First use
The pre-charge pressure should be checked and adjusted to suit the system parameters if
necessary before filling the vessel.
a. Open the bleed points (fig. 6, 7).
b. Fill the installation slowly until the fill pressure in the expansion vessel is 0.3 bar higher
than the pre-charge. Bleed the system during filling (fig. 8).
c. Bleed the pipe to the expansion vessel (fig. 8).
d. Close the bleed points (fig. 9).
e. Heat the system as high as possible for half a day and bleed regularly.
f. When the water temperature has fallen to approx. 50 °C, top up the installation to 0.5
bar above the pre-charge of the expansion vessel. Ensure that the filling hose is bled.
3. Maintenance and service
It is recommended that the expansion vessel is checked annually by approved personnel.
4. De-installation
1. Allow the installation to cool down and release the pressure from it.
2. Remove the cover cap (H) and the plug (I) (fig. 10, 11).
3. Push the inner valve (J) in to drain the pressure from the expansion vessel (fig. 12).
4. Unscrew the expansion vessel (A) (fig. 13).
Caution: a full expansion vessel is heavy!
The water in the expansion vessel may be hot.
Observe the local regulations when you dispose of the expansion vessel.
Flexcon C/K expansion vessels are pressure equipment, and conform to Pressure
Equipment Directive 97/23/EC.
A conformity declaration can be obtained from Flamco.
See also www.flamcogroup.com
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