1
Horstmann CentaurPlus C21 and C27 two channel programmers offer up
to three on/off periods a day for hot water and heating with a hot water
boost and heating advance facility.
Installation and connection should only be carried out by
a suitably qualified person and in accordance with the current edition
of the IEE wiring regulations.
WARNING: Isolate mains supply before commencing installation.
CentaurPlus C21 & C27 Series 2
Installation Instructions
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