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5
Servicing
Install the new internal mechanism in reverse order.
Making sure that the flat side is facing down (see fig. 98).
Reconnect the servomotor to the three-way valve in
reverse order.
Fill and purge the system.
5.3.17 Replacing the terminal strip
Note order of cable terminals. Loosen all cables.
Connect the cables, in the right order, to the new terminal
strip.
5.3.18 Checking KIM connections
Disconnect the boiler from the mains power supply.
Remove the UBA 3 (see subsection 5.3.2).
Check if 4 pin connector (fig. 99, item 1) is fitted and
secure.
NOTE
This is not a serviceable part and any fault
identified with this component, contact Boulter
Buderus.
Subject to modifications resulting from technical improvements!
60
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
fig. 98 Internal mechanism of three-way valve
1
fig. 99 KIM connections
Boulter Buderus Ltd. • http://www.boulter-boilers.com
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