ENG
Installation and operating instruction
1. General
This manual is for Flexcon C/K expansion vessels
(A)
with a capacity of 2 to 1000 litres.
See the label
(B)
for the maximum working pressure and the pre-charge.
Application
Flexcon C/K 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. Min. / max. permissible temperature on the membrane is –10 °C /
70 °C. See the label for the maximum permissible working pressure. Refer to the Flamco
documentation to calculate the capacity and pre-charge.
Safety
The expansion vessel is shipped pre-charged. Damage may result in serious injuries. The
bracket must be able to carry the weight of a full expansion vessel. Prevent overpressure
in the installation. Install a safety valve (for example Prescor).
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 expansion vessel must not be closed
or isolated whilst the heating or cooling system is in operation.
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
•
Expansion vessels with a capacity of between 2 and 25 litres are installed suspended
from the water nipple
(E)
.
Use an MB 2, MB 3 wall bracket or Flexconsole (8 - 25 l), as appropriate (fig. 2).
•
Expansion vessels with a capacity of between 35 and 80 litres may be wall mounted
with the water nipple
(E)
pointing down, or floor standing. (fig. 3).
•
Expansion vessels with a capacity of between 100 and 1000 litres are floor standing.
(fig. 4)
Install the vessel in the return line, as close as possible to the boiler/chiller, on the intake
side of the pump.
1. Put PTFE tape
(G)
(do not use hemp!) on the expansion vessel connection (fig. 5).
2. Screw the expansion vessel to the installation (Flexconsole, T-piece or expansion pipe).
3. It is recommended to install the optional connection set in the expansion pipe for easy
maintenance.
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