Ferroli GN1 N User manual

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GN1 N
CAST IRON HIGH EFFICIENCY SECTIONAL BOILER,
FOR GAS/OIL FUELS
3544083/1 - 03/2002

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• Toguaranteeefficientoperation,theappliance
must be serviced once a year by an authorised
servicecentre.
• The appliance may not be used for purposes
other than those for which it was explicitly
designed.Anyotheruseisconsideredimproper
andthereforedangerous.
• Incorrectinstallationanduseorfailuretofollow
the instructions provided by the manufacturer
absolve the manufacturer from all liability for
damage.
• After unpacking, check that the contents are
wholeandundamaged.
• Keeppackagingoutof reach of children as it is
potentiallyhazardous.
• To clean external parts, use a damp cloth
moistenedwithsoapywaterifnecessary.Avoid
usingabrasivecleaningproductsandsolvents.
General instructions
• Readthewarningsgiveninthismanualthoroughly.
They provide important information for safe
installation,useandmaintenance.
• Keepthemanualcarefullyforfutureconsultation.
• Theinstructionmanualisanintegralandessential
partoftheproductandmustbekeptbytheuser.
• Iftheapplianceissoldortransferredtoanother
owneroriftheownermoves,leavingtheappliance
behind,alwaysensurethatthemanualiskeptwith
theapplianceforconsultationbythenewowner
and/orinstaller.
• Incorrectinstallationorpoormaintenanceabsolves
themanufacturerfromallliabilityfordamageto
peopleorthings.
• Installationandmaintenancemustbecarriedout
inconformitywithcurrentlegislation,according
tothemanufacturer'sinstructionsandbyqualified
personnel.
• Beforecleaningormaintenance,disconnectthe
appliance from the mains via the switch on the
applianceorasuitableisolatingdevice.
• In the event of malfunction or faulty operation,
deactivatetheappliance.Donotattempttorepair
orcarryoutanyotheroperationontheappliance
directly.Contactqualifiedpersonnelonly.
• Repairsorthereplacementofcomponentsmust
becarriedoutexclusivelybyqualifiedpersonnel
usingoriginalsparepartsonly.Failuretorespect
the above may compromise the safety of the
appliance.
Mars
The CE mark indicates that the appliance
satisfies all the essential requisites of the gas
appliance directive (90/396/CEE) and the
technical standards referred to.

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Index
1.Technicalinfor mations ........................................................................................................................... 4
2. Dimensionsandtechnical data ............................................................................................................. 5
3. Packingandshipment ........................................................................................................................... 6
4. Installation ............................................................................................................................................. 7
5. Testing ................................................................................................................................................... 8
6. Service ................................................................................................................................................... 9

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Fig. 1
1. TECHNICAL INFORMATIONS
1.01 Introduction
GN1 N boiler is a new heating generator with high efficiency, for central heating system as well sanitary hot water
production suitable for burners using oil or gas.
The boiler body is built by cast iron sections joined togheter by mean of biconical nipples and tie rods. Sections fins
areespecially developedto achievethe bestefficiencyoftheboilerinorder tosave onfuel consumption.The boiler
body insulation is provided by mineral high density fibers that minimizes the body heat lost.
Key
1 Timer sochet
2 Thermomanometer
3Security thermostat manual resetting
4Main switch
5 Control thermostat
1.02 Control and securities devices operation
Regulating thermostat, manual resetting 3 (fig. 1)
Itoperateswhenthe boilertemperature,duringthe heatingmodereachsuch alevelthatcan useadangersituation.
Before resetting this thermostat ask for Qualified Serviceman to inspect the appliance.
Central thermostat 5 (fig. 1)
It allows to control the boiler temperature by mean of its knobs.
This thermostat controls the burner.
Room thermostat (not supplied)
This device is not supplied, but can be fitted by installer, it is connected in series to the control thermostat and it
manages both the burner and the circulating pump during the heating mode. The use of such appliance is advised
to get a better comfort as well on energy saving.
1 3 452

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Fig. 2
2. DIMENSIONS AND TECHNICAL DATA
2.01 Dimensions and technical data (fig. 2 - tab. 1)
Key
a1 Flow 11/2"
a2 Return 11/2"
a3 Boiler drain 11/2"
N.B.: - Max. water temperature for the heating system is 90°C. - Min. water temperature for the heating system is
45°C.
Water
load losses
Model
Heat and
D.H.W.
(gross)
gas
Max.
28,6
43
57,3
71,6
86,1
100,4
114,7
Heat and
D.H.W.
output
Max.
23,3
34,9
46,5
58,1
69,8
81,4
93,0
Heat and
D.H.W.
(net)
gas+oil
Max.
25,8
38,7
51,6
64,5
77,5
90,4
103,3
Heat and
D.H.W.
(gross)
gas
Min.
18,2
18,2
39,3
49,1
59,1
68,8
78,6
Heat and
D.H.W.
(net)
gas+oil
Min.
16,4
16,4
35,4
44,2
53,2
62,0
70,8
Heat and
D.H.W.
output
Min.
15,0
15,0
32,5
40,5
48,8
57,0
65,0
N°
element
2
3
4
5
6
7
8
Water
capacity
dm3
11
14
17
20
23
26
29
Combustion
chamber
lenght
mm
286
386
486
586
686
786
886
Combustion
chamber
dimension
Ømm
260x310
260x310
260x310
260x310
260x310
260x310
260x310
Model
GN1 N 02
GN1 N 03
GN1 N 04
GN1 N 05
GN1 N 06
GN1 N 07
GN1 N 08
GN1 N 02
GN1 N 03
GN1 N 04
GN1 N 05
GN1 N 06
GN1 N 07
GN1 N 08
Working
pressure
bar
4
4
4
4
4
4
4
A
300
400
500
600
700
800
900
B
105
105
105
105
125
125
125
Ø
130
130
130
180
180
180
180
Combustion
chamber
load loss
∆p mbar
0,2
0,2
0,2
0,2
0,2
0,2
0,2
Combustion
chamber
volume
dm
3
12,09
20,15
28,21
36,27
52,39
60,45
68,51
∆t
10
1
1,8
4,2
7,2
11
15
20
∆t
20
-
-
1
1,6
2,3
3,3
4,5
Weight
of unit
kg.
75
100
125
150
175
200
225
a1
a2 a3
400
850
270
B
A
Ø
85
542
711
1” 1/2
1/2”
64
80
1” 1/2

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2.02 Pressure drop (fig. 3)
Pressure drops according to the boiler size are specified on the following diagram and refer to temperature
difference between flow and return comprises between 10 and 20°C.
Fig. 3
3. PACKING AND SHIPMENT
Boiler is delivered complete assembled in a wood crate.
Fig. 4

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d4
159
c
13
a
B4
T2 S3T1
N
L1
LN
98
160
14192345678 1011 12 13
72
32
230V 50Hz
15 16
123 4 56 7 8 9 101112 123 4 56 7 8 9 101112
C
1
2
63
49
2
c
211
189
4. INSTALLATION
It is law that all gas appliances are installed by Competent Persons, in accordance with the regulations. Failure to
install appliances correctly lead to prosecution, it is your own interest, and that of safety, to ensure that the law is
copliedwith. Manufacturers instructionsmustNOT be takenin any wayas over-riding statutoryobligations, special
care must be paid to conform with law and regulation concerning building and location of the chimney.
4.01 Electrical connection
Proceed to wire pump, burner and optional room thermostat. According to the wiring diagrams (fig.5) and to the
directionsattached to thecables. Itisrecommended toinstall a two-poleswitch between thepower supplyandthe
boiler. The switch contacts must have a clearance of at least 3 mm and fuses of 5 A max must be provided.
N.B. - Appliance must be earthed.
It is recommended to connect the boiler to a good electric earth system.
FERROLI could not be considered responsable for any kind of damage to Persons or things caused by
failure of earthing the system.
Fig. 5a
Key
32 Central heating pump
49 Overheat cut-off thermostat
63 C.H. boiler thermostat
72 Room thermostat (not fitted)
98 Switch
159 Test knob
160 Auxiliary contact
189 Boiler shut down warming
211 Burner connector
Note = Dotted lines indicate connections to be performed during installation

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Electrical diagram
4.02 Hydraulic connections
Boiler must be connected to the system according to boiler back part indications and those provided at fig. 2. Pipe
mustbe free ofanykind of strainand security valvesmust be providedinboth central heatingsystem and domestic
hotwatersystemlocationofsuchsecurityvalvesbeascloseispossibletotheboilerandbetweentheboilerandvalve
no obstructions or gate valves must be placed.
The boiler is not supplied with expansion tank it has to be provided during the boiler installation. It is advised that
the pressure in the hydraulic system has to be between 0,5 and 1 bar measured in cold water condition.
4.03 Connection to the chimney
It is recommended to connect the boiler to a good working chimney built according to the regulations. The
connectionbetweenboilerandchimneymustbedonebyusingsuitablematerialproofagainsthightemperatureand
corrosion.Whereflue sections haveto be connected itis advised payattentionto avoid leakingand provided good
insulation through all the flue length to avoid condensing problem.
16
4
5
13
3
159 d
4
4
11
10
B4
T2
S3
T1
N
L1
189
C
21
c
2
49
211
1a
3C
98
9160
10
11 72
12
63
1
L
8
32
6
7
15
14
2
N
3
230V
50Hz
1
25
Fig. 5b
Key
32 Central heating pump
49 Overheat cut-off thermostat
63 C.H. boiler thermostat
72 Room thermostat (not fitted)
98 Switch
159 Test knob
160 Auxiliary contact
189 Boiler shut down warming
211 Burner connector
Note = Dotted lines indicate connections to be performed during installation

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5. TESTING
5.01 Before the first light of the boiler
Before the first light of the boiler follow these check list:
a) check the system is filled with water at the right pressure;
b) check against any leakage of water fuel;
c) check that the correct electric power is supplied to the unit;
d) check size and perfect flue installation;
e) check against any type of flammable materials where the boiler is installed;
f) check the burner has the right heat input according to the boiler size;
g) control that the water valves are open.
5.02 First lighting
After the boiler preliminaries checking , the appliance can be lights in the following way;
1) Open the fuel gate valve.
2) Set the regulating thermostat at the required temperature level.
3) Give electric power to the boiler and switch on the main switch 4 (fig. 1) on the boiler control panel.
After above operations the burner will start to run and the boiler will begin to work.
5.03 After the first lighting
After the first lighting it is advisable check:
burner works properly, this checking must be done by appropriate instruments.
Thermostats operate correctly.
Water flows through the system.
Smoke gases evacuate through the flue duct.
5.04 Switch off
To turn off the unit for a short period it is enough to switch off the switch 4 (fig. 1) on the control panel.
Iftheboilerhastobestoppedforlongperiodbesidetoactbytheswitch4,itisnecessarytocutthesupply
offuelbymeanofthegatevalve,inwinterseason,toavoiddamagesduetothefrostitisnecessaryto
addtheantifrostliquidinthesystemortodrainitcompletely.

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6. SERVICE
The after sale service must be carried out only Qualified Plumbers. It is advise to service the boiler at least once a
year,beforethewinter season.Checkmustincludethe boilercleaning,theperfectoperationofthecontrolsandthe
burner.
Furthermore the flue duct conditions have to be inspected.
6.01 Boiler cleaning
Cut out electric power.
The front panels 1, 2, 3 (fig. 6).
Clean the boiler internal parts.
Check the flue duct and if necessary clean it.
The burner service must be done according the Manufacture Instructions.
Tube Brush
Fig. 6
12
3