Boulter Buderus Benchmark 600-28C Installation And Servicing Instruction page 47

Servicing
5.3.2 Remove or replace the UBA
Disconnect the system from the mains power supply.
Loosen the screw (fig. 62, item 1) and remove the UBA
(fig. 62, item 2). When necessary install a new UBA and
secure by tightening the screw.
Connect system to mains power supply.
Subject to modifications resulting from technical improvements!
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
fig. 61 Measure cable resistance
fig. 62 Remove UBA 3
Boulter Buderus Ltd. • http://www.boulter-boilers.com
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