Ariston microGENUS HE 32 MFFI Technical Information Page 23
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23
3.2 INITIAL ST
ART
-UP
To access the areas in which adjustments are made, it is
necessary to open the control panel, as indicated in
SECTION 2.12, then remove the rear inspection cover by
unscrewing the two screws “A”. Access is thereby
provided to the P.C.B. and to the following components:
1. The power supply cable connector;
2. The fuses;
3. The soft-light potentiometer the setting for which can
r
ange from the minim
um ther
mal po
w
er to the
maximum;
4.
The maxim
um ther
mal heating po
wer potentiometer
adjustab
le b
y the minim
um to maxim
um po
w
er
(already calibrated in the factory to 70% of the
maxim
um thermal power);
5.
The jumper f
or adjusting the ignition dela
y (anti-
cycling) f
eature
, which can be set from 0 to 2 min
utes
(set in the factory at one minute);
6.
F
an/Pump Ov
er-r
un (Electrical Diagram). When the
jumper is set to position A the F
an and Pump o
v
er-r
un is
activated. (The jumper is factory set in position B)
7.
The time clock connector (see pae 20).
THE CHECKS TO BE RUN BEFORE INITIAL START-UP ARE AS
FOLLOWS:
1.
Make sure that:
-the screw on the automatic air valve has been
loosened when the system is full;
- If the water pressure in the system is below 1.5 bar,
bring it up to the appropriate level;
-Ensure that the gas cock is closed;
-Make sure that the electrical connection has been
made proper
ly and that the earth wire is connected to
an efficient earthing system;
- Supply power to the boiler by turning the On/Off knob
“A” (see FIG. 2.27) - “on” will appear on the display.
Turn the knob “C” to maximum and switch the time
clock to constant and turn up the room stat where
fitted.
After 7 seconds, the boiler will signal a shutdown due
to ignition failure. Leave the boiler as it is until all of
the air has been bled from the system.
-Loosen the cap on the head of the pump to eliminate
any air pockets;
-Repeat the procedure for bleeding the radiators of air;
-Open the hot water taps for a brief period;
-Check the system pressure and, if it has dropped,
open the filling loop again to bring the pressure back
up to 1.5 bar.
2. Make sure that all radiator valves are open;
3. Turn on the gas cock and check the seals on the
connections with an approved soap solution and
eliminate any leaks.
4. Press the reset button
“D” (see FIG. 2.28) the boiler
will re-attempt ignition. If the burner does not light the
first time, wait 1 minute and repeat the procedure.
5. Check the minimum and maximum burner pressure
values; adjust if necessary using the values indicated
in the tab
le in
SECTION 4 (
P
age 27)
.
3.3 OPERATIONAL
ADJUSTMENTS
1
2
3
4
5
6
1
2
3
4
5
6
E
C
II
D
1
2
3
4
5
6
1
2
3
4
5
6
E
C
I
I
A
C
A
A
FIG. 2.27
FIG. 2.28
- 1. GENERAL INFORMATION 3
- 1.1 GENERAL INSTRUCTIONS 3
- 1.2 OVERALL VIEW 4
- FIG. 1.0 4
- 2.1 REFERENCE ST 5
- 2.2 SITING THE APPLIANCE 5
- 2.5 MOUNTING THE APPLIANCE 6
- FIG. 2.2 6
- 2.4 CLEARANCES 6
- 2.3 OVERALL DIMENSIONS 6
- FIG. 2.1 6
- 2.6 ELECTRICAL CONNECTION 7
- FIG. 2.3 7
- 2.8 WATER CONNECTIONS 8
- 2.7 GAS CONNECTION 8
- FIG. 2.4 8
- 28/31 kW 9
- 2.9 FLUE CONNECTIONS 10
- FIG. 2.6 10
- FIG. 2.7 11
- RESTRICTOR 14
- EE TABLE 2.1 (PAGE 17) 14
- AIR INTAKE MUST NOT BE 16
- FITTED ABOVE THE EXHAUST 16
- TABLE 2.1 17
- DISPLAY CAUSE 18
- 2.10 CONTROL PANEL 18
- EMOVING THE FRONT PANEL 19
- OOM THERMOSTAT CONNECTION 19
- IG. 2.23 20
- 2.15 WATER CIRCUIT DIAGRAM 21
- 3.1 INITIAL PREPARATION 22
- 23
- 3.10 INSTRUCTING THE END USER 26
- 3.7 DRAINING THE SYSTEM 26
- 3.8 COMPLETION 26
- 3.9 OPERATIONAL CHECKS 26
- 4.1 CHANGING THE TYPE OF GAS 27
- ABLE A Page 27) 28
- ECTION 6.3.3) 29
- Burner pressure 31
- ECTION 3.4) and 32
- 5. MAINTENANCE 32
- 6.1 REPLA 33
- 6.2 TO GAIN GENERAL ACCESS 33
- IG. 6.15 36
- IG. 6.18 36
- IG. 6.21); 37
- IG. 6.22); 37
- IG. 6.23); 37
- 6.4 ACCESS TO THE GAS VALVE 38
- FIG. 6.38 40
- FIG. 6.39 40
- FIG. 6.40 40
- FIG. 6.37 40
- IG 6.45-FIG 6.46 41
- IG. 6.42) 41
- IG. 6.43) 41
- IG. 6.60-6.61) 44
- IG. 6.66); 45
- IG. 6.67-6.68) 45
- IG. 6.64) 45
- IG. 6.65); 45
- CCESS TO THE CONTROL SYSTEM 46
- FIG. 6.69 46
- FIG. 6.70 46
- FINDING GUIDE 49
- (FLOW-CHARTS) 49
- 8. EXPLODED VIEW 52
- CE Certification 54
- SERVICE INTERVAL RECORD 57
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