ESI ESRTD3 Istruzioni per l'utente - Pagina 5

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Room thermostats need a free flow of air to sense the

temperature, so they must not be covered by curtains or

blocked by furniture. Nearby electric fires, televisions, wall or

table lamps may prevent the thermostat from working properly.

Also keep out of direct sunlight

N.B. This thermostat has the option of standard setting or TPI.

Thermostat Display

This product has an internal non-replaceable rechargeable

battery to power the display when the system is between

heating cycles. To conserve power this will run for up to eight

hours and if the heating intervals are more than eight hours

apart, the display will "go to sleep" – although the thermostat

is still active. When mains power is restored, the battery

automatically recharges. This is a design feature to ensure

the delayed start thermostat clears its memory at the end of

every heating cycle.

A chronoproportional (or TPI) room thermostat makes boilers

operate more efficiently and provide close accurate control.

Chronoproportional control is a load compensator as it

ensures that the boiler 'ON' time is reduced to a minimum

and matches the boiler heat output with the heat loss. This

reduces the net temperature of the return water to the

boiler. This is due to the TPI (Time Proportional and Integral)

advanced energy saving feature.

Rather than just a simple ON/OFF control, like other domestic

room thermostats, room thermostats with TPI increases

boiler efficiency by firing the boiler at regular intervals,

adjusting firing duration with demand, to maintain set

room temperatures, giving them a great advantage over

other domestic room thermostats and achieving a constant