RE: Replacing and automating the Central Heating switch (PIC fixed)

["michael.furlong" <ukha@xxxxxxxxxxxxxxx>]

Cbus temperature sensors are available but to use them in any
meaningful wa=
y
you need a colour touchscreen (the PAC won=92t do it).

=20

In fact I am sitting here watching a light switch on/off when the
temperature rises/falls just a proof of concept for controlling a clients
underfloor heating but it does work. We already have the client=92s
underfl=
oor
heating manifolds controlled by CBUS and the whole thing will go live when
the heat pump is commissioned. Currently running of a oil burner to dry out
the house and switching the valves from the cbus relays but eventually it
will all be controlled by two colour touch screens.

=20

30 zones controlled by 20 interior temp sensors and 2 external=85.very
expensive to do but a very nice system.

=20

Warning=85colour touchscreens can damage your bank balance big time ;)

=20

Mick

=20

_____=20=20

From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Gareth Cook
Sent: 03 February 2006 11:29
To: ukha_d@xxxxxxx
Subject: Fw: [ukha_d] Replacing and automating the Central Heating switch
(PIC fixed)

=20

Additionally, I dont know of any temp sensor for Comfort or CBUS (for CBUS=
=20
it would need to pass a value to comfort)

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


----- Forwarded by Gareth Cook/UK/IBM on 03/02/2006 11:14 -----

Discussion
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ukha_d@xxxxxxx
Today 11:14

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Subject:
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Fw: [ukha_d] Replacing and automating the Central Heating switch (PIC=20
fixed)
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Category:



With a standard twin zone central heating, there's no value in me=20
automating the temperature control bit.

Unless I add automated valves on the rads themselves, then it would be=20
advantageous to have temp control per room.

With my method for now, I can then call up the house and turn the CH on=20
remotely. But thats all I can see that will add to the experience at the=20
moment - apart from getting rid of the timer in the utility room

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


----- Forwarded by Gareth Cook/UK/IBM on 03/02/2006 11:06 -----

Discussion
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ukha_d@xxxxxxx
Today 09:34

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Subject:
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RE: [ukha_d] Replacing and automating the Central Heating switch (PIC=20
fixed)
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Category:





>A solid state temp sensor for Comfort or CBUS would be nice - I'd
switch=20
>to that. But I dont have any pc's controlling anything and I'm not
going=20
>to start now :-) One of the reasons why 2005 has been a stable HA year
at=20
>Palm Lodge.

Gareth,

I agree with you regarding computer control, and prefer to keep my HA in
dedicated controllers. However I was very interested in Simon's post
recently about the heatmiser thermostats. These have 4 temperature/time
zones for mon-fri and 4 for the weekend. They can also be remotely
controlled via an rs485 link. My plan is to use the stat as a stand
alone boiler controller, then allow PC/comfort to vary the set point as
required. If the HA goes down for any reason, then the stat will simply
revert controlling the heating as per it's settings, and you loose any
additional HA features until the system is up again.

In theory it will work...

Iain