Immergas MINI NIKE 3 E - Page 161

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3.17 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
e following checks and maintenance should
be performed at least once a year.
- Clean the ue side of the heat exchanger.
- Clean the main burner.
- Visually check the ue hood for deterioration
or corrosion.
- Check correct lighting and functioning.
- Check correct calibration of the burner in do-
mestic hot water and central heating phases.
- Check correct functioning of control and
adjustment devices and in particular:
- the intervention of main electrical switch
positioned outside of the boiler;
- system control thermostat intervention;
- domestic hot water control thermostat inter-
vention.
- Check sealing eciency of the gas circuit and
the internal system.
- Check the intervention of the device against no
gas ionisation ame 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, aer discharging system pressure
and bringing it to zero (read on boiler manom-
eter), the expansion vessel load is at 1.0 bar.
- Check that the system static pressure (with
system cold and aer relling the system by
means of the lling valve) is between 1 and
1.2bar.
- Visually check that the safety and control
devices have not been tampered with and/or
shorted, in particular:
- temperature safety thermostat;
- water pressure switch,
- ue exhaust control thermostat.
- Check the condition and integrity of the electri-
cal system and in particular:
- electrical power cables must be inside the
whipping;
- there must be no traces of blackening or
burning.
N.B.: on occasion of periodical maintenance of
the appliance it is appropriate also to check and
perform maintenance on the central heating
system, in compliance with that indicated by the
regulations in force.
N.B.: Gas ow rates refer to heating power be-
low a temperature of 15°C and at a pressure of
1013 mbar. Burner pressure values refer to use
of gas at 15°C.
3.18 VARIABLE HEAT OUTPUT.
METHANE (G20) BUTANE (G30) PROPANE (G31)
HEAT
OUTPUT
HEAT
OUTPUT
HEAT
+
DHW
BURNER GAS
FLOW RATE
PRESS. NOZZLES
PRESSURE
BURNER GAS
FLOW RATE
PRESS. NOZZLES
PRESSURE
BURNER GAS
FLOW RATE
PRESS. NOZZLES
PRESSURE
(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)
23.8 20468 2.77 13.50 137.7 2.07 27.70 282.5 2.03 35.70 364.0
23.0 19780 2.67 12.68 129.3 2.00 25.95 264.6 1.96 33.43 340.9
22.0 18920 2.56 11.69 119.2 1.91 23,86 243.3 1.88 30.74 313.4
21.6 18550 2.51 11.28 115.1 1.87 22.99 234.5 1.84 29.62 302.1
20.0 17200 2.33 9.86 100.6 1.74 20.00 204.0 1.71 25.76 262.7
19.0 16340 2.22 9.01 91.9 1.66 18.22 185.8 1.63 23.46 239.3
18.0 15480 2.11 8.21 83.7 1.57 16.54 168.7 1.55 21.29 217.1
17.0 14620 2.00 7.44 75.8 1.49 14.94 152.4 1.47 19.22 196.0
16.0 13760 1.89 6.70 68.4 1.41 13.43 137.0 1.38 17.27 176.1
15.0 12900 1.77 6.01 61.3 1.32 12.00 122.4 1.30 15.43 157.3
14.0 12040 1.66 5.35 54.5 1.24 10.65 108.6 1.22 13.68 139.5
13.0 11180 1.55 4.72 48.1 1.16 9.38 95.6 1.14 12.04 122.8
12.0 10320 1.44 4.12 42.0 1.08 8.18 83.4 1.06 10.50 107.0
11.0 9460 1.33 3.55 36.2 0.99 7.06 72.0 0.98 9.05 92.2
10.0 8600 1.22 3.02 30.8 0.91 6.01 61.3 0.89 7.69 78.4
9.5 8170 1.16 2.76 28.2 0.87 5.51 56.2 0.85 7.05 71.9
9.4 8084 1.15 2.71 27.7 0.86 5.41 55.2 0.85 6.92 70.6
7.0 6020 DHW 0.88 1.60 16.3 0.65 3.30 33.7 0.64 4.20 42.8