Bleed The Gas Supply Pipe - Buderus Logamax plus GB142-24 Servicing Instructions

8 Actions
 Fit the cover on the external connection box (see fig. 54).
 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).

8.1.24 Bleed the gas supply pipe

 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 gas shut-off valve (see fig. 56, pos. 1).
 Open the screw plug on the testing nipple for the inlet gas pres-
sure and for purging (fig. 55) by two turns and install a hose.
 Open slowly the gas shut-off valve.
 Run the gas that flows out through a water bath.
 Close the gas shut-off valve when no more air escapes.
 Remove the hose and tighten the screw plug again.
 Carefully open the gas shut-off valve (see fig. 56, pos. 2).
 Check the testing nipple for leaks.
 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).
106 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
fig. 54 Installing the cover of the connection box
fig. 55 Bleeding the gas supply pipe