Immergas EOLO Maior, Instruction And Recomendation Booklet

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INS

TALLER

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MAINTEN

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CE TECHNI

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AN

1.14 DUCTING OF FLUES OR 

TECHNICAL SLOTS.

Ducting is an operation through which, via 

the introduction of one or more relevant pipes, 

one achieves a system for the evacuation of the 

combustion products of a gas appliance, made 

up from the coupling of an existing or new 

ducting pipe with a chimney, flue or technical 

slot (also in new buildings). Ducting requires 

ducts declared to be suitable for the purpose by 

the manufacturer, following the installation and 

user instructions, provided by the manufacturer 

and the requirements of the standards in force.

1.15 CONFIGURATION TYPE B

22

, 

OPEN CHAMBER AND FORCED 

DRAUGHT FOR INDOORS.

The appliance can be installed inside buildings 

in B

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 mode; in this case, all technical rules and 

national and local regulations in force, must be 

complied with.

- type B open chamber boilers must not be 

installed in places where commercial, artisan 

or industrial activities take place, which use 

products that may develop volatile vapours 

or substances (e.g. acid vapours, glues, paints, 

solvents, combustibles, etc.), as well as dusts 

(e.g. dust deriving from the working of wood, 

coal fines, cement, etc.), which may be harm-

ful for the components of the appliance and 

jeopardise operation.

-  in B

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 configuration, unless otherwise provided 

for by local regulations in force: the boilers 

must not be installed in bedrooms, bathrooms 

or bedsits. They must neither be installed in 

rooms containing solid fuel heat generators 

nor in rooms communicating with said rooms.

- The installation of appliances in B

23

 configu-

rations are only recommended in places that 

are not lived in and which are permanently 

ventilated.

The suitable kit referred to in paragraph 1.10 

must be used for installation.

1.16 FLUE EXHAUST TO FLUE/CHIMNEY.

The flue exhaust does not necessarily have to be 

connected to a branched type traditional flue. 

The flue exhaust, for boiler clots installed in C 

configuration, can be connected to a special 

LAS type multiple flue. For B

c

 configurations, 

exhaust is only allowed into individual chimney 

or directly into the external atmosphere via a 

suitable terminal. Multiple and combined flues 

must be specially designed according to the 

calculation method and requirements of the 

technical standards in force, by a professionally 

qualified company. Chimney or flue sections for 

connection of the flue exhaust pipe must comply 

with requisites of technical standards in force.

1.17 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.

1.18 SYSTEM FILLING.

Once the boiler is connected, proceed with sys-

tem filling via the filling cock (Fig. 2-2). 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. 

N.B.:

 during these operations turn on the 

circulation pump at intervals, by means of the 

stand-by/summer winter button (2) positioned 

on the control panel. 

Vent the circulation pump 

by loosening the front cap and keeping the motor 

running.

Screw the cap back on after the operation.

1.19 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.

1.20 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.