Ariston Unvented Hot Water Storage Cylinders manual System A, System B

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prevent risk to the appliance’s lifespan when disconnecting the protection system for an extended period of time, it is necessary to drain the appliance beforehand.

In addition to the 240V network, the electronic circuit is also connected to the tank, which is to be protected, and to the titanium protection electrode,

INFORMATION FOR THE END USER

Proper operation of the protection system is shown by a continuous green L.E.D, indicating that the circuits terminals are being supplied with electricity. In the event of failure, a red L.E.D. indicates that there is a short-circuit between the electrode and the cylinder tank, that one of the leads (tank or electrode) is disconnected or that there is no water in the cylinder.

Your appliance is thus properly protected when the green L.E.D. is illuminated and the red L.E.D. is off. Should this not be the case, please contact your installer.

FITTING IMMERSION HEATER(S) (100 - 300 litre foor standing only) These are supplied with but not fitted to 100 - 300 floor-standing models. A sealing gasket is supplied with each element, however the use of a suitable sealing compound is recommended￿ to ensure a correct seal. Care must be taken not to cross thread the immersion heater(s) when fitting. Each immersion heater is supplied with a regulation thermostat and manual reset thermal cut-out. This will activate if the regulation thermostat fails. Under no circumstances should this be by-passed. The immersion heaters supplied are rated at 3kW, there are 4kW upgrade kits available on request, (the part number for which is 925392). Should the immersion heater(s) be ugraded to the 4kW immersion, the electrical circuit and fuse must be checked to ensure suitability with the higher output. Although the immersion heaters are a standard 21/4” thread, they must not be substituted with anything but an original Ariston spare part.

NOTE!

THE IMMERSION HEATERS MUST NOT BE FITTED WITHOUT THE THERMOSTAT/THERMAL

CUT-OUT.

DIRECT SYSTEMS

A mains supply of 240V, 3kW (13 amps) is required. Heat resistant cable, round 3 or 4 core 2.5mm2 (to BS6141 table 8) must be used to connect the electrical supply through the Economy 7 time control switch using either system ‘A’ or ‘B’ as illustrated in FIG. 2.11.

SYSTEM A SYSTEM B

FIG. 2.11

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