Ariston microSYSTEM Installationsanleitung Handbuch - Seite 21

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4.5
C
A

OMBUSTION

F
. 4.2
IG
4.6
F
D
UME
ISCHARGE
M
ONITORING
In the boiler, it is possible to monitor the correct operation of
the flue exhaust/air intake, checking for a loss of general
pressure in the system. Through the use of a differential
manometer connected to the test points of the combustion
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 under
conditions of maximum thermal power in order for the boiler
to function properly and without interruption.
4.7
B
S
OILER
AFETY
NALYSIS
S
The boiler is fitted with the following devices (see section 4.2 for references).
YSTEMS
1 - I
2 - I
3 - O
4. A
5 - E
The flue connector has two apertures,
taken for the temperature of the combustion by-products
and of the combustion air, as well as of the concentrations
of O
and CO
2
To access these intakes it is necessary to unscrew the front
screw and remove the metal plate with sealing gasket.
To achieve the best test conditions, turn the central heating
adjustment knob "G" to the "max" position and remove the
electrical connection to the heating sensor (see section 6.).
This will allow the appliance to operate at the maximum
heating power.
F
:
GNITION
AILURE
This indicates ignition failure when a flame is not detected within 7
seconds of starting an ignition sequence. The L.E.D. "F" will illuminate
to signal the shutdown status.
The system can be reset by pressing and releasing the button "E" after
checking to make sure that the gas cock is open.
S
P
NSUFFICIENT
YSTEM
RESSURE
In the event of insufficient water pressure in the heating system, a
safety device will shutdown the boiler. Check the system pressure on
the pressure gauge "J" 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
ignite automatically.
:
VERHEATING
This control shuts off the boiler in the case where the primary circuit
reaches a temperature in excess of 105°C.
The red L.E.D. "F" will illuminate to signal this shutdown status.
The system can be reset by waiting a few minutes for the primary
exchanger to cool down and then by pressing and releasing the "E"
button.
-
:
NTI
FROST DEVICE
The boiler is equipped with a device that, in the event of the water
temperature going below 6°C, the burner ignites at the minimum power
until the boiler water reaches a temperature of 16°C.
This device operates only if the boiler is functioning perfectly and:
- the system pressure is sufficient;
- the boiler is powered electrically - L.E.D. "B" illuminated;
- the gas is turned on.
D
A
XHAUST
ISCHARGE
NOMALY
The boiler is fitted with safety devices, which in the event of defective
discharge of exhaust fumes, automatically interrupts the gas supply,
thereby shutting off the boiler.
The shutdown of the boiler is temporary and when the discharge state
of exhaust fumes has returned to normal, the boiler automatically turns
back on
21
, etc. .
2
:
S
:
HUTDOWN
readings can be
F
. 4.3
IG