Boulter Buderus Benchmark 600 Series, Installation And Servicing Instruction

Page: 35 / 72

Maintenance 4
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004 35
Subject to modifications resulting from technical improvements! Boulter Buderus Ltd. • http://www.boulter-boilers.com
4.2 Cleaning the syphon
z
Remove the syphon (fig. 54).
z
Clean the syphon with tapwater and a brush.
z
Fill the syphon with water and reassemble.
4.3 Flushing the hot water tank
z
Switch the boiler off by setting the mains switch to "0"
(see fig. 41, item 1).
z
Close the DHW (cold).
z
Open the DHW (hot) to relieve the pressure from the water
pipe.
z
Pull out the safety clips (fig. 55, item 1).
z
Pull out the standby- and hot water sensor and place the
flushing connections in their place (see fig. 56).
z
Connect the descaling device and flush the hot water tank.
After flushing reconnect everything in reverse order.
z
Open the DHW (cold) cock.
z
Close the DHW (hot) cock after it has been purged and
flushed.
z
Take the boiler back in service by setting the mains switch
to "1" (see fig. 41, item 1).
4.4 Sign maintenance report
Sign the maintenance report (see subsection 7.2: "Mainte-
nance report" on page 66).
fig. 54 Cleaning the syphon
fig. 55 Remove safety clips of sensors DHW cold and hot
1
1
CAUTION
Hot water will come out.
fig. 56 Flushing the hot water tank
ATTENTION
Check all couplings for leakage.