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Maintenance
4.2
Cleaning the syphon
Remove the syphon (fig. 54).
Clean the syphon with tapwater and a brush.
Fill the syphon with water and reassemble.
4.3
Flushing the hot water tank
Switch the boiler off by setting the mains switch to "0"
(see fig. 41, item 1).
Close the DHW (cold).
Open the DHW (hot) to relieve the pressure from the water
pipe.
Pull out the safety clips (fig. 55, item 1).
CAUTION
Hot water will come out.
Pull out the standby- and hot water sensor and place the
flushing connections in their place (see fig. 56).
Connect the descaling device and flush the hot water tank.
After flushing reconnect everything in reverse order.
Open the DHW (cold) cock.
Close the DHW (hot) cock after it has been purged and
flushed.
Take the boiler back in service by setting the mains switch
to "1" (see fig. 41, item 1).
ATTENTION
Check all couplings for leakage.
4.4
Sign maintenance report
Sign the maintenance report (see subsection 7.2: "Mainte-
nance report" on page 66).
Subject to modifications resulting from technical improvements!
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
fig. 54 Cleaning the syphon
1
1
fig. 55 Remove safety clips of sensors DHW cold and hot
fig. 56 Flushing the hot water tank
Boulter Buderus Ltd. • http://www.boulter-boilers.com
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