Ferroli GN2 N Operating, Installation And Maintenance Instructions

GN2 N

high-efficiency cast iron boiler for liquid fuels and/or gas
OPERATING, INSTALLATION AND MAINTENANCE INSTRUCTIONS
caldaia di ghisa ad alto rendimento per combustibili liquidi e/o gassosi
ISTRUZIONI PER LUSO LINSTALLAZIONE E LA MANUTENZIONE
chaudière en fonte a haut rendement pour combustibles liquides et/ou gazeux
INSTRUCTIONS POUR LINSTALLATION ET LENTRETIEN
heizkessel aus gusseisen mit hohem wirkungsgrad für flüssige und/oder gasförmige brennstoffe
INSTALLATIONS-, BEDIENUNGS- UND WARTUNGSANLEITUNGEN
caldera de fundición, de alto rendimiento para combustibles líquidos y/o gaseosos
INSTRUCCIONES DE USO, INSTALACIÓN Y MANTENIMIENTO
caldeira em ferro fundido de alto rendimento para combustíveis líquidos e/ou gasosos
INSTRUÇÕES PARA O USO, INSTALAÇÃO E MANUTENÇÃO
verwarmingsketel in gietijzer met hoog rendement voor vloeibare en/of gasvormige brandstof
AANWIJZINGEN VOOR HET GEBRUIK, DE INSTALLATIE EN HET ONDERHOUD
støbejernsfyr med øget udbytte til flydende brændstof og/eller gas
INSTRUKTIONER VEDRØRENDE BRUG, INSTALLATION OG VEDLIGEHOLDELSE

GB

IT

FR

DE

ES

PT

NL

DK

TR

co d. 3544122/ 6 - 11/20 06

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sivi ve/veya gaz yakitli yüksek ver‹ml‹
DÖKÜM DÖLMLÖ KAZAN

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GN2 N

Dear Customer,
Thank you for having chosen the GN2 N, an advanced-concept Ferroli boiler featuring cut­ting-edge technology, high reliability and constructional quality. Carefully read this manual
and keep it for future reference.
The GN2 N is a high-effi ciency heat generator for the production of hot water for heating
purposes, suitable for operation with jet burners on gas or liquid fuel.
The boiler body consists of cast-iron elements, the shape of which, together with the careful
design of the fi ns, ensure high heat exchange effi ciency in all operating conditions.

Important warnings

• This manual provides important indications on the safety of
operation, installation and maintenance, and is an integral
and essential part of the product. Read this manual before
installation and operation. It should be carefully kept for future
reference.

• This appliance must only be used for the purposes it has been
specifi cally designed for. This appliance is used to heat water
to below-boiling temperatures at atmospheric pressure, and
must be connected to a heating and/or domestic hot water di­stribution system, according to its characteristics, performance
and heating capacity. All other uses are considered improper
and thus dangerous.

• The appliance may not be opened nor its components tam­pered with, except for the parts included in the maintenance
operations. The appliance may not be modifi ed to alter its
performance or use.

• The installation and maintenance operations must be perfor­med according to the standards in force, the instructions of
the manufacturer and must be carried out by professionally
qualifi ed personnel.

• Incorrect installation or poor maintenance may cause damage
to people, animals or things. The manufacturer declines all
liability for damage deriving from errors in the installation and
operation of the appliance, and in any case from the failure to
observe the instructions provided.

• Before performing any cleaning or maintenance operations,
disconnect the appliance from the mains power supply using
the system switch and/or the corresponding on-off devices.

• In the event of faults and/or poor operation of the appliance, it
should be deactivated. Do not attempt to repair the appliance.
Contact professionally qualifi ed personnel only.

• After having removed the packaging, check that the contents
are intact. The parts of the packaging must not be left within the
reach of children, as they are potential sources of danger.

ENGLISH

Electrical power
supply

Max operating
pressure temperature

PIN

Serial number

Max operating
pressure

Heat output

Uselful heat output

Bar code

Water content

12/245

0085AS0420

0085

230V~50Hz IP

X 0D

Ser. n. 0352L50349

Q
P

-

-

kW
kW

234,7
216

max

185
171

min

PMS
tmax

6

100

bar
°C

PMW
D

bar
l/min

Appr. nr.

H2O

105 L

Certifi cation

The CE Mark attests that Ferroli appliances conform
to the requirements specifi ed in the applicable Eu-
ropean directives.
In particular, this appliance conforms to the following
EEC directives:

• Gas directive 90/396

• Effi ciency directive 92/42

• Low voltage directive 73/23 (amended by 93/68)

• Electromagnetic compatibility directive 89/336
(amended by 93/68)

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2

GN2 N

1. OPERATING INSTRUCTIONS

1.1 Control panel

1 2 3

4

5

1.2 Ignition

Move the main switch 5 to position “I” to power the boiler and the burner. Refer to the burner manual for the operation of this device.

1.3 Setting

Set the desired system temperature using the control thermostat 4. If the thermoregulation control unit (optional) is connected, refer to the
corresponding instruction manual.

1.4 Shut-down

For brief periods of inactivity, simply move switch 5 (Fig. 1) on the control panel to position “0”.
For extended periods of inactivity, as well as operating switch 5, the fuel on-off valve must also be closed.
For extended periods of inactivity during the winter period, to avoid damage from frost, add special antifreeze to the system or drain the system
completely.

1.5 Anomalies

Two lockout conditions may occur that can be reset by the user:

a - Burner lockout signalled by the corresponding light 6 (Fig. 1). Refer to the burner manual.
b - Activation of the safety thermostat when the temperature in the boiler reaches the limit value above which a dangerous situation may arise.

To reset operation, unscrew cap 3 and press the reset button.

If the problem occurs again, contact qualifi ed personnel or the service centre.
In the event of faults and/or poor operation of the appliance, it should be deactivated. Do not attempt to repair the appliance. Contact profes­sionally qualifi ed and authorised personnel only.

2. INSTALLATION

General instructions

This appliance must only be used for the purposes it has been specifi cally designed for. This appliance is used to heat water to below-boiling
temperatures at atmospheric pressure, and must be connected to a heating and/or domestic hot water distribution system, according to its
characteristics, performance and heating capacity. All other uses are considered improper.

THE BOILER MUST ONLY BE INSTALLED BY QUALIFIED AND SPECIALIST PERSONNEL, IN COMPLETE COMPLIANCE WITH
ALL THE INSTRUCTIONS REPORTED IN THIS TECHNICAL MANUAL, THE LEGAL STANDARDS IN FORCE, THE PRESCRIP­TIONS OF ANY NATIONAL AND LOCAL STANDARDS, AND ACCORDING TO THE RULES OF GOOD PRACTICE.

Incorrect installation may cause damage to people, animals and things. The manufacturer will not be held liable in such events.

Place of installation

The room in which the boiler is installed must have ventilation openings to the outside according to the standards in force. If the same room
features a series of burners or exhaust devices that can operate at the same time, the ventilation openings must be large enough for the
simultaneous operation of all the appliances.
The place of installation must be free of fl ammable objects or materials, corrosive gas, dust or volatile substances that, sucked in by the bur-
ner’s fan, may block the internal tubing of the burner or the combustion head. The environment must be dry and not exposed to rain, snow or
frost.

Positioning the boiler

The minimum spaces shown in the fi gure must be complied with. Specifi cally, make sure that after as-
sembling the boiler with the burner on the front door, the latter can be opened without the burner hitting
against the wall or any other boiler. Leave a free space of at least 100mm on the side that the door swings
towards.

6

100
mm

550==

Key

1 Ready for electronic control unit
2 Thermohydrometer
3 Safety thermostat
4 Control thermostat, 2 Stages
5 Line switch “0 - I - TEST”
6 Burner lockout indicator light

fi g. 1

fi g. 2

Burner

co d. 3544122/ 6

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GN2 N

2.1 Water connections

Make the water connections to the appliance according to the indications shown both next to each fi tting and in Figure 2 of this booklet.
The connections must be made in such a way that the pipes are not under stress. The safety valve must be fi tted in the central heating circuit,
as close as possible to the boiler, without there being any obstructions or on-off devices between the boiler and the valve.
The appliance is not supplied with an expansion vessel, and therefore such device must be connected by the installer. Please note that in this
regard, the pressure in the system, when cold, must be between 0.5 and 1 bar.

2.2 Connecting the burner

Oil or gas jet burners for pressurised furnaces can be used if their operating characteristics are suitable for the dimensions of the boiler’s
furnace and its over-pressure value. The burner must be chosen following the instructions provided by the manufacturer, according to the fi eld
of operation, fuel consumption and pressure, as well as the length of the combustion chamber.
Fit the burner following the instructions provided by the manufacturer of the device.

2.3 Electrical connections

The boiler should be connected to a single-phase, 230 Volt-50 Hz electrical line, using a permanent connection, installing a double pole switch

with contact openings of at least 3mm, and suitable fuses. Connect the burner and the room thermostat (if featured) as shown in the
wiring diagram in Chap. 4.
The electrical safety of the appliance is ensured only when the appliance is correctly connected to an effective earth system, as

prescribed by the safety standards in force. Have professionally qualifi ed personnel check the effi ciency and the rating of the earth
system. The manufacturer is not liable for any damage caused by the appliance not being correctly earthed. In addition, make sure that the
electrical system is adequately rated for the maximum power absorbed by the appliance, indicated on the rating plate, and in particular that
the cross-section of the wires is suitable for the power absorbed by the appliance.

2.4 Flue connections

The boiler should be connected to a suitable fl ue, manufactured in compliance with the standards in force. The pipe between boiler and the fl ue
must be made from material suitable for this purpose, that is, resistant to both high temperatures and corrosion. The joints should be carefully
sealed and the entire length of the pipe between the boiler and the fl ue should be thermally insulated, to avoid the formation of condensate.

2.5 Assembling the boiler

The boiler may be supplied:

1. As a set of elements, in 4 separate boxes, containing the Casing, Control panel, Elements, and accessories for assembling the elements.
Follow the instructions enclosed with the set of elements to assemble the boiler body. Follow the instructions below to assemble the casing

and control panel.

2. With the body already assembled, in 3 separate boxes containing the Casing, Control panel and Boiler body.
Follow the instructions below to assemble the casing and the control panel.

Cover type 5 Cover type 5 Cover type 1, 2, 3 e 4Cover type 5 Cover type 1, 2, 3 e 4

Cover type 1, 2, 3 e 4

Version 13-14 Elements

R and L sides

Type: 1,2,3,4

Reversible

side

Reversible

side

L

B440440 57

Version 9-12 Elements

R and L sides

Type: 1,2,3,4

Reversible

side

L

B440 57

AA

Version 5-8 Elements

R and L sides

Type: 1,2,3,4

B

57

A

Quantity

GN2 N
GN2 N
GN2 N
GN2 N
GN2 N
GN2 N
GN2 N
GN2 N
GN2 N
GN2 N

L

5
6
7
8

9
10
11
12
13
14

604
714
824
934
604
714
824
934
604
714

Model

A B

547
657
767
877
547
657
767
877
547
657

/
/
/

/
1044
1154
1264
1374
1484
1594

Cover

type

R side

type

Rev. side

2
2
2
2
4
4

N° Elem.

1
1

1

1

2

1

1

1

3

1

1

4

1

1

1
1

1

1

2

1

1

1

3

1

1

4

1

1

1
1

1

1

2

1

1

1

3

1

1

4

1

1

5

1
1
1
1
2
2

L side

type

C Prepare the right and left sides, choosing the quantity of side panels according to the dimensions of the boiler (see table).

A

B

C

1

1

2

2

2

2

A If the boiler body is supplied already

assembled and is delivered from the
factory on a pallet, remove the bolts 1
that fasten it to the pallet and position
it for fi nal installation. Then assemble
the various panels.

B Fit the rear panel 1 on the studs 2 and

loosely tighten the bolts.

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GN2 N

E F

G

H

I

L

M

N O

P

Q

D

B

A

B

A

B

A

A

B

B

A

B

A

A

A

A

D Connect the panels together, using the screws 1, the washers 2 and the nuts 3,

reinforcing the bottom parts using the blades 4 fastened with the screws 5.

E Loosen the nuts “A”.
F Insert the side fastening bracket “A” between nuts “A” and “B”.

G Fit the side to the bracket “A” and fasten it using the screws “B” (right side view). Repeat the

operations in point G for the left side.

H Fasten the sides to the rear wall “A” using the screws “B”.
I Unwind the hydrometer capillary tubing and tighten its connector to the sheathing on the front

of the boiler body.

L Fit the wiring protection case “A” using the screws “B” on the sides.

M Fit the control panel to the sides using the tabs “A”. Place the

reinforcement spring “B” between the head of the screw and
the tab.

N Insert the 3 bulbs (safety thermostat, boiler thermostat and

thermohydrometer).

O Fit the lower front panel “A”.

P Fit the upper panel “A”.
Q Fit the top cover or covers “A”, according to the length of the boiler (see table 1, sequence C).

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GN2 N

3. SERVICE AND MAINTENANCE

All the adjustment, commissioning and maintenance operations must be performed by Qualifi ed Personnel, in compliance with the standards
in force.
FERROLI S.p.A. declines all liability for damage to persons and/or things deriving from the tampering with the appliance by unqualifi ed or
unauthorised persons.
Before performing any cleaning or maintenance operations, disconnect the appliance from the mains power supply using the system switch
and/or the special on-off devices.

3.1 Commissioning

Checks to be performed on fi rst ignition, and after all maintenance operations that involve the disconnection of the appliance from the systems
or intervention on the safety devices or parts of the boiler:

Before fi rst ignition

Before igniting the boiler for the fi rst time, check that:

a the system is fi lled at the right pressure and any air has been correctly vented;
b there are no water or fuel leaks;
c the electrical power supply is correct;
d all the fl ues have been installed correctly and not too near to or across any fl ammable parts;
e there are no fl ammable substances near the appliance;
f the burner is suitably sized for the output of boiler;
g the water on-off valves are open.

First ignition

After having carried out the preliminary checks, the following ignition operations can be performed:

1 Open the fuel on-off valve.
2 Set the thermostat 4 (Fig. 1) to the desired value.
3 Close the switch upstream from the boiler and switch 5 (Fig. 1) on the control panel.

At this stage, the burner will be ignited and the boiler will start operation.

After fi rst ignition

After fi rst ignition, check that:

1 The door of the burner and smokebox are well sealed.
2 The burner is working correctly. This check should be performed using the required instruments, following the manufacturer’s instruc-

tions.

3 The thermostats are working correctly.
4 Water is circulating in the system.
5 The fl ue gas is completely expelled through the fl ue.

3.2 Adjustments

Adjusting the burner

The effi ciency and correct operation of the boiler depend above all on accuracy of the adjustments made to the burner.
Carefully follow the instructions provided by the manufacturer. Two-stage burners must have the fi rst stage adjusted to an output that is no

lower than the minimum rated output of the boiler. The output of the second stage must not be greater than the maximum rated output of
the boiler.

3.3 Shut-down

For brief periods of inactivity, simply use switch 5 (Fig. 1) on the control panel.
For extended periods of inactivity, as well as operating switch 5, the fuel on-off valve must also be closed.

3.4 Maintenance

To ensure the maximum reliability of the heating system and minimum running costs, the boiler must be cleaned regularly, at least once a year.
These maintenance operations must be performed by qualifi ed and specialist personnel.

Cleaning the boiler

1 Disconnect the power supply to the boiler
2 Remove the upper and lower front panel.
3 Open the door by unscrewing the knobs.
4 Clean the inside of the boiler and the entire fl ue gas discharge path, using a brush or compressed air.
5 Close the door again, and fasten it using the knob.

To clean the burner, refer to the instructions provided by the manufacturer.

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GN2 N

4. TECHNICAL SPECIFICATIONS

Water

pressure

drop

Model

GN2 N 05
GN2 N 06
GN2 N 07
GN2 N 08
GN2 N 09
GN2 N 10
GN2 N 11
GN2 N 12
GN2 N 13
GN2 N 14

98,8
116,0
136,9
156,5
176,0
195,6
215,2
234,7
254,3
273,9

Max

80

95
110
125
140
155
170
185
200
215

Min

Heat output

kW

90
107
126
144
162
180
198
216
234
252

Max

73

87
101
115
129
143
157
171
185
199

Min

Heat input gas+oil

(NHV) kW

5
6
7
8

9
10
11
12
13
14

N°

elem.

49
57
65
73
81
89

97
105
113
121

Water

content

dm3

6
6
6
6
6
6
6
6
6
6

Operating

pressure

bar

647
757
867

977
1087
1197
1307
1417
1527
1637

A

mm

130
130
130
154
154
154
154
154
154
154

B

mm

180
180
180
200
200
200
200
200
200
200

Ø

mm

0,4
0,4
0,4
0,4
0,4
0,4
0,4
0,4
0,4
0,4

Comb.
chamber
pressure

drop

Dp mbar

310
361
412
463
514
565
616
670
725
780

Body

weight

kg

-

­0,5
0,8
1,8
2,2
2,6
3,2

4

4,5

Dt 20

2,8
3,4
4,8
6,5
8,5

11
13
16
19
23

Dt 10

63
77

91
104
118
132
146
160
174
187

Comb.

chamber

volume

dm3

1 2 3

4

56

375

1196

B

Ø cam. comb.

Lg cam. comb.

A

600

867

A1

A2

A3

84

726

C

Legenda

1 Ready for electronic control unit
2 Thermohydrometer
3 Safety thermostat
4 Control thermostat, 2nd Stage
5 Line switch
6 Burner lockout indicator light
a1 Central heating fl ow outlet DN80 - 3”
a2 Central heating return inlet DN80 - 3”
a3 Boiler drain 3/4”

32 Pump (not supplied)
49 Safety thermostat
72 Room thermostat (not supplied)
98 Switch
114 Water pressure Switch
159 Test knob
170 Boiler setting thermostat, 1st stage
171 Boiler setting thermostat, 2nd stage
211 Burner connector

fi g. 3

fi g.4

Note The dashed sections of wiring are
the responsibility of the installer

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