(19)

(11)

EP 1 971 808 A2

(12)

(88) Date of publication A3: 17.01.2008 (43) Date of publication: 24.09.2008 Bulletin 2008/39 (21) Application number: 06850258.2 (22) Date of filing: 11.12.2006

(51) International Patent Classification (IPC):  F25B 41/04(2006.01) G05D 9/00(2006.01) F25B 49/02(2006.01) (86) International application number: PCT/US2006/061836 (87) International publication number: WO 2007/111731 (04.10.2007 Gazette 2007/40)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 30.12.2005 US 755222 P 06.07.2006 US 428913 (71) Applicant: Johnson Controls Technology Company Holland, MI 49423 (US)	(72) Inventors: CRANE, Curtis C. York, Pennsylvania 17402 (US) HILL, Frank H., IV. York, Pennsylvania 17404 (US) (74) Representative: Brosch, Oliver et al Kutzenberger & Wolff Theodor-Heuss-Ring 23 50668 Köln 50668 Köln (DE)