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Horstmann CentaurPlus C21 (Series 2) 24-hour Programmer

Brand: Horstmann
HCO Code: 11A03
Price: £35.23
Ex VAT: £29.36
Stock: In Stock
Qty:  
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Q: Can it be used to replace a CentaurPlus C21 unit

A: Yes it can.
Q: How do I dwitch to Hot water only

A: Press the select button on the heating side several times until the indicator for the heating is on OFF.
Q: is the c21 wiring the same as the c27 timer?

A: Yes it is.
Q: Hi, Can this be used as an upgrade for a switchmaster 805 and does it clip/plug into the existing backblate of the switchmaster Thank you

A: It can be used but you will need to change the backplate.
Q: Can this be used as a direct replacement for a potterton mini minder e. ?

A: Yes it can.

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The C21 CentaurPlus two channel heating programmer offers 24 hour programming at an affordable price.

* Complete with new backplate
* Inexpensive and easy to install
* Gravity or Fully Pumped system setting
* Simple to use
* Part L Compliant
* 3 Amp rated
* GMT /BST automatic clock (New)
* Back lit display (New)
* Three ON and three OFF periods each day
* Hot water boost
* Central heating advance
* Mains powered with battery back-up
* Programme options On 24hrs OFF All Day or Auto
* Dimensions 84x150x29mm HxWxD

Replaces (same backplate and wiring for easy swapover):
Honeywell C21.
Newlec NLC21.

Compatible alternatives with same backplate & wiring:
Horstmann CentaurPlus C27 - 7 day version of C21

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Heating Controls Online is rated 4.91 stars by Reviews.co.uk based on 1580 merchant reviews

4.91 / 5 Rating
1580 Reviews
The Correct item sent in double-quick time (express delivery). Got the heating on again at last!
I needed to replace a Potterton EP3000 controller that was obsolete, for which Heating Controls website recommended an EP2. As the site ensured me that the fitting was as simple as unclicking the original and clicking in the new version and their price proved very competitive I placed an order. I received an immediate email acknowledgement and updates confirming the date and time on the delivery, and they maintained the promises they made. And as for the fitting, just 2 minutes and my boiler was back in service. I will certainly make use of Heating Controls again and recommended them in the future.
Simple purchase process, quick delivery.