Ariston INTESA TP23, User Manual

Page: 26 / 52

26
Commissioning
In the boiler, it is possible to monitor the correct oper ation of the
flue exhaust/air intake, checking for a loss of general pressure in
the system. Through the use of a differential manometer connect-
ed to the test points of the comb ustion chamber, it is possible to
detect the P of operation of the air pressure switch.
The value detected should not be less than 0.55 mbar (TP 23) -
0.90 mbar (TP 30) under conditions of maxim um thermal power
in order for the boiler to function properly and without interruption.
The flue connector has two apertures, readings can be taken for the
temperature of the combustion by-products and of the comb ustion
air, as well as of the concentrations of O
2
and CO
2
, etc.
To access these intak es it is necessar y to unscre w the front
screw and remove the metal plate with sealing gask et.
It is possible to activate the flue test mode (maxim um output) by
pressing and holding the RESET b utton
“I” for 10 seconds, the
yellow L.E.D. “
H” will light. The boiler will return to normal opera-
tion after 5 minutes. The boiler can be retur ned to normal opera-
tion sooner by switching the boiler off and on again.
7.4 Combustion Analysis
7.5 Product of Combustion Discharge
Monitoring
FU008A
FU009A
The boiler is fitted with the following devices (see S
ECTION
6.10
for references).
1 - Ignition Failure:
This indicates ignition f ailure when a flame is not detected
within 7 seconds of starting an ignition sequence. The L.E.D.
“I” will illuminate to signal the shutdown status.
The system can be reset by pressing and releasing the but-
ton
“J” after checking to mak e sure that the gas coc k is
open.
2 - Insufficient System Pressure:
In the event of insufficient water pressure in the heating sys-
tem, a safety device will shutdown the boiler. Check the sys-
tem pressure on the pressure gauge
“D” and if it is less
than 0.4 bar refill the system to 1.5 bar . Once the system
pressure is at the correct level the boiler will reset automat-
ically.
3 - Overheating:
This control shuts off the boiler in the case where the pr i-
mary circuit reaches a temperature in excess of 105°C.
The red L.E.D.
“I” will illuminate to signal this shutdown sta-
tus.
The system can be reset b y waiting a few minutes for the
primary exchanger to cool do wn and then b y pressing and
releasing the “
J” button.
4. Anti-frost device:
The boiler is fitted with a de vice which, in the e vent that the
water temperature falls below 8°C the pump activ ates and
runs until a temperature of 18°C is attained. In the event that
the water temperature falls below 3°C, the div erter valve
switches to Domestic Hot Water and the b urner fires and
runs on minim um power until a temper ature 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 distr ibuted.
6. Exhaust Discharge Anomaly Shutdown:
The boiler is fitted with safety devices, which in the event of
defective discharge of exhaust products, automatically inter-
rupts the gas supply, thereby shutting off the boiler.
The shutdown of the boiler is temporary and is indicated by
the illumination of the yellow L.E.D.
“E” for a period of about
15 minutes.
Once this time period has passed and the discharge state of
exhaust fumes has retur ned to normal, the boiler automati-
cally turns back on.
7. Pump Protection:
To prevent the pump from seizing the boiler will activ ate the
pump for 20 seconds every 21 hours after it’s last operation.
7.6 Boiler Safety Systems