Fitting
•
Expansion vessels with a capacity of between 12, 14 and 18 litres are installed either with
thewater nipple pointing down, or standing on the floor. (fig. 3)
Install the vessel in the return line, as close as possible to the boiler, on the intake side of the
pump. Install the vessel so
that the water it contains cannot circulate.
Put Teflon tape (C) (do not use hemp!) on the expansion vessel connection. (fig. 2)
1.
Screw the expansion vessel to the installation (T-piece or expansion pipe).
2.
First use
Fill the installation slowly until the fill pressure in the expansion vessel is 0.2 bar higher than
•
the pre-charge. Bleed the system during filling. (fig. 3)
•
Heat the system as high as possible for half a day and bleed regularly.
•
fWhen 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.
1.3. Maintenance and service
It is recommended that the expansion vessel is checked annually by approved personnel.
Expansion vessels are pressure equipment, and conform to Pressure Equipment Directive
2014/68/EU. A declaration of conformity is available from Aalberts hydronic flow control on
request.
1.4. De-installation
1.
Allow the installation to cool down and release the pressure from it.
Remove the plug (D). (fig. 4)
2.
Push the inner valve (E) in to drain the pressure from the expansion vessel. (fig. 5)
3.
Unscrew the expansion vessel. (fig. 6)
4.
Note: a full expansion vessel is heavy!
The water in the expansion vessel may be hot.
Observe local regulations when you dispose of the expansion vessel.
> Installation and operating instruction
Cubex R
7