Ariston 500 STD ProTech Istruzioni per l'installazione, la manutenzione e il funzionamento - Pagina 3

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GENERAL

INFORMATION

2.1

Guarantee

This manual is an integral and essential part of the product. It should be kept

with the appliance so that it can be consulted by the user and/or authorised

personnel.

Please read carefully the instructions and notices about the appliance

contained in this manual, as they provide important information regarding the

safe installation, use and maintenance of the cylinder.

Failure to do so may invalidate the guarantee.

When installing and servicing the cylinder, Ariston ThermoUK Ltd

recommend the use of protective clothing i.e. gloves.

The Ariston range of unvented cylinders come with Varying guarantees

depending on the model of cylinder. The guarantee periods offered with

each model of cylinder are as follows:

ST Range

Classico HE Range

Primo HE Range

10 Years tank

2 Years electrical components

5 Years tank

2 Years electrical components

25 Years tank

2 Years electrical components

Note: The guarantee is subject to the cylinder being installed and serviced

annually by a competent person as per the servicing instructions in Section

5.6 of this manual. For units with the ProTech anti-corrosion device it must

be ensured that this is connected and operating correctly (green LED only).

2.2

How THE Appliance

Works

The immersion heater(s) are controlled through a thermostat which senses

the water temperature. The operating temperature can be pre-set by

adjusting the spindle in the head of the thermostat. In addition to the

thermostat there is a thermal cut-out incorporated if the thermostat fails and

the water temperature rises too high. Once the cut-out operates it can only

be re-set manually after the fault has been rectified.

Indirect models have dual thermal controls. In addition to the above there is

a separate cylinder thermostat and thermal cut-out for controlling each

indirect circuit. Again the thermal cut-out operates if the cylinder thermostat

fails, by disconnecting the live feed (call for hot water) from the programmer.

ITI/ITD/ITSI models have a stainless steel tank and therefore need no

protection against corrosion.

STD/STI models have an enamelled steel tank and therefore are supplied

with magnesium anodes to prevent corrosion of the cylinder tank. It is

imperative that the top anode is checked during the annual service and if

found to be corroded both anodes should be replaced. Failure to do so

could invalidate the warranty of the tank.

i-.

The Wall-hung (ST) units utilise the ProTech anti-corrosion system

(electronic anode). This prevents an electrolytic reaction between the tank

and dissimilar metals. The ProTech system shows if it is operating correctly

(green LED) or incorrectly (red LED). In the event that the red LED lights

(even with the green light still showing), it is imperative that a service agent

is contacted immediately as continued use with the ProTech system in this

state could invalidate the warranty on the tiank.

The factory fitted temperature & pressure relief valve at the top of the

cylinder is a safety device to back-up the thermostat(s) and thermal cut-

out(s). It works by sensing an excess in water temperature or pressure and