Manual Ariston E-System One (page 12 of 80) (English)

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INSTALLATION

Gas Supply

The gas installation and tightness testing must be in accordance

with the requirements of BS6891. Ensure that the pipe size is

adequate for demand including other gas appliances on the

same supply.

Electrical Supply

The appliance requires an earthed 230V - 50 Hz supply and

must be in accordance with current I.E.E. regulations. It must

also be possible to be able to completely isolate the appliance

electrically. Connection should be via a 3 amp double pole

fused isolating switch with contact separation of at least 3mm

on both poles. Alternatively, a fused 3 amp, 3 pin plug and

unswitched socket may be used, provided it is not used in a

room containing a bath or shower. It should only supply the

appliance.

Water Supply

The boiler is suitable for sealed systems only. The maximum

working pressure for the appliance is 6 bar. All ttings and

pipework for the appliance should be of the same standard. If

there is a possibility of the incoming mains pressure exceeding 6

bar, particularly at night, then a suitable pressure limiting valve

must be tted.

The boiler is designed to provide hot water on demand to

multiple outlets within the property. If there is a requirement

for greater demands, for example if the boiler has several

bathrooms and cloakrooms, a vented or unvented hot water

storage system may be used.

Showers

Any shower valves used with the appliance should be of a

thermostatic or pressure balanced type. Refer to the shower

manufacturer for performance guidance and suitability.

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 (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 red before the

system has been thoroughly ushed; the ushing procedure

must be in line with BS 7593.

We highly recommend the use of a ushing detergent

appropriate for the metals used in the circuit.

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 efciency 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 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,

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-oor 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 specic

system water treatment.

Ariston suggests the installation of a magnetic lter on every

installation.

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 benecial to the efcient

operation of the system. The boiler connections for external

controls are 12V DC and so only controls of 12V DC that have

voltage free contacts should be used. (page 26).

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 proong may be required when installing

onto a stud partition wall). Provision must be made to allow

for the correct routing of the ue and siting of the terminal to

allow the safe and efcient removal of the ue products. A

compartment or cupboard may be used provided that it has

been built or modied 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 specically in accordance with current IEE Wiring

Regulations.

For unusual locations, special procedures may be necessary.

BS 6798 gives detailed guidance on this aspect.

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Ariston E-System One Manual

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