Bedienungsanleitung Ariston Clas HE R (Seite 11 von 64) (Englisch)

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INSTALLATION

Flushing and Water Treatment

The boiler is equipped with a stainless steel heat exchanger.

The detailed recommendations for water treatment are given in BS

7593:2006 (Treatment of water in domestic hot water central heating

systems); the following notes are given for general guidance.

If the boiler is installed on an existing system, any unsuitable

additives must be removed.

Under no circumstances should the boiler be ﬁred before the system

has been thoroughly ﬂushed; the ﬂushing procedure must be in line

with BS 7593:2006.

We highly recommend the use of a ﬂushing detergent appropriate

for the metals used in the circuit. These include cleansers produced

by Fernox BetzDearbon, whose function is to disolve any foreign

matter that may be in the system.

In hard water areas or where large quantities of water are in the

system the treatment of water to prevent premature scaling of the

main exchanger is necessary.

The formation of scale heat compromises the eﬃciency of the

thermic exchanger because small areas of scale cause a high

increase of the temperature of the metallic walls and therefore add

to the thermal stress of the heat exchanger.

Demineralised water is more aggressive so in this situation it is

necessary to treat the water with an appropriate corrosion inhibitor.

Any treatment of water by additives in the system for frost protection

or for corrosion inhibition has to be absolutely suitable for all metals

used in the circuit.

The use of a corrosion inhibitor in the sysem such as Fernox MB-

1, BetzDearborn Sentinel X100 or Fernox System Inhibitor is

recommended to prevent corrosion (sludge) damaging the boiler

and system;

If anti-freeze substances are to be used in the system, check carefully

that they are compatible with the metals used in the circuit.

ARISTON suggests the use of suitable anti-freeze products such as

Fernox ALPHI 11, which will prevent rust and incrustation taking

place.

Periodically check the pH balance of the water/anti-freeze mixture

of the boiler circuit and replace it when the amount measured is out

of the range stipulated by the manufacturer (7 < pH < 8).

DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE

In under-ﬂoor systems, the use of plastic pipes without protection

against penetration of oxygen through the walls can cause corrosion

of the systems metal parts (metal piping, boiler etc), through the

formation of oxides and bacterial agents.

To prevent this problem it is necessary to use pipes with an “oxygen

proof barrier”, in accordance with standards DIN 4726/4729. If pipes

of this kind are not used, keep the system separate by installing

heat exchangers of those with a speciﬁc system water treatment.

IMPORTANT

Failure to carry out the water treatment procedure will invalidate

the appliance guarantee.

System Controls

The boiler is electrically controlled and is suitable for most modern

electronic time and temperature controls. The addition of such

external controls can be beneﬁcial to the eﬃcient operation of the

system.

The boiler connections for external controls are 240V. ARISTON

supply a range of wired and wireless system controls. Contact your

supplier for more details.

Location

The boiler can be installed on any suitable internal wall (suitable

sound prooﬁng may be required when installing onto a stud

partition wall). Provision must be made to allow for the correct

routing of the ﬂue and siting of the terminal to allow the safe and

eﬃcient removal of the ﬂue products. A compartment or cupboard

may be used provided that it has been built or modiﬁed for this

purpose. It is not necessary to provide permanent ventilation for

cooling purposes. Detailed recommendations are given in BS 5440

Part 2. If it is proposed that it is to be installed in a timber framed

building then reference should be made to IGEM Document, IGE/

UP/7 or advice sought from Gas Safe.

Where a room sealed appliance is installed in a room containing

a bath or shower, the appliance and any electrical switch or

appliance control, utilising mains electricity should be situated

speciﬁcally in accordance with current IEE Wiring Regulations.

For unusual locations, special procedures may be necessary. BS

6798 gives detailed guidance on this aspect.

Tundish

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