Flues, Chimneys, Chimney Pots And Terminals; System Filling; Condensate Trap Filling; Gas System Start-Up - Immergas VICTRIX EXA 28 1 ERP Instruction And Recommendation Booklet

1.20 FLUES, CHIMNEYS, CHIMNEY POTS
AND TERMINALS.
The flues, chimneys and chimney pots for the
evacuation of combustion products must be in
compliance with applicable standards. Chimneys
and roof-installed exhaust terminals must com-
ply with the outlet height and with the distance
from technical volumes set forth by the technical
standards in force.
Positioning the wall flue exhaust terminals. The
wall flue exhaust terminals must:
- be installed on external perimeter walls of the
building;
- be positioned according to the minimum dis-
tances specified in current technical standards.
Combustion products exhaust of natural
draught or fan assisted appliances in open-top
closed environments. In spaces closed on all
sides with open tops (ventilation pits, court-
yards etc.), direct combustion product exhaust
is allowed for natural draught or fan assisted gas
appliances with a heat input 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 sys-
tem filling via the filling cock (Fig. 1-31 and 1-3).
Filling is performed at low speed and using the
automatic vent functions 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 circulator. Check if the cap is loose. Open
the radiator vent valves.
Close radiator vent valves when only water
escapes from them.
Close the filling cock when the boiler pressure
gauge indicates approx. 1.2 bar.

1.22 CONDENSATE TRAP FILLING.

On first lighting of the boiler, flue gas may come
out the condensate drain; after a few minutes'
operation check that this no longer occurs. This
means that the drain trap is filled with conden-
sate to the correct level preventing the passage
of flue gas.

1.23 GAS SYSTEM START-UP.

To start up the system, refer to the technical
standard in force. In particular, for new gas
systems:
- open windows and doors;
- avoid presence of sparks or open flames;
- bleed all air from the pipelines;
- check that the internal system is properly sealed
according to the specifications set forth by
technical regulations in force.

1.24 BOILER START UP (IGNITION).

To commission the boiler (the operations listed
below must only be performed by a qualified firm
and without any unauthorised persons):
- check that the internal system is properly sealed
according to the specifications set forth by
technical regulations in force;
- make sure that the type of gas used corresponds
to boiler settings;
- Check that there are external factors that may
cause the formation of fuel pockets;
- switch the boiler on and check correct ignition;
- make sure that the gas flow rate and relevant
pressure values comply with those given in the
manual (Par. 3.18);
- ensure that the safety device intervenes in the
event of gas supply failure and check the relative
intervention time;
- check activation of the main switch located
upstream from the boiler and in the boiler;
- check that the intake and/or exhaust terminals
(if fitted) are not blocked.
The boiler must not be started up even if only
one of the checks should be negative.
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