Ariston NEXT SFT 14 Manuel de l'utilisateur - Page 15

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3.8.2. Installing the Water Heater

B. Hot water outler 1/2"

C. Gas inlet 3/4"

D. Cold water inlet1/2"

G. Drain valve

Cold water inlet ﬁ lter

The following elements are supplied with the heater :

1x 15 mm gas inlet isolation tap complete with washer

1x 15 mm x1/2" swivel nut 90° brass connector for the

hot water outlet complete with washer

1x 15 mm cold water inlet isolating valve complete

with washer for the cold water inlet

The dimensions for installing the appliance are detailed in

Sections 3.6 (page 13).

The device is equipped with a ﬁ lter "G", located on the cold

water inlet. Periodically clean the hydraulic system, if dirt is

present.

IMPORTANT!!

Do not activate the device without the ﬁ lter.

IMPORTANT!!

If the unit is installed in a hard water area (> 200 mg/l) it is

necessary to install a water softener to reduce the formation

of limescale in the heat exchanger.

The warranty does not cover damage caused by limescale.

IMPORTANT!!

As this appliance features a safety discharge valve rated at 8

bar,

the inlet water pressure must be limited to a maximum

of 6 bar, a pressure limiting valve must be ﬁ tted to prevent

excessive pressure on the appliance.

valve ever operate and it be found that a pressure limiting

valve is not ﬁ tted, Ariston will not be held liable for any

damage incurred.

Should the discharge

3.8.3 Siting the Appliance

The location chosen for the appliance must permit the

provision of a satisfactory ﬂ ue termination (see page 14,

Section 3.8.1). The location must also permit adequate space

for servicing and air circulation around the appliance (see

page 13, Section 3.7).

The appliance may be installed in any room or internal

space, although particular attention is drawn to the current

requirements of the current edition of BS7671, in Scotland,

the electrical provisions of the Building Standards applicable

in Scotland, and in Ireland in line with the electrical provisions

of I.S. 813, with respect to the installation of a heater in a room

or internal space containing a bath or shower.

Where a room sealed appliance is installed in a room containing

a bath or shower, any electrical switch or appliance control

using main electricity should be situated so that it cannot be

touched by a person using the bath or shower, in line with

current electrical regulations.

Where the installation of the appliance will be in an unusual

location, special procedures may be necessary, the current

edition of BS 5546 should be consulted.

In the event that the appliance is to be installed in a timber

framed building, it should be ﬁ tted in accordance with the

British Gas Document 'Guide for Gas Installations in Timber

Framed Housing' reference DM2. If in doubt, advice must be

sought from British Gas.

3.8.4 Gas Supply

An adequate sized gas meter must be connected to the service

pipe. Where necessary the local gas supplier will arrange for

the existing meter to be checked or for a suitable meter to be

ﬁ tted.

Installation pipes should be ﬁ tted in accordance with BS 6891.

Pipework from the meter must be of adequate size. Pipes of a

smaller size than the gas connection must not be used.

The complete installation must be tested for gas tightness

(see 4.5) and purged in accordance with the current edition

of BS 6891.

3.8.5 Air Supply

The appliance does not require any purpose provided

ventilation.

3.8.6 Electrical Supply

The appliance must be earthed.

The installation must be undertaken by a competent

electrician and should be in accordance with the current

edition of BS 7671.

Particular attention should be paid to cross bonding.

The appliance must be provided with a means of isolation.

If installed in a bathroom, the means of isolation must be

external to the bathroom or a double pole cord switch ﬁ tted.

Acceptable methods of connection are:

• A switched double pole fused spur with 3mm contact

separation on all poles.

• A double pole switch where the supply must be suitably

fused 3A.

• An unswitched socket outlet complying with BS 1363.

A three core cable should be used and a heat resistant cable of

0.75 mm2 (24 x 0.2 mm) is considered suitable.

3.8.7 Removing the Outer Case

Loosen the screw behind the appliance that secures the outer

case;

Release the two locks on the top of the casing and remove the

case (See 6.1.2., page 22).

3. installation