Immergas Eolo star 24 3 e User manual

EOLO STAR

24 3 E

*1.032131IE*

Instruction booklet and

warning IE

Dear Customer,

Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas

customer you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your boiler. Read the following

pages carefully: you will be able to draw useful suggestions regarding the correct use of the appliance, the respect of which, will conrm your satisfaction

for the Immergas product. Contact our area authorised aer-sales centre as soon as possible to request commissioning. Our technician will verify the

correct functioning conditions; he will perform the necessary calibrations and will demonstrate the correct use of the generator. For any interventions or

routine maintenance contact Immergas Authorised Centres: these have original spare parts and boast of specic preparation directly from the manufacturer.

General recommendations

e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of

ownership. It must be kept well and consulted carefully, as all of the warnings supply important indications for safety in the installation, use and maintenance

stages. In compliance with legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established by the

Law. Installation and maintenance must be performed in compliance with the regulations in force, according to the manufacturer’s instructions and by

professionally qualied sta, intending sta with specic technical skills in the plant sector, as envisioned by the Law. Incorrect installation can cause injury

to persons and animals and damage to objects, for which the manufacturer is not liable. Maintenance must be carried out by skilled technical sta. e

Immergas Authorised Aer-sales Service represents a guarantee of qualications and professionalism. e appliance must only be destined for the use for

which it has been expressly declared. Any other use will be considered improper and therefore potentially dangerous. If errors occur during installation,

running and maintenance, due to the non compliance of technical laws in force, standards or instructions contained in this book (or however supplied

by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages and the appliance warranty is

invalidated. For further information regarding legislative and statutory provisions relative to the installation of gas heat generators, consult the Immergas

site at the following address: www.immergas.com

INDICE

USER pag.

Immergas S.p.A. declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial

documents without forewarning.

INSTALLATOR pag. TECHNICIAN pag.

DECLARATION OF CONFORMITY

For the purpose and eect of the 2009/142/CE Gas Appliance Directive, 2004/108/CE EMC Directive, 92/42/CE Eciency Directive and 2006/95/CE

Low Voltage Directive.

e Manufacturer: Immergas S.p.A. v. Cisa Ligure n° 95 42041 Brescello (RE)

DECLARES THAT: the Immergas boiler model: Eolo Star 24 3 E

is in compliance with the same European Community Directives Signature:

Mauro Guareschi

Research & Development Director

1 Boiler installation...................................... 3

1.1 Installation recommendations.................3

1.2 Main dimensions....................................... 4

1.3 Main dimensions

recessing kit (optional).............................4

1.4 Anti-freeze protection. .............................4

1.5 Attachments............................................... 4

1.6 Remote controls and room

chronothermostats (optional). ................5

1.7 Immergas ue systems..............................6

1.8 Outdoor installation in

partially protected area. ...........................6

1.9 Outdoor installation using recessed frame

(with direct air intake)..............................6

1.10 Indoor installation. ...................................9

1.11 Fume exhaust to ue/chimney...............13

1.12 Ducting of existing ues.........................13

1.13 Flues, chimneys and chimney caps.......13

1.14 System lling............................................13

1.15 Gas system start-up.................................13

1.16 Boiler start up (ignition). .......................13

1.17 Circulation pump. ...................................13

1.18 Kits available on request.........................14

1.19 Boiler components..................................14

2 Instructions for use and maintenance..15

2.1 Cleaning and maintenance. ...................15

2.2 General warnings. ................................... 15

2.3 Control panel...........................................15

2.4 Fault and anomaly signals......................16

2.5 Restore heating system pressure............16

2.6 Draining the system................................16

2.7 Anti-freeze protection. ...........................16

2.8 Case cleaning. ..........................................17

2.9 Decomissioning.......................................17

3 Boiler start-up.

(Initial check)...........................................18

3.1 Hydraulic layout......................................18

3.2 Wiring diagram. ...................................... 19

3.3 Troubleshooting. .....................................19

3.4 Converting the boiler to other types of

gas..............................................................19

3.5 Checks following conversion to another

type of gas.................................................20

3.6 Possible adjustments...............................20

3.7 Programming the p.C.B .........................20

3.8 Automatic slow ignition function with

timed ramp delivery................................21

3.9 “Chimney sweep function”.....................21

3.10 Heating timer...........................................21

3.11 Pump anti-block function......................21

3.12 Funzione antitrala circuito sanitario..21

3.13 Radiators anti-freeze function...............21

3.14 P.C.B. Periodical self-check....................21

3.15 Casing removal........................................22

3.16 Yearly appliance check

and maintenance. ....................................22

3.17 Variable heat power.................................24

3.18 Combustion parameters.........................24

3.19 Technical data..........................................25

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INSTALLATORUSERTECHNICIAN

1BOILER INSTALLATION.

1.1 INSTALLATION

RECOMMENDATIONS.

e Eolo Star 24 3 boiler has been designed for

wall mounted installation or installation inside

the wall using the recessed frame provided; they

must be used to heat environments, to produce

hot water and similar purposes. In the case of

wall installation the wall surface must be smooth,

without any protrusions or recesses enabling

access to the rear part. ey are NOT designed

to be installed on plinths or oors (Fig. 1-1).

By varying the type of installation the classica-

tion of the boiler also varies, precisely:

- Indoor installation:

- without the 2 intake caps and with upper

casing. exhaust terminal Ø80 (conguration

type B22);

- without upper casing and with concentric

terminals and separators (conguration type

C).

- Outdoor installation in partially protected

areas:

- without the 2 intake caps and with upper

casing. Exhaust terminal Ø80 (conguration

type C);

- the upper casing is recommended but not

obligatory with concentric terminals and

separators (this conguration is also type C).

- Outdoor installation with recess frame:

- using the spacers under the side plugs of the

sealed chamber (conguration type C);

- leave the plugs of the sealed chamber

mounted and use the concentric pipes or

other types of pipes suitable for the sealed

chamber for air intake and fume exhaustion

(conguration type C).

Only professionally qualied heating/plumbing

technicians are authorised to install Immergas

gas appliances. Installation must be carried out

according to the standards, current legislation

and in compliance with local technical regu-

lations and the required technical procedures.

Installation of the Eolo star 24 3 E boiler when

regarding gases with a greater density than air

(remember, as an example, that it is prohibited to

install plants powered with the above-mentioned

gas in rooms where the oor is at a lower quota

that the average external country one). Before

installing the appliance, ensure that it is delive-

red in perfect condition; if in doubt, contact the

supplier immediately. Packing materials (staples,

nails, plastic bags, polystyrene foam, etc.) consti-

tute a hazard and must be kept out of the reach

of children. If the appliance is installed inside

or between cabinets, ensure sucient space for

normal servicing; therefore it is advisable to le-

ave clearance of at least 3 cm between the boiler

casing and the vertical sides of the cabinet. Leave

adequate space above the boiler for possible water

and fume removal connections.

Keep all ammable objects away from the ap-

pliance (paper, rags, plastic, polystyrene, etc.).

Do not place household appliances underneath

the boiler as they could be damaged if the sa-

fety valve intervenes (if not conveyed away by

a discharge funnel), or if there are leaks from

the hydraulic connections; on the contrary, the

manufacturer cannot be held responsible for

any damage caused to the household appliances.

In the event of malfunctions, faults or incorrect

operation, turn the appliance o immediately and

contact a qualied technician (e.g. the Immergas

Technical Aer-Sales Centre, which has speci-

cally trained sta and original spare parts) Do not

attempt to modify or repair the appliance alone.

Failure to comply with the above implies personal

responsibility and invalidates the warranty.

• Installation regulations: this boiler can be in-

stalled outdoors in a partially protected area.

A partially protected area is one in which the

appliance is not exposed to the direct action of

the weather (rain, snow, hail, etc...). If necessary

it is possible to install the boiler in positions

totally exposed to the direct action of the we-

ather using only the cover kit (Optional) e

boiler can be installed inside a wall using the

appropriate recessed frame (Optional).

Important: Wall mounting of the boiler on the

wall or inside the wall must guarantee stable

and efficient support for the generator. The

recessed frame kit (Optional) guarantees an

adequate support only if installed correctly (in

accordance with the code of practice) following

the instructions on the instruction leaet. e

recessed frame for the Eolo Star 24 3 E boiler is

not a supporting structure and must not replace

the wall removed. It is necessary to position the

boiler inside the wall. For safety reasons against

any leaks it is necessary to plaster the boiler

housing in the brick wall.

e plugs (standard supply) are to be used only in

conjunction with the mounting brackets or xing

template to x the appliance to the wall; they only

ensure adequate support if inserted correctly

(according to technical standards) in walls made

of solid or semi-hollow brick or block. In the

case of walls made from hollow brick or block,

partitions with limited static properties, or in any

case walls other than those indicated, a static test

must be carried out to ensure adequate support.

N.B.: the hex head screws supplied in the blister

pack are to be used exclusively to x the relative

mounting bracket to the wall.

ese boilers are used to heat water to below

boiling temperature in atmospheric pressure.

ey must be attached to a heating system sui-

table for their capacity and voltage.

YES NO

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INSTALLATORUSERTECHNICIAN

1.2 MAIN DIMENSIONS.

1.3 MAIN DIMENSIONS

RECESSING KIT OPTIONAL.

Key:

G - Gas supply

AC - Domestic hot water outlet

ACV - Domestic hot water inlet

solar valve kit (Optional)

AF - Domestic cold water inlet

R - System return

M - System delivery

V - Electric attachment

N.B.: connection group

(optional)

1.4 ANTIFREEZE PROTECTION.

Minimum temperature -5°C. e boiler is sup-

plied with an antifreeze function as standard that

activates the pump and burner when the system

water temperature in the boiler falls below 4°C.

e antifreeze function is only guaranteed if:

- the boiler is correctly connected to gas and

electricity power supply circuits;

- the boiler is powered constantly;

- the boiler is not in no ignition block (Parag.

2.4);

- the boiler essential components are not faulty.

In these conditions the boiler is protected against

freezing to an environmental temperature of -5°C.

Minimum temperature -15°C. If the boiler is

installed in a place where the temperature falls

below -5°C, and in the event there is no gas (or

the boiler goes into ignition block), the appliance

can freeze.

To prevent the risk of freezing follow the instruc-

tions below:

- Protect the heating circuit from freezing by

adding a high quality anti-freeze liquid that is

not considered a health hazard. It is necessary

to carefully follow manufacturer instructions

regarding this liquid when considering the

percentage necessary that depends on the mini-

mum temperature the system is to be protected

from. An aqueous solution must be prepared

with a potential water pollution potential of 2

(EN 1717:2002).

e materials that Immergas boilers are made

from are resistant to ethylene and propylene glycol-

based anti-freeze liquids (If the mixtures have been

prepared according to industry standards).

For life and possible disposal, follow the supplier’s

instructions.

- Protect the condensate drain trap and circuit

board against freezing by using an accessory

that is supplied on request (antifreeze kit)

comprising two electric heating elements,

the relevant cables and a control thermostat

(carefully read the installation instructions

contained in the accessory kit pack).

Boiler anti-freezing protection is thus ensured

only if:

- the boiler is correctly connected to electricity

power supply circuits;

- Main switch is inserted;

- the anti-freeze kit components are ecient.

In these conditions the boiler is protected against

freezing to temperature of -15°C.

e warranty does not cover damage due to inter-

ruption of the electrical power supply and failure

to comply with that stated on the previous page.

N.B.: if the boiler is installed in places where

the temperature falls below 0°C, the heating

attachment pipes must be insulated.

1.5 ATTACHMENTS.

Gas connection (Appliance category II2H3+).

Our boilers are designed to operate with methane

gas (G20) and LPG. Supply pipes must be the

same as or larger than the 3/4”G boiler tting.

Before connecting the gas line, carefully clean

inside all the fuel feed system pipes to remove any

residue that could impair boiler eciency. Also

make sure the gas corresponds to that for which

the boiler is prepared (see boiler data-plate). If

dierent, the appliance must be converted for

operation with the other type of gas (see conver-

ting appliance for other gas types). e dynamic

Height

(mm)

Width

(mm)

Depth

(mm)

756 440 240

ATTACHMENTS

GAS DOMESTIC

HOT WATER PLANT

GACAFRM

3/4” 1/2” 1/2” 3/4” 3/4”

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INSTALLATORUSERTECHNICIAN

gas supply (methane or LPG) pressure must also

be checked according to the type used in the

boiler, as insucient levels can reduce generator

output and cause malfunctions.

Ensure correct gas cock connection. e gas

supply pipe must be suitably dimensioned accor-

ding to current regulations in order to guarantee

correct gas ow to the boiler even in conditions

of maximum generator output and to guarantee

appliance eciency (technical specications).

e coupling system must conform to standards.

Combustible gas quality. e appliance has been

designed to operate with gas free of impurities;

otherwise it is advisable to t special lters up-

stream from the appliance to restore the purity

of the gas.

Storage tanks (in case of supply from LPG

depot).

- New LPG storage tanks may contain residual

inert gases (nitrogen) that degrade the mixture

delivered to the appliance casing functioning

anomalies.

- Due to the composition of the LPG mixture,

layering of the mixture components may occur

during the period of storage in the tanks. is

can cause a variation in the heating power of

the mixture delivered to the appliance, with

subsequent change in its performance.

Hydraulic attachment.

Important: In order not to void the warranty

before making the boiler connections, carefully

clean the heating system on the primary heat

exchanger (pipes, radiators, etc.) with special

pickling or de-scaling products to remove any

deposits that could compromise correct boiler

operation.

In compliance with Standards in force it is man-

datory to treat the water in the heating system

chemically in order to protect the system and

appliance from deposits of lime scale.

Water connections must be made in a rational

way using the couplings on the boiler template.

e boiler safety valves outlet must be connected

to a draining funnel. Otherwise, the manufactu-

rer declines any responsibility in case of ooding

if the drain valves cut in.

Important: to preserve the duration of appliance

eciency features, in the presence of water whose

features can lead to the deposit of lime scale,

installation of the “polyphosphate dispenser” kit

is recommended. On the basis of the Standards in

force, it is mandatory to treat the water with over

25 French degrees in the heating circuit and over

15 French degrees for DHW using conditioning

chemicals for powers < 100 kW or with soeners

for powers > 100 kW.

Electrical connection: e “Eolo Star 24 3 E”

boiler has an IPX5D protection rating for the

entire appliance. Electrical safety of the unit is

reached when it is correctly connected to an

ecient earthing system as specied by current

safety standards.

Important: Immergas S.p.A. declines any

responsibility for damage or physical injury

caused by failure to connect the boiler to an

ecient earth system or failure to comply with

the reference standards.

Also ensure that the electrical installation

corresponds to maximum absorbed power

specications as shown on the boiler data-plate.

e boilers are supplied complete with an “X”

type power cable without plug. e power sup-

ply cable must be connected to a 230V ±10% /

50Hz mains supply respecting L-N polarity and

earth connection , is network must also

have a multi-pole circuit breaker with class III

over-voltage category. When replacing the power

supply cable, contact a qualied technician (e.g.

the Immergas Aer-Sales Technical Assistance

Service). e power cable must be laid as shown.

In the event of mains fuse replacement on the

control board, use a 3.15A quick-blow fuse. For

the main power supply to the appliance, never

use adapters, multiple sockets or extension leads.

1.6 REMOTE CONTROLS AND

ROOM CHRONOTHERMOSTATS

OPTIONAL.

La caldaia è predisposta per l’applicazione dei

cronotermostati ambiente o dei comandi remoti

che sono disponibili come kit optional.

All Immergas chronothermostats are connec-

ted with 2 wires only. Carefully read the user

and assembly instructions contained in the

accessory kit.

• On/O digital chronothermostat (Fig. 1-5). e

chronothermostat allows:

- setarea a două valori de temperatură ambient:

set two room temperature values: one for day

(comfort temperature) and one for night

(lower temperature);

- set up to four on/o dierential weekly pro-

grams;

- select the desired function mode from the

various possible alternatives:

• permanent functioning in comfort temp.

• permanent functioning in reduced temp.

• permanent functioning in adjustable anti-

freeze temp.

e chronothermostat is powered by two 1.5V

LR 6 type alkaline batteries;

• Digital Remote Control Device with climate

chronothermostat function (Fig. 1.6). In addi-

tion to the functions described in the previous

point, the Digital Remote Control panel enables

the user to control all the important informa-

tion regarding operation of the appliance and

the heating system with the opportunity of

easily intervening on the previously set para-

meters without having to go to the place where

the appliance is installed. e Digital Remote

Control panel is provided with self-diagnosis to

display any boiler functioning anomalies. e

climate chronothermostat incorporated into

the remote panel enables the system delivery

temperature to be adjusted to the actual needs

of the room being heated, in order to obtain

the desired room temperature with extreme

precision and therefore with evident saving in

running costs. e chronothermostat is fed

directly by the boiler by means of the same 2

wires used for the transmission of data between

boiler and chronothermostat.

Digital Remote Control or On/O chronother-

mostat electrical connections (Optional). e

operations described below must be performed af-

ter having removed the voltage from the appliance.

Any thermostat or On/O environment chro-

nothermostat must be connected to clamps 40

and 41 eliminating jumper X40 (Fig. 3-2). Make

sure that the On/O thermostat contact is of the

“clean” type, i.e. independent of the mains supply;

otherwise the electronic adjustment card would

be damaged. e Digital Remote Control must be

connected to clamps 40 e 41 eliminating jumper

X40 on the P.C.B. (in the boiler), (Fig. 3-2).

Important: If the Digital Remote Control is used,

arrange two separate lines in compliance with

current regulations regarding electrical systems.

No boiler pipes must ever be used to earth the

electric system or telephone lines. Ensure eli-

mination of this risk before making the boiler

electrical connections.

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INSTALLATORUSERTECHNICIAN

1.7 IMMERGAS FLUE SYSTEMS.

Immergas supplies various solutions separately

from the boiler regarding the installation of air

intake terminals and ue extraction, which are

fundamental for boiler operation.

Important: e boiler must only be installed

together with an original Immergas air intake

and fume extraction system. is system can be

identied by an identication mark and special

distinctive marking bearing the note: “not for

condensing boilers”.

e ue exhaust pipes must not be in contact with

or be near to ammable materials. Moreover,

they must not pass through buildings or walls

made of ammable material.

Positioning of double lip seals. For correct

positioning of lip seals on elbows and extensions,

follow the direction of assembly given in gure

(Fig. 1-7).

• Resistance factors and equivalent lengths.

Each ue extraction system component has a

Resistance Factor based on experimental tests

and specied in the table below. e resistance

factor for individual components does not

depend either on the type of boiler on which

it is installed or the actual dimensions. It is,

however, conditioned by the temperature of the

uids that pass through the pipe and therefore

varies according to applications for air intake

or ue exhaust. Each single component has a

resistance corresponding to a certain length

in metres of pipe of the same diameter; the

so-called equivalent length, obtained from the

ration between he relative Resistance Factors.

All boilers have an experimentally obtainable

maximum Resistance Factor equal to 100.e

maximum Resistance Factor allowed corre-

sponds to the resistance encountered with the

maximum allowed pipe length for each type

of Terminal Kit. This information enables

calculations to be made in order to verify the

possibility of various congurations of ue

extraction systems.

1.8 OUTDOOR INSTALLATION IN

PARTIALLY PROTECTED AREA.

N.B.: a partially protected area is one in which the

appliance is not exposed to the direct action of the

weather (rain, snow, hail, etc...).

• Conguration with cover kit and direct air

intake (boiler type C).

Using the relevant cover kit, direct air intake is

possible and fumes are exhausted into a single

ue or directly to the outside (Fig. 1-8).

Diaphragm installation. For correct functioning

of the boiler congured with direct air intake, it

is necessary to install a diaphragm on the outlet

of the sealed chamber and before the diaphragm

exhaust pipe Ø 38 (Fig. 1-14).

• Cover kit assembly (Fig. 1-9). Remove the

two plugs and the gaskets present from the two

lateral holes with respect to the central one.

Install the Ø 80 outlet ange on the central hole

of the boiler, taking care to insert the gasket

supplied with the kit and tighten by means of

the screws provided. Install the upper cover,

xing it using the 4 screws present in the kit,

positioning the relevant gaskets. Engage the 90°

Ø 80 bend with the male end (smooth) in the

female end (with lip seal) of the Ø 80 ange unit

until it stops. Introduce the gasket, making it

run along the bend. Fix it using the sheet steel

plate and tighten by means of the straps present

in the kit, making sure to block the 4 gasket

aps. Fit the male end (smooth) of the exhaust

terminal into the female end of the bend 90° Ø

80, making sure that the relevant wall sealing

plate is already tted; this will ensure hold and

joining of the elements making up the kit.

• Coupling of extension pipes. To install snap-t

extensions with other elements of the fume

extraction elements assembly, proceed as fol-

lows: Couple the pipe or elbow with the male

side (smooth) on the female side (with lip seal)

to the end stop on the previously installed

element. is will ensure sealing eciency of

the coupling.

Max. length of exhaust ue. e ue pipe (verti-

cal or horizontal) can be extended to a max. length

of 12 m straight route, using insulated pipes (Fig.

1-31). To prevent problems of fume condensate

in the exhaust pipe Ø 80, due to fume cooling

through the wall, the length of the pipe (not insu-

lated) must be limited to just 5 m.

Example of installation with direct vertical

terminal in partially protected location. When

the vertical terminal for direct discharge of

combustion fumes is used, a minimum gap of

300 mm must be le between the terminal and

the balcony above. e height A + B (always with

respect to the balcony above), must be equal to

or less than 2000 mm (Fig. 1-11).

• Conguration without cover kit (boiler type

C).

By leaving the side plugs tted, it is possible to

install the appliance externally, in partially co-

vered places, without the cover kit. Installation

takes place using the Ø60/100 and Ø80/125

concentric horizontal intake/ exhaust kits. Refer

to the paragraph relative to indoor installation. In

this conguration the upper cover kit guarantees

additional protection for the boiler. It is recom-

mended but not compulsory.

1.9 OUTDOOR INSTALLATION USING

RECESSED FRAME WITH DIRECT

AIR INTAKE.

For this conguration, use the appropriate spa-

cers (included in the attachment kit) and place

them under the side plugs of the sealed chamber.

Air intake takes place directly from the external

environment (the recessed frame is thus venti-

lated) and ue exhaust in the ue or outdoors.

eboilerinthisconguration,followingmounting

instructions stated below, is classed as type C.

In this conguration, the ue exhaust must be

connected to its own individual ue or chan-

nelled directly into the external atmosphere.

The technical regulations in force must be

respected.

Max. length of exhaust ue. e exhaust duct

(vertical or horizontal) can be extended to a max.

of 5 straight metres in order to prevent problems

of fume condensation owing to their cooling

through the wall.

Diaphragm installation. For correct functioning

of the boiler, referring to installation with direct

air intake (type C if outdoors, type B22 if indo-

ors), a diaphragm must be installed on the outlet

of the sealed chamber and before the diaphragm

exhaust pipe Ø 38.

N.B.: the diaphragm is supplied together with

the boiler (Fig. 1-14).

• Spacer installation. For installation with direct

air intake, type C is used outdoors, type B22

is used indoors. e 4 spacers (available as

optional inside the attachment kit) should be

inserted between the boiler and the two plugs

of the sealed chamber so that air can reach the

boiler directly from the place of installation

(Fig. 1-12 and 1-13).

• Coupling of extension pipes. To install

snap-t extensions with other elements of the

fume extraction elements assembly, proceed

as follows: Install the pipe or elbow with the

male side (smooth) in the female section (with

lip seal) to the stop on the previously installed

element. is will ensure sealing eciency of

the coupling.

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INSTALLATORUSERTECHNICIAN

Diaphragm installation. For correct functio-

ning of the boiler it is necessary to install a dia-

phragm on the outlet of the sealed chamber and

before the intake and exhaust pipe (Fig. 1-14).

e choice of suitable diaphragm takes place on

the basis of the type of pipe and its maximum

extension: this calculation can be carried out

using the following tables:

N.B.: the diaphragms are supplied together with

the boiler.

VERTICAL TERMINAL KIT FOR DIRECT DRAINING

INTAKE COVER KIT

DIAPHRAGM

Diaphragm Extension in meters

pipe Ø 60/100 horizontal

Ø 38 From 0 to 1

Ø 42.5 Exceeding 1

Diaphragm Pipe extension in metres Ø

60/100 vertical

Ø 38 From 0 to 3.2

Ø 42.5 Exceeding 3.2

Diaphragm Pipe extension in metres Ø

80/125 horizontal

Ø 38 From 0 to 3.3

Ø 42.5 Exceeding 3.3

Diaphragm Pipe extension in metres Ø

80/125 vertical

Ø 38 From 0 to 8.1

Ø 42.5 Exceeding 8.1

Diaphragm *Extension in metres

vertical pipe Ø 80

without bends

exhaust intake

- Ø 45 From 0 to 18

Ø 42.5 - From 14 to 40

Diaphragm *Extension in metres

horizontal pipe Ø 80

with two bends

exhaust intake

- Ø 45 From 0 to 14

Ø 42.5 - From 14 to 35

Diaphragm

intake

**Extension in metres

horizontal pipe Ø 80 with

two bends

Ø 45 From 0 to 27

Diaphragm

intake

**Extension in metres

vertical pipe Ø 80

without bends

Ø 45 From 0 to 27

* ese maximum extension values are considered

intake with 1 metre drain pipe.

** ese maximum extension values are considered

exhaust with 1 metre intake pipe.

8 - IE

INSTALLATORUSERTECHNICIAN

DUCT TYPE

Resistance

Factor

(R)

Equivalent

length in m of concentric

pipe

Ø 60/100

Equivalent

length in m of concentric

pipe

Ø 80/125

Equivalent

length

in m of pipe

Ø 80

Concentric pipe Ø 60/100 m 1 Intake and

Exhaust 16,5 m 1 m 2,8 Intake m 7,1

Exhaust m 5,5

Concentric bend 90° Ø 60/100 Intake and

Exhaust 21 m 1,3 m 3,5 Intake m 9,1

Exhaust m 7,0

Concentric bend Ø 60/100 Intake and

Exhaust 16,5 m 1 m 2,8 Intake m 7,1

Exhaust m 5,5

Terminal complete with concentric

horizontal

intake-exhaust Ø 60/100 Intake and

Exhaust 46 m 2,8 m 7,6

Intake m 20

Exhaust m 15

Terminal complete with concentric

horizontal intake-exhaust Ø 60/100 Intake and

Exhaust 32 m 1,9 m 5,3 Intake m 14

Exhaust m 10,6

Terminal complete with concentric vertical

intake-exhaust Ø 60/100 Intake and

Exhaust 41,7 m 2,5 m 7

Intake m 18

Exhaust 14

Concentric pipe Ø 80/125 m 1 Intake and

Exhaust 6 m 0,4 m 1,0 Intake m 2,6

Exhaust m 2,0

Concentric bend Ø 80/125 Intake and

Exhaust 7,5 m 0,5 m 1,3 Intake m 3,3

Exhaust m 2,5

Concentric bend Ø 80/125 Intake and

Exhaust 6 m 0,4 m 1,0 Intake m 2,6

Exhaust m 2,0

Terminal complete with concentric vertical

intake-exhaust Ø 80/125

Intake and

Exhaust 33 m 2,0 m 5,5

Intake m 14,3

Exhaust m 11,0

Terminal complete with concentric vertical

intake-exhaust Ø 80/125 Intake and

Exhaust 26,5 m 1,6 m 4,4

Intake m 11,5

Exhaust m 8,8

Terminal complete with concentric

horizontal

intake-exhaust Ø 80/125 Intake and

Exhaust 39 m 2,3 m 6,5

Intake m 16,9

Exhaust m 13

Terminal complete with horizontal

intake-exhaust Ø 80/125 Intake and

Exhaust 34 m 2,0 m 5,6

Intake m 14,8

Exhaust m 11,3

Concentric adapter from Ø 60/100 to Ø

80/125 with condensate trap Intake and

Exhaust 13 m 0,8 m 2,2

Intake m 5,6

Exhaust m 4,3

Concentric adapter from

Ø 60/100 al Ø 80/125 Intake and

Exhaust 2 m 0,1 m 0,3 Intake m 0,8

Exhaust m 0,6

Pipe Ø 80 m 1 (with and without insula-

tion) Intake 2,3 m 0,1 m 0,4 Intake m 1,0

Scarico 3 m 0,2 m 0,5 Exhaust m 1,0

Complete air intake terminal Ø 80 m 1

(with or without insulation) Intake 5 m 0,3 m 0,8 Intake m 2,2

Intake terminal Ø 80

Exhaust terminal Ø 80

Intake 3 m 0,2 m 0,5 Intake m 1,3

Scarico 2,5 m 0,1 m 0,4 Exhaust m 0,8

Bend 90° Ø 80 Intake 5 m 0,3 m 0,8 Intake m 2,2

Scarico 6,5 m 0,4 m 1,1 Exhaust m 2,1

Bend 45° Ø 80 Intake 3 m 0,2 m 0,5 Intake m 1,3

Scarico 4 m 0,2 m 0,6 Exhaust m 1,3

Parallel split Ø 80

from Ø 60/100 to Ø 80/80 Intake and

Exhaust 8,8 m 0,5 m 1,5 Intake m 3,8

Exhaust m 2,9

Tables of Resistance Factors and Equivalent Lengths.

C12

1-15

C12

C12 C12

C12

1-16

1-18

1-19

1-17

9 - IE

INSTALLATORUSERTECHNICIAN

1.10 INDOOR INSTALLATION.

• Type C conguration, sealed chamber and

forced draught.

Horizontal intake - exhaust kit Ø60/100. Kit

assembly (Fig. 1-15): install the bend with ange

(2) on the central hole of the boiler inserting the

gasket (1) and tighten using the screws in the kit.

Couple the terminal pipe (3) with the male end

(smooth) into the female end of the bend (with

lip seals) up to the stop; making sure that the in-

ternal wall sealing plate and external wall sealing

plate have been tted, this will ensure sealing

and joining of the elements making up the kit.

Note: when the boiler is installed in areas where

very rigid temperatures can be reached, a special

anti-freeze kit is available that can be installed as

an alternative to the standard kit.

• Coupling extension pipes and concentric

elbows Ø 60/100. To snap-t extensions with

other elements of the fume extraction elements,

operate as follows Install the concentric pipe

or elbow with the male side (smooth) on the

female section (with lip seal) to the end stop

on the previously installed element. is will

ensure the sealing and joining of the elements

correctly.

e Ø 60/100 horizontal intake/exhaust kit can

be installed with the rear, right side, le side and

front outlet.

• Application with rear outlet (Fig. 1-16). e

970 mm pipe length enables routing through

a maximum thickness of 775 mm. Normally

the terminal must be shortened. Calculate

the distance by adding the following values:

Part thickness + internal projection + exter-

nal projection. e minimum indispensable

projection values are given in the gure.

• Application with side outlet (Fig. 1-17); Using

the horizontal intake-exhaust kit, without the

special extensions, enables routing through

a wall thickness of 720 mm with the le side

outlet and 650 with the right side outlet.

• Extensions for horizontal kit. e horizontal

intake-exhaust kit Ø 60/100 can be extended

up to a max. horizontal distance of 3,000 mm

including the terminal with grid and excluding

the concentric bend leaving the boiler. is

conguration corresponds to a resistance factor

of 100. In these cases the special extensions

must be requested.

Connection with N°1 extension (Fig. 1-18).

Max. distance between vertical boiler axis and

external wall is 1855mm.

Connection with N°2 extensions (Fig. 1-19).

Max. distance between vertical boiler axis and

external wall is 2805mm.

Horizontal intake-exhaust kit Ø 80/125 Kit

assembly (Fig. 1-20): install the bend with ange

(2) onto the central hole of the boiler inserting

the gasket (1) and tighten using the screws in the

kit. Fit the male end (smooth) of the adapter (3)

up to the stop on the female end of the bend (2)

(with lip seal). Fit the Ø 80/125 (4) concentric

terminal pipe with the male end (smooth) to the

female end of the adapter (3) (with lip gasket) up

to the stop; making sure that the internal wall

sealing plate and external wall sealing plate have

been tted, this will ensure sealing and joining

of the elements making up the kit.

• Coupling extension pipes and concentric

elbows Ø 80/125. To snap-t extensions with

other elements of the fume extraction elements,

operate as follows Install the concentric pipe

or elbow with the male side (smooth) on the

female section (with lip seal) to the end stop

on the previously installed element. is will

ensure sealing and joining of the elements

correctly.

Important: if the exhaust terminal and/or exten-

sion concentric pipe needs shortening, consider

that the internal duct must always protrude by 5

mm with respect to the external duct.

Normally the Ø 80/125 horizontal intake-exhaust

kit is used if particularly long extensions are re-

quired; the Ø 80/125 kit can be installed with the

rear, right side, le side or front outlet.

• Extensions for horizontal kit. e Ø 80/125

horizontal intake-exhaust kit can be extended

up to a max. horizontal distance of 7,300 mm

including the terminal with grid and excluding

the concentric bend leaving the boiler and the

adapter Ø 60/100 in Ø 80/125 (Fig. 1-21). is

conguration corresponds to a resistance factor

of 100. In these cases the special extensions

must be requested.

N.B.: when installing the pipes, a section clamp

with pin must be installed every 3 metres.

• External grill. N.B.: for safety purposes, do not

even temporarily obstruct the boiler intake-

exhaust terminal.

e kit includes:

N°1- Gasket (1)

N°1 - Concentric bend 90° (2)

N°1 - Intake-exhaust concentric pipe

Ø60/100 (3)

N°1 - Internal white wall sealing plate (4)

N°1 - External grey wall sealing plate (5)

C32

1-241-23

C32

C12

1-20

C12

1-21

10 - IE

INSTALLATORUSERTECHNICIAN

Vertical kit with aluminium tile Ø 80/125. Kit

assembly (Fig. 1-23): install the concentric ange

(2) on the central hole of the boiler inserting the

gasket (1) and tighten using the screws in the

kit. Fit the male end (smooth) of the adapter (3)

into the female end of the concentric ange (2).

Imitation aluminium tile installation. Replace the

tile with the aluminium sheet (5), shaping it to

ensure that rainwater runs o. Position the xed

half-shell (7) and insert the intake-exhaust pipe

(6). Fit the Ø 80/125 concentric terminal pipe

with the male end (6) (smooth) to the female end

of the adapter (3) (with lip gasket) up to the stop;

making sure that the wall sealing plate has been

tted, this will ensure sealing and joining of the

elements making up the kit.

• Coupling extension pipes and concentric el-

bows. To install snap-t extensions with other

elements of the fume extraction elements as-

sembly, proceed as follows: Install the concen-

tric pipe or elbow with the male side (smooth)

on the female section (with lip seal) to the end

stop on the previously installed element. is

will ensure sealing and joining of the elements

correctly.

Important: if the exhaust terminal and/or exten-

sion concentric pipe needs shortening, consider

that the internal pipe must always protrude by 5

mm with respect to the external pipe.

is specic terminal enables ue exhaust and

air intake, necessary for combustion, in a vertical

direction.

N.B.: e Ø 80/125 vertical kit with aluminium

tile enables installation on terraces and roofs with

a maximum slope of 45% (24°) and the height

between the terminal cap and half-shell (374

mm) must always be respected.

e vertical kit with this conguration can be

extended up to a maximum of 12200 mm vertical

rectilinear, with the terminal included (Fig. 1-24).

is conguration corresponds to a resistance

factor of 100. In this case the special extensions

must be requested.

The terminal Ø 60/100 can also be used for

vertical exhaust, in conjunction with concentric

flange code 3.011141 (sold separately). The

height between the terminal cap and half-shell

(374 mm) must always be respected (Fig. 1-24).

e vertical kit with this conguration can be

extended up to a maximum of 4700 mm vertical

rectilinear, with the terminal included (Fig. 1-24).

Separator kit Ø 80/80. e Ø 80/80 separator

kit, allows separation of the exhaust ues and

air intake pipes according to the diagram shown

in the gure. Combustion products are expelled

from pipe (S). Air is taken in through pipe (A)

for combustion. The intake pipe (A) can be

installed either on the right or le hand side of

the central exhaust pipe (S). Both ducts can be

routed in any direction.

• Kit assembly (Fig. 1-25): install ange (4) on

the central hole of the boiler, tting the gasket

(1), and tighten with the at-tipped hex screws

included in the kit. Remove the flat flange

present in the lateral hole with respect to the

central one (according to needs) and replace it

with the ange (3), positioning the gasket (2)

already present in the boiler and tighten using

the supplied self-threading screws. Fit the male

end (smooth) to the bends (5) in the female end

of the anges (3 and 4). Fit the intake terminal

(6) with the male section (smooth) in the

female section of the bend (5) to the end stop,

ensuring that the internal and external rings are

tted. Fit the exhaust pipe (9) with the male end

(smooth) to the female end of the bend (5) up

to the stop; making sure that the internal wall

sealing plate has been tted. is will ensure

sealing and joining of the elements making up

the kit.

e kit includes:

N°1- Gasket (1)

N°1 - Concentric bend Ø 60/100 (2)

N°1 - Adapter Ø 60/100 for Ø 80/125 (3)

N°1 - Concentric intake-exhaust terminal

Ø 80/125 (4)

N°1 - Internal white wall sealing plate (5)

N°1 - External grey wall sealing plate (6)

e kit includes:

N°1 - Gasket (1)

N°1 - Female concentric ange (2)

N°1 - Adapter Ø 60/100 for Ø 80/125 (3)

N°1 - Wall sealing plate (4)

N°1 - Aluminium tile (5)

N°1 - Concentric intake-exhaust terminal

Ø 80/125 (6)

N°1 - Fixed half-shell

N°1 - Mobile half-shell

MAXIMUM LENGTH

C82

1-25

C42

C52

1-26

1-28

C82

1-27

11 - IE

INSTALLATORUSERTECHNICIAN

• Coupling of extension pipes and elbows. To

install snap-t extensions with other elements

of the fume extraction elements assembly, pro-

ceed as follows: Install the pipe or elbow with

the male side (smooth) on the female section

(with lip seal) to the end stop on the previously

installed element. is will ensure sealing and

joining of the elements correctly.

• Figure 1-27 shows the configuration with

vertical exhaust and horizontal intake.

• Installation clearances. Figure 1-26 gives the

min. installation space dimensions of the Ø

80/80 separator terminal kit in limited condi-

tions.

• Extensions for the separator kit Ø 80/80. e

max. vertical straight length (without bends)

that can be used for Ø 80 intake and exhaust

pipes is 41 metres of which 40 intake and 1

exhaust. The total length corresponds to a

resistance factor of 100. e total usable length

obtained by adding the length of the intake and

exhaust pipes Ø 80 must not exceed the values

stated in the following table. If mixed accessori-

es or components are used (e.g. changing from

a separator Ø 80/80 to a concentric pipe), the

maximum extension can be calculated by using

a resistance factor for each component or the

equivalent length. e sum of these resistance

factors must not exceed 100.

• Temperature loss in fume ducts. To prevent

problems of fume condensate in the exhaust

pipe Ø 80, due to fume cooling through the

wall, the length of the pipe must be limited to

just 5 m. Fig. 1-28). If longer distances must

be covered, use Ø 80 pipes with insulation (see

insulated separator kit Ø 80/80 chapter).

N.B.: when installing the Ø 80 ducts, a section

clamp with pin must be installed every 3 metres.

* e air intake pipe can be increased to 2.5

metres if the exhaust bend is eliminated, 2

metres if the air intake bend is eliminated, and

4.5 metres eliminating both bends.

e kit includes:

N°1 - Exhaust gasket (1)

N°1 - Female intake ange (3)

N°1 - Flange gasket (2)

N°1 - Female exhaust ange (4)

N°2 - 90° bend Ø 80 (5)

N°1 - Intake terminal Ø 80 (6)

N°2 - Internal white wall sealing plates (7)

N°1 - External grey wall sealing ring (8)

N°1 - Exhaust pipe Ø 80 (9)

Maximum usable length

(including intake terminal with grill and two 90° bends)

NON INSULATED PIPE INSULATED PIPE

Exhaust (m) Intake (m) Exhaust (m) Intake (m)

1 36,0* 6 29,5*

2 34,5* 7 28,0*

3 33,0* 8 26,5*

4 32,0* 9 25,5*

5 30,5* 10 24,0*

* e air intake pipe can be increased to 2.5 metres if the exhaust bend is

eliminated, 2 metres if the air intake bend is eliminated, and 4.5 metres

eliminating both bends.

11 22,5*

12 21,5*

Important: the boiler was designed to evacuate

combustion product up to a maximum extension

of 27 linear m to the exhaust, with 1 m plus 90°

bend at intake. If installation requires an exten-

sion of the ue ttings up to the exhaust that

exceeds the 12 m recommended, it is necessary

to properly consider the possibility that conden-

sation may form inside the duct and therefore

Immergas “Serie Blu” insulated ue ttings, or

other ue ttings with similar characteristics,

should be used.

1-30

1-31

1-29

5678

10 11 9

C82

C82C82

12 - IE

INSTALLATORUSERTECHNICIAN

Insulated separator kit Ø 80/80. Kit assembly

(Fig. 1-29): install ange (4) on the central hole

of the boiler, tting gasket (1) and tighten with

the at-tipped hex screws included in the kit.

Remove the at ange present in the lateral hole

with respect to the central one (according to ne-

eds) and replace it with the ange (3), positioning

the gasket (2) already present in the boiler and

tighten using the supplied self-threading screws.

Insert and slide cap (6) onto bend (5) from the

male side (smooth), and join bends (5) with the

male side (smooth) in the female side of ange

(3). Fit bend (11) with the male side (smooth)

into the female side of ange (4). Fit the male

end (smooth) of the intake terminal (7) up to the

stop on the female end of the bend (5), making

sure you have already inserted the wall sealing

plates (8 and 9) that ensure correct installation

between pipe and wall, then x the closing cap

(6) on the terminal (7). Join the exhaust pipe (10)

with the male side (smooth) in the female side

of the bend (11) to the end stop, ensuring that

the wall sealing plate (8) is already inserted for

correct installation between the pipe and ue.

• Coupling extension pipes and elbows.

To snap-t extensions with other elements of

the fume extraction elements, operate as fol-

lows: Install the concentric pipe or elbow with

the male side (smooth) on the female section

(with lip seal) to the end stop on the previously

installed element. is will ensure sealing and

joining of the elements correctly.

• Insulation of separator terminal kit. In case of

problems of fume condensate in the exhaust pi-

pes or on the outside of intake pipes, Immergas

supplies insulated intake and exhaust pipes on

request. Insulation may be necessary on the

exhaust pipe due to excessive temperature loss

of fumes during conveyance. Insulation may be

necessary on the intake pipe as the air entering

(if very cold) may cause the outside of the pipe

to fall below the dew point of the environmen-

tal air. e gures (Fig. 1-29 and 1-30) illustrate

dierent applications of insulated pipes.

Insulated pipes are formed of a Ø 80 internal

concentric pipe and a Ø 125 external pipe with

static air space. It is not technically possible

to start with both Ø 80 elbows insulated, as

clearances will not allow it. However starting

with an insulated elbow is possible by choosing

either the intake or exhaust pipe. When star-

ting with an insulated intake bend, it must be

inserted onto its ange up to the stop on the

fume exhaust ange, which will ensure that the

two intake and exhaust outlets are at the same

height.

• Temperature loss in insulated fume ducting.

To prevent problems of fume condensate in

the exhaust pipe Ø 80, due to fume cooling

through the wall, the length of the pipe must

be limited to 12 m. e gure (Fig. 1-31) illu-

strates a typical insulation application in which

the intake pipe is short and the exhaust pipe is

very long (over 5 m). e entire intake pipe is

insulated to prevent moist air in the place where

the boiler is installed, in contact with the pipe

cooled by air entering from the outside. e

entire exhaust pipe, except the elbow leaving

the splitter is insulated to reduce heat loss from

the pipe, thus preventing the formation of fume

condensate.

N.B.: When installing the ducts, a section

clamp with pin must be installed every 2 me-

tres.

• Conguration type B, open chamber and

forced draught.

When using type B installation conguration

indoors, it is compulsory to install the relative up-

per cover kit along with the fumes discharge kit.

e air intake comes directly from the area where

the boiler is installed and from the ue exhaust

in each single ue or directly from outdoors.

e boiler in this conguration, following the

assembly instructions on pages 8 and 9, is clas-

sied as type B.

With this conguration:

- air intake takes place directly from the environ-

ment in which the boiler is installed and only

functions in permanently ventilated rooms;

- the ue exhaust must be connected to its own

individual ue or channelled directly into the

external atmosphere.

- 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 nes, cement, etc.), which may be dama-

ging for the components of the appliance and

jeopardise functioning.

When using type B installation conguration

indoors, it is compulsory to install the relative up-

per cover kit along with the fumes discharge kit.

The technical regulations in force must be

respected.

e kit includes:

N°1 - Exhaust gasket (1)

N°1 - Flange seal (2)

N°1 - Female intake ange (3)

N°1 - Female exhaust ange (4)

N°1 - Bend 90° Ø 80 (5)

N°1 - Pipe closure cap (6)

N°1 - Intake terminal Ø 80 insulated (7)

N°2 - Internal white wall sealing plates (8)

N°1 - External grey wall sealing plate (9)

N°1 - Discharge pipe Ø 80 insulated (10)

N°1 - Concentric bend 90° Ø 80/125 (11)

1-32

13 - IE

INSTALLATORUSERTECHNICIAN

1.11 FUME EXHAUST TO FLUE/

CHIMNEY.

Flue exhaust does not necessarily have to be con-

nected to a branched type traditional ue. Flue

exhaust can be connected to a special LAS type

multiple ue. Multiple and combined ues must

be specially designed according to the calculation

method and requirements of the standards, by

professionally qualified technical personnel.

Chimney or ue sections for connection of the

exhaust pipe must comply with requisites of

technical standards in force.

1.12 DUCTING OF EXISTING FLUES.

With a specic “ducting system” it is possible

to reuse existing ues, chimneys and technical

openings to discharge the boiler fumes. Ducting

requires the use of ducts declared to be suitable

for the purpose by the manufacturer. Follow the

installation and user instructions provided by the

manufacturer and the requirements of standards.

1.13 FLUES, CHIMNEYS AND CHIMNEY

CAPS.

e ues, chimneys and chimney caps for the

evacuation of combustion products must be in

compliance with applicable standards.

Positioning the dra terminals. Dra termi-

nals must:

- be installed on external perimeter walls of the

building;

- be positioned according to the minimum di-

stances specied in current technical standards.

Fume exhaust of forced draught appliances in

closed open-top environments. In spaces clo-

sed on all sides with open tops (ventilation pits,

courtyards etc.), direct fume exhaust is allowed

for natural or forced draught gas appliances with

a heating power range from 4 to 35 kW, provi-

ded the conditions as per the current technical

standards are respected.

1.14 SYSTEM FILLING.

Once the boiler is connected, proceed with

system filling via the filling valve (Fig. 2-2).

Filling is performed at low speed to en-

sure release of air bubbles in the wa-

ter via the boiler and heating system vents.

The boiler has a built-in automatic ven-

ting valve on the circulator. Open the ra-

diator air vent valves. Close radiator vent

valves only when water escapes from them.

Close the lling valve when the boiler manometer

indicates approx. 1.2 bar.

N.B.: during these operations turn on the circula-

tion pump at intervals, by means of the stand-by/

summer winter switch positioned on the control

panel. Vent the circulation pump by loosening the

front cap and keeping the motor running.

Tighten the cap aerwards.

1.15 GAS SYSTEM STARTUP.

To start up the system proceed as follows:

- open windows and doors;

- avoid presence of sparks or naked ames;

- bleed all air from pipelines;

- check that the internal system is properly sealed

according to specications.

1.16 BOILER START UP IGNITION.

For issue of the Declaration of Conformity pro-

vided for by Italian Law, the following must be

performed for boiler start-up:

- check that the internal system is properly sealed

according to specications;

- ensure that the type of gas used corresponds to

boiler settings;

- switch the boiler on and ensure correct ignition;

- make sure that the gas ow rate and relevant

pressure values comply with those given in the

manual (parag. 3.17);

- 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 concentric intake-exhaust ter-

minal (if tted) is not blocked.

e boiler must not be started up in the event of

failure to comply with any of the above.

N.B.: the initial check of the boiler must be perfor-

med by a qualied technician. e conventional

warranty of the boiler comes into eect from the

date of the check itself. e initial check certicate

and warranty are issued to the user.

1.17 CIRCULATION PUMP.

Eolo Star 24 3 E Range boilers are supplied with a

built-in circulation pump with 3-position electric

speed control. e boiler does not operate cor-

rectly with the circulation pump on rst speed.

To ensure optimal boiler operation, in the case

of new systems (single pipe and module) it is

recommended to use the circulation pump at

maximum speed. e circulation pump is already

tted with a capacitor.

Pump release. If, aer a prolonged period of

inactivity, the circulation pump is blocked,

unscrew the front cap and turn the motor sha

using a screwdriver. Take great care during this

operation to avoid damage to the motor.

By-pass regulation (part. 24 Fig. 1-33). If neces-

sary, the by-pass can be regulated according to

plant requirements from a minimum (by-pass

excluded) to a maximum (by-pass inserted)

represented by the following graphics (Fig. 1-32).

Make the regulation using a at head screwdriver,

turn clockwise and insert the by-pass, anti-

clockwise it is excluded.

Head (m H2O)

Flow rate (l/h)

Head (kPa)

Total head available to the plant.

A = Head available to the system

at maximum speed with by-

pass excluded.

B = Head available to the system

at maximum speed with by-

pass inserted.

C = Head available to the system

at second speed with by-pass

excluded.

D = Head available to the system

at second speed with by-pass

inserted.

14 - IE

INSTALLATORUSERTECHNICIAN

1.19 BOILER COMPONENTS.

Key:

1 - Sample points (air A) - (fumes F)

2 - Sealed chamber

3 - Fan

4 - Combustion chamber

5 - Domestic hot water ow switch

6 - Gas valve

7 - Domestic hot water probe

8 - System lling cock

9 - Positive signal pressure point

10 - Negative signal pressure point

11 - Fumes pressure switch

12 - Safety thermostat

13 - Fumes hood

14 - Delivery probe

15 - Rapid heat exchanger

16 - Ignition and detection electrodes

17 - System expansion vessel

18 - Burner

19 - System pressure switch

20 - Air vent valve

21 - Boiler circulating pump

22 - Manifold

23 - System drain cock

24 - By-pass

25 - 3 bar safety valve

N.B.: connection group (optional)

1.18 KITS AVAILABLE ON REQUEST.

• System shut o valves kit. e boiler is desig-

ned for installation of system shut o valves to

be placed on delivery and return pipes of the

connection assembly. is kit is particularly

useful for maintenance as it allows the boiler to

be drained separately without having to empty

the entire system.

• a) Polyphosphate dispenser kit for wall instal-

lation.

• b) Polyphosphate dispenser kit for installation

with recess frame.

e polyphosphate dispenser reduces the for-

mation of lime-scale and preserves the original

heat exchange and domestic hot production

water conditions. e boiler is prepared for

application of the polyphosphate dispenser kit.

• Covering kit. For outdoor installations, in

partially protected areas and with direct air

intake, the top protection cover must be tted

for a correct functioning of the boiler and to

protect it from storms (Fig. 1-8). For indoor

installations, type B conguration, a suitable

top protection cover coupled with the flue

exhaust kit must be tted.

• Anti freeze kit with resistance (on request). If

the boiler is installed in a place where the tem-

perature falls below -5°C and in the event there

is no gas, the appliance can freeze. To prevent

freezing of the domestic hot water system, an

anti freeze kit with an electrical resistance can

be tted from the relative cable and from a

control thermostat.

• Installation kit with recess frame. Using a

suitable recess frame, it is possible to t the

boiler inside the wall, conguration type C, or

with direct outdoor air intake, thanks to the

ventilated recess frame.

• a)- Attachment kit for wall installation.

• b)- Attachment kit for recess boiler.

e kit includes pipes, ttings and cocks (inclu-

ding gas cock) for the connection of the boiler

to the system and 4 spacers to be used under

the side plugs of the sealed chamber (the plugs

are recess type).

N.B.: for recess tting, using the same kit (b),

it is possible to carry out front installation or

back installation exiting the recess frame.

e above-mentioned kits are supplied complete

with instructions for assembly and use.

2-1

15 - IE

INSTALLATORUSERTECHNICIAN

2INSTRUCTIONS FOR USE

AND MAINTENANCE.

2.1 CLEANING AND MAINTENANCE.

Important: the heating plants must undergo

periodical maintenance (regarding this, see in

the section dedicated to the technician, relative

to “yearly control and maintenance of the ap-

pliance”) and regular checks of energy eciency

in compliance with national, regional or local

provisions in force. is ensures that the optimal

safety, performance and operation characteristics

of the boiler remain unchanged over time.

We recommend stipulating a yearly cleaning and

maintenance contract with your zone technician.

2.2 GENERAL WARNINGS.

Never expose the suspended boiler to direct

vapours from a cooking surface.

Use of the boiler by unskilled persons or children

is strictly prohibited.

Do not touch the fumes exhaust terminal (if

present) due to the high temperature it reaches;

For safety purposes, check that the concentric

air intake/flue exhaust terminal (if fitted), is

not blocked.

If temporary shutdown of the boiler is required,

proceed as follows:

a) drain the heating system if anti-freeze is not

used;

b) shut-o all electrical, water and gas supplies.

In the case of work or maintenance to structu-

res located in the vicinity of ducting or devi-

ces for flue extraction and relative accessories,

switch off the appliance and on completion of

operations ensure that a qualified technician

checks eciency of the ducting or other devices.

Never clean the appliance or connec-

ted parts with easily flammable substances.

Never leave containers or ammable substances in

the same environment as the appliance.

• Important: the use of components involving

use of electrical power requires some funda-

mental rules to be observed:

- do not touch the appliance with wet or moist

parts of the body; do not touch when barefoot;

- never pull electrical cables or leave the ap-

pliance exposed to atmospheric agents (rain,

sunlight, etc.);

- the appliance power cable must not be replaced

by the user;

- in the event of damage to the cable, switch o

the appliance and contact exclusively qualied

sta for replacement;

- if the appliance is not to be used for a certain

period, disconnect the main power switch.

2.3 CONTROL PANEL.

Key:

1 - Reset key

2 - Stand-by key/ summer / winter

3 - Key (+) to increase the domestic hot water

temperature

4 - Key (-) to reduce the domestic hot water

temperature

5 - Key (+) to increase the system water

temperature

6 - Key (-) to reduce the system water

temperature

7 - Boiler manometer

8 - Domestic hot water function

9 - Temperature and error code display

10 - Unit of measurement

11 - Heating mode

12 - Winter

13 - Summer

14 - Output eciency

15 - Flame presence

16 - IE

INSTALLATORUSERTECHNICIAN

Ignition of the boiler (Fig. 2-1). Before ignition,

make sure the heating system is lled with water

and that the manometer (7) indicates a pressure

of 1 ÷ 1.2 bar.

- Open the gas cock upstream from the boiler.

- Press key (2) and select the summer position

or winter ( ) position of the boiler ( ).

When in summer position( ) the domestic

hot water temperature is regulated by keys (3-4).

When in winter position ( ) the system water

temperature is regulated by keys (5-6) whilst the

regulation of the domestic hot water temperature

is regulated using keys (3-4), pressing (+) to

increase and (-) to reduce.

From this moment the boiler functions auto-

matically. With no demand for heat (heating or

domestic hot water production) the boiler goes

to “standby” function, equivalent to the boiler

being powered without presence of ame. Each

time the boiler ignites, the relative ame present

symbol is displayed (15).

2.4 FAULT AND ANOMALY SIGNALS.

e boiler signals out anomalies by ashing on

the display and relative error codes, listed on the

table, are displayed.

Anomaly signalled

code

displayed

(ashing)

Ignition block 01

Safety thermostat block (over-

temperature), ame control

anomaly

Electro-mechanical contacts 04

Delivery probe anomaly 05

Domestic hot water probe

anomaly 06

Insucient system pressure 10

Fumes pressure switch failure 11

Parasite ame 20

Insucient circulation 27

Extruder presence 28

Communication loss with

CRD 31

Ignition block. e boiler ignites automatically

with each demand for room heating or hot

water production. If this does not occur within

10 seconds, the boiler goes into ignition block

(code 01). To eliminate “ignition block” the Reset

button (1) must be pressed. On commissioning

or aer extended inactivity it may be necessary

to eliminate the “ignition block”. If this pheno-

menon occurs frequently, contact a qualied

technician for assistance (e.g. Immergas Aer-

Sales Technical Assistance Service).

Over temperature thermostat block. During

normal functioning, if a fault causes excessive

overheating internally, the boiler goes into over

temperature block (code 02). Aer allowing to

cool, eliminate the “overtemperature block” by

pressing the Reset key (1). If this phenomenon

occurs frequently, contact a qualied technician

for assistance (e.g. Immergas Aer-Sales Tech-

nical Assistance Service).

Electro-mechanical contacts is occurs when

the safety thermostat, the fume pressure switch or

the system pressure switch do not work properly

(code 04). Try resetting the boiler. If the anomaly

continues contact a qualified technician for

assistance (e.g. Immergas Aer-Sales Technical

Assistance Service).

Delivery probe anomaly If the board detects an

anomaly on the delivery probe (code 05), the boi-

ler will not start; contact a qualied technician for

assistance (e.g. Immergas Aer-Sales Technical

Assistance Service).

Domestic hot water probe anomaly. If the board

detects an anomaly on the delivery probe (code

06), the boiler will not start; contact a qualied

technician for assistance (e.g. Immergas Aer-

Sales Technical Assistance Service).

Insucient system pressure. Water pressure

inside the heating system (code 10), sucient to

guarantee the correct functioning of the boiler,

is not detected. Check that the system pressure

is between 1÷1.2 bar.

Fumes pressure switch failure. is occurs if the

intake or exhaust pipes are blocked or in case of

a fan fault (code 11). If normal conditions are

restored the boiler restarts without having to be

reset. If this anomaly persists, contact a qualied

technician for assistance (e.g. Immergas Aer-

Sales Technical Assistance Service.)

Parasite ame. is occurs in case of a leak on

the detection circuit or anomaly in the ame

control unit. (code 20), try to reset the boiler.

If the anomaly continues contact a qualified

technician (e.g. Immergas Aer-Sales Technical

Assistance Service).

Insucient water circulation. is occurs if

there is overheating in the boiler due to insuf-

cient water circulating in the primary circuit

(code 27); the causes can be:

- low circulation; check that no shut o devices

are closed on the heating circuit and that the

system is free of air (deaerated);

- circulating pump blocked; free the circulating

pump.

If this phenomenon occurs frequently, contact a

qualied technician for assistance (e.g. Immergas

Aer-Sales Technical Service).

Domestic hot water extruder circuit. If during

the heating phase, a rise in domestic hot water

temperature occurs, an anomaly is signalled (code

28) and heating temperature is reduced to limit

the formation of lime scale in the heat exchanger.

Check that all domestic hot water system cocks

are closed and are not drawing and check also

that there are no leaks in the system. Once good

conditions are restored in the domestic hot water

system, the boiler returns to normal functioning.

If this anomaly persists, contact a qualied tech-

nician for assistance (e.g. Immergas Aer-Sales

Technical Assistance Service).

Loss of Digital Remote Control communica-

tion. is occurs 1 minute aer communication

loss between the boiler and the CRD (code 31).

To reset the error code, remove and re-apply

power to the boiler. If this phenomenon occurs

frequently, contact a qualied technician for

assistance (e.g. Immergas Aer-Sales Technical

Assistance Service).

Boiler shutdown Press key (2 Fig. 2-1) (

) until the following symbol appears

().

N.B.: in these conditions the boiler is considered

still powered.

Disconnect the external omnipolar boiler switch

and close the gas cock upstream of the appliance.

Never leave the boiler switched on if le unused

for prolonged periods.

2.5 RESTORE HEATING SYSTEM

PRESSURE.

Periodically check the system water pressure.

e boiler pressure gauge should read a pressure

between 1 and 1.2 bar.

If the pressure is below 1 bar (with the circuit cool)

restore normal pressure via the cock located in the

lower part of the boiler (Fig. 2-2).

N.B.: close the cock aer the operation.

If pressure values reach around 3 bar

the safety valve may be activated.

In this case contact a professional technician

for assistance.

In the event of frequent pressure drops, contact

qualified staff for assistance to eliminate the

possible system leakage.

2.6 DRAINING THE SYSTEM.

To drain the boiler, use the special drain cock

(Fig. 1-33).

Before draining, ensure that the lling cock is

closed.

2.7 ANTIFREEZE PROTECTION.

e boiler is supplied with an antifreeze function

as per standard that activates the function of the

pump and the burner when the internal system

water temperature in the boiler falls below 4 °C

(protection range to a minimum temperature

of -5°C) and stops when it exceeds 42°C. e

antifreeze function is guaranteed if the boiler

is fully operative, is not in “block” status and is

electrically powered. To avoid keeping the system

switched on in case of a prolonged absence, the

system must be drained completely or antifreeze

substances must be added to the heating system

water. In both cases the boiler domestic hot water

circuit must be drained. In systems that are drai-

ned frequently, lling must be carried out with

suitably treated water to eliminate hardness that

can cause lime-scale.

All information relative to the anti-freeze protec-

tion is stated in Par. 1.4. In order to guarantee the

integrity of the appliance and the domestic hot

water heating system in zones where the tempera-

ture falls below zero, we recommend the heating

system is protected using anti-freeze liquid and

installation of the Immergas Anti-freeze Kit in

the boiler (Par. 1.4). In the case of prolonged

inactivity (second case), we also recommend that:

- disconnect the electric power supply;

- drain completely the boiler domestic hot water

circuit using the exhaust valves provided (Fig.

1-33) and the internal domestic hot water

system.

2-2

17 - IE

INSTALLATORUSERTECHNICIAN

2.8 CASE CLEANING.

Use damp cloths and neutral detergent to clean

the boiler casing. Never use abrasive or powder

detergents.

2.9 DECOMISSIONING.

In the event of permanent shutdown of the boiler,

contact professional sta for the procedures and

ensure that the electrical, water and gas supply

lines are shut o and disconnected.

Key:

1 - Filling valve

2 - Draining valve

Bottom view.

3-1

18 - IE

INSTALLATORUSERTECHNICIAN

3BOILER STARTUP.

INITIAL CHECK

To commission the boiler:

- ensure that the declaration of conformity of

installation is supplied with the appliance;

- ensure that the type of gas used corresponds to

boiler settings;

- check connection to a 230V-50Hz power

mains, correct L-N polarity and the earthing

connection;

- make sure the heating system is lled with wa-

ter 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 deaerated;

- switch the boiler on and ensure correct ignition;

- make sure the gas maximum, medium and

minimum flow rate and pressure values

correspond to those given in the handbook

(Paragraph 3.17);

- 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

upstream from the boiler;

- check that the intake and/or exhaust terminals

are not blocked;

- check activation of the “no air” safety pressure

switch;

- ensure activation of all adjustment devices;

- seal the gas ow rate regulation devices (if

settings are modied);

- ensure production of domestic hot water;

- ensure sealing eciency of water circuits;

- check ventilation and/or aeration of the instal-

lation room where provided.

If any checks/inspection relative to safety give

negative results, do not start the system.

3.1 HYDRAULIC LAYOUT.

Key:

1 - Domestic hot water probe

2 - Domestic hot water ow switch

3 - Gas valve

4 - Flow limiter

5 - System draining valve

6 - Burner

7 - Rapid heat exchanger

8 - Fan

9 - Sealed chamber

10 - Fumes pressure switch

11 - Fumes hood

12 - System expansion vessel

13 - Delivery probe

14 - Safety thermostat

15 - Air vent valve

16 - Boiler circulating pump

17 - System pressure switch;

18 - By-pass

19 - 3 bar safety valve

20 - System lling valve

G - Gas supply

AC - Domestic hot water outlet

AF - Domestic hot water inlet

R - System return

M - System delivery

3-2

10

1

3

2

4

10

11

19 - IE

INSTALLATORUSERTECHNICIAN

Key:

B1 - Delivery probe

B2 - Domestic hot water probe

DRC - Digital Remote Control (optional)

DS1 - Display

E3 - Ignition and detection electrodes

E4 - Safety thermostat

F1 - Phase fuse

F2 - Neutral fuse

3.2 WIRING DIAGRAM.

e boiler is designed for application of a room

thermostat (S20), an On/O room chronother-

mostat, a program timer or a Digital Remote

Control (DRC). Connect it to clamps 40 –41

eliminating jumper X40.

3.3 TROUBLESHOOTING.

N.B.: maintenance interventions must be carried

out by a qualified technician (e.g. Immergas

Aer-Sales Technical Assistance Service).

- Smell of gas. Caused by leakage from gas circuit

pipelines. Check sealing eciency of gas intake

circuit.

- e fan works but ignition discharge does not

occur on the burner ramp. e fan may start

but the safety air pressure switch does not

switch the contact over. Make sure:

1) the intake-exhaust duct is not too long (over

allowed length).

2) the intake-exhaust pipe is not partially blo-

cked (on the exhaust or intake side).

3) the diaphragm of the fume exhaust is adequa-

te for the length of the intake-exhaust duct.

4) that the sealed chamber is kept in good condi-

tions.

5) the fan power supply voltage is not less than 196

- Irregular combustion (red or yellow ame).

is may be caused by: dirty burner, incorrect

combustion parameters, intake - exhaust ter-

minal not correctly installed. Clean the above

components and ensure correct installation of

the terminal.

- Frequent activation of the temperature over-

load thermostat. is may be caused by lack

of water in the boiler, insucient water circu-

lation in the circuit, a blocked circulator or an

anomaly of the boiler adjustment board. Check

on the manometer that the system pressure is

within established limits. Check that radiator

valves are not all closed.

- Presence of air in the system. Check opening of

the special air bleeding cap (Fig. 1-33). Make

sure the system pressure and expansion vessel

pre-charge values are within the set limits; the

pre-charge value for the expansion vessel must

be 1.0 bar, and system pressure between 1 and

1.2 bar.

- Ignition block paragraph 2.4 and 1.5 (electric

connections).

- Low water ow: if, as a result of lime scale (cal-

cium and magnesium), the domestic hot water

system does not work properly contact a qua-

lied technician for descaling e.g. Immergas

Aer-Sales Technical Service. Descaling must

be carried out on the domestic hot water side

of the bithermal heat exchanger in accordance

with good practice. To preserve integrity and

eciency of the heat exchanger, a non corro-

sive descaler must be used. Cleaning must be

carried out without the use of tools which can

damage the heat exchanger.

3.4 CONVERTING THE BOILER TO

OTHER TYPES OF GAS.

If the boiler has to be converted to a dierent gas

type to that specied on the data plate, request

the relative conversion kit for quick and easy

conversion.

Boiler conversion must be carried out by a

qualied technician (e.g. Immergas Aer-Sales

Technical Assistance Service).

To convert to another type of gas the following

operations are required:

- remove the voltage from the appliance;

- replace the main burner injectors, making sure

to insert the special seal rings supplied in the

kit, between the gas manifold and the injectors.

- apply voltage to the appliance;

- select, using the boiler key, the gas parameter

type (P1) and select (nG) in the case of methane

supply or (LG) in the case of LPG supply;

- adjust the boiler nominal heat output;

- adjust the boiler nominal heat output in dome-

stic hot water phase;

- adjust the boiler nominal heat output in heating

phase;

- adjust (eventually) the maximum heating

power;

- seal the gas ow rate devices (if adjusted);

- aer completing conversion, apply the sticker,

present in the conversion kit, near the data-

plate. Using an indelible marker pen, cancel

the data relative to the old type of gas.

ese adjustments must be made with reference

to the type of gas used, following that given in

the table (Parag. 3.17).

M1 - Boiler circulating pump

M20 - Fan

S2 - Selector switch functioning

S3 - Reset block keys

S4 - Domestic hot water ow switch

S5 - System pressure switch;

S6 - Fumes pressure switch

S20 - Room thermostat (optional)

S21 - Domestic hot water temperature

increase key

S22 - Domestic hot water temperature

decrease key

S23 - Heating temperature increase key

S24 - Heating temperature decrease key

T1 - Switch-on transformer

T2 - Boiler board transformer

U1 - Rectier inside the gas valve

connector (Only available on

Honeywell gas valves)

X40 - Room thermostat jumper

Y1 - Gas valve

Y2 - Gas valve modulator

1 - User interface

2 - N.B.: e user interface is on the

welding side of the boiler board

3 - e X6 connector is used for

automatic inspection

4 - 230 Vac 50Hz power supply

5 - Blue

6 - Brown

7 - Yellow/Green

8 - Black

9 - Grey

10 - White

11 - Red

3-3

20 - IE

INSTALLATORUSERTECHNICIAN

3.5 CHECKS FOLLOWING

CONVERSION TO ANOTHER TYPE

OF GAS.

Aer making sure that conversion was carried

out with a nozzle of suitable diameter for the

type of gas used and the settings are made at the

correct pressure, check that:

- there is no ame in the combustion chamber;

- the burner ame is not too high or low and that

it is stable (does not detach from burner);

- the pressure testers used for calibration are

perfectly closed and there are no leaks from

the gas circuit.

N.B.: all boiler adjustment operations must

be carried out by a qualied technician (e.g.

Immergas After-Sales Technical Assistance).

Burner adjustment must be carried out using

a dierential “U” or digital type pressure gauge

located above the sealed chamber (part. 9 Fig.

1-33) and the gas valve pressure outlet (part. 4

Fig. 3-3), keeping to the pressure value given in

the table (Par. 3.17) according to the type of gas

for which the boiler is prepared.

3.6 POSSIBLE ADJUSTMENTS.

• Adjustment of boiler nominal thermal heat

output.

- Press the (+) key to adjust the domestic hot

water temperature (3 Fig. 2-1) up to the maxi-

mum temperature function.

- Open the domestic hot water cock in order to

prevent modulation intervention.

- Adjust the boiler nominal power on the brass

nut (3 Fig. 3.3), keeping to the maximum

pressure values stated in the tables (Par. 3.17)

depending on the type of gas.

- By turning in a clockwise direction the heating

potential increases and in an anti-clockwise

direction it decreases.

• Adjust the boiler minimum heat input in the

domestic hot water phase (Fig. 3-3).

N.B.: only proceed aer having calibrated the

nominal pressure.

To adjust the minimum thermal output in do-

mestic hot water phase, turn the nut (2) located

on the gas valve blocking the brass nut (3);

- disconnect the power supply to the modulating

coil (just disconnect a fasten); By turning the

screw in a clockwise direction, the pressure

increases, in an anti-clockwise direction it de-

creases. On completion of calibration, re-apply

the power supply to the modulating coil. e

pressure, to which the boiler minimum power

must be adjusted, must not be lower than that

stated in the tables (Par. 3.17) depending on

the type of gas.

N.B.: to adjust the gas valve, remove the plastic

cap (6); aer adjusting, ret the cap.

• Adjustment of the boiler minimum heat output

in heating phase.

N.B.: only proceed aer having calibrated the

minimum domestic hot water pressure.

To adjust the minimum heat output during the

heating phase, change parameter (5), increasing

the value the pressure increases, reducing it the

pressure drops.

- e pressure to which the boiler minimum heat

output must be adjusted must not be lower than

that stated in the tables (Parag. 3.17).

3.7 PROGRAMMING THE P.C.B

e Eolo Star 24 3 E boiler is prepared for possible

programming of several functioning parameters. By

modifying these parameters as described below, the

boiler can be adapted according to specic needs.

To access the programming phase, proceed as

follows:

- press keys (1) and (2) at the same time for

approximately 15 seconds;

- Using keys (3) and (4), select the parameter to

be changed indicated in the following table:

List of

parame-

ters

Description

P0 Select solar panels

P1 Select gas type

P2 select special gas type G110

P3 Activate anti extruder function

P4 Activate domestic hot water

post circulation

P5 Minimum heating power

P6 Maximum heating power

P7 Heating ignition timer

P8 Heating ramp timer

- adjust the corresponding value consulting the

table using keys (5) and (6);

- conrm the set value pressing the reset key

(1) for approximately 5 seconds; pressing keys

(3) + and (4) - at the same time to adjust the

domestic hot water temperature, the operation

is cancelled.

N.B.: aer a period of time, without touching

any keys, the operation cancels automatically.

Select solar panels By selecting this function, the

boiler is set to be used with solar panels. Setting

parameter P0 at on “solar”, the switching o of

the burner is connected to the adjustment of the

domestic hot water temperature. In OFF mode,

the burner is switched o at maximum value.

N.B.: together with a solar valve kit, set the

parameter P0 at on “solar” mode (correlated).

Select solar panels

Range of values which can

be set Parameter

on "solar" - oF (Standard

settings) P0

Select gas type e setting of this function is used

to adjust the boiler in order to function with LPG

gas or Methane gas.

Select gas type

Range of values which can

be set Parameter

LG (GPL) o nG (Metano)

(Standard settings) P1

Town Gas G110 – Industrial gas. e setting

of this function is used to adjust the boiler in

order to function with gases from the rst family.

Town Gas G110 - Industrial gas (rst family

gas)

Range of values which can

be set Parameter

on - oF (Standard setting) P2

SIT 845 GAS valve

Key:

1 - Coil

2 - Minimum power adjustment nut

3 - Maximum power adjustment nut

4 - Gas valve outlet pressure point

5 - Gas valve inlet pressure point

6 - Protection hood

VK 4105 M GAS valve

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Immergas EOLO STAR 24 3 E User manual

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