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Vitoflex 300-UF Service & Maintenance
Cleaning
(continued)
Installing the displacement rods
Insert the displacement rods into the heat exchanger
tubes with the thick end first. Push until they are flush
with the edge of the tube. Tol/-
a
” (5 mm).
Remove the displacement rods with a pair of pliers, as
shown above. The heat exchanger should be cleaned
at the intervals prescribed so that performance and
efficiency are maintained and the displacement rods
can be easily removed.
Removing the displacement rods
RISK OF INJURY: Shut the system off before starting
any cleaning. Be absolutely sure to wear protective
gloves, protective eyewear if required and use the
cleaning tools that come with the system (danger of
blow-ups, burns and getting crushed)!
CAUTION
Heat exchanger tube displacement rods
The displacement rods improve the heat transmission in the heat exchanger tubes and reduce the temperature of
the exhaust gas, thus improving the efficiency of the heating system. They have to be taken out to clean the heat
exchanger tubes and put back in after cleaning.
Note:
Vitoflex 300-UF 390 and 530 do not have displacement
rods.
Maintenance