Nouvelle Elite 100

WALL MOUNTED, NATURAL DRAUGHT

GAS COMBINATION BOILER

TECHNICAL
INFORMATION
INSTALLATION
and
SERVICE
INSTRUCTIONS

Phone numbers:
LEAVE THESE INSTRUCTIONS
Installer ________________________ ADJACENT TO THE GAS METER

Service Engineer _________________

ALL SPECIFICATIONS SUBJECT TO CHANGE

NOTE - Technical details involving gas compositions refer to standard gas only.
 FERROLI NOUVELLE ELITE 100

GENERAL INFORMATION ON INSTALLATION

Gas Safety (Installation and Use) Regulations

It is law that all gas appliances are installed by competent persons, in accordance with the Regulations.
Failure to install appliances correctly could lead to prosecution.
It is in your own interest, and that of safety, ensure thet the law is complied with. Manufacturers instruction
must NOT be taken in any way as over-rideing statutory obligations.

NOTE - Technical details involving gas compositions refer to standard gas only.

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 FERROLI NOUVELLE ELITE 100

WALL MOUNTED, NATURAL DRAUGHT

GAS COMBINATION BOILER
Technical Information
PAGE LIST of CONTENTS

1 11 General
1 Front page
2 General informations on installation
3 List of contents
4 Technical data
5 Phsycal dimensions
6 Important components
7 General description
8 Boiler flow diagram
9 Key to boiler flow diagram
10 D.H.W. performance
11 Pump performance curve and bypass C.H.

12 25 Installation
12 Minimum siting dimensions standard installation
13 Air supply - Flue system
14 Typical installation of pipework bypass and fitting
additional expansion vessel
15 Jig assembly (optional)
16 Electric supply
17 Filling C.H. - Flushing C.H. - Descaling D.H.W.
18 General explanation on operation
19 Commisioning and general check out
20 Modulating regulator (Modureg) of gas valve
20 Adjustments and checkout gas valve Honeywell
21 Adjustments and checkout gas valve SIT
22 C.H. output adjustment
23 Burner pressures C.H.
24 Wiring diagram
25 Mounting details

26 33 Servicing
26 General fault finding - Cleaning and Maintenance
27 Faults finding causes and remedies
29 Spare parts list

32 To Light the Boiler

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 FERROLI NOUVELLE ELITE 100

Technical data
NATURAL GAS (G20) LPG PROPANE (G31)

Nominal heat input (combined C.H. & D.H.W.) 25.8 kW 25.8 kW 25.8 kW
Nominal heat output (combined C.H. & D.H.W.) 23.3 kW 23.3 kW 23.3 kW
Minimum heat out. (combined C.H. & D.H.W.) 9.3 kW 9.3 kW 9.3 kW
Gas rate (nominal) 2.73 m3 S/h / 1.983 kg/h
Burner setting pressure 13 mbar (max) 28 mbar (max) 36 mbar (max)
Minimum burner pressure 2.5 mbar (min.) 7 mbar (min.) 8 mbar (min.)
Main injector 2.25 mm 1.20 mm 1.20 mm
Pilot injector 0.51 mm 0.25 mm 0.25 mm
Dimensions (o/all)
Height 800 mm
Width 445 mm
Depth 360 mm
Weight (net) 45 kg
Weight (gross) 47 kg
Flue duct: nominal size 130 mm
Electric supply: 230 V 50 - Hz
Fuse rating:
Mains 3 Amp. (main fuse)
on P.C.B. in boiler 1 Amp. Fast
Power requirement 160 Watts
Domestic hot water flow:
(25 30 C rise) 1311 l/min.
Safety valve pressure setting 3 bars
Minimum incoming mains flow 2.5 l/min.
Maximum domestic cold water
Inlet pressure: 5.0 bars
Expansion vessel capacity 7 litres
Min. heating circuit pressure 0.8 bars
Max. heating circuit pressure 3.0 bars
Boiler water capacity:
Heating 1.5 litres
Domestic hot water 0.5 litres
Pipe connections:
Gas 3/4 in. BSP
Domestic cold water inlet 1/2 in. BSP
Domestic hot water outlet 1/2 in. BSP
Central heating flow 3/4 in. BSP
Central heating return 3/4 in. BSP
Pressure relief valve drain 1/2 in. BSP
Min. installation clearances. Sides:
Left hand 20 mm
Right hand 20 mm
Front 50 mm
(plus access for service) NOTE - LPG is a mixture of Propane
and
Min height from worktop to base 300 mm Butane.

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 FERROLI NOUVELLE ELITE 100

Physical dimensions (mm)

min.
500

Key
1. Electricity cable entry
2. Gas supply
3. Domestic hot water outlet
4. Domestic cold water inlet
5. Central heating pressure relief valve
6. Central heating flow outlet Fig. 4
7. Central heating return inlet

Note - Without C.H. expansion vessel, the pipework can pass up the back of the boiler.

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 FERROLI NOUVELLE ELITE 100

Important components

Fig. 2

Fig. 1

Fig. 3

Inside the boiler

On control panel 6 22 - Burner (4)
60 - Extended control knob gas valve 32 - Central heating pump
61 - C.H./D.H.W. selector switch 40 - Filling cock
63 - C.H. boiler thermostat 44 - Combination gas valve
67 - Ignition transformer 75 - Copper heat exchanger for C.H. + D.H.W.
68 - Control box with P.C.B. 114 - Water flow switch
145 - C.H. pressure gauges 126 - Flue gas safety thermostat
157 - D.H.W. boiler thermostat 136 - Flowmeter

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 FERROLI NOUVELLE ELITE 100

General description

The Nouvelle Elite 100 is wall mounted, natural draught, combination boiler for central heating and domestic
hot water. The boiler is of light weight construction and the unit provides central heating and domestic hot
water from an integrally designed double heat exchanger. The appliance is suitable for sealed systems only,
and is not suitable for external installation. An expansion vessel is incorporated. The wall mounting jig
contains connections for the water and gas supplies. This can be fitted to the wall and provides all the
necessary gas and water connections prior to the boiler being attached.

Important details
22 Stainless Steel gas burner for the complete and safe combustion of Natural Gas (and on request L.P.G.).

32 Central heating pump with 3 speed switch, perfectly adaptable to the nature of the central heating
system. This avoids necessary electrical power consumption and noise problems.
The pump is switched ON/OFF by the time clock (if fitted) and/or a 24 Volt room thermostat.
The pump circuit also has a 6 minute over/run time.

40 Filling cock for to fill the central heating system from Domestic Cold Water net.

44 Combination gas valve, providing on/off and modulating control of the gas burner.

61 Selector switch with 4 positions:

Off
Domestic hot water only
Domestic hot water and central heating
Test (Lighting)

68 Control box with printed circuit board (P.C.B.). The central heating and the domestic hot water
temperature is controlled by the Honeywell Modureg gas valve (44) in conjunction with the P.C.B. and
the two sensor for C.H. (34) and D.H.W. (42). The C.H. temperature can be set with the C.H. boiler stat
(63). The D.H.W. temperature is factory set on the P.C.B. There is a limit thermostat (50) on the central
heating circuit which operates at 85 C. There is also on overheat cut/off thermostat (49) which will shut
the boiler and pilot down completely at 100 C. On the P.C.B. the maximum output for central heating
can be set. This does not influence the maximum output for domestic hot water!

73 Frost thermostat to protect the boiler in winter conditions. This thermostat activates the boiler as soon
as the heat exchanger temperature is too low, regardless of position of the controls (optional).

75 Copper heat exchanger for C.H. and D.H.W. The central heating water and domestic water are heated
up directly by the gas flame (in separatd circuits of course).
This system provides quick response (instantaneous), avoids heat losses and makes heating and
domestic hot water completely independant.

126 Flue gas safety thermostat which switches off the burner (pilot included) in case of flue losses under the
draft diverter (f.e. chimney blocked).

136 There is a domestic flowmeter fitted and when there is a demand for domestic hot water (flow of more
than 0,5 gallon/minute, 2.5 litres/minute) the central heating pump is switched off, making available the
maximum output of the gas burner for domestic hot water.

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 FERROLI NOUVELLE ELITE 100

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 FERROLI NOUVELLE ELITE 100

Key to boiler flow diagram

6. Control panel 42. D.H.W. temperature sensor

7. Gas inlet 44. Combination gas valve
8. Domestic hot water outlet 45. Knob gas valve
9. Cold water inlet 46. Operator gas valve
10. Central heating flow outlet 47. Modulating regulator (Modureg) gas valve
11. Central heating return inlet 48. Burner pressure test point
12. D.H.W. draining point 49. Overheat cut-off thermostat 100 C
13. Cold water draining point 50. Heat exchanger limit thermostat 85 C
14. Central heating safety valve 53. Heat exchanger venting point
20. Burner assembly 56. Expansion vessel
21. Main injector 60. Extended control knob to gas valve
22. Burner 61. C.H./D.H.W. selector switch
23. Thermocouple 63. C.H. boiler thermostat
24. Spark electrode 66. Microswitch combination gas valve
25. Pilot 67. Ignition transformer
26. Combustion chamber insulation 68. Control box with P.C.B.
32. Central heating pump 73. Frost thermostat predisposition
33. C.H. waterway of the heat exchanger 75. Copper heat exchanger for C.H. + D.H.W.
34. C.H. flow temperature sensor 78. Draft diverter
35. Air separator 80. Five pole terminal block (230 V + 24 V)
36. Automatic air vent 114. Water flow switch
37. Cold water inlet filter 126. Flue gas safety thermostat
39. Cold water flow limiter 136. Flowmeter
40. Filling cock 145. C.H. pressure gauges
41. D.H.W. waterway of the heat exchanger 157. D.H.W. boiler thermostat

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 FERROLI NOUVELLE ELITE 100

Domestic Hot Water Performance

Fig. 1 - D.H.W. Pressure Drop VS. flow

A = Standard with cold water Flow Restricter.
B = Cold Water Flow Restricter Removed.

Fig. 1

Fig. 2

Fig. 2 - D.H.W. temperature VS. flow

A = Cold Water 15 C
B = Cold Water 5 C

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 FERROLI NOUVELLE ELITE 100

Pump performance curve + Bypass C.H.

Boiler pressure loss 1 2 3 Speed settings

UPS 25/60 Grundfos

mH2O pressure head

UPS 25/50 Grundfos

Water flow m3/h

Fig. 1

NOTES:
Additional expansion vessel (if required), must be fitted to Central Heating
Return Inlet (fig. 2).
A bypass as far as possible from boiler is necessary if all radiators have
Thermostatic Radiator Valves (fig. 2).
Check automatic air vent (fig. 3).
Always chack if shaft of pump is not locked.
Set C.H. pressure to minimum of 1,0 bar (by preference to 1,5 bar).
Use the filling cock (fig. 3).

36 Automatic Air Vent

40
Filling Cock

14 C.H.
safety valve

Fig. 2 Fig. 3

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 FERROLI NOUVELLE ELITE 100

Installation Details

Minimum clearances

Attention - Flue must be removable for replacement of expansion vessel.

Access to the front of the boiler must be available for maintenance!

If the boiler is installed (for example) in hair dressers premises, ventilation must not be from areas which
aerosol hair spray is being used. Any spray or materials emitting volatile vapours can be a sourge of ignition
from the permanent pilot of the boiler. Propellants of aerosol sprays and fumes of volatile compounds in
addition to being highly flammable in many cases, will also change to corrosive hydrochloric acid when
expose to the products of combustion of the boiler. The results may be hazardous, cause service problems,
product failure and corrosion problems.

Effect of an extract fan

If there is any type of extract fan fitted in the premises, there is the possibility with open flued appliances, that
if inadequate fresh air vents are not provided, spillage of products from the flue diverter could take place, when
the fan is in operation. Where such installations are found, a test for spillage must be carried. A room sealed,
fan assisted gas combination boiler will give a more safe installation.

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 FERROLI NOUVELLE ELITE 100

Air supply
The following notes are intended to give guidance only.
Room or internal air space supply:
The Nouvelle Elite 100 requires a permanent air vent for combustion air either from the room direct
to outside air or to an adjacente room which must itself have a permanent air vent of the same size, direct
to outside air. The minimum size of this air vent must be: 94 cm2 free a (14 in2). A proprietry air vent may be
murked with its effective free area, if not, this information can usually be supplied by the maker. The vent
should be designed to diffuse the air in windy conditions and should be sited to reduce room draughts, i.e.
at top level. The aperture in the vent should not pass preferably, a 10 mm (3/8 in.) ball but allow the entry
of a 5 mm (3/16 in.) ball. (Additional gauzes or screens should not be used). Existing air vents should be
taken into account when accessing air vent requirements. An air vent in an internal wall should not
communicate with a bedroom, toilet, bathroom or kitchen and should not be more than 450 mm (18 in.) above
floor level in order to reduce the spread of smoke in the event of a fire. An air vent direct to outside air must
not be located less than 600 mm (2 ft.) away from any part of an open flued terminal nor less than 300 mm
(12 in.) directly above any part of a balanced flue terminal.

Cupboard or compartment air supply:

If the appliance is to be installed in a compartment or cupboard if existing, it should be of sufficient size. This
compartment or cupboard must have permanent air vents for combustion air, flue dilution and cooling
purposes, the vents being positioned at high and low level. The following minimum size of air vents (free area)
are required:
Position of Air vent Air from room or internal space Air direct from outside
High 252 cm2 (38 in2) 126 cm2 (19 in2)
Low 504 cm2 (76 in2) 252 cm2 (38 in2)

Note - Bot air vents must communicate whit the same room or must be on the same outside all to outside
air. Where cupboard/compartment air vents are open to a room, the room itself must have a permanent air
vent(s) as previously specified.

Flue system
The following notes are intended for general guidance. The cross sectional area of flue serving the boiler
must not be less than the area of the flue outlet of the appliance. The boiler has a flue spigot designed
for aluminium or stainless steel flue pipe. If double walled flue pipe is used, it should be of a suitable type.
Always use a split flue clip or flanged joint above the flue diverter to allow the removal of the boiler. A vertically
rising flue above the diverter for a minimum length of 600 mm (2 ft.) is required before any bend is fitted,
which should not be a 90 pattern. The flue pipe must be adequately supported and not be contact whit any
inflammable material. If any existing chimney is to be used, it should be lined with a stainless steel flexible
liner. The number of metal flue liner joints should be kept to the minimum for connecting the boiler to
an existing flue, the flue must be clean of any soot or loose material. Dampers must be removed. The flue
should be, as far as is practical, vertically rising with the avoidance of horizontal runs. The metal flue
pipe listed above should form the initial connection from the boiler to the existing chimney (and liner).

If the boiler is installed (for example) in hair dressers premises, ventilation must not be from areas which
aerosol hair spray is being used. Any spray or materials emitting volatile vapours can be a sourge of ignition
from the permanent pilot of the boiler. Propellants of aerosol sprays and fumes of volatile compounds in
addition to being highly flammable in many cases, will also change to corrosive hydrochloric acid when
expose to the products of combustion of the boiler. The results may be hazardous, cause service problems,
product failure and corrosion problems.

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 FERROLI NOUVELLE ELITE 100

Typical Installation of Pipe Work, Bypass and fitting additional expansion vessel C.H.

Gas

Cold water
Additional expansion vessel

Bypass

Fig. 1

Important - Fit bypass as far as possible from boiler if thermostat radiator valves are fitted.

Sizing of additional expansion vessels:

Deduct from the value given in the table the 7 litre vessel supplied.
NOTE: SAFETY VALVE
1. Fill C.H. installation to min. 1,5 bar SETTING (bar)
3.0
2. Select by preference the VESSEL CHARGE
expansion vessel for increased PRESSURE (bar)
0.5 1.0 1.5
system pressure of 2,0 bar INITIAL SYSTEM
3. Expansion vessel must be fitted PRESSURE (bar) 1.0 1.5 2.0 1.5 2.0 2.0
to Central Heating Return Inlet
TOTAL WATER
4. The standard 7 litres expansion CONTENT of SYSTEM EXPANSION VESSEL VOLUME (litres)
vessel is charged to 1 bar
LITRES
25 3.5 6.5 13.7 4.7 10.3 8.3
50 7.0 12.9 27.5 9.5 20.6 16.5
75 10.5 19.4 41.3 14.2 30.9 24.8
100 14.0 25.9 55.1 19.0 41.2 33.1
125 17.5 32.4 68.9 23.7 51.5 41.3
150 21.0 38.8 82.6 28.5 61.8 49.6
175 24.5 45.3 96.4 33.2 72.1 57.9
200 28.0 51.8 110.2 38.0 82.4 66.2
For syst. volumes other than
those given above, mult. the syst. 0.140 0.259 0.551 0.190 0.412 0.33
volume by the factor across

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 FERROLI NOUVELLE ELITE 100

Jig assembly (optional)

Important Note - Always use two spanners to prevent twisting of soft copper pipework.

Use of the jig assembly (fig. 1)

Put in position the jig assemblying on the wall. By using a spirit level, check the bottom frame B be in horizontal
position.

BOILER AFTER
INSTALLATION

2-6-7 = 3/4" 3-4-5 = 1/2"

1 = Electric cable entry

2 = Gas supply 3/4"
3 = Domestic hot water outlet 1/2"
4 = Domestic cold water inlet 1/2"
5 = Outlet Central Heating safety valve 1/2"
6 = Central Heating flow outlet 3/4"
7 = Central Heating return inlet 3/4"

Fig. 2 - Example of connection to the boiler

2 = Gas 3/4" 3 = Domestic Hot 5 = Outlet Central Heating 6 - 7 = Central Heating Flow
Note - Rubber seal on Gas! Water outlet 1/2" safety valve 1/2" and return 3/4"

4 = Domestic Cold Water

inlet 1/2"

Important Note - To connect the boiler to service cocks or to the pipeworks, always use two spanners to
prevent twisting of soft copper pipework.
Note 1 - Without expansion vessel, the pipework can pass up the back of the boiler. C.H. expansion vessel
can be fitted elsewhere in the system.
Note 2 - The central heating safety valve should be piped to discharge safety outside the property.

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 FERROLI NOUVELLE ELITE 100

Electricity supply and external controls

Electrical installation must be carried out by a competent electrician. The appliance is to be connected
to a 230/240V ~ 50 Hz supply. The supply fuse rating is 3A. The terminals are accessible after removing the
white base plate and single screw securing the terminal cover.

External controls:
room stat or remote
time clock in the place
of loop terminals 4 and
5. Please note 24 V only.

Procedure
The supply cable must be not be no less than 0.75 mm (24 x 0.2 mm) to BS6500 table 16.
The earth conductor must be cut longer than the live and neutral.
Connect the Supply Cable to the terminal block marked 230/240 V ~ 50 Hz, L, N, the supply cable is to be
connected as follows:
Connect the brown wire to the L (live) terminal.
The blue wire to the N (neutral) terminal.
The green/yellow wire to the (earth) terminal.

Secure the cable with the cable clamp.

The supply cable can be connected to the mains supply by the use of an unswitched shuttered socket-outlet
in conjunction withe the 3A fused 3 pin plug both in accordance with BS 1363. This provides complete
isolation.
Alternatively, a fused double pole switch having a contact separation of at least 3 mm, in all poles and
provided just for the boiler and its external controls can be used.
A wiring diagram is provided on the appliance, attached to the rear of the front panel. In addition, there is one
in this manual (page 25, 26).
Attention is drawn to the requirements of the current I.E.E. Regulation and in Scotland, the electrical
provisions of the Building regulations.

Room Thermostat (or remove time clock connection).

Please note that the room thermostat connection block is 24 V.
To connect mains voltage to these terminals will seriously damage the printed circuit board.
The room thermostat connector block is situated within the connector box. Twin core cable should be used
for this connection (terminals 4 and 5).
If using a remote 230/240 Volt time clock ensure that the motor and switch connections are totally separate
in the clock and that the switch connections are totally separate in the clock and that the switch connections
are independent for the 24 Volt terminals (4 and 5) on the boiler.

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 FERROLI NOUVELLE ELITE 100

Filling C.H. - Flushing C.H. - Descaling D.H.W.

Very important - When flushing the Domestic Hot Water part of the boiler with cleansing agent, the Flow
Switch Assembly 37 - 136 - 39 must be removed.
Guarantee on the flow switch assembly 37 - 38 - 39 is void, if flushed with any cleansing agent!

136
39
37
37 Cold water inlet filter
136Flowmeter
39 Cold water flow restricter

General:

1. C.H. system should be filled with the filling cock 40 very slowly with water and prevent that air is filled within.
2. Vent radiators of C.H. regular.
3. Heat Exchanger can be vented with heat exchanger venting point 53 (do not unscrew completely).
4. Leave loose the cap of automatic air vent 36. So air can pass!
5. Do not use the central heating safety valve 14 as a drain point.
6. It is advisable to flush and refil the C.H. system one day after the complete system has functioned at max.
temperature.

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 FERROLI NOUVELLE ELITE 100

General Explanation on Operation

1.0 Selector switch 61 in position Zero (first position).

In this position the main burner remain stops, only pilot burner is alight.

2.0 Selector Switch 61 in second position (Stand by).

2.1 Situation after at least 10 minutes
Central Heating pump is stopped.
A frost thermostat in the boiler can activate the boiler (if fitted).
2.2 Hot Water tap open (water flow of min. 0,5 Gallon/min. 2,5 Litres/min.).
At opening of a hot water tap, the burner will light
Boiler is controlled to keep the hot water at a on the P.C.B. factory set temperature of 50 C
Time Clock (if fitted) and Room thermostat (if fitted) will not activate the boiler.

3.0 Selector switch 61 in third position (Domestic Hot Water and Central Heating):
3.1 Hot water taps closed
3.1.1 Room stat demands for heat:
Central heating pump will rung continuously
Boiler thermostat 63 controls the boiler temperature in a modulating way
Time Clock 62 if fitted influence the boiler fonctionnement.
3.1.2 If contact in Room stat breaks (Room temperature too high):
Burner stops immediately
Central Heating pump stops after about 5 minutes (pump overrun)
3.2 Hot water tap open (water flow min. 0,5 Gallon/min. 2,5 Litres/min.).
Central heating pump stops immediately (priority to domestic hot water)
Burner is controlled to keep the hot water at a internally factory set temperature of 50C.

4.0 Selector switch in position Test.

In this position the burner will light even without demand for heat from the roomstat (if pilot burner
is alight).

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 FERROLI NOUVELLE ELITE 100

Commissioning and General Check Out

1.0 General Check before lighting.
3.0 General check.
1.1 Isolating valves open.
1.2 Central Heating system filled to min. 1,0 bar. 3.1 Close hot water tap.
1.3 Central Heating pump free. Main burner will extinguish.
1.4 Heat exchanger vented. 3.2 Selector switch boiler in position:
1.5 Water flow D.H.W. min. 2,5 Litres/min. (0,5 Gallon/min.) Hot water and central heating.
1.6 C.H. radiators vented. Room stat at maximum (if fitted).
1.7 Bypass C.H. open. Boiler stat at higher position.
1.8 Gas supply purged. 3.3 Circulating pump will run.
1.9 Cap automatic air vent unscrewed. Main burner LIGHTS.
3.4 Boiler stat at min. position. Main burner
2.0 Lighting
extinguishes. C.H. pump keeps
Lighting gas valve Honeywell running.
Before lighting, check again if central heating system is 3.5 Hot water tap open.
pressurised to min. 1 bar. Water flow minimum 2,5 Liter/min.
C.H. pump stops. Main burner lights.
Ensure electric mains, gas and water are turned on. 3.6 Hot water tap closed. Main burner
Put selector switch in position Test. extinguishes. C.H. pump starts
Depress gas valve knob 60 fully, electric igniter will light pilot flame.
running again.
After lighting pilot flame: keep knob of gas valve fully depressed
3.7 Room stat at minimum C.H. pump
for 20 sec.
stops after about 5 minutes.
Release gas valve knob.
Main burner will light if hot water tap will be opened.
Set selector switch in required position. 4.0 Adjustment C.H.
4.1 Adjust Central Heating Output of boiler
Lighting gas valve SIT according C.H. Installation
TO LIGHT PILOT requirement see page: C.H. output
1) Push in and turn control knob anticlockwise until symbol * adjustment.
is in the position shown in Fig. 1
5.0 Explain and demonstrate the lighting
2) Fully depress control knob and hold in this position, the pilot
and shutting down procedure to the
will automatically light. (Fig. 2).
user.
3) Keep the control knob fully depressed for 20 seconds after
the pilot has lit and then slowly release. Fig. 1 6.0 It is advisable to flush and refill the
NOTE: IF THE PILOT DOES NOT LIGHT OR GOES OUT UPON Central Heating system 1 day after
RELEASING THE ONTROL KNOB REPEAT THE ABOVE PRO- the complete system has functioned
CEDURE at max. temperature.
MAIN BURNER IGNITION Fig. 2
4) Turn control knob anti-clockwise until the symbol is in the
position shown in Fig. 3, main burner will light if controls are
calling for heat.
TO TURN OFF MAIN BURNER AND PILOT
5) Slightly push in control knob and turn clockwise until symbol Fig. 3

is in the position shown in Fig. 4.

ATTENTION:
AFTER TURNING OFF THE MAIN BURNER AND PILOT THESE
CANNOT BE RELIT FOR APPROXIMATELY 60 SECONDS. Fig. 4

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 FERROLI NOUVELLE ELITE 100
Pilot gas supply pipe

47. Modulating regulator (Modureg) gas valve

Gas outlet union to burner

Key
1. Cap
2. Shaft
3. Adjustment screw for maximum pressure setting 60 Extension knob
4. Adjustment screw for maximum pressure setting
5. 6,3 mm AMP terminals Gas inlet union

If necessary replace complete MODUREG

Pressure Minimum Maximum

settings mbar inch WG mbar inch WG 23. Thermocouple
Natural Gas 2.5 1.0 13.0 5.2
45. Gas valve
46. Operator gas valve
L.P.G. 8.0 3.2 36.0 14.2
47. Modulating regulator
(Modureg) gas valve
49. Eco Connector to overheat
ADJUSTMENTS AND CHECKOUT GAS VALVE HONEYWELL cut-off thermostat
66. Microswitch combination
Important gas valve for ignition
1. Adjustments should be made by qualified personal only.
2. Allow time for pressure to stabilize before making adjustments.
3. It is recommended that the Modureg is operated a few times to ensure correct setting.
4. Cap has to be removed before adjustment can be made.
5. The minimum pressure setting must first be adjusted to ensure that burner will safety light up, then the
maximum pressure setting can be adjusted.
6. Any adjustment of minimum pressure setting influences maximum pressure setting.
ADJUSTING MINIMUM and MAXIMUM PRESSURE SETTINGS
Important: for the Gas Valve Honeywell first the minimum pressure should be set and then the max. pressure
1. Connect a suitable pressure gauge to burner pressure (test point).
2. Disconnect one electrical connectin of Modureg.
3. Wait until minimum pressure is stable.
4. If minimum rate pressure needs adjustment then use a 9 mm wrench to turn the brass nut clock wise to
increase or counter-clockwise to decrease pressure, until the desired minimum outlet pressure is
obtained.
5. Check several times if main burner lights easily and reliable at minimum pressure (with cap replaced).
6. Push top of the shaft gently downwards to the red nut and check pressure.
7. If maximum rate pressure needs adjustments then use a 7 mm wrench to turn the red nut clockwise to
increase and counter- clockwise to decrease pressure.
8. Check minimum and maximum setting several times by releasing and pushing the top of shaft gently.
9. Replace cap.
10. If minimum and maximum pressures are set, wire Modureg into the circuit.

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 FERROLI NOUVELLE ELITE 100

ADJUSTING MINIMUM AND MAXIMUM PRESSURE GAS VALVE SIT

Modureg

Important: for the gas valve SIT first the maximum pressure should be set and the minimum pressure.

1- Connect a suitable pressure gauge to the burner pressure test point.

2- Remove protection cap C
3- The max pressure should be set with the max. current through the modulating soil (for example full
open hot water tap).
4- Use a 10 mm wrench to set the max pressure with nut B
5- The minimum pressure should be adjusted without electrical connection on the modulating coil (dis-
connect one faston).
Nut B should remain locked with a wrench and with screw A the minimum pressure can be adjusted.
6- Check several times the maximum and minimum pressure (connecting-disconnecting the modulating
coil)
7- Replace cap C
8- Wire the modulating coil into the circuit

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 FERROLI NOUVELLE ELITE 100

C.H. output adjustment 12 11 10 9 8 7 6 5 4 3 4 3 2 1

6 5 4 2 1 230V
50Hz
X4
X1 X2

C.H. output is factory set at min. output (8.8 kW) 13 12 10 9 7 6 5

2 1 3 1

X7 X6
X3
2AT

F1

P1 P2 RY1

RY2

X8
TR1

Fig. 2 - Front view P.C.B. in control box

C.H. max. output D.H.W. temperature

Fig. 1 - Gas valve

44 - Combination gas valve

MIN

MAX

MIN

MAX
45 - Knob gas valve
46 - Operator gas valve
P1 P2
47 - Modulating regulator (Modureg)
48 - Burner pressure test point Fig. 3 - Potentiometres settings
66 - Microswitch

Operations
1. Check if all hot water taps are closed.
2. Disconnect ONE electrical connection from operator 46 of gas valve 44.

Note - Don't pull the wire, use pliers and pull the faston insulation to the front.

3. Start boiler on C.H., cool down C.H. system.

4. Connect a suitable pressure gauge to bur ner pressure test point 48.
5. Check required burner pressure in fig. 4.
6. Rewire operator 46 of gas valve, burner will light.
7. Set outlet pressure of gas valve 44 with potentiometer K2 on P.C.B. in control box.

Note - For min. pressure see also Technical data page.

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 FERROLI NOUVELLE ELITE 100

Burner Pressures C.H.

35

30

Fig. 4 - Burner pressure VS C.H. 25

load with L.P.G. and G31

mbar 20

15

10

kW 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
kcal/h 9 10 11 12 13 14 15 16 17 18 19 20
X 1000

15
Fig. 5 - Burner pressure VS C.H. load with 14
natural gas (G20)
13

12

11

10

8
mbar

2
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
kW
kcal/h 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
x 1000

NOTE - For gases not mentioned please ask for details to FERROLI
technical Dpt.

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 FERROLI NOUVELLE ELITE 100

Wiring diagram
49
24 V 220V ~ 50 Hz.

126

25

2 1
23 F N 67
42 34 47 46
114 50

136 66
- OUT +

61
2 1 1
a 80
L
X1 X2 X4
2 b 220V
12 11 10 9 8 7 6 5 4 3 4 3 2 1 6 5 4 N

13 121110 9 8 7 6 5 4 3 2 1
X3 3 2 1
X6 32

63 157
3 c 4
24V
5
80
d 72
4

X8 MF7
73

remove if time clock is fitted o o o o to connect if time clock or frost thermostat are fitted

Key
23. Thermocouple 63. C.H. boiler thermostat
24. Spark electrode 66. Microswitch combination gas valve
32. Central heating pump 67. Ignition transformer
34. C.H. flow temperature sensor 72. Room thermostat (not fitted)
42. D.H.W. temperature sensor 73. Frost thermostat predisposition
46. Operator gas valve 80. Five pole terminal block (230/240 V - 24 V)
47. Modulating regulator (Modureg) gas valve 114. Water flow switch
49. Overheat cut-off thermostat 100 C 126. Flue gas safety thermostat
50. Heat exchanger limit thermostat 85 C 136. Flowmeter
61. C.H./D.H.W. selector switch 157. D.H.W. boiler thermostat

Selector switch on TEST position:

- Boiler starts for C.H.
- Waiting time is excluded
- Max burner pression C.H. can be checked/set with P1

Warning - Any external voltage (230 V or low voltage) applied to the block 1-2 of the terminal block 80 or internal wiring
of the boiler, will damage the P.C.B. in the control box.

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 FERROLI NOUVELLE ELITE 100

Mounting Details
Thermostat - Pilot - Gas Valve

Fig. 2
Fig. 1
Pilot assembly (for replacement: unscrew central
50. Heat exchanger limit thermostat screw and pull pilot assembly to bottom)
22. Burner
23. Thermocouple
24. Spark electrode (for replacement: pull to bottom)
73. Frost thermostat (if fitted) 25. Pilot

Fixing screws

Boiler lower view

Cable

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 FERROLI NOUVELLE ELITE 100

General fault finding

To the User/Installer

Check before calling service engineer:

1. Gas available (check kitchen and gascocks).

2. Electrical mains (test with other electrical equipment).
3. Water pressure Central Heating System (min. 1 bar on pressure gauge).
4. Water flow domestic hot water (min. 0,5 Gall./min. - 2,5 L/min.) (fills a 1 pint milk bottle in max. 15 sec.).
5. Flue outlet free from obstacles.
6. Are all service cocks open?
7. Is at least one radiator valve or bypass in Central Heating system open?

Important - See also page Filling C.H. - Flushing C.H. - Descaling D.H.W.

To the Service Engineer:

Never pull on the wires in the Fastons. To disconnect the Fastons pull on the insolation of the Fastons with
pliers, keep the terminal pushed back with a screwdriver.

For fault finding see also pages 36 - 37

Cleaning and Maintenance

The following operations must be performed only by qualified technicians.

Seasonal boiler and flue system check

It is advised to submit the system and least once a year to the following controls.
The system water pressure when hat in operation has to be between 1 and 1.5 bar if not it has to be brought
inside the required level. The boiler safety and requlating controls have to work properly.
The burner and the copper heat exchanger have to be cleaned by mean of soft brushes, do not use
cheminal products. The expansion tank has to be under pressure.
The gas and water circuits have to be tightened. The chimney and the boiler flue have to be free of any
obstruction and without any leaking. The thermocouple has not to present deposits on it and has to be
envelopped correctly by the pilot flame. The gas flow pressure has to be in accordance to the technical data.
The circulating pump has to run freely.

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 FERROLI NOUVELLE ELITE 100

NOTE - In the draft diverter is installed a flue gas safety thermostat.

This thermostat switches off the thermostat pilot if the temperature of the thermostat
becomes to high (flue gas leakage).

Faults finding causes and remedies

Electronic ignition does not spark Faulty electronic ignition transformer

Replace the transformer
Electrode broken or not in right position
Replace the electrode or places it in right position
False contact between electrode and wire
Screw better the terminal on the wire
Faulty microswitch on the gas valve
Replace the microswitch

Pilot does not turn on No gas flow

Open the gas tap
Air in supply pipeline
Vent the pipeline as explained under the
para boiler lighting
Pilot nozzle obstructed
Clean the nozzle by mean of compressed air
Poor gas flow rate
Set the right flow by mean of the screw
on gas valve

Pilot burner shuts off Faulty thermocouple

Replace thermocouple
Flame does not envelop thermocouple
Regulate the flame by the screw on gas valve
Poor electrical connection with solenoid
on gas valve
Thight the nut on the gas valve
Main burner does not ignite No electricity supply on gas valve
Wait for electricity supply
Main nozzles occluded
Clean the nozzles
Faulty gas valve
Repair or replace gas valve

Bursting at the main Pilot flame too distant from main burner
Place the pilot flame closer to the main burner
Dirty heat exchanger
Clean the heat exchanger
Gas flow to low
Set correct gas pressure at the main burner
Dirty burners
Clean burners

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 FERROLI NOUVELLE ELITE 100

Smell of combustion gases Dirty heat exchanger

Clean th heat exchanger
Inadequate draft at the chimney
Ceck the chimney draft
Not enough fresh air
Increase fresh air supply
Wrong burner flame
Ceck gas flow at the gas meter and set right
pressure at main burners

Boiler function but temperature does not increase Wrong burne flame
Ceck gas consumption
Dirty heat exchanger boiler output to low
Ceck heat requirement
Thermostat probe not properly located in its pocket
Place the probe properly in the pocket
Wrong setting of the requlating thermostat
See chapter controls adjustment

Condensate product in the boiler To low temperature in the system

Set thermostat at higher temperature
Wrong flame setting
Ceck flame setting
Low gas consumption
Ceck gas consumption

Boiler becomes dirty easily Wrong flame setting

Ceck flame setting and gas consumption
according to the boiler output

Cold radiator in winter Switch on summer position

Turn on winter position
Room thermostat set at too low temperature or faulty
Set the room thermostat at higher or replace it
The pump does not run as it is jammed
Remove the pump impeller plug and by a screw driver
turn the impeller till can rotate freely
The pump does not run but impeller is not jammed
Replace pump capacitor or pump

Domestic hot water temperature not constant Hot water flow to low
Increase flow to a minimum of 2.5 l/min

Low delivery of hot water Low pressure from the mains

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 FERROLI NOUVELLE ELITE 100

Spare Parts List

Item No. Makers Part No. No. Off DESCRIPTION

14 3980013/0 1 C.H. safety valve
21 3400951/0 4 Main injector (Natural Gas)
21 3400950/0 4 Main injector (L.P.G.)
23 3980149/0 1 Thermocouple
24 3980164/0 1 Spark electrode
25 3980151/0 1 Pilot
32 3980060/0 1 Central heating pump
36 3980116/0 1 Automatic air vent
39 3980122/0 1 Cold water flow limiter 10 l/min.
42 3980031/0 1 Temperature sensor
44 3980228/0 1 Combination gas valve
49 3980017/0 1 Overheat cut-off thermostat 100C
50 3980016/0 1 Heat exchanger limit thermostat 85C
51 3980018/0 1 Heat exchanger from thermostat
61 3980155/0 1 C.H. selector switch
62 3980215/0 1 Time clock
63 3980229/0 1 C.H. boiler thermostat
64 3980030/0 1 C.H. temperature/pressure gauge
66 3980127/0 1 Microswitch combination gas valve
67 3980115/0 1 Ignition transformer
112 3370081/0 1 Pilot injector (Natural Gas)
112 3370084/0 1 Pilot injector (L.P.G.)
101 3980004/0 1 P.C.B.
126 3980168/0 1 Kit flue gas safety thermostat
136 1 Flowmeter

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 FERROLI NOUVELLE ELITE 100

To Light the Boiler:

1. Before lighting, check again if central heating
system 64 is pressurised to min. 1 bar.
2. Ensure electric mains, gas and water are turned.
3. Put selector switch 61 in position Hot Water Only.
4. Depress gas valve knob 60 fully, electric igniter will
light pilot flame.
5. After lighting pilot flame: keep knob of gas valve fully
depressed for 20 sec.
6. Release gas valve knob.
7. Main burner will light if hot water tap will be
opened.

Cod. 3541737/3 - 04/97

Phone numbers:

Installer _________________________

Service Engineer __________________

37047 SAN BONIFACIO - VR - Italy

tel. 045/6139411 - tlx. 480172
fax 045/6100233

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