Manual Unical EVE 05 RTFS 24 (page 15 of 36) (English)

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Installation info

2.2.3 - ASSEMBLING THE BOILER

Before connecting the boiler to the D.H.W. and

heating system pipes, carefully clean the pi-

pes to remove all traces of metal resulting from

processing and welding operations as well as

any oil and grease which could damage the

boiler or jeopardize its operation.

To install the boiler:

- Fix with tape the paper template to the wall;

- make two Ø 12 holes in the wall and insert

the dovels;

- position the junction points for the connect-

ion of the gas supply pipe, cold water sup-

ply pipe, D.H.W. outlet, CH flow and return

in the positions shown by the template. ;

- fit the boiler onto the support hooks;

Do not use solvents which

could damage the

components.

Unical refuses all liability for

injury to persons and animals or

damage to property resulting

from non-observance of the abo-

ve.

- connect the boiler to the gas pipe,

domestic cold and hot water pipes, CH flow

and return pipes.

- connect to electrical supply

2.2.4 - VENTILATION

The boiler must be installed in a suitable room

according to the rules in force and particular-

ly:

NATURAL DRAUGHT OPEN FLUE BOILERS

(TYPE B11bs and VMC INSTALLATIONS)

The boilers EVE 05 CTN 24 F, EVE 05 RTN 24,

EVE 05 CTN 24, are open flue boilers and are

foreseen for chimney connection: the air for

combustion is taken directly from the room in

which the boiler is installed.

The room can have both a direct ventilation

(i.e. with ventilation openings facing out-

wards) or an indirect ventilation (i.e. with ven-

tilation openings facing an adjacent room) pro-

vided that the following requirements are com-

plied with:

Direct ventilation:

- The room has to have a ventilation open-

ing of, at least,

6 cm² /kW of installed input (see input ta-

ble on par. 2.7) and, in no case, lower than

100 cm² and made directly onto an exter-

nal wall.

- The opening has to be as close as possi-

ble to the floor.

- It should not be possible to close it and it

should be protected with a grate not redu-

cing its usefull ventilation section.

- A correct ventilation can be optained also

through the addition of more openings, pro-

vided the addition of the different sections

is not less than that really needed.

connection duct to the draught diverter.

- starting from the draught diverter, the duct

must have a vertical section with a length

more than twice the diameter, before get-

ting into the chimney.

2.2.5 - FLUE GAS DISCHARGE

SYSTEM

NATURAL DRAUGHT OPEN FLUE BOILERS

Connection to the chimney

A good chimney is very important for the cor-

rect functioning of the boiler; it must therefore

conform with the following requirements:

- it must be made from waterproof material

and be resistant at the temperature of the

flue gas and relative condensate;

- it must have sufficient mechanical

strength and low thermal conductivity;

- it must be perfectly sealed to prevent cool-

ing due to parasite air inlets;

- it must be as vertical as possible and the

end section must have a chimney cap

which guarantees efficient and constant

evacuation of the combustion products;

- the chimney must have a diameter not

smaller than that of the boiler’s draught di-

verter; for chimneys with a square or

rectangular section, the internal section

must be 10% larger than the section of the

- In case it is not possible to make a venti-

lation opening close to the floor, it will be

necessary to increase its usefull section

of at least 50%.

- If an open fire is present in the same room

it needs an indipendent air supply, other-

wise the installation of a type B appliance

is not permitted.

- If in the room there are other devices

which need air for their operation (e.g. a

wall exhauster) the section of the ventila-

tion opening has to be the properly sized.

Indirect ventilation

In case it is not possible to make a room ven-

tilation opening on an external wall, it is pos-

sible to have an indirect ventilation, sucting

the air from an adjacent room, making an

opening in the lowest part of a door.

This solution is possible only if:

- The adjacent room is not a bed room

- The adjacent room is not a common part

of the building and is not a room with fire

danger (e.g. a fuel deposit, a garage, etc..)

FORCED DRAUGHT ROOM SEALED BOI-

LER

(TYPE C12 - C32 - C42 - C52 - C62 - C82)

The EVE 05 CTFS 24 F - EVE 05 RTFS 24 -

EVE 05 CTFS 24 are forced draught, room seal-

ed boilers; so they do not need particular ven-

tilation openings for the combustion air, in the

room in which they are installed.

FORCED DRAUGHT, OPEN FLUE BOILER

(TYPE B22)

If the EVE 05 CTFS 24 F - EVE 05 RTFS 24 -

EVE 05 CTFS 24 are installed in a room ac-

cording to the chimney configuration on type

B22, the same ventilation requirements esta-

blished in paragraphs Direct ventilation and

Indirect ventilation apply.

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Unical EVE 05 RTFS 24 Manual

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