Immergas EOLO Star Manual De Instrucciones página 279

TECHNICIAN
- BOILER START-UP (PRELIMINARY CHECK)
To start up the boiler:
- make sure the declaration of conformity of installation is supplied with
the appliance;
- check the gas supply circuit tightness with the shut-off valves closed and
subsequently open with gas valve closed; no gas flow must be indicated
on the meter for 10 minutes;
- make sure the type of gas used corresponds to that for which the boiler
is arranged;
- check connection to a 230V-50Hz power mains, correct L-N polarity
and the earthing connection;
- make sure the heating system is filled with water and that the manometer
indicates a pressure of 1 - 1.2 bar;
- make sure the air valve cap is open and that the system is well deaer-
ated;
- switch the boiler on and ensure correct ignition;
- make sure the gas maximum, medium and minimum flowrate and pres-
sure values correspond to those given in the handbook on page 283;
3.1 Wiring diagram - Eolo Star 23 kW.
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Key:
B1 - Delivery sensor
B2 - Domestic circuit sensor
CRD - Digital Remote Control (optional)
DS1 - Display
E1 - Ignition plug
E2 - Igniter sensor
E4 - Safety thermostat
The boiler is arranged for application of a room thermostat (S20), On/Off
room chronothermostat, programmer clock or Digital Remote Control
(CRD). Connect to terminals 40 - 41 and remove the jumper X40.
- check activation of the safety device in the event of no gas, as well as the
relative activation time;
- check activation of the main switch located ahead of the boiler;
- make sure the intake and/or exhaust terminals are not blocked;
- check activation of the "no air" safety pressure switch;
- check activation of the control devices;
- seal the gas flowrate control devices (if settings are modified);
- check the production of domestic hot water;
- check the tightness of water circuits;
- check the ventilation and/or aeration of the place where the boiler is
installed.
If any of the checks relative to safety give negative results, do not start the
system.
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F1 - Line fuse
F2 - Neutral fuse
M1 - Boiler circulating pump
M20 - Fan
S2 - Mode selector
S3 - Block reset button
S4 - Domestic circuit flow switch
S5 - System pressure switch
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S6 - Fume pressure switch
S20 - Room thermostat (optional)
S21 - Domestic hot water temperature
increase button
S22 - Domestic hot water temperature
decrease button
S23 - Heating temperature
increase button
S24 - Heating temperature
decrease button
T1 - Ignition transformer
T2 - Boiler card transformer
X40 - Room thermostat jumper
Y1 - Gas valve
Y2 - Gas valve modulator
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