Fw: Electric Heating Contactor Noise

[Gareth Cook <g@xxxxxxxxxx>]

I have 5 zones for the UFH - and I use 5 x 20A ChiNT contactors.

In the hager board, I cant hear them at all from outside of the garage
(where they are all mounted).

Mebe worth switching ?

G.

Gareth Cook
IT Architect / Project Manager, SWG Sales
IBM SWG Sales - Lotus Park, Staines, TW18 3AG
Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
email: g@xxxxxxx


----- Forwarded by Gareth Cook/UK/IBM on 21/01/2007 21:16 -----

Discussion
Main Topic

ukha_d@xxxxxxx
Today 16:19

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Subject:
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Re: [ukha_d] Electric Heating Contactor Noise
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Category:



Looks ideal if I get the 240V rated one.  The contactor is rated at 40A
so 100A should be fine.  Only question now is whether this can be fitted
as a contactor replacement?

Thanks for the suggestion,

Simon

Neil Fuller wrote:
>
> How about a solid state relay?
>
> You would need to check the full load current but assuming each of
your
> panels rated at 3kw, something like this should provide ample headroom
>
> http://tinyurl.com/3b5fnn <http://tinyurl.com/3b5fnn>
>
> I've never controlled this sort of load with an SSR before and there
may
> be issues with regs etc??? I'm sure others will chip in with the pros
> and cons later . . . .
>
> Cheers
>
> Neil
>
> Simon Ryley wrote:
> >
> > Hello everyone,
> >
> > I'm sure someone on the list must have had a similar problem.
> >
> > I've got a new build house with electric panel heating, not night
> > storage. The system is wired as a separate ring main for the five
panel
> > radiators, with each rad having its own thermostat, a
conventional
wall
> > stat in the lounge and a time clock in the fusebox upstairs.
> >
> > It works in a similar way to normal gas and water central
heating,
when
> > the time clock is in an on period, and the room temp in the
lounge is
> > below the stat setpoint the heating comes on. Lounge temp rises
above
> > stat setpoint, heating goes off.
> >
> > The problem is, there is a ruddy great contactor in the fuse box
to
> > switch the current to the radiators, and this makes a pretty loud
thump
> > whenever it switches. Its loud enough to sometimes wake us up in
the
> > morning when it first turns on. For some reason the heating also
short
> > cycles, so the contactor is usually switching every 5 minutes or
so,
so
> > the thumping does get rather annoying.
> >
> > I want to start doing a few clever things with the heating, but I
can't
> > until I can get the contactor noise reduced.
> >
> > Has anyone else has this problem and do they know of a way to
quieten
> > down the contactor? My suggestion to SWMBO of not using the
heating
> > didn't go down too well...
> >
> > Thanks,
> >
> > Simon
> >
> >
>
>








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