Immergas MINI NIKE X 24 3 E, Instructions Manual

Page: 29 / 36

29
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.17 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
The following checks and maintenance should
be performed at least once a year.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Visually check the flue hood for deterioration
or corrosion.
- Check correct lighting and operation.
- Ensure correct calibration of the burner in
domestic water (when the boiler is connected
to an external cylinder) and heating phases.
- Check correct operation of control and
adjustment devices and in particular:
- intervention of main electrical switch
positioned outside of the boiler;
- system control thermostat intervention;
- domestic hot water control thermostat
intervention (when the boiler is connected to
an external cylinder)
.
- Check sealing efficiency of gas circuit and the
internal system.
- Check the intervention of the device against no
gas ionisation flame control. Intervention time
must be less than 10 seconds.
- Visually check for water leaks or oxidation
from/on connections.
- Visually check that the water safety drain valve
is not blocked.
- Check that, after discharging system pressure
and bringing it to zero (read on boiler
manometer), the expansion vessel charge is at
1.0 bar.
- Check that the system static pressure (with
system cold and after refilling the system by
means of the filling valve) is between 1 and 1.2
bar.
- Check visually that the safety and control
devices have not been tampered with and/or
shorted, in particular:
- temperature safety thermostat;
- water pressure switch,
- air pressure switch
- Check the condition and integrity of the
electrical system and in particular:
- electrical power cables must be inside the
fairleads;
- there must be no traces of blackening or
burning.
N.B.:
when performing periodical maintenance
of the appliance it is appropriate also to check and
perform maintenance on the heating system, in
compliance with that indicated by the regulations
in force.
3.18 VARIABLE HEAT OUTPUT.
Attention:
based on the boiler model (checking
which type of fan is installed), use appropriate
data.
N.B.: the pressures indicated in the table
represent the difference in existing pressures
between the gas valve outlet and the combustion
chamber. The adjustments should therefore,be
carried out using a differential manometer
(small "U"-shaped column or digital manometer)
with the probes inserted in the pressure test gas
valve outlet and on the sealed chamber positive
pressure test. The power data in the table has been
obtained with intake-exhaust pipe measuring 0.5
m in length. Gas flow rates refer to heating power
below a temperature of 15°C and at a pressure of
1013 mbar. Burner pressure values refer to use
of gas at 15°C.
3.19 COMBUSTION PARAMETERS.
FAN POWER: 30W
METHANE (G20) BUTANE (G30) PROPANE (G31)
HEAT
THERMAL
HEAT
THERMAL
CH
+
D.H.W.
GAS FLOW
RATE
BURNER
PRESS. NOZZLE
BURNER
GAS FLOW
RATE
BURNER
PRESS. NOZZLE
BURNER
GAS FLOW
RATE
BURNER
PRESS. NOZZLE
BURNER
(kW) (kcal/h) (m
3
/h) (mbar) (mm H
2
O) (kg/h) (mbar) (mm H
2
O) (kg/h) (mbar) (mm H
2
O)
24.0 20640 2.71 11.19 114.1 2.03 27.77 283.2 1.99 35.95 366.6
23.0 19780 2.60 10.39 106.0 1.94 25.32 258.2 1.91 33.35 340.1
22.5 19353 2.55 10.00 102.0 1.90 24.15 246.3 1.87 32.10 327.4
21.0 18060 2.39 8.88 90.6 1.78 20.82 212.3 1.75 28.47 290.3
20.0 17200 2.28 8.17 83.3 1.70 18.76 191.3 1.67 26.18 267.0
19.0 16340 2.17 7.48 76.3 1.62 16.82 171.6 1.59 23.98 244.6
18.0 15480 2.06 6.83 69.6 1.54 15.01 153.1 1.52 21.88 223.1
17.0 14620 1.96 6.20 63.2 1.46 13.32 135.8 1.44 19.86 202.5
16.0 13760 1.85 5.59 57.0 1.38 11.74 119.7 1.36 17.93 182.8
15.0 12900 1.74 5.01 51.1 1.30 10.29 104.9 1.28 16.09 164.1
14.0 12040 1.63 4.46 45.5 1.22 8.94 91.2 1.20 14.33 146.1
13.0 11180 1.52 3.93 40.1 1.14 7.72 78.7 1.12 12.66 129.1
12.0 10320 1.41 3.42 34.9 1.06 6.62 67.5 1.04 11.07 112.9
11.0 9460 1.30 2.94 30.0 0.97 5.63 57.4 0.96 9.57 97.6
10.0 8600 1.19 2.49 25.4 0.89 4.76 48.6 0.88 8.15 83.1
9.3 7998 1.11 2.18 22.3 0.83 4.23 43.1 0.82 7.20 73.4
8.0 6880
D.H.W.
0.97 1.65 16.8 0.72 3.40 34.7 0.71 5.56 56.7
7.2 6192 0.88 1.34 13.7 0.65 3.00 30.6 0.64 4.63 47.2
G20 G30 G31
Gas nozzle diameter mm 1.35 0.79 0.79
Supply pressure mbar (mm H
2
O) 20 (204) 29 (296) 37 (377)
Flue flow rate at nominal heat output kg/h 59 53 54
Flue flow rate at min heat output kg/h 61 59 52
CO
2
at Nom Q./Min. % 6.20 / 1.80 8.00 / 2.20 7.85 / 2.45
CO with 0% O
2
at Nom Q /Min. ppm 74 / 138 135 / 152 93 / 123
NO
X
with 0% O
2
at Nom Q /Min. mg/kWh 95 / 67 127 / 76 115 / 67
Flue temperature at nominal output °C 96 106 105
Flue temperature at minimum output °C 86 94 96
FAN POWER: 30W