Flues, Chimneys And Chimney Caps; System Filling; Gas System Start-Up; Boiler Start-Up (Ignition) - Immergas MINI EOLO X 24 3 E Instructions And Warnings

1.20 FLUES, CHIMNEYS AND CHIMNEY CAPS.

The flues, chimneys and chimney caps for the evacuation of
combustion products must be in compliance with applicable
standards. Chimneys and roof-installed exhaust terminals must
comply with the outlet height and with the distance from technical
volumes set forth by the technical standards in force.
Positioning the wall exhaust terminals. The exhaust terminals
must:
- be installed on external perimeter walls of the building (Fig. 31);
- be positioned according to the minimum distances specified in
current technical standards.
Combustion products exhaust of natural or fan assisted
appliances in open-top closed environments. In spaces closed
on all sides with open tops (ventilation pits, courtyards etc.),
direct flue gas exhaust is allowed for natural or forced draught gas
appliances with a heating power range from 4 to 35 kW, provided
the conditions as per the current technical standards are respected.

1.21 SYSTEM FILLING.

Once the boiler is connected, proceed with system filling via the
filling valve (Fig. 35).
Filling is performed at low speed to ensure release of air bubbles
in the water via the boiler and heating system vents.
The boiler has a built-in automatic venting valve on the pump.
Check if the cap is loose.
Open the radiator air vent valves. Close radiator vent valves only
when water escapes from them.
Close the filling valve when the boiler manometer indicates ap-
prox. 1.2 bar.
N.B.: during these operations turn on the circulation pump at
intervals, by means of the stand-by/summer winter switch (2 Fig.
34) positioned on the control panel. Vent the circulation pump by
loosening the front cap and keeping the motor running.
Tighten the cap after the operation.
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1.22 GAS SYSTEM START-UP.

To start up the system, refer to the standard in force: This divides
the systems and therefore the start-up operations into three
categories: new systems, modified systems, re-activated systems.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or naked flames;
- bleed all air from pipelines;
- check that the internal system is properly sealed according to
specifications.

1.23 BOILER START-UP (IGNITION).

To commission the boiler (the operations listed below must only be
performed by qualified personnel and in the presence of staff only):
- check that the internal system is properly sealed according to
the regulations in force;
- ensure that the type of gas used corresponds to boiler settings;
- check that there is no air in the gas pipe;
- check connection to a 230V-50Hz power mains, correct L-N
polarity and the earthing connection;
- check that there are external factors that may cause the formation
of fuel pockets;
- switch the boiler on and ensure correct ignition;
- make sure that the gas flow rate and relevant pressure values
comply with those given in the manual (Par. 4.1 / 4.4);
- ensure that the safety device is engaged in the event of gas supply
failure and check activation time;
- check activation of the main switch located upstream from the
boiler;
- check that the intake and/or exhaust terminals (if fitted) are not
blocked and that they are installed properly.
The boiler must not be started up even if only one of the checks
should be negative.
N.B.: the boiler preliminary check must be carried out by an au-
thorised company. The conventional boiler warranty is valid as of
the date of testing.
The test certificate and warranty is issued to the user.