OEG 26483 Instructions De Montage Et D'utilisation page 6

GB
I N S T A L L A T I O N A N D O P E R A T I N G I N S T R U C T I O N S
1. General
This manual is for expansion vessels with a capacity of 2 to 1000 litres. The package includes an expansion vessel (A)
with label (B), a manual (C) and an installation kit (D) (fig. 1). See the label for the maximum working pressure and the pre-charge.
can be obtained.
Application
Expansion vessels are intended solely for use in closed central heating and cooling systems (using additives based on up to
max. 50% glycol) with a maximum supply temperature of 120 °C. See the label for the maximum working pressure as well
as the min./max. temperature on the membrane.
Safety
The expansion vessel comes pre-charged. Damage may result in serious injuries. The bracket must be able to carry the
Set the opening pressure of the safety valve to a value that is equal to or lower than the maximum working pressure shown
on the label. The connection between the expansion vessel and the boiler must always be open.
2. Installation
The installation must be carried out by approved personnel only.
Observe local regulations and guidelines.
Flush the installation before installing the vessel (never via the safety valve) and check the installation by examining it for leaks.
Fitting
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.
2. Screw the expansion vessel to the installation (T-piece or expansion pipe).
First use
a. Open the bleed points. (fig. 6, 7)
b. Fill the installation slowly until the fill pressure in the expansion vessel is 0.2 bar higher than the pre-charge. Bleed the
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
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)
Observe the local regulations when you dispose of the expansion vessel.
down, or standing on the floor. (fig. 3)
expansion vessel. Ensure that the filling hose is bled.
Caution: a full expansion vessel is heavy!
The water in the expansion vessel may be hot.
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