Energy Efficiency recom-mends this product only when installed according to Government Good Practice Guide 302.CentaurPlus single channel time switches and two channel programmers are highly popular and very affordable with the latest Series 2 units now featuring an upgraded back lit display screen and incorporating an automatic GMT/BST clock. All models feature an industry standard six pin backplate which permits easy replacement/upgrade with the C11 and C17 controls being suited for use with combi boilers and the C27 and C21 versions for non combi installations where a hot water cylinder is in use.. 24 hour and 7 day options. Up to 3 ON/OFF's a day. Hot water boost and central heating advance. Programme options: ON, OFF, All day or Auto. Mains powered with battery back up. Standard wall plate - simple to plug in and replace CENTAURPLUSSERIES 2 Electronic time controlsHorstmann.Together, we're in control.

BS 5750 Part 1 ISO 9001 Q5646SPECIFICATIONCONTACT RATING3 (1) Amps 230V ACCONTACT TYPEMicro-disconnection changeoverVoltage free(C11 and C17 only)SUPPLY230V AC 50Hz onlyPolution Degree 2CLASS A SOFTWAREType 1 controlOPERATING TEMPERATURE RANGEO°C to +40°C BATTERY LIFE10 months continuous operation (minimum)CASE MATERIALThermoplastic, flame retardantDIMENSIONS84mm x 150mm x 29mm CLOCK12 hour AM/PMAuto BST/GMT changeoverDISPLAYBack lit liquid crystalDISPLAYED TIME ADJUSTMENTS1 minute stepsSWITCHED TIME ADJUSTMENTS10 minute stepsOPERATING PERIODS PER DAYC11 and C17 - 3 per dayC21 and C27 - 3 per day for CH and 3 per day for HWSeparate programmes possible for each day of the week (C17 and C27)OVERRIDEC11 and C17 - 1 hour boost, 1 hour extension to On period, instant advance.C21 and C27 - 1 hour boost (HW only), 1 hour extension to On period (HW only), instant advance (CH only)MOUNTINGIndustry standard 6 terminal plug in wall plateCENTAURPLUS C27Two channel 7 day control allowing independent time control of central heating and hot water.CENTAURPLUS C21 Simple, low cost 24 hour version of the C27.CENTAURPLUS C17Single channel, 7 day time control suitable for combi boiler applications, an extra heating zone or the pump on a solid fuel boiler.CENTAURPLUS C11Simple, low cost 24 hour version of the C17.CentaurPlus C27CentaurPlus C21CentaurPlus C17CentaurPlus C11Single ChannelTwo Channel24 Hour7 DayHorstmann.Together, we're in control.P84391 Issue 1Horstmann Controls Ltd, South Bristol Business Park, Roman Farm Road, Bristol BS4 1UP.Tel: 0117 978 8700 Fax: 0117 978 8701 E-mail: sales@horstmann.co.uk Web: www.horstmann.co.ukA division of Horstmann Group Ltd. Registered office: Secure House, Moorside Road, Winnall Trading Estate, Winchester, Hampshire SO23 7RX. Registered in England No. 457553©March 2009: Horstmann Group Ltd: All rights reserved. The company reserves the right to alter product specifications without notice.