In the event that the safety limit is exceeded for
the temperature of the w ater in the boilers
exchanger, the ther mostat shuts off the boiler
and the red LED
“I” illuminates.
To remedy this situation, w ait a few minutes to
allow the exchanger to cool do wn, then press
and release the reset button
“J”.
If this situation occurs frequently , contact a
local Service Agent.
4
In the ‘winter operating mode’, the boiler will
produce both Centr al Heating and Domestic
Hot Water. In the ‘summer operating mode’, the
boiler will produce only domestic hot water.
Press button
“F” to select winter mode . The
green LED
“G” will illuminate.
Winter and Summer Operating Modes
Adjusting the Heating
It is possib le to set the temper ature of the
heating system by adjusting the knob
“B”.
By positioning the indicator some
where
between MIN and MAX, a temper ature may
be obtained which v aries from approximately
42°C to about 82°C.
B
External (Room) Thermostat Control
If an external (room) ther mostat is installed, it is recommended
that the temperature of the heating system be set b y means of
the knob
“B”, leaving it at MAX position in order to obtain the
best performance from the boiler and to allo w the regulation of
the external temperature to function efficiently.
Setting the Hot Water for Domestic Use
Both in the winter and summer mode , the temper ature of the
domestic hot water may be adjusted by rotating the knob
“C”. A
delivery temperature for the w ater may be
selected between approx. 36°C to 54°C ,
depending on the flow rate of the water and
the position of the knob betw een MIN and
MAX settings.
N
OTE
: Should the Domestic
Hot Water not be hot enough, it may be
necessary to slow the flow rate from the
hot water outlet being used.
C
Turning Off the Central Heating
To turn off the Centr al Heating, press the Centr al
Heating button
“F”; the respective green LED “G”
will go off. The boiler will sta y in summer mode ,
only providing Domestic Hot Water
Turning Off the Boiler
To turn the boiler off , press the b utton
“A”; the
respective green LED
“K” will go off.
The boiler is equipped with saf ety devices that intervene in cer-
tain situations and shut it off. Most of these situations are commu-
nicated by means of the LED’s and at times the user may be able
to remedy them.
Shutdown Due To Ignition Failure
In the e vent that the automatic ignition of the
burner has f ailed, the red LED .
“I” will illumi-
nate. In order to reset the ignition, the b utton
“J” must be pressed and released. Should the
boiler fail to ignite a second time, check that the
external gas cock is open. If the problem per-
sists, contact a local Ser
vice Agent.
I
MPORTANT
!! Always wait 2 min utes before
resetting each time.
Shutdown Due To Overheating
Temporary Shutdown Due To Defective
Discharge of Exhaust Fumes
The boiler is fitted with saf ety devices, which in the e vent of a
defective discharge of exhaust products, automatically interrupts
the gas supply, thereby shutting off the boiler.
The shut-off of the boiler is tempor ary and is indicated b y the illumi-
nation of the yellow L.E.D.
“H” for a period of about 15 minutes.
Once this time per iod has passed and the discharge state of
exhaust system has retur ned to normal, the boiler automatically
turns back on.
I
MPORTANT
!
If this situation occurs frequently, contact a local Service Agent so
that they may check that the e xhaust fumes are being e xpelled
correctly, that the flue is installed correctly and that the area is
ventilated properly.
3. Boiler Shutdown Situations
G
F
G
F
K
A
I
J
I
J
Summary of Contents for INTESA TP23
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