My replies:
sounds great but I was think more of a system that can report status
(HV can report status - temperature of each
room,
occupancy of each room, wheter the rads/UFH is on or not etc.... it can
basically do whatever you want) and accept instructions from a
PC or other system, the idea being that it would operate as a stand alone
system with overrides from the home automation/security systems. (My 'philiosophy' for HA has been standalone yet integrated
systems - ie. having HV do the automation work, Comfort doing the security
and Futronix handling most of the lighting - all separate systems but can
talk to each other. For heating, however, I thought that HV would be
ideal mainly from the fact that the support for DS18S20s is so good, and
that it's fairly easy to program a 'clever' heating schedule) This would allow (for example) the heating to be set
back when the house alarm is in away mode and would give more
flexibility than one of the 'standard' systems with regards shedules and
remote operation. (Comfort tells HV that
we
are out and HV adjusts the schedule to suit)
There are two main reasons for retaining a system that will work
without interfacing to a HA system as I see it....first if the property is
sold just take out the interfaces and you have a bog standard UFH system
(if I sold our house then the heating system could be
easily downgraded to 'normal' control, but I think having an intelligent
heating system installed would be a good selling point!)
..second if the HA system is down the UFH will still operate
correctly although with limited functionality (Firstly,
HV is extremely reliable, and secondly I can override all valves manually
and still have a central heating system that is better than most standard
systems)
Mick - have you tried
Velta
UFH systems - they sell some sophisticated stuff - bit expensive
though.
Regards
Simon
Mick
Sort of my own!
System consists of 17mm PEX/AL/PEX pipe used as UFH in
screeded floors and same pipe to feed conventional radiators - all via
manifolds with each zone controlled via actuator valves. Each room
with DS18S20 sensors and occupancy PIRs linked to HV. Boiler and
distribution valves controlled via HV outputs and actuator valves
controlled via X10 relay board.
Downstairs I've fitted a 3 zone UFH manifold and an 8
zone distribution manifold - upstairs there's a 7 zone distribution
manifold.
Not got all the sensors fitted yet, but so far I'm happy
with the system.
Soon HV will control the heating dependant on time of
day/year, external temp, house occupancy/room occupancy, guest mode
etc... well that's the theory :o)
Regards
Simon
----- Original Message -----
Sent: 18 June 2002 11:53
Subject: RE: [ukha_d] Computer
Controlled Underfloor heating
Ah? Which system are you installing?
Regards,
Mark
I'm installing my own system at the moment
controlled via HomeVision.
Simon
----- Original Message -----
Sent: 18 June 2002 11:40
Subject: [ukha_d] Computer
Controlled Underfloor heating
has anyone come across an underfloor
heating system which can be controlled from a
PC?
Several of the ones I have found
have their own microprocessor control but no way to allow any
external control from your own devices.
Mick
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