Checking The Hot-Water Temperature Sensor - Buderus Logamax plus GB142-24 Servicing Instructions

8.1.8 Replacing the supply/return/safety sensors
 Switch off the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "0" (Off).
 Remove the casing.
 Close the maintenance shut-off valves.
 Drain the Logamax plus GB142.
 Disconnect the plug and socket connection.
 Unscrew the sensor concerned and replace it by a new one.
Supply sensor see fig. 16, pos. 1.
Return sensor see fig. 16, pos. 2.
Safety sensor see fig. 17, pos. 1.
 Restore the plug and socket connection.
 Open the maintenance shut-off valves.
 Purge air from the boiler.
NOTICE
Fill and purge the Logamax plus GB142 as
required. See installation and maintenance instruc-
tions Logamax plus GB142-24/30/45/60.
 Fit the casing.
 Switch on the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "1" (On).
8.1.9

Checking the hot-water temperature sensor

 Switch off the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "0" (Off).
 Remove the casing.
 Disconnect the plug and socket connection of the cable for the
hot-water temperature sensor.
 Pull out the sensor and replace it by a new one.
 Restore the plug and socket connection.
 Fit the casing.
 Switch on the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "1" (On).
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
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2
fig. 16 Replacing the supply/return sensors
1
fig. 17 Replacing the safety sensor
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