Ariston INTESA TP23 Руководство пользователя, инструкции по установке и обслуживанию - Страница 5

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3. Boiler Shutdown Situations

Shutdown Due To Insufficient Circulation

f the boiler is off, one possible cause for this state is an insuffi-

cient pressure of water in the system.

Check the system pressure on the pressure

gauge "D" and if it is less than 0.5 bar, re-

pressurise the system as instructed by your

installer, should you be unsure some basic

instructions are provided hereafter;

Ensure that the filling loop hose is connected to the cold water

inlet pipe and to either the Central Heating flow or return

Open the handle/s or tap/s to allow water into the Central Heating

system

Once the needle on the pressure gauge reaches 1 Bar, close the

handle/s or tap/s and disconnect the filling loop hose

Should it still be unclear how to proceed, please consult your

installer.

If the boiler does not start up again, contact a local Service Agent.

If there are frequent drops in pressure within the system, have a

plumber check the heating system for possible water leaks.

Anti-frost Device

The boiler is fitted with a device which, in the event that the water

temperature falls below 8˚C the pump activates and runs until a

temperature of 18˚C is attained. In the event that the water tem-

perature falls below 3˚C, the diverter valve switches to Domestic

Hot Water and the burner fires and runs on minimum power until

a temperature of 33˚C is attained.

This device is only activated when the boiler is operating perfectly and

- the system pressure is sufficient;

- the boiler is powered electrically;

- gas is being distributed.

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

4. Time clock

Note: the time clock is for central heating control only.

The time clock is provided with 96 switches, called riders, each of

which covers a time interval of 15 minutes (four per hour).

When a rider is switched from the inside (off setting) to the out-

side of the clock border (on setting), the circuit is closed (switch

on) for a period of 15 minutes and then the boiler starts if the

room thermostat (if installed) or the heating thermostat require

heat (heating function on).

EXAMPLE

To set the heating of your home in the time interval from 7.00

am to 9.30 am and from 7.00 pm to 10.00 pm every day:

- rotate the outer ring of the clock in a clockwise direction until

the correct time of day (24h) lines up with the arrow on the

clock (at approx. 2 o'clock position);

- under no circumstances should the minute hand be

moved manually;

- make sure all the switches, i.e. the riders, are placed on the

inside of the clock border;

- pull outward the riders for 7.00 am and 9.30 am, and then all

riders between these two;

- repeat this for 7.00 pm and 10.00 pm.

Other heating intervals may be set in the same way.

The timer has approximately 150 hours of battery back up for

power failure.

The clock is provided with a selector switch with three positions

(see figure):

1. Position "I" CONSTANT: in this position, the

clock circuit is always closed (switch on), there-

fore the boiler will constantly be on and will only

shut off upon the request of the room thermo-

stat (if installed) or the heating thermostat;

2. Position "O" HEATING OFF: in this position, the

clock circuit is always open (switch off) and the

boiler will therefore never ignite for heating;

3. "Central" Position PROGRAMMING ACTIVE:

in this position, the programming set by the user

is active.

UT011Ap

UT014A