Heat Exchanger; Replacing - Buderus Logamax plus GB142-24 Installation And Servicing Instructions

14 Servicing

14.29 Heat exchanger; replacing

Disconnect the heating system from the power
supply, remove the main fuse or switch off the circuit
breaker.
Close the maintenance shut-off valves and drain the
Logamax plus GB142.
Set the main switch on the BC10 to "0" (Off).
Remove the casing.
Close the gas shut-off valve (see fig. 115, pos. 1).
Remove the cable plug from the gas control valve
(see fig. 116, pos. 1).
Remove both cable plugs from the fan unit
(see fig. 117, pos. 1).
We reserve the right to make any changes due to technical modifications!
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Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Fig. 115 Gas shut-off valve closed (1),
gas shut-off valve open (2)
Fig. 116 Replacing the gas control valve
(e.g. HONEYWELL gas control valve)
1
Fig. 117 Disconnecting the cable plug from the fan unit
Buderus Hydronic Systems • http://www.buderus.net
1