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28i RSF and Wireless Towerstat RF ( Selectable Volt Free )


 
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lucky1313

from United Kingdom

Joined: 28 Feb 2011
Posts: 17
Location: Blackpool,
United Kingdom

PostPosted: Mon Feb 28, 2011 10:30 am Reply with quote

28i RSF and Wireless Towerstat RF ( Selectable Volt Free )

Hi

I am trying to fit a Towerstat RF wireless thermostat to my old age boiler a 28i RSF, this is the old grey one with only a mechanical timer unit rather then any thermostat.

I have found a guide that mentions the CM907

http://www.diynot.com/forums/viewtopic.php?p=823347#823347

but i'm not sure what the equivelent AB connections are on the Towerstat

Can any help ?
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lucky1313

from United Kingdom

Joined: 28 Feb 2011
Posts: 17
Location: Blackpool,
United Kingdom

PostPosted: Mon Feb 28, 2011 10:53 am Reply with quote

Here is the wiring guide for the Towerstat RF, the cable layout is on page 10

http://www.grasslin-controls.co.uk/assets/graphics/static/STT%20RF.pdf

Many Thanks[/img]
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lucky1313

from United Kingdom

Joined: 28 Feb 2011
Posts: 17
Location: Blackpool,
United Kingdom

PostPosted: Mon Feb 28, 2011 11:34 am Reply with quote

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mikely

from United Kingdom

Joined: 11 Feb 2005
Posts: 305
Location: Lancashire,
United Kingdom
Thanked: 72 times

PostPosted: Tue Mar 01, 2011 9:06 am Reply with quote

Connect the Towerstat as per the volt free switching diagram on page 10 of the Towerstat manual (link wire removed). Connect ‘Live from load’ to boiler RL (X2 terminal block), ‘Switched live output’ to boiler RI. Also connect live and neutral to the Towerstat from CL and CN terminals.
See boiler installation manual Fig 12 and 13 here: http://www.worcester-bosch.co.uk/cache/file/160/installation-and-servicing-instructions-for-28i--discontinued-nov-05.pdf
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The following user says thank you to mikely for this useful post:
lucky1313 (1 Mar 2011)
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lucky1313

from United Kingdom

Joined: 28 Feb 2011
Posts: 17
Location: Blackpool,
United Kingdom

PostPosted: Tue Mar 01, 2011 9:18 am Reply with quote

that's excellent thanks and all sorted now icon_biggrin.gif icon_smile.gif
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