Ariston 47-116-33 Manuel de l'utilisateur, instructions d'installation et d'entretien - Page 11

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Installation

. 6.5

Drain Cocks:

These must be located in accessible positions to permit the drain-

ing of the whole system and should be fitted at all low points. The

taps must be at least 15mm nominal size and manufactured in

accordance with BS 2870:1980.

Safety Valve Discharge:

The discharge should terminate facing downward on the exterior

of the building in a position where discharging (possibly boiling

water & steam) will not create danger or nuisance, but in an eas-

ily visible position, and not cause damage to electrical compo-

nents and wiring.

The discharge must not be over an entrance or a window or any

other type of public access.

Air Release Points:

These must be fitted at all high points where air naturally collects

and must be sited to facilitate complete filling of the system.

The appliance has an integral sealed expansion vessel to accom-

modate the increase of water volume when the system is heated.

It can accept up to 6 litres (1.3 gal) of expansion water. If the

heating circuit has an unusually high water content, calculate the

total expansion and add an additional sealed expansion vessel

with adequate capacity. This should be located on the return pipe

work as close as possible to the pump inlet.

Mains Water Feed - Central Heating:

There must be no direct connection to the mains water supply

even through a non-return valve, without the approval of the Local

Water Authority, therefore a temporary method for initially filling

the system and replacing lost water during servicing in accor-

dance with current Water Regulations and bylaws must be provid-

ed (F

. 6.6).

. 6.6

Supplied By www.heating spares.co Tel. 0161 620 6677

Note: The installer should ensure that there are no leaks as fre-

quent filling of the heating system can lead to premature

scaling of the main exchanger and failure of hydraulic com-

ponents.

Domestic Water:

The domestic water must be in accordance with the relevant rec-

ommendation of BS 5546:1990. Copper tubing to BS EN

1057:1996 is recommended for water carrying pipe work and

must be used for pipe work carrying drinking water, a scale

reducer should also be used to reduce the risk of scale forming

in the domestic side of the heat exchanger.

ENTRAL

EATING

Detailed recommendations are given in BS 6798:1987 and BS

5449-1:1990, the following notes are given for general guidance.

Residual Head of the Boiler ∆ ∆ T=20

VR003A