lnstructions for Use
1. General lnformation.
VAREM fixed or interchangeable membrane expansion tanks and/or pressure tanks are manufactured with
respect to the essential safety requirements of the European Directive 2
0
14/6
8
/EU. These instruct io ns are
drawn up in compliance and in relation to article 3.4-attachment 1 to said Directive 2
0
14/6
8
/EU and are
attached to the p rod ucts.
2. Descrlptlon and product use.
Heating: the AQUAFILL expansion tank is necessary in order to absorb the volume increase of the water due
to its the rmal expansion caused by t he rise in temperature, therefore limiting the pressure increase in the
plant.
AQUAFILL pressure tank with membrane is a component necessary for long-lasting and regular operation of
the d rinking water distribution and pumping plants, constituting a reserve of pressurised water and
therefore limiting pump interventions.
Ali of the tanks and/or pressure tanks are designed for use wit h group 2 fluid s; any ot her type of fluid is not
accepted (unless declared specifically in writing by Varem Spa).
The AQUAFILL expansion tanks and pressure tanks are made up from a closed metal container fitted with
an interna! membrane. The AQUAFILL membranes have a balloon
-
l
i
k
e
conformation with attachment to the
flange, which prevents d irect contact of t he water with the metal sides of the tank.
3. Technical Features.
The technical features of the expansion tank and/or the pressure tanks are given on the plate applied to
each individua I product. The data shown is:
Code, Seriol N
°
., Oate oj manujacture, Capacity, Operoting
temperature (TS}, Pre
-
c
harge, MAX operating pressure {PS).
The tabel is applied to the VAREM expansion
tank and/or the pressure tank and must not be removed or its contents modified. The product must be
used in compliance with the technical features stated on the label by Varem Spa and the limits prescribed
cannot be violated for any reason.
4. lnstallation.
Correct dimensionlng of the tank with respect to its use;
an incorrectly dimensioned tank and/or pressure
tank can cause damage/injury to objects/persons. Dimensioning must be performed by specialised
technicians.
Correct installation performed
by
specialised technicians
in compliance with current national Standards,
respecting the prescribed tightening torque values of the fitting (fig. 1) and the assembly suggestions (fig.
2). ln the event of several tanks in series or parallel, they must be connected at the same height. lf tanks
with volumes over 12 I are mounted with fitting upwards, a suitable support is necessary (fig. 3); do not
install the tank cantilevered if it is not supported (fig. 4).
The heating tank must be installed in proximity of the boiler and connected to the return or backflow piping
(fig. 5)
The pressure tank must be positioned in pump flow (fig. 6).
