Information about the appliance | 15
6 720 810 590 (2015/05)
Greenstar FS
Key to Fig. 9 Combi boiler KWB..-3A:
[T] Top of control board
[1] Code plug
[2] System supply temperature sensor
[3] Diagnostic interface
[4] ON/OFF switch
[5] Fuse T 6.3 A (120 VAC)
[6] Ignition transformer
[7] Boiler high limit dial
[8] High voltage - Installer connection box
[9] External heating pump
[10] 120 VAC connection
[11] Empty (future connectivity)
[12] LWCO - Low Water Cut Of
[13] Out Sen - Outdoor temperature sensor
[14] BUS - BUS connection to programmer
[15] Low voltage - Installer connection box
[16] Ignition electrode
[17] Boiler block temperature limiter
[18] Flow meter (turbine)
[19] 3 way valve (space heating/DHW heating)
[20] Flame rod electrode
[21] LLH/Supply temperature sensor
[22] Boiler circulator
[23] Additional supply temperature limiter
[24] Flue gas temperature limiter
[25] Fan
[26] DHW temperature sensor
[27] Gas valve
[28] DHW Setpoint Dial
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