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Installation and User Instructions R02889-3 04/14
Page 13
Installation
4.5 Limitations
Due to the operating temperatures of
direct electric cylinders the water
hardness can considerably influence
the longevity of the immersion heater
element. Please consult local water
board for advice on maintenance
intervals.
5 Installation
5.1 Cold Water Inlet with
Inlet Control Group
5.1.1 Correctly Site the
Cylinder
Install the cylinder in an appropriate
location, ensuring all of the
recommendations have been
considered (see chapter 4.2).
5.1.2 Install the Inlet Group
The inlet group regulates the pressure
of the incoming mains water supply to
the cylinder and removes any debris
that might be water borne.
Note: Between the inlet group and
the cold water inlet on the
cylinder NO isolating device may
be fitted, as by doing so important
safety devices could be isolated!
5.1.3 Expansion Vessel
The expansion vessel is mandatory on
all Quantum cylinders and can be
connected directly to the cold water
inlet group, utilising the flexible hose
supplied with the vessel. The
expansion vessel should always be
fitted in accordance with the
manufacturer’s instructions. No
isolating device must be fitted
between the water cylinder and the
cold water inlet group.
Furthermore, it is recommended to
mount the vessel higher than the
cylinder to avoid having to drain the
cylinder when maintaining and
replacing the expansion vessel.
Figure 3: Connection of the Expansion
Vessel to the Inlet Group
It is important to check the
pre-charge pressure of the
expansion vessel membrane
before filling the cylinder. This
has been factory set to 3 bar.
The pre-charge should be
greater than or equal to 3bar.
Note: The expansion vessel must
be installed to the side of the
expansion relief valve on the inlet
group. To do this the blanking
plug must be removed and the
expansion vessel connected, as
shown in Figure 4.
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