Immergas NIKE Mini 28 kW Special Manual De Instrucciones página 82

3.2 Nike Mini 28 kW Special series wiring diagram.
ES
PL
TR
RO
IE
Key
A5 - RFC interface card
B1 - Delivery probe
B4 - External probe (optional)
CAR - Remote Friend Control(optional)
CRD - Digital Remote Control (Optional)
E1 - Ignition plugs
E2 - Igniter sensor
Remote controls. the boiler is designed to use the Remote Friend Control
(RFC), or as an alternative to the Digital Remote Control (DRC) which
must be connected to clamps 42 and 43 of connector X9 for the RFC
(respecting polarity) and clamps 40 and41 of connector X9 for the DRC
on the circuit board and in both cases eliminating X40.
Environment thermostat (alternative to the DRC): the boiler is designed to
use the Room Thermostat(S20). Connect it to clamps 40 –41 eliminating
jumper X40.
Connector X12 (RS 232) is used for automatic inspection for connection
to the personal computer.
3.3 Troubleshooting.
N.B.: Maintenance must be carried out by a qualified technician (e.g.
Immergas Technical Assistance Service).
- Smell of gas. Caused by leakage from gas circuit pipelines. Check sealing
efficiency of gas intake circuit.
- Irregular combustion (red or yellow flame). This may be caused by: a
dirty burner, or blocked boiler lamellar pack,
intake-exhaust terminal is not installed correctly.
mentioned above and check the correct installation of the terminal.
- Frequent activation of the temperature overload thermostat. This may be
caused by lack of water in the boiler, insufficient water circulation in the
circuit, a blocked circulator or an anomaly of the boiler adjustment card.
Check via the pressure gauge that values are within admissible limits.
Check that radiator valves are not all closed.
- The boiler produces condensate This can be caused by obstructions of
the chimney or flues with height or section not proportioned to the
boiler. t can also be determined by functioning at boiler temperatures
that are excessively low. In this case, make the boiler run at higher
temperatures.
80
E4 - Safety thermostat
E6 - Fumes thermostat
F1 - Neutral fuse
F2 - Line fuse
M1 - Boiler circulating pump
M30 - V3-way valve
R5 - Domestic water temp. trimmer
- Frequent interventions of the chimney safety thermostat. This can be
- Presence of air in the system Check opening of the special air bleeding
- Ignition block see page 77.
or due to the fact that the
Clean the components
R6 - Heating temp. trimmer
R10 - Main selector switch
S4 - Domestic hot water flow meter
S8 - Gas type selector
S20 - Environment thermostat (optional)
T2 - Switch-on transformer
X40 - Environment thermostat jumper
Y1 - Gas valve
Y2 - Gas valve modulator
caused by obstructions in the fumes circuit. Check the flue. The flue
may be obstructed or by height or section not suitable for the boiler.
Ventilation may be insufficient (see room ventilation point). In this
case the boiler remains in standby for 30 minutes after which,it attempts
to re-start, to exclude the counter, remove the voltage by disconnecting
the electric power supply plug for a moment.
cap (see fig. page 75). Make sure the system pressure and expansion tank
pre-charge values are within the set limits; the pre-charge value for the
expansion tank must be 1.0 bar, and system pressure between 1 and 1.2
bar.