT5
>> 22awg ??)
>
> Yes it appears to switch 240v .....BUT... you would need to confirm
this
> on
> the bench....
>
> Im guessing that each Room Thermostat that you mentioned has a 240v
relay
> which can switch the current to the floor mats (im assuming they are
> 240vac).......If they do have a 240v relay then the pilot wire would
> control
> the coil of the relay......I would NOT switch 240v using cat5
cable....
>
>> At the end of the day, I'd like to NOT have a TH134 and use either
> Comfort
>> or CBUS relays to do the timing portion. I'll leave temp reading
alone.
>
> So are you saying that the Intelligent thermostat can maintain the
temp
> but
> only if Comfort says it ok to turn ON....????...If so then you need to
> wire
> the pilot outputs via relay contacts controlled by comfort and then to
the
>
> room stats ......If this is the case then i would suggest using Omron
> relays
> i mentioned to John Benfield only you would require 12v coils...Bellow
is
> the part numbers for the bases and 240v coil version from RS
> Components.........
>
> single pole relay base   353-944
> single pole 240v relay   353-865
>
> double pole relay base  353-966
> double pole 240v relay 353-916
>
> HTH
> Frank
>
> ----- Original Message -----
> From: "Gareth Cook" <g@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Thursday, March 09, 2006 8:48 AM
> Subject: [ukha_d] Can any electric genius pass their eyes over this
please
> ?
> Thermostat Q
>
>
>> OK, I'm looking at the carbon heating mats for UFH, and Im trying
to
>> understand what I need to do.
>>
>> My understanding at the moment is I have a dumb
"thermostat" in each
> room
>> (in fact, it only has the floor limit thermostat in), and then you
have
> a
>> TH134 central controller.
>>
>> Im struggling to get to grips with exactly what load the
"pilot" wire
>> takes , which allows the TH134 to control multiple rooms. Handy
Heat say
>> 12v, but Im sure this manual says 240 but over 18AWG cable (isnt
CAT5
>> 22awg ??)
>>
>> At the end of the day, I'd like to NOT have a TH134 and use either
> Comfort
>> or CBUS relays to do the timing portion. I'll leave temp reading
alone.
>>
>> Heres the link to the TH134 -
>> http://www.aubetech.com/products/produitsDetails.php?noProduit=17
- The
>> PDF on that page is just 2 pages big.
>>
>> PDF Link
>> http://www.aubetech.com/manuel/2/TH134.pdf
>>
>> Thanks all !
>>
>> G.
>>
>> Gareth Cook
>> Tools and Process Architect
>> IBM SWG Sales - Lotus Park, Staines, TW18 3AG
>> Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
>> AIM Chat : TheBoyG - MSN Chat : chat@xxxxxxx
>> email: g@xxxxxxx
>>
>>
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