30
ROUTINE YEARLY VERIFICATION OPERATIONS
COMPOnenT:
veRiFY:
CONTROL/INTERVENTION
MeTHOD:
An
(Anode in magnesium)
Anode is in good state of preser-
vation?
Empty the tank and remove ano-
de An (wrench 28 mm), verify the
integrity and efficiency, replace it if
is necessary.
VG
(Gas valve)
( 3 )
Does the valve modulate properly? Open a hot water tap at maximum
flow rate and then at minimum.
Make sure that the flame modu
-
lates.
SR (heating sensor)
( 11 )
SS (domestic hot water sensor)
( 41 )
Do the sensors maintain the origi-
nal characteristics?
12571 ohm at 20° C / 1762 ohm
at 70° C.
Measurement to be taken with the
wires disconnected (see table Res/
Temp)
.
E ACC/RIV. (ignition/detection
electrode)
( 4 )
Does the discharge of sparks be-
fore
putting the boiler in safe conditions
last less than 10 sec.?
Detach the electrode ionisation
wire and check the securing time.
TL (anti-overheating
limit thermostat)
( 10 )
Does the TL put the boiler in safety
conditions when overheating?
Heat the TL until it intervenes at
95°C and check that it intervenes
at 95°.
DK (safety pressure switch
against water deficiency)
( 13 )
Does the pressure switch block the
boiler if the water pressure is below
0.4 bar?
Without request: close the shut-off
valves of the heating circuit, open
the drain valve to make the water
pressure decrease. Before pres-
surising again, check the pressure
of the expansion vessel.
Expansion vessel
( 8 ) CH central Heating
( 42 ) DHw Domestic Hot water
only for IDEA AB 24
Does the vessel contain the right
amount of air?
Check the pressure:
(8) (1,0 bar when the boiler is
empty).
(42) (3,0 bar when the water tank is
empty).
Pressurise the boiler (open the
pump automatic vent valve). Open
the heating circuit closing valves.
Domestic hot water flow rate
Filter in cold water inlet
( 2 )
Clean the filter with limescale re
-
mover.
Heat exchanger body
( 9 )
Check that the space between the
rungs of the exchanger are not
clogged
Eliminate the deposits without
damaging the exchanger, using a
soft bristle brush and specific, non
flammable detergents.
Burner
( 5 )
Check the state of cleanliness of
the burner mesh
Remove deposits using a soft bris-
tle brush and blow on each single
ramp from the outside and from
the venturi.
( Num ) =
see key Par. 2.2
Summary of Contents for !DEA AB 24
Page 10: ...10 DEA AB 24 Vista dall alto Vista da sotto ...
Page 46: ...10 DEA AB 24 View from above View from below ...
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