Eolo Mini User Manual.pdf

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EOLO MiniWall-hung instant room-sealed fanassisted boilers (type C)

Users Manual

InstallerUserTechnician

Dear Customer,Congratulations on your purchase of a high quality Immergas product designed to ensure pro-longed comfort and safety. As an Immergas customer you can count on a professional AuthorisedService Centre, professional personnel to guarantee constant efficiency of your boiler.

Read the following pages carefully as they contain important information on the correct use of yourboiler, observe all instructions to make the most of Immergas products.

Contact our local Authorised Service Centre as soon as possible to request the preliminary test(required to validate the guarantee). Our technician will verify correct operating conditions, makethe necessary adjustments and will show you how to use the appliance correctly.

In the event of problems or maintenance requirements, contact our Authorised Service Centre toensure use of original spare parts and professional service.

General warnings

This instruction booklet is considered an integral part of the product and must be delivered to theuser with the appliance.

Store the booklet in a safe place and read carefully before using the appliance as it containsimportant information to ensure safe installation operation and maintenance.

Installation and maintenance must be performed in compliance with current standards accordingto the manufacturers instructions and by qualified personnel'.

Incorrect installation can cause damage or physical injury and the manufacturer declines all liabilityfor failure to observe instructions and standards. Maintenance must be performed by qualifiedpersonnel. In this case, an Authorised Immergas Service Centre represents a guarantee ofprofessional and qualified services.

The appliance must be used according to the applications as specified in design. Any other use isconsidered improper and therefore hazardous.

The manufacturer declines all contractual or non-contractual liability for damage caused by incorrectinstallation or operation and failure to observe relative instructions.

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

1.1 Warnings. .................................................................................................................................................3

1.2 Main dimensions. .....................................................................................................................................3

1.3 Connection unit (supplied as standards with the boiler). .........................................................................4

1.4 Installing air intake and flue exhaust terminals. .......................................................................................5

1.5 Flue exhaust via flues. ...........................................................................................................................13

1.7 System filling. .........................................................................................................................................14

1.8 Gas system start-up. ..............................................................................................................................14

1.9 Boiler start-up (ignition). .........................................................................................................................15

1.10 Circulation pump. ...................................................................................................................................15

1.11 Kits available on request. ....................................................................................................................... 16

1.12 Eolo Mini boiler components. .................................................................................................................16

2 Operation and maintenance instructions ...............................................................................................17

2.1 Preliminary testing free-of charge. ......................................................................................................... 17

2.2 Cleaning and Maintenance. ...................................................................................................................17

2.3 General Warnings. .................................................................................................................................17

2.4 Eolo Mini - Control Panel. ......................................................................................................................17

2.5 Heating system pressure. ......................................................................................................................18

2.6 Draining the system. ..............................................................................................................................18

2.7 Anti-freeze protection. ............................................................................................................................ 18

2.8 Casing cleaning. .................................................................................................................................... 19

2.9 Decommissioning. ..................................................................................................................................19

3 Boiler start-up (preliminary testing) ........................................................................................................20

3.1 Eolo Mini electrical circuit diagram. ........................................................................................................20

3.2 Electronic card function options. ............................................................................................................20

3.3 Eolo Mini hydraulic circuit diagram. .......................................................................................................21

3.4 Troubleshooting. .................................................................................................................................... 21

3.5 Converting the boiler to other types of gas. ...........................................................................................21

3.6 Checks following conversion to other type of gas. .................................................................................22

3.7 Eolo Mini adjustments (when required). .................................................................................................22

3.8 Adjustment of Eolo Mini boiler slow ignition. ..........................................................................................22

3.9 Casing disassembly. ..............................................................................................................................23

3.10 Annual appliance maintenance. .............................................................................................................24

3.11 Eolo Mini variable heating power. .......................................................................................................... 24

3.12 Eolo Mini technical specifications. ......................................................................................................... 25

Immergas S.p.A. declines any responsibility for printing or writing errors, and reserves the right to alter commercial

and technical specifications without prior notice.

INSTALLER pag.

USER pag.

TECHNICIAN pag.

INDEX

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The wall surface must be smooth, without any pro-

trusions or dents that may enable access to the

rear section. Boilers must NOT be installed on

bases or floors (see figure).

Caution: installation of the boiler on the wall mustguarantee a stable and efficient support for the gen-

erator. The plugs supplied with the appliance ensure

adequate support only if inserted correctly (accord-

ing to technical standards) in walls comprising bricks

or breeze blocks, partitions with limited static prop-

erties, or other provided that a static test is performed

to ensure adequate support.

These boilers are used to heat water to below boil-

ing temperature in atmospheric pressure.

The appliance must be connected to a heating cir-

cuit and domestic water distribution circuit in corre-

spondence to performance and power specifications.

It must also be installed in an ambient temperature

that does not fall below 0C, and must not be ex-

posed to atmospheric agents.

1.2 Main dimensions.

Key:G - Gas supplyU - Hot domestic water outletE - Domestic water inletR - System returnM - System deliveryV - Electrical connection

)mm(thgieH )mm(htdiW )mm(htpeD397 054 052

sgnilpuoC

SAG CITSEMOD RETAW GNITAEH

G U E R M

"2/1 "2/1 "2/1 "4/3 "4/3

1BOILERINSTALLATION1.1 Warnings.Immergas gas appliances must be installed exclu-

sively by a professionally qualified and authorised

technician.

Installation must be performed in compliance with

standards UNI and CEI, current legislation and in

observance with local technical standards accord-

ing to a professional code of practice.

The following standards must be observed in par-

ticular: UNI-CIG 7129 and 7131 and CEI 64-8 and

64-9.

Before installing the appliance, ensure that it is de-

livered in perfect condition; if in doubt, contact the

supplier immediately. Packaging materials (staples,

nails, plastic bags, expanded polystyrene etc.) con-

stitute a hazard and must be kept out of the reach of

children.

If the appliance must be installed inside or between

other cabinets or items of furniture, ensure that suf-

ficient space is left for maintenance; a clearance of

23 cm between the boiler casing and the sides of

the cabinet is recommended. Keep all flammable

objects well away from the appliance (paper, cloths,

plastic, polystyrene, etc.).

In the event of malfunctions, faults or incorrect op-

eration, switch the appliance off immediately and

contact a qualified technician (e.g. from the Immergas

Service centre to ensure use of original spare parts).

Never attempt to modify or repair the appliance alone.

Failure to observe the above implies personal respon-

sibility and renders the guarantee null and void.

Installation standards: these boilers have been

designed exclusively for wall-mounted installation.

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1.3 Connection unit (supplied as standardswith the boiler).

Gas hook-up (appliance category II2H3+

). Immergasboilers are designed to operate with the following

types of gas: natural gas (G20) and LPG. Delivery

pipelines must feature the same or larger diameters

as the 1/2"G boiler fitting. Before hooking up the gas

line, ensure that all system fuel pipelines are per-

fectly clean, and remove all residue that could impair

appliance efficiency. Also check that the gas

corresponds to boiler specifications (see boiler

dataplate). If the types are different, the appliance

should be converted for operation with the specific

type of gas required (see converting the appliance

for other gas types). The gas pressure must also be

checked (natural or LPG) according to the type used

in the boiler; insufficient levels could reduce genera-

tor power and malfunctions. Ensure that the gas valve

connection is correct as shown in the assembly se-

quence in the figure.

Hydraulic connection. Before making the hydrau-lic connections, all system pipelines must be cleaned

thoroughly to remove any residue that could impair

system efficiency. Hydraulic connections must be

made in a rational sequence using the couplings on

the boiler template. The exhaust of the boiler safety

valve must be connected to a funnel mechanism; if

this is not observed the manufacturer declines all li-

ability in the event of flooding when the drain valve is

opened.

Electrical Connection. The Eolo Mini boiler is de-signed with IPX4D protection rating. Electrical safety

of the unit is guaranteed when correctly connected

to an efficient earthing system as specified by cur-

rent safety standards.

Caution: Immergas S.p.A. declines all liability fordamage or physical injury caused by failure to con-

nect the boiler to an efficient earthing system or fail-

ure to observe CEI reference standards.

Also ensure that the electrical installation corre-

sponds to maximum absorbed power specifications

as shown on the boiler dataplate.

Boilers are supplied complete with an X type power

cable without plug. The power plug must be con-

nected to a 230V-50Hz mains with the correct pole

sequence L-N and the earth connection; the mains

must also be equipped with a multi-pole circuit

breaker with a contact opening gap of at least 3 mm.

In the event of power cable replacement, contact an

Authorised Immergas Service Centre for assistance.

The power cable must be laid as shown in the figure

on page 5.

In the event of mains fuse replacement on the con-

trol card, use a 2A quick blow fuse. For the main

power supply to the appliance, never use adapters,

multiple sockets or extension leads.

N.W.: when connecting the appliance, if the correctL-N polarity is not observed the boiler does not de-

tect the flame and inhibits start-up. Also in the same

case, if the neutral is powered with residual voltage

over 30V, the boiler will probably operate, but only

temporarily. Measure the voltage readings with suit-

able tools; avoid the use of mains tester screwdriver.

If the power supply is phase-phase type at 230V, to

guarantee safe conditions equivalent to existing con-

ditions when the boiler is powered with a Phase-Neu-

tral mains, an adaptor kit must be fitted on the boiler

for Phase-Phase mains, available on request. Con-

tact an Authorised Immergas Service Centre for in-

stallation of the kit.

Ambient thermostat electrical connection On/Off.Eolo Mini boilers are designed for use with an ambi-

ent thermostat or chronothermostat On/Off. The con-

nection is made on terminals 6 and 9 eliminating the

jumper P1 on the electronic card.

Key:R - 3/4" System returnM - 3/4" System deliveryG - 1/2" Gas supplyU - 1/2" Domestic hot

water outletE - 1/2" Domestic water

inletV - 230V-50Hz Electrical

connection

The kit comprises:2 - 3/4" telescopic fittings

(R-M)1 - 1/2" telescopic fitting

(U)1 - 1/2" gas fitting (G)1 - 1/2" ball valve

(E)3 - 18 copper bend2 - 14 copper bend2 - adjustable expansion

plugs2 - boiler support hooks

Seals and O-Rings

Key:1 - Gas valve2 - Nitrile O-ring3 - Brass washer4 - Flexible brass ring5 - Nut6 - Gas pipe

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Caution: Boiler pipelines must never be used to earththe electrical or telephone lines. Ensure elimination

of this risk before making the boiler electrical con-

nections.

1.4 Installing air intake and flue exhaust termi-nals.

Immergas supplies various solutions separately from

the boiler for the installation of air intake and flue

extraction, fundamental for boiler operation.

N.W.: The boiler must be installed exclusively withan original Immergas air intake and flue extraction

system as specified by standards UNI 7129. This sys-

tem is identifiable by a special and distinctive marking.

The flue ducts have not to be near or in contact with

inflammable materials, and they have not to pass

through buildings and walls made of inflammable

materials.

The types of terminals available from Immergas com-

prise:

Concentric horizontal intake and exhaust kit. This

terminal enables air intake and exhaust of flues

directly outside the building. The horizontal kit can

be installed with a rear outlet, right-hand outlet, left-

hand outlet and front outlet as required (see page

8).

Concentric vertical air intake and exhaust kit. This

terminal enables vertical air intake and flue exhaust

directly outside the building (see page 10).

Separator kit( 80/80). This kit enables air intake

to outside the building and flue exhaust via a flue

(see page 11). The central duct is used for flue

exhaust to the flue and the lateral duct is used for

air intake to outside the building (can be mounted

on left or right side of central duct). Both ducts can

be routed in either direction (see page 11).

Resistance factors and equivalent lengths. Each

flue extraction system component is designed with

a resistance factor based on preliminary tests andspecified in the table below. The 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 based on the temperature

of fluids conveyed through the ducts and therefore

varies according to applications for air intake or

flue exhaust. Each component has a resistance

corresponding to a specific length in metres of pipe

with the same diameter; the so-called equivalent

length, based on the ratio between different resist-

ance factors, for example : 80 90 bend; resist-

ance factor on intake 5; 1-metre 80 pipe; resist-

ance factor on intake 2.3; equivalent length of 90

80 bend = 5: 2.3 = 2.2 m of 80 pipe on intake.

In the same way each component has a resistance

factor corresponding to a specific length in metres

of a pipe with a different diameter, for example a

concentric 90 bend 60/100 Resistance Factor

21; pipe 80 m1 on exhaust, Resistance Factor =

3; Equivalent length of 90 bend 60/100 = 21 : 3 =

7 m of 80 pipe on exhaust. All boilers have a maxi-mum resistance factor based on testing at 100. Themaximum admissible resistance factor corresponds

to the resistance detected with the maximum ad-

missible pipe length with each type of Terminal Kit

installed. This information enables calculations to

verify the possibility of various configurations of flue

extraction systems.

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Resistance Factors and Equivalent Lengths.

DUCT TYPEResistance

Factor(R)

Equivalent length in

metres of concentric

pipe 60/100



pipe 80/125


metres of pipe 80

Concentric pipe 60/100 1 m

90 bend concentric 60/100


Terminal complete with concentric horizontal

intake-exhaust 60/100

Concentric pipe 80/125 m 1


Intakeand

exhaust16.5

m 1

Intake7.1m

Intakeand

exhaust21

m 1,3

Intake9.1m

Intakeand

exhaust16.5

m 1

Intakem 7.1m

Intakeand

exhaust46

m 2,8

Intakem 20m

Intakeand

exhaust6

m 0,4

Intake2.6m

Intakeand

exhaust7.5

m 0,5

Intake3.3m

Exhaust5.5 m

Exhaust7.0m

Exhaustm 5.5m

Intakem 14m

Exhaust2.0m

Exhaust2.5m

m 2,8

m 3,5

m 2,8

Exhaustm 15m

m 7,6

Exhaust10.6m

m 5,3m 1,9

Intakeand

exhaust32



m 1,0

m 1,3

45 bend concentric 80/125Intakeand

exhaust6

m 0,4

Intake2.6m

Exhaust2.0m

m 1,0

Terminal complete with concentric vertical intake-

exhaust 80/125

Intakeand

exhaust33

Intake14.3m

Exhaust11.0m

m 2,0 m 5,5


exhaust 80/125

m 1,6

Intake11.5m

Exhaust8.8m

Intakeand

exhaust26.5

m 4,4

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DUCT TYPEResistance

factor(R)



pipe 60/100



pipe 80/125


metres of pipe

80

Concentric adapter from 60/100

to 80/125 with condensate collector

Intake5.6 m

Exhaust4.3 m

Pipe 80 m 1

(with or without insulation)

Intake1.0 m

Intake terminal 80

Exhaust terminal 80

Intake2.2 m

Intake1.3 m

90bend 80 Intake5

0.3 m 0.8 mIntake2.2 m

Exhaust6,5

0.4 m 1.1 mExhaust

2.1 m

45 bend 80 Intake3

0.2 m 0.5 mIntake1.3 m

Exhaust4

0.2 m Exhaust1.3 m

0.6 m

Exhaust1.0 m

0.8 m

Intakeand

exhaust13

Complete intake terminal 80 m 1

(with or without insulation)

0.4 m

0.5 m

Intake2,3

Exhaust3

0.8 mIntake5

0.5 mIntake3

0.2 m

0.3 m

0.2 m

0.1 m

2.2 m

Sdoppiato parallelo 80

da 60/100 a 80/80

Intake3.8 m

Exhaust2,9 m

0.5 m

Intakeand

exhaust8.8

1.5 m

2.3 m

Intake16.9 m

Exhaust13 m

Intakeand

exhaust39



6.5 m

Intake14.8 m

Exhaust11.3 m

Concentric adapter from

60/100 to 80/125Intake0.8 m

Exhaust0.6 m



2.0 m

Intakeand

exhaust34

0.1 m

Intakeand

exhaust2

5.6 m

0.3 m

Resistance Factors and Equivalent Lengths.

Exhaust0.8 m

0.4 mExhaust2.5

0.1 m


exhaust 60/100 Intake18 m

7 m2.5 m

Exhaust14 m

Intakeand

exhaust41.7

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Diaphragm installation. To ensure correct opera-tion of the boiler, a diaphragm (see figure) must be

installed on output of the sealed chamber before the

intake and exhaust duct. Selection of a suitable dia-

phragm depends on the type of ducting used and

maximum length: calculations can be made using

the values in the tables below:

N.W.: Diaphragms are supplied as standard with theboiler.

* The values for maximum length are considered with1 metre of exhaust pipe and the remaining on in-take.

Horizontal intake-exhaust kit 60/100. Kit assem-bly: install the bend with flange (2) on the central

hole of the boiler taking care to insert the O-rings (1)

and secure by means of the screws supplied with

the kit. Join the male end (smooth section) of termi-

nal pipe (3) to the female section (with lip-seal) of

bend (2) to the end stop and ensure that the internal

and external washers are fitted to achieve perfect

sealing of all couplings.

Snap-fit couplings of concentric pipes or extensions

and elbow fittings 60/100. To install extension

couplings on other flue extraction components, pro-

ceed as follows: fit the concentric pipe or concen-

tric elbow with the male section (smooth) on the

DIAPHRAGMDuct length in metres

60/100 vertical

41,5 From 0 to 2.7

NONE Over 2.7

DIAPHRAGM*Duct length in metres

80 horizontal duct with twobends

41,5

NONE

From 0 to 20

Over 20

DIAPHRAGMDuct length in metres 60/100 horizontal

41,5 From 0 to 1

Over 1NONE

DIAPHRAGM*Duct length in metres

80 vertical duct withoutbends

41,5 From 0 to 25

NONE Over 25

DIAPHRAGMDuct length in metres 80/125 horizontal

41,5

NONE

From 0 to 1.9

Over 1,9

DIAPHRAGMDuct length in metres

80/125 vertical

41,5 From 0 to 6.8

NONE Over 6,8

DIAPHRAGM

The kit comprises:2 - O-rings (1)1 - Concentric 90 bend

(2)1 - Intake/exh. concentric

pipe 60/100 (3)1 - Internal washer (4)1 - External washer (5)

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female section (with lip-seal) of the previously in-

stalled component to the end stop to ensure per-

fect sealing of the coupling.

The horizontal intake-exhaust kit 60/100 can be

installed with a rear, right-hand, left-hand, or front

outlet as required.

Application with rear outlet. The 970 mm pipe length

enables partial routing through a maximum thick-

ness 770 mm. Normally the terminal should be

shortened. Calculate the distance by adding the

following: Part thickness + internal protrusion + ex-

ternal protrusion. Minimum protrusion values are

given in the figure below.

Application with lateral outlet; Using the horizontal

intake-exhaust kit only, without the special exten-

sions, enables routing through a wall thickness of

725 mm with the left-hand outlet and 635 with the

right-hand outlet.

Extensions for horizontal kit. The horizontal intake-

exhaust kit 60/100 can be extended up to a max.

horizontal distance of 3000 mm including the grilleterminal and excluding the concentric bend on out-

put of the boiler. This configuration corresponds to

a resistance factor of 100. In this case special ex-

tensions must be requested.

Connection with 1 extension. Max. distance be-

tween vertical boiler axis and external wall: 1855

mm.

Connection with 2 extensions. Max. distance be-

tween vertical boiler axis and external wall 2805.

Horizontal intake-exhaust kit 80/125. Kit assem-bly: install the bend with flange (2) on the central

hole of the boiler taking care to insert the O-rings (1)

and tighten with the screws supplied in the kit. Fit

the adapter (3) with the male section (smooth) in the

female section of the bend (2) (with lip seal) to the

end stop. Fit the concentric terminal 80/125 (4)

with the male section (smooth) in the female section

of the adapter (3) (with lip seal) to the end stop, en-

suring that the internal and external washers are fit-

ted to ensure sealing efficiency of all couplings.

Snap fit extension pipe fittings and concentric el-

bows 80/125. To install snap-fit extensions with

other elements of the boiler assembly, proceed as

follows: fit the concentric pipe or elbow with the

male section (smooth) on the female section (with

lip seal) to the end stop on the previously installed

to ensure sealing efficiency of the coupling.

Caution: if the exhaust terminal and/or extensionconcentric pipe needs shortening, consider that the

internal duct must always protrude by 5 mm with re-

spect to the external duct.

Normally the horizontal intake/exhaust kit 80/125

is used in the event of using particularly long exten-

sions; the kit 80/125 can be installed with a rear,

right-hand, left-hand or front outlet.

The kit comprises:2 - O-Rings (1)1 - Concentric bend

60/100 (2)1 - Adapter 60/100 for

80/125 (3)1 - Concentric int./exh.

bend 80/125 (4)1 - Internal washer (5)1 - External washer (6)

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Extensions for horizontal kit. The horizontal intake/

exhaust kit 80/125 can be extended up to a

maximum horizontal length of 7300 mm includingthe terminal grille and excluding the concentric

bend on output of the boiler and the adapter 60/

100 in 80/125 (see figure). This configuration

corresponds to a resistance factor of 100. In these

cases specific extensions must be requested.

N.W.: when installing the ducts, a section clampwith pin must be installed every 3 metres.

External grille. The intake/exhaust terminal mod-

els 60/100 and 80/125, if correctly installed,

blend with external building aesthetics. Ensure that

the silicon washer is fitted snugly against the ex-

ternal wall.

N.W.: for safety purposes, do not totally or partiallyobstruct the boiler intake/exhaust terminal even

temporarily.

Vertical kit with aluminium tile 80/125. Kit as-sembly: install the concentric flange (2) on the cen-

tral hole of the boiler taking care to insert the O-rings

(1) supplied with the kit and tighten by means of the

screws supplied with the boiler. Fit the male section

(smooth) of the adapter (3) coin the female section

of the concentric flange (2). Installing the imitation

aluminium tile. Replace the tile with the aluminium

sheet (5), shaping it to ensure off-flow of rainwater.

Position the fixed half-shell (7) on the aluminium tile

and insert the intake/exhaust pipe (6). Fit the con-

centric terminal 80/125 with the male section (6)

(smooth), in the female section of the adapter (3)

(with lip seal) to the end stop, ensuring that washer

(4) si already fitted to ensure sealing efficiency of all

couplings.

Snap fit extension pipe fittings and concentric el-

bows 80/125. To install snap-fit extensions

with other elements of the boiler assembly, pro-

ceed as follows: fit the concentric pipe or elbow

with the male section (smooth) on the female sec-

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

installed to ensure sealing efficiency of the cou-

plings.

Caution: if the exhaust terminal and/or extensionconcentric pipe needs shortening, consider that the

internal duct must always protrude by 5 mm with re-

spect to the external duct.

This specific terminal enables flue exhaust and air

intake in a vertical direction.

N.W.: the vertical kit 80/125 with aluminium tileenables installation on terraces and roofs with maxi-

mum gradient of 45% (24) and the height between

the terminal cap and half-shell (374 mm) must be

strictly observed.

This vertical kit configuration can be extended to a

maximum length of 12200 mm in a vertical straightroute, including the terminal (see figure below). This

configuration corresponds to a resistance factor of

100. In this case specific extensions must be re-

quested.

Terminal 60/100 can also be used for vertical ex-

haust, in conjunction with concentric flange code no.

3.011141 (sold separately). height between the ter-

minal cap and half-shell (374 mm) must be strictly

observed (see drawing below).

This vertical kit configuration can be extended to a

maximum length of 4700 mm in a vertical straightline, including the terminal (see figure below).

The kit comprises:2 - O-Rings (1)1 - Female concentric flange

(2)1 - Adapter 60/100 for

80/125 (3)1 - Washer(4)1 - Aluminium tile (5)1 - Int./exh. concentric pipe

80/125 (6)1 - Fixed half-shell (7)1 - Mobile half-shell (8)

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Separator kit 80/80. The separator kit 80/80,enables the division of the flue exhaust pipes and air

intake pipes according to the diagram shown in the

figure. Combustion products are expelled from duct

(B). Air is taken in through duct (A) for combustion.

Intake duct (A) can be installed either on the right or

left hand side of the central exhaust duct (B). Both

ducts can be routed in any direction.

Assembly of separator kit 80/80. Install flange

(4) on the central hole of the boiler taking care to

insert O-rings (1) supplied with the kit and tighten

by means of the screws on the boiler. Remove the

flat flange on the lateral hole (depending on instal-

lation requirements) and replace with flange (3)

inserting seal (2) already fitted on the boiler and

tighten with the screws supplied. Joins bends (5)


of the flanges (3 and 4). Fit the intake terminal (6)


of the flange (5) to the end stop with the internal

and external washers inserted. Join the exhaust

pipe (9) with the male section (smooth) in the

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

ensuring that the internal washer is fitted and to

ensure sealing efficiency of the couplings.

Snap fit extension pipe fittings and elbows. To in-

stall snap-fit extensions with other elements of the

boiler assembly, proceed as follows: fit the pipe or

elbow with the male section (smooth) on the fe-

male section (with lip seal) to the end stop on the

previously installed to ensure sealing efficiency of

the couplings.

Installation clearances. The following figure shows

the minimum installation clearances for the termi-

nal separator kit 80/80 in maximum admissible

conditions.

Extensions for separator kit 80/80. The maxi-

mum straight length (without bends) on a vertical

route, for intake and exhaust pipes 80 is 41 me-

tres, 40 of which on intake and 1 on exhaust. This

total length corresponds to a resistance factor of

100. The total effective length, obtained by adding

the length of intake and exhaust pipes 80 must

not exceed the maximum values specified in the

table below. If mixed accessories or componentsare used (e.g. changing from a separator 80/80

to a concentric pipe), the maximum extension can

be calculated by using the resistance factor for each

component or the equivalent length. The total ofthe resistance factors must not exceed 100.

Temperature drops in flue ducts. To avoid the prob-

lem of flue condensation in the exhaust pipe 80,

due to cooling through the walls, the length of theduct must be restricted to within 5 metres. If longerdistances have to be covered, use pipe diameters

80 with insulation (see insulated separator kit

80/80).

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TH

47

00

mm

MA

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NG

TH

12200 m

m

The kit comprises:2 O-Rings (1)1 - Female intake

flange (3)1 - Flange seal (2)1 - Female exhaust

flange (4)

2 - 90 bend 80 (5)1 - Intake terminal 80

(6)2 - Internal washers (7)1 - External washer (8)1 - Exhaust pipe 80 (9)

A = INTAKEB= EXHAUST

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N.W.: when installing the 80 ducts, a section clampwith pin must be installed every 3 metres.

Insulated separator kit 80/80. Kit assembly: In-stall flange (4) on the central hole of the boiler tak-

ing care to insert O-rings (1) supplied with the kit

and tighten by means of the screws on the boiler.

Remove the flat flange on the lateral hole (depend-

ing on installation requirements) and replace with

flange (3) inserting seal (2) already fitted on the boiler

and tighten with the screws supplied. Insert and slide

cap (6) onto bend (5) on the male section (smooth)

and join bends (5) with the male section (smooth in

the female section of flange (3). Fit bend (10) with

the male section (smooth) in the female section of

flange (4). Join the intake terminal (7) with the male

section (smooth in the female section of bend (5) to

the end stop, ensuring that washers (8) are inserted

to achieve correct installation between the pipe and

wall and fit the end cap (6) on terminal (7). Join the

exhaust pipe (9) with the male section (smooth) in

the female section of the bend (10) to the end stop,

ensuring that the washer (8) is already inserted for

correct installation between the pipe and flue. Snap fit extension pipe fittings and elbows. To in-

stall snap-fit extensions with other elements of the

boiler assembly, proceed as follows: fit the con-

centric pipe or elbow with the male section (smooth)

36.0*

INSULATED DUCT

Maximum effective lengths

(including intake terminal with grille and two 90 bends)

Intake (metres)

NON-INSULATED DUCT

Exhaust (metres) Intake (metres) Exhaust (metres)

29.5*1 6

28.0*2 34.5* 7

26.5*3 33.0* 8

25.5*4 32.0* 9

24.0*5 30.5* 10

22.5*11

21.5*12* The intake duct can be increased by 2.5 metres if

the bend on exhaust is eliminated, 2 metres if theintake bend is eliminated or 4 metres of both bendsare removed.

The kit comprises:2 - O-Rings. (1)1 - Flange seal (2)1 - Female intake flange (3)1 - Female exhaust flange (4)1 - 90 bend 80 (5)1 - Pipe end cap (6)1 - Insulated intake terminal 80 (7)3 - Washers (8)1 - Insulated exhaust pipe 80 (9)1 - Concentric 90 bend 80/125 (10)

A = INTAKEB= EXHAUST

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

on the previously installed to ensure sealing effi-

ciency of the couplings.

Insulation of separator terminal. In the event of

problems of condensation of flues inside the ex-

haust pipes or on the outside surface of the intake

pipes, on request Immergas supplies insulated in-

take and exhaust pipes. Insulation may be neces-

sary on exhaust pipes due to excessive drops in

temperature of flues during conveyance from the

boiler and on the intake pipes as air on input (cold)

may cause the external pipe temperature lower

than the dew point of the ambient air. The figures

below illustrate different applications of insulated

pipes.

Insulated pipes comprise an internal 80 concen-

tric pipe and a 125 external pipe with static air

jacket. Technically it is not possible to start with

both 80 elbows insulated as clearances will not

allow this type of installation. However an insulated

elbow can be used by selecting either the intake

or exhaust pipe. If an insulated intake pipe is used,

the flange must be inserted to the end stop on the

flue extraction flange to ensure that the height of

the two intake and exhaust outlets is aligned.

Temperature loss in insulated ducting. To avoid the

problem of flue condensation in insulated exhaust

80 pipes, due to cooling via the wall, the ex-haust pipe length must be restricted to 12 metres.The figure above illustrates a typical insulation ap-

plication in which the intake pipe is short and the

exhaust pipe very long (over 5 m). The entire in-

take pipe is insulated to prevent condensation of

humid air in the boiler environment in contact with

the cooled pipe conveying cool outdoor air. The

entire exhaust pipe is insulated with the exception

of the elbow on output of the splitter, to reduce heat

dispersion from the duct and prevent formation of

flue condensate.

N.W.: when installing the insulated ducts, a sec-tion clamp with pin must be installed every 2 me-

tres.

1.5 Flue exhaust via flues.Flue exhaust does not necessarily have to be con-

nected a branched type traditional flue and can be

connected to a special LAS type multiple flue. Flues

must be specially designed according to specifica-

tions in the standard by qualified professional

personnel.

Chimney or flue sections for connection of the ex-

haust pipe must comply with requirements as laid

down in standards.

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1.6 Chimneys/Flues.General notes. A chimney/flue used to exhaust com-bustion products must be designed as follows:

- ducting must ensure sealing of combustion prod-ucts, be waterproof and insulated;

- construction in incombustible material suitable to

resist normal mechanical stress, heat and action

of combustion products or condensation;

- ducting routed vertically without reductions/throt-

tles;

- adequate insulation to avoid condensation or cool-

ing of flue gas, in particular if installed outside the

building or in rooms without heating;

- be adequately spaced, or, be fitted with an air jacket

for insulation from zones with combustible and/or

easily flammable materials;

- installation of a solid materials collection unit be-low the first flue channel at a height of at least500mm, fitted with a metal airtight door;

- designed with an internal circular, square or rec-

tangular section (in that latter two cases with

rounded angles with a radius no less than 20 mm).

Hydraulically equivalent sections are also admit-

ted;

- installation of a chimney terminal at the top of the

flue in compliance with specifications below and in

compliance with standards;

- without mechanical suction devices installed at the

top of the duct;

- in flues routed inside or against inhabited build-

ings, there must be no risk of pressure surges.

Chimney caps. These devices are installed on sin-gle or multiple flues, to facilitate dispersion of com-

bustion products also in adverse weather conditions

and prevent deposit of foreign matter. Chimney caps

must meet the following requirements:

- useful output section no less than double that of

the flue/chimney;

- suitably designed to prevent penetration of rain or

snow in the flue/chimney;

- designed to ensure constant exhaust of combus-

tion products with any direction or angle of wind.

The outlet height, corresponding to the height of the

top of the flue/chimney, regardless of chimney caps,

must be outside the backflow zone, to avoid the

risk of counterpressure that prevents the free release

of combustion products into the atmosphere. There-

fore always observe the minimum heights indicated

in the figures in standards.

Positioning the draft terminals. Draft terminalsmust:

- be installed on external perimeter walls of the build-

ing;

- be positioned (see figure) according to the mini-

mum distances specified in current technical

standards.

1.7 System filling.Once the boiler is connected, proceed with system

filling via the filling valve (see figure page 18).

Filling is performed at low speed to ensure release

of air bubbles in the water via the boiler and heating

system vents.

The boiler is equipped with an automatic venting

valve located on the circulation pump. Check that

the cap is loosened and open the vent valves on the

radiators and close only when water is delivered.

Close the filling valve when the boiler pressure gauge

indicates approx. 1,2 bar.

N.W.: During this operation, activate the circulationpump at regular intervals by means of the main switch

on the control panel. Vent the circulation pump byloosening the front cap and keeping the motor run-ning.Tighten the cap on completion.

1.8 Gas system start-up.To start up the system proceed as follows:

- open windows and doors;

- avoid presence of sparks or naked flames;

- vent all air from pipelines;

- check gas intake sealing efficiency with the boiler

gas shutoff valve closed, checking that there is no

gas transfer for at least 10 minutes.

1.9 Boiler start-up (ignition).The following conditions are required for boiler start-

up:

- ensure gas intake sealing efficiency with the shutoff

valves closed and subsequently open with gas

valve closed over an interval of 10 minutes in which

no gas transfer must be detected by the meter;

- ensure that the type of gas used corresponds to

boiler settings;

- switch on the boiler and ensure correct ignition;

- ensure that the gas flow rate and pressure values

correspond to manual specifications (see page 24);

- ensure that the safety device is engaged in the

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event of gas supply failure and check activation

time;

- check activation of the main circuit-breaker switch

upstream of the boiler and on the unit;

- check that the concentric intake/exhaust terminal

(if fitted) is not blocked.

The boiler must not be started up in the event of fail-

ure to comply with any of the above.

Preliminary boiler testing must be performed by quali-fied personnel (e.g. free of charge by an AuthorisedImmergas Service Centre). The boiler guarantee isvalid as of the date of testing.The test certificate and guarantee is issued to theuser on completion.

1.10 Circulation pump.Eolo Mini boilers are supplied with a built-in circula-

tion pump with 3-position electric speed control.

The first speed setting is for low flow rates and is not

recommended.

To ensure optimal boiler operation, in the case of

new systems (single pipe and modul) use the circu-

lation pump at maximum speed (third setting). The

circulation pump is already fitted with a capacitor.

Pump release (when required). After a prolongedperiod of disuse, if the pump is blocked, loosen the

front cap and rotate the motor using a screwdriver.

Take great care during this operation to avoid dam-age to the motor.

System pump head.

Head in m

mw

.g.

A

B

Flow rate Litres/h

CD

A = Head available on third speedsetting

B = Head available on second speedsetting

C = Head available on third speedsetting with by-pass (optional)inserted

D = Head available on second speedsetting with by-pass (optional)inserted

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1.11 Kits available on request. Kit of system shutoff valves (on request). The boiler

is designed for installation of system shutoff valves

for insertion on delivery and return pipelines on the

connection assembly. This kit is particularly useful

as it enables draining of the boiler separately from

the entire system.

By-pass kit (on request). If zone valves are installed

on the heating systems, or in the event of low cir-

culation water flow rate, Immergas can supply a

Bypass kit for installation on the delivery and re-

turn couplings on the boiler. In thee conditions an

adequate and constant water flow to the boiler is

1.12 Eolo Mini boiler components.

guaranteed. The head/flow rate curve is shown in

the diagram above.

Polyphosphate batching kit (on request). The

polyphosphate batching unit prevents the forma-

tion of limescale over time and maintains constant

heat exchange conditions and production of do-

mestic hot water. The boiler is designed for appli-

cation of the polyphosphate batching unit.

The above kits are supplied complete with instruc-

tions for assembly and use.

Key:1 - Air/flue intake sockets (A air) - (F flue)2 - Flue extraction fan3 - NTC limit and regulation sensor4 - 3 way hydraulic valve5 - Gas valve6 - System filling valve7 - Positive signal pressure socket8 - Negative signal pressure socket9 - Fan safety pressure switch

10 - Sealed chamber11 - Termp. overload safety thermostat

12 - Expansion vessel13 - Combustion chamber14 - Automatic air vent valve15 - Circulating pump16 - Tubesheet heat exchanger17 - 3 bar safety valve18 - System drain valve19 - Flue extractor hood20 - Primary heat exchanger21 - Ignition/detection electrodes22 - Burner

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2 OPERATION AND MAINTENANCEINSTRUCTIONS2.1 Preliminary testing.On completion of all installation instructions (includ-

ing system filling) within maximum 30 days, contact

an authorised technician (such as the immergas Au-

thorised Technical Services). Immergas Service Cen-

tres performs a preliminary test on the boiler and

supplies the user with all instructions for boiler use.

N.W.: preliminary testing by qualified personnel isindispensable for boiler efficiency and guarantee va-

lidity; the test ensures optimal Immergas boiler effi-

ciency; reliability, efficiency and energy savings.

2.2 Cleaning and Maintenance.Caution: Is suggest for the user to perform at leastannual maintenance of the heating system and at

least a bi-annual check of combustion (flue test).

This ensures that the optimal safety, performance

and operation characteristics of the boiler remain un-

changed over time.

2.3 General Warnings.Never expose the wall-mounted boiler to direct va-

pours from a cooking surface.

Use of the boiler by unskilled persons or children is

strictly prohibited.

Never touch the flue extraction terminal (if fitted) due

to the risk of burning caused by high temperatures;

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, pro-

ceed as follows:

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

b) shut off all electrical, water and gas supplies.

In the case of work or maintenance to structures lo-

cated in the vicinity of ducting or devices for flue ex-

traction and relative accessories, switch off the ap-

pliance and on completion of operations ensure that

a qualified technician checks efficiency of the ducting

or other devices.

Never clean the appliance or connected parts with

easily flammable substances.

Never leave containers or flammable substances in

the same environment as the appliance.

Caution: use of components involving use of elec-trical power requires observance of the following

rules:

- never touch the appliance with wet hands or other

parts of the body and never touch when barefoot;

- never pull electrical cables or leave the appliance

exposed to atmospheric agents (rain, sunlight, etc.);

- the appliance power supply cable must never be

replaced by the user;

- in the event of damage to the cable, switch off the

appliance and contact exclusively qualified person-

nel for replacement;

- in the event of prolonged periods of disuse, turn

off the main power switch.

2.4 Eolo Mini - Control Panel.

Key:1 - Boiler pressure/temperature gauge2 - Flame presence yellow indicator lamp3 - Boiler block red indicator lamp

4 - Switch 0-Domestic-Domestic and Heating-Reset

5 - Domestic hot water temperature selector6 - Heating temperature selector

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Boiler shutdown. Turn off the main switch (4) bysetting to 0 (yellow indicator lamp 2 OFF) and close

the gas supply valve upstream of the appliance.

Never leave the boiler switched on if left unused for

prolonged periods.

2.5 Heating system pressure.Periodically check the system water pressure. The

boiler pressure gauge should read a pressure be-

tween 1 and 1,2 bar.

If the pressure falls below 1 bar (with the circuit cool)restore normal pressure via the valve located at thebottom of the boiler (see figure).

N.W.: close the valve on completion.If pressure values reach around 3 bar the safety valve

may be activated.

In this case contact a professional technician for as-

sistance.

In the event of frequent pressure drops, contact quali-

fied personnel for assistance to eliminate system

leakage.

2.6 Draining the system.To drain the system completely, use the drain valve

(see figure above and on page 16).

Before draining, ensure that the filling valve is closed.

2.7 Anti-freeze protection.The boiler is equipped as standard with an anti-freeze

function that activates the pump and burner when

system water temperature falls below 8C and de-

activates once temperatures reach 43C. The anti-

freeze function is guaranteed if the boiler is totally

operative and not in block status, when connected

to the electrical power supply and the main switch is

set to Summer or Winter mode. To avoid continued

operation in the event of prolonged absence, the sys-

tem must be drained completely or anti-freeze sub-

stances should be added to the heating system wa-

ter. In both cases the domestic water circuit in the

boiler must be drained. In appliances subject to fre-

quent draining, the system must be refilled with suit-

ably treated water to eliminate hardness that may

cause limescale formation.

Boiler ignition. Before switching on the boiler, checkthat the system is filled with water and that gauge (1)

indicates a pressure of 11,2 bar.

- Open the gas valve downstream of the boiler.

- Turn the main switch (4) to the setting Domestic or

Domestic/Heating to enable standby mode, i.e.

boiler on but no flame present (both indicator lamps

switched off), this status remains until hot water is

required and the burner is ignited and the circula-

tion pump is activated (indicator lamp 2 ON).

With the switch set to ( ) the heating regulation se-

lector (6) is inhibited, and the domestic water tem-

perature is regulated via selector (5).

With the switch set to ( ) the heating regulation

selector (6) is used to regulate the temperature of

radiators, while selector (5) is used for the domestic

water; rotate clockwise to increase the temperature

and counterclockwise to decrease.

Boiler operation is now automatic.

Ignition block - Red indicator lamp (3) ON. Eachtime heating or hot water production is required the

boiler is activated automatically. If this does not oc-

cur within 10 seconds, the boiler activates an igni-

tion block (indicator lamp 3 ON). To eliminate the

block, rotate the main switch (4) temporarily to the

Reset position. On initial ignition or following a pro-

longed period of disuse the ignition block may need

to be inhibited. If this function is activated repeat-

edly, contact a qualified technician for assistance (e.g.

Immergas Technical Services Centre).

Temperature overload block Red indicator lamp(3) flashing. During operation, if a fault causes atemperature overload condition, boiler operation is

shut off. Causes may be the following:

- lack of water in the primary circuit; check that pres-

sure is between 1 and 1,2 bar;

- low circulation; check that no shutoff devices are

closed on the heating circuit or that any air bub-

bles are present in the system;

- circulator blocked; release (see page 15).

To startup the boiler, set the main switch (4) tempo-

rarily to Reset. If this fault occurs repeatedly, contact

a qualified technician for assistance (e.g. Immergas

Technical Services Centre).

Air pressure switch activation failure - Red indi-cator lamp (3) and yellow indicator lamp (2) flash-ing. This fault condition occurs if the intake or ex-haust pipes are blocked or a fan fault. In this case

contact a qualified technician for assistance (e.g.

Immergas Technical Services Centre). If normal con-

ditions are restored the boiler resumes operation with-

out requiring reset.

Sensor fault - yellow indicator lamp (2) flashing.On ignition, if the control unit detects a fault on the

NTC sensor, the boiler does not start; in this case

contact a qualified technician for assistance (e.g.

Immergas Technical Services Centre).

VIEW FROM REAR

GAS VALVE

DRAIN VALVE

FILLING VALVE

DOMESTIC WATER

INLET VALVE

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2.8 Casing cleaning.Use damp cloths and neutral detergent to clean the

boiler casing. Never use abrasive or powder deter-

gents.

2.9 Decommissioning.In the event of permanent shutdown of the boiler,

contact professional personnel for the procedures

and ensure that the electrical, water and gas supply

lines are shut off and disconnected.

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3 BOILER START-UP (PRELIMINARY TESTING)To start up the boiler, proceed as follows:

- ensure that the declaration of conformity of instal-

lation is supplied with the appliance;

- ensure sealing efficiency of the gas intake circuit

with the shutoff valves closed and then with the

valves open and the gas valve deactivated

(closed); the meter must not indicate gas transfer

for at least ten minutes;

- ensure that the gas used corresponds to specifi-

cations for the boiler;

- ensure connection to a 30V-50Hz power mains,

correct L-N polarity and the earthing connection;

- switch on the boiler and ensure correct ignition;

- ensure that the maximum, intermediate and mini-

mum gas flow rate and relative pressure values

conform to specifications in the booklet on page 4;

- ensure activation of the safety device in the event

of gas supply failure, as well as the relative activa-

tion time;

- ensure activation of the main switch downstream

of the boiler and inside the boiler;

- check that the intake and/or exhaust terminals are

not blocked;

- ensure activation of the safety pressure switch in

the event of air supply failure;

- ensure activation of all regulation devices;

- seal the gas flow rate regulation devices (if set-

tings are modified);

- ensure production of hot domestic water;

- ensure sealing efficiency of water circuits;

- ensure adequate ventilation and/or aeration of the

boiler environment.

If any checks/inspection give negative results, do not

start the boiler.

Ambient thermostat: the boiler is designed for appli-

cation of an Ambient thermostat (TA). Connect to ter-

minals 6 and 9 and remove jumper P1.

3.2 Electronic card function options.The electronic card is equipped with jumpers de-

signed to regulate boiler operation according to spe-

cific installation requirements.

- Jumper JP1: when inserted the appliance operates

with LPG; when removed the appliance operates

3.1 Eolo Mini electrical circuit diagram.

with natural gas.

- JP2 jumper: when inserted the boiler set to Do-

mestic water shuts down the burner at maximum

settings; when removed shutoff is regulated by the

domestic water temperature settings.

- JP3 jumper; when inserted, after the heating tem-

perature is reached the boiler only re-starts after 3

minutes; when removed, the interval before re-start

changes to 30 seconds, useful for convection fan

systems.

Secondary

Primary

Heating

power

230 Vac 50 Hz

power supply

Bro

wn

Blu

e

Yello

w/G

reen

Blu

eB

row

n

Bla

ck

Bla

ck

Bla

ck

Bla

ck

Red

Red

Blu

eB

row

nW

hite

Wh

ite

Blu

e

Bro

wn

Blu

eB

row

n

Slow

IgnitionD.H.W. Temp.

adjuster

C.H. Temp.

adjuster

Key:E1-E2 - Ignition electrodes

E3 - Detection electrodeJP1 - Gas selectorJP2 - Domestic therm. selectorJP3 - Heating timer selectorLD1 - Flame presence ledLD2 - Fault indicator led

MOD - Modulating coilMP - Circulating pumpMV - FanNM - Delivery NTC sensorP1 - Ambient thermostat jumperSS - Domestic flowrate microswitchSV - Air pressure microswitchTA - Ambient thermostat On/Off

(optional)TS - Temp. overload safety

thermostatVG - Gas valve

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3.3 Eolo Mini hydraulic circuit diagram.

3.4 Troubleshooting.

N.W.: maintenance must be performed by qualifiedpersonnel (e.g. Immergas Technical Service Centre).

- Smell of gas. Caused by leakage from gas circuit

pipelines. Check sealing efficiency of gas intake

circuit.

- The fan works but the discharge of ignition on the

burner ramp is not activated. The fan may start but

the safety air pressure switch does not change the

contact. In the case check the following:

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

admissible length).

2) that the intake-exhaust duct is not partially

blocked (on either the exhaust or intake side)..

3) that the diaphragm on the flue exhaust outlet is

commensurate with the length of the intake/ex-

haust ducting.

4) that the sealed chamber is perfectly sealed.

5) that the fan power supply voltage is minimum

196 V.

- Irregular combustion (red or yellow flame). This

may be caused by a dirty burner, blocked reed

valve, or incorrect installation of the intake-exhaust

terminal. Clean the specified components and en-

sure correct installation of the terminal.

- Frequent activation of the temperature overload

thermostat. This may be caused by lack of water

in the boiler. insufficient water circulation in the cir-

cuit or a blocked circulator. Check via the pressure

gauge that values are within admissible limits.

Check that radiator valves are not all closed and

that the circulator operates correctly.

- Presence of air in the system. Ensure opening of

the hood on the air venting valve (see fig. page

16). Ensure that system pressure and pre-charge

of the expansion vessel are within the set limits;

the per-charge value for the expansion vessel mustbe 0,8 bar, and system pressure between 1 and

1,2 bar.

- Ignition block; see pages 18 and 4 (electrical con-

nection).

3.5 Converting the boiler to other types of gas.In the event of converting the boiler for a gas type

other than that specified on the dataplate the rela-

tive conversion kit must be requested for quick and

easy conversion.

Conversion of the boiler must be performed by a

skilled technician (e.g. Immergas Technical Services

Centre).

To convert to another type of gas the following op-

erations are required:

- main burner nozzle replacement;

- movement of jumper (13 page 23) to correct posi-

tion for type of gas required (Natural or LPG);

- adjustment of minimum boiler heating power;

- adjustment of maximum boiler heating power;

- adjustment of heating power;

- adjustment of first slow step of burner ignition;

- sealing of gas flow rate devices (if modified).

- when transformed the boiler, append the adhesive

contained into transformation kit, near data-sheet

of boiler. On the data-sheet is necessary to cancel

(using an indelible marker) data of old type of gas.

Key:1 - Filling valve2 - Priority microswitch3 - Gas valve4 - 3 way hydraulic valve5 - NTC limit and regulation sensor6 - Domestic water heat exchanger7 - Main burner8 - Primary heat exchanger9 - Sealed chamber

10 - Flue extraction fan11 - Fan safety pressure switch12 - Flue extraction hood13 - Temp. overload safety thermostat14 - Expansion vessel15 - Automatic air venting valve16 - Circulating pump17 - Flow limiter18 - Drain valve19 - 3 bar safety valve

G - Gas supplyU - Hot domestic water outletE - Domestic water inletR - System returnM - System delivery

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These adjustments must be performed with reference

to the type of gas used, as specified in the table on

page 24.

3.6 Checks following conversion to other typeof gas.

After ensuring the correct conversion procedure with

specified nozzle diameters and settings to the cor-

rect pressure, ensure the following:

- that there is no flame return in the combustion

chamber;

- that the burner flame is not excessively high or low

and is stable (does not detach from burner);

- that the pressure testers used for calibration are

perfectly closed and there are no leaks from the

gas circuit.

N.W.: all boiler adjustment operations must be per-formed by a skilled technician (e.g. from an Immergas

Technical Services Centre). Adjustment of the burner

must be carried out using a differential U or digital

type pressure gauge, connected to the pressure out-

let at the top of the sealed chamber (part 7 page 16)

and the outlet pressure socket on the gas valve out-

let (part 6 page 23), with reference to the pressure

value specified in the table on page 24 according to

the type of gas to be used with the boiler.

3.7 Eolo Mini adjustments (when required). Minimum heating power adjustment (see figure

page 23).

The minimum heating power is adjusted by means

of the brass screw (3) on the gas valve;

- shut off power supply to the modulating coil (sim-

ply detach a faston); rotate the screw clockwise to

increase and counterclockwise to decrease. On

completion of adjustment, reconnect the modulat-

ing coil. The boiler minimum heating pressure must

be not be set below values as specified in the ta-

bles on page 24 according to the type of gas used.

Adjustment of rated heating power (see figure page

23).

N.W.: adjust only after setting minimum pressurevalues.

- Rotate the domestic hot water temperature selec-

tor (5 page 17) to the maximum setting.

- Open the hot domestic water valve to avoid acti-

vation of modulation.

- Adjust the rated boiler heating power by means of

plastic nut (4) according to pressure values speci-

fied in the tables on page 24 according to the type

of gas used.

- Rotate clockwise to increase power and

counterclockwise to decrease.

Adjustment of heating power (see figure page 23).

Adjust the room heating output by means of trim-

mer (12 page 23) inserted on the boiler modula-

tion electronic card as follows:

- close the hot domestic water valve and position

switch (4 page. 17) to ( );

- set the heating control selector (6 page 17) to the

maximum temperature to prevent modulation;

- adjust heating power by rotating the trimmer (12

page 23) on the modulation card, with reference to

values specified in the table on page 24 for boiler

variable heating power. Rotate clockwise to in-

crease pressure and counterclockwise to decrease.

N.W.: to adjust the gas valve, remove the plastic cap(9) and rotate screw (5). On completion refit the cap

and screw.

N.W.: Eolo Mini boilers are fitted with electronic modu-lation that adapts boiler power to effective ambient

heating requirements. Therefore the boiler operates

normally in a variable gas pressure range between

the minimum and maximum heating power accord-

ing to the system heat load.

N.W.: Eolo Mini boilers are designed and calibratedduring a heating phase at the rated power.

3.8 Adjustment of Eolo Mini boiler slow igni-tion.

After setting the minimum and maximum heating

settings for the appliance the first slow ignition step

can be set for the gas valve. Adjust by means of trim-

mer (11) on the boiler electronic modulation card.

Rotate clockwise to increase pressure and

counterclockwise to decrease. To achieve slow or

gradual inter-ignition of the burner, we recommend

setting the first step for slow ignition at 50 mmw.g.

for boilers operating with natural gas and 130 mmw.g.

for boilers operating with LPG.

N.W.: never fall below the minimum heating powerwhen setting the slow ignition values.

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3.9 Casing disassembly.To facilitate boiler maintenance the casing can be

disassembled as follows:

- Remove the lower filling valve.

- Remove the lower cover by slackening the two

screws (1).

- Slacken the 2 fixing screws on the control panel

and tilt forward to open.

GAS VK 4105 valve for Eolo Mini appliancesEolo Mini electronic card

- Slacken the two casing fixing screws (2).

- Detach the rear boiler panel as shown in the fig-

ure.

- Pull the casing forwards and up at the same time

(see figure) to detach from the upper hooks.

Key:1 - Coil2 - Coil pin3 - Minimum power adjustment screw4 - Maximum power adjustment screw5 - Protection hood fixing screw6 - Gas valve outlet pressure socket7 - Gas valve inlet pressure socket

8 - Air pressure socket hose connector9 - Protection hood

10 - 2A fuse11 - Slow ignition adjustment trimmer12 - Heating adjustment trimmer13 - Jumper for operation with natural gas or LPG

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3.10 Annual appliance maintenance.The following checks and maintenance should be

performed at least once a year.

- Clean the flue side of the heat exchanger.

- Clean the main burner.

- Make a visual inspection of the flue extraction hood

for wear or corrosion.

- Ensure correct ignition and operation.

- Ensure correct settings of the burner in domestic

water and heating phases.

- Verify correct operation and adjustments of the ap-

pliance, in particular:

- activation of the electrical main switch on the

boiler;

- activation of the system control thermostat;

- activation of the domestic water control thermo-

stat.

- Ensure sealing efficiency of the gas intake circuit;

insert a U or digital type pressure gauge in the

pressure socket upstream of the gas valve and sub-

sequently closing the boiler shutoff valve (cock) and

closing the gas valve, no pressure variation must

occur in the next five minutes on the gauge.

- Ensure activation of the device for protection

against the ionisation flame control gas; activa-

tion time must be less than ten seconds.

- Visually inspect to check for leakage of water or

oxidation of relative couplings.

- Check visually that the water safety drain valve is

not blocked.

- Check that the charge of the expansion vessel af-

ter discharging system pressure to the zero set-

ting (check via boiler pressure gauge), is at 0,8

bar.

- Check that the system static pressure (in cold con-

ditions and after system recharging via the filling

valve ) is between 1 and 1,2 bar.

- Check visually that the safety and control devices

have not been tampered with and/or shorted, in

particular:

- temperature safety thermostat;

- air pressure switch.

- Ensure correct maintenance and condition of the

electrical installation with particular reference to:

- electrical cables must be inside the channels;

- no traces of black marking or burns.

3.11 Eolo Mini variable heating power.

N.W.: Pressure values specified in the table indicatethe difference of pressure values between the gas

valve outlet and the combustion chamber. Adjust-

ments are therefore carried out with the differential

pressure gauge ( U or digital type) with the sensors

inserted in the test pressure outlet of the modulating

adjustable gas valve and on the sealed chamber posi-

tive pressure test outlet . Power data specified in the

table refer to a 1 metre intake/exhaust pipe. Gas flow

rates refer to heat power below temperature of 15C

and at a pressure of 1013 mbar. Burner pressure

values refer to use of gas at 15C.

)02G()02G(SAGLARUTAN )03G(ENATUB )13G(ENAPORP

GNITAEHREWOP)h/lack(

GNITAEHREWOP

)Wk(

SAGRENRUBETARWOLF

m( 3 )h/

ELZZONRENRUBERUSSERP

).g.wmm()rabm(

SAGRENRUBETARWOLF

)h/gk(


).g.wmm()rabm(

SAGRENRUBETARWOLF

)h/gk(


).g.wmm()rabm(

00002 3,32 17,2 8,11 021 20,2 8,82 492 99,1 0,73 773

00091 1,22 95,2 8,01 011 39,1 3,62 962 09,1 8,33 543

00081 9,02 64,2 7,9 99 38,1 7,32 242 08,1 5,03 113

00071 8,91 33,2 7,8 98 37,1 3,12 712 17,1 3,72 972

00061 6,81 02,2 8,7 97 46,1 0,91 491 16,1 4,42 942

00051 4,71 70,2 9,6 07 45,1 8,61 271 25,1 6,12 022

00041 3,61 49,1 1,6 26 44,1 8,41 151 24,1 0,91 491

00031 1,51 18,1 3,5 45 53,1 9,21 231 33,1 6,61 961

00021 0,41 86,1 6,4 74 52,1 1,11 411 32,1 3,41 641

00011 8,21 55,1 9,3 04 61,1 5,9 79 41,1 2,21 421

00001 6,11 24,1 3,3 33 60,1 0,8 18 40,1 2,01 401

0009 5,01 92,1 7,2 72 69,0 6,6 76 59,0 4,8 68

0008 3,9 61,1 2,2 22 68,0 3,5 45 58,0 8,6 96

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3.12 Eolo Mini technical specifications.

* Control temperature at domestic water flow rate at

8 l/min. and input temperature of 15C.

Flue temperature values refer to air inlet tempera-

tures of 15C.

tupnitaehlanimoN

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39

IMMERGAS S.p.A. 42041 Brescello (RE) Italy

INTERNEThttp: //www.immergas.com

Cod. 1.017061 Rev. 15.010710/000 - 12/00

15010710.pdf1 Boiler installation 1.1 Warnings. 1.2 Main dimensions. 1.3 Connection unit (supplied as standards with the boiler). 1.4 Installing air intake and flue exhaust terminals. 1.5 Flue exhaust via flues. 1.6 Chimneys/Flues.1.7 System filling. 1.8 Gas system start-up. 1.9 Boiler start-up (ignition). 1.10 Circulation pump. 1.11 Kits available on request. 1.12 Eolo Mini boiler components. 2 Operation and maintenance instructions 2.1 Preliminary testing free-of charge. 2.2 Cleaning and Maintenance. 2.3 General Warnings. 2.4 Eolo Mini - Control Panel. 2.5 Heating system pressure. 2.6 Draining the system. 2.7 Anti-freeze protection. 2.8 Casing cleaning. 2.9 Decommissioning. 3 Boiler start-up (preliminary testing) 3.1 Eolo Mini electrical circuit diagram. 3.2 Electronic card function options. 3.3 Eolo Mini hydraulic circuit diagram. 3.4 Troubleshooting. 3.5 Converting the boiler to other types of gas. 3.6 Checks following conversion to other type of gas. 3.7 Eolo Mini adjustments (when required). 3.8 Adjustment of Eolo Mini boiler slow ignition. 3.9 Casing disassembly. 3.10 Annual appliance maintenance. 3.11 Eolo Mini variable heating power. 3.12 Eolo Mini technical specifications.

Eolo Mini User Manual.pdf

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Transcript of Eolo Mini User Manual.pdf