IRC cistern flush

[Dave2010]

for a while at work i thought the units installed were connected to the mains. Until over last few days i noticed system didnt seem right. When checking i now know they are battery powered. So was thinking and checking up on net about putting them on mains instead to save messing about in future.

looking on net about unit, it mentions about connecting to mains through a SFCU and protecting with a 1A fuse. Would it be OK taking the supply from the local lighting circuit??

any ideas or anybody done this before?, cheers

 

[ricicle]

Although nothing technically wrong with the idea of feeding from the lighting circuit (subject to loading) the industry normally frowns upon feeding other equipment from such circuits (apart from tv amplifiers or extract fans and shavers)
Also you are more likely to come across a socket outlet circuit on a 30mA RCD than you are a lighting circuit in existing installations, and as such will find it easier to comply with the regulations regarding circuits in bathrooms, and circuits with buried cables.
Having said that I have fed my new high level LCD TV in the bedroom from the lighting circuit

EDIT:Just noticed that this looks like a commercial install so different kettle of fish really.

 

[Dave2010]

hey,

yeah it is an office block so sorry didnt mention that earlier

not really sure if there is any other supplies locally i could feed off.

 

[ricicle]

False ceilings ? That might make it possible to access plenty of other circuits.

 

[ban-all-sheds]

Curious to know what one was, I Googled IRC cistern flush.

Top of the list was this topic, but why did the search result look like this:

IRC cistern flush - DIYnot.com - DIY and Home Improvement
4 posts - 2 authors - Last post: 57 minutes ago
Posted: Thu Jun 10, 2010 7:03 pm Post Subject: IRC cistern flush .... How do you fit a flush
power socket into plasterboard? ...
www.diynot.com/forums/viewtopic.php?p=1641471... - 57 minutes ago

 

[Steve]

See here:

Right at the bottom

 

[ban-all-sheds]

Ah.

 

[Spark123]

I fitted a cistermiser not so long ago in a false ceiling, it just used 4 x AA batteries, lot easier than bothering with finding a permanent live from a lighting circuit!

 

[Lectrician]

They are VERY commonly run from the lighting circuits! It is usual to still include an FCU.

They use absolutely no power - as said, they can be battery powered.

Just a little history....

In the old days the cistern would fill slowly until full and then automatically flush, so flushing constantly 24/7 at inervals.

To save water they introduced a valve (forget the name) that would only fill the cistern when the taps in the sink ran (it reacted to a drop in pressure).

Unfortunately this was never ideal as it is shocking how many men do not wash their hands - the cisterns hardly flushed.

The new systems work with occupency sensors.

Cistermisors will allow the tank to fill while people are in the room.

The newer systems work with a PCB, and a solenoid directly on a water supply (no cistern).

They have a sensor directly infront of the urinal, often buried in the wall behind the tile or behind the wooden panel (microwave). They work by operating the solenoid valve a couple seconds after someone moves away from the urinal, based on a time interval too if the urinal is 'busy'.

 

[ban-all-sheds]

Funny how in the USA, which you'd expect to be the home of needless automation, they manage to get away with the blindingly simple idea of a manual flush for urinals.

 

[timtheenchanter]

just switch to waterless ones, much simpler...

 

[plugwash]

hmm, they tried those in some of the toilets at uni, the place stunk for ages and they eventually switched back to a convetional water based system.