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Servicing
Reconnect the the servomotor to the three-way valve in
reverse order.
Check to see if the BC10 knobs are returned to the desired
settings.
5.3.15 Replacing the servomotor of the three-way valve.
Set DHW temperature knob to "0".
Disconnect the boiler from the mains power supply.
Remove the securing pin (see fig. 95, item 1) and remove
the servomotor.
Disconnect the plug (fig. 96, item 1) of the servomotor.
Install new servomotor in reverse order.
Check to see if the BC10 knobs are returned to the desired
settings.
5.3.16 Replacing the internal mechanism of the three-way
valve
Disconnect the system from the mains spower supply.
Drain the system.
Remove the securing pin (see fig. 95, item 1).
Remove the servomotor of the three-way valve.
Remove the internal mechanism of the three-way valve
(fig. 97).
CAUTION
Some remaining water may come out.
Subject to modifications resulting from technical improvements!
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
1
fig. 95 Remove securing pin
fig. 96 Disconnect plug
fig. 97 Remove the internal mechanism of three-way valve
Boulter Buderus Ltd. • http://www.boulter-boilers.com
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