Servicing
5
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
47
Subject to modifications resulting from technical improvements!
Boulter Buderus Ltd. • http://www.boulter-boilers.com
5.3.2
Remove or replace the UBA
z
Disconnect the system from the mains power supply.
z
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.
z
Connect system to mains power supply.
fig. 61 Measure cable resistance
Pin
1
28 55
Pin
81
Pin
16
Pin
1
KIM
81 pin connector laagspanning
16 pin connector hoogspanning
fig. 62 Remove UBA 3