Buderus Logamax plus GB142-24 Installation Instructions Manual page 6

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Product description
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Fig. 2 Basic Controller Logamatic BC10
[1] Main switch
1)
[2] DHW temperature knob
[3] LED "DHW status"
[4] Display
[5] Space heating water temperature knob
[6] LED "Heating system status"
[7] Under the cover a RC system controller can be installed
[8] LED "Burner Operation"
[9] Service Tool connector
[10] "Service" e button
[11] "Chimney sweep" d button
[12] "Reset" c button
[13] Air intake for the fan
1)
ECO mode means that the temperature inside the hot water tank is 140 °F
(60 °C), with a hysteresis (ΔT) of 18 °F (10 °C) instead of 9 °F (5 °C)
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Logamax plus GB142-24/30/45/60 – 6720820104 (2017/05)
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72150200-2.1TD