Main Components - Bosch SSB255 Installation And Service Manual

2 .6

Main components

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Fig. 5 SSB512 (main components)
[1] Main power switch
[2] System return
[3] Removable display
[4] Flue exhaust
[5] Intake air
[6] Gas inlet
[7] System supply
[8] Pressure Relief Valve
[9] Tridicator
[10] Air pressure switch
[11] Heat exchanger supply pipe
[12] Max pressure switch [For SSB 512 Only]
[13] Min pressure switch [For SSB 512 only]. Location should be burner
side of gas valve.
[14] Automatic air vent
SSB
1 2 3 4 5 6 7 8
[15] Low water cut off probe
[16] High limit temp. safety switch
[17] Spark electrode
[18] Heat exchanger
[19] Condensate manifold
[20] Air pressure switch connection
[21] Low point drain valve
[22] Heat exchanger return pipe
[23] Return temperature probe
[24] Wiring Control Panel
[25] Main shut off gas valve
[26] Fan
[27] Gas pipe
[28] Gas valve
[29] Flue gas probe
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6720818454 (2016/02) US