Ferroli F30E User guide

Appr. nr. B99.06 A - CE 0461 BM 0607
FERROLI F30
gas combination boiler for central heating
and hot water production, wall mounted,
copper heat exchanger, fan assisted, room sealed,
electronic flame Ignition and control
INSTALLATION, SERVICING AND USER INSTRUCTIONS
cod. 3544016/2 - 05/2005
G.C. NO: 47-267-32

Ferroli F 30
2
CE MARK
CE mark documents that the Ferroli gas appliances comply with the requirement contained in
European directives applicable to them.
In particular, the appliances comply with the following CEE directives and the technical specifications
provided from them:
• Gas appliances directive 90/396
• Efficiencies directive 92/42
• Low tension directive 73/23 (modified from the 93/68)
• Electromagnetic compatibility directive 89/396 (modified from the 93/68)
IMPORTANT
Your "benchmark" Installation, Commissioning and Service Record Log Book is enclosed in the last
pages of this manual. “This record must be completed and left with the end user”.
"All CORGI Registered Installers carry a CORGI ID card and have a registration number. Both should
be recorded in your central heating log book. You can check the installer's CORGI registration by
calling CORGI on 01256 372300".
Ferroli is a member of the Benchmark initiative and fully supports the aims of the programme. Benchmark
has been introduced to improve the standards of installation and commissioning of central heating
systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety
and efficiency. Please see installation and servicing guidelines.
INDEX
1. DESCRIPTION........................................................................................................................................ 3
2. TECHNICAL AND DIMENSIONAL CHARACTERISTICS....................................................................... 4
3. INSTALLATION DETAILS ...................................................................................................................... 9
4. COMMISSIONING AND TESTING...................................................................................................... 24
5. ADJUSTMENT AND GAS CONVERSION ........................................................................................... 25
6. MAINTENANCE AND CLEANING ..................................................................................................... 27
7. REPLACEMENT OF PARTS ................................................................................................................. 29
8. FAULT FINDING.................................................................................................................................. 34
9. ELECTRICAL AND FUNCTIONAL SCHEME ....................................................................................... 41
10. USER INSTRUCTIONS ....................................................................................................................... 43
BENCHMARK........................................................................................................................................... 46

Ferroli F 30
3
1. DESCRIPTION
1.01 Introduction
The Ferroli F30 is defined as a “room sealed” combination boiler, all air required for combustion is taken from
outside the room in which it is installed. It is a new high performance gas fired heat generator for central heating and
domestic hot water production. A special feature of this boiler is its built-in electronic flame ignition and control unit
making burner operation completely automatic and safe. The main components are as follows:
• Copper heat exchanger consisting of three finned tubes specifically shaped for high efficiency.
• There are three copper coils inserted in the three heating circuit tubes. These represent the domestic hot water heat
exchanger. Their shape and high exchange surface area enable the full output of the boiler to be absorbed.
• Ceramic fibre insulated combustion chamber
• 16 stainless steel bladed burners specifically designed for this boiler.
• Fan for discharge of combustion products and intake of combustion air.
• Differential air pressure switch. For safety reasons, this ensures the burner ignites only when the fan
is functioning correctly.
• Hermetically sealed compartment made from corrosion-resistant steel enclosing the above components.
• Combination gas safety valve with modulator, complete with pressure stabiliser.
• Flowmeter giving the domestic hot water circuit precedence over the central heating circuit.
• Pressure relief valve for the central heating circuit set to open at 3 bar.
• Built-in Expansion vessel.
• Variable speed pump.
• Central heating flow temperature adjustment thermostat.
• Domestic hot water flow temperature adjustment thermostat.
• Central heating limit thermostat.
• Overheat safety thermostat.
• Electronic control unit for automatic flame ignition and control.
• Central heating low water pressure cut off switch.
• Domestic hot water flow temperature sensor.
• Central heating flow temperature sensor.
• Safety bracket
1.02 Instructions and regulations
Assembly, installation, first start up and maintenance must be carried out by competent persons only, in accordance
with all current technical regulations and directives.
C.O.S.H.H.
Materials used in the manufacture of this appliance are non hazardous and no special precautions are
required when servicing.
Related Documents
This appliance must be installed strictly in accordance with these instructions.
The Gas Safety Regulations (Installations & Use) 1996.
The Local Building Regulations.
The Building Regulations.
The Buildings Standards (Scotland - Consolidated) Regulations.
British Standards Codes of Practice:
B.S. 7593 1992 TREATMENT OF WATER IN DOMESTIC HOT WATER CENTRAL HEATING SYSTEMS
B.S. 5546 1990 INSTALLATION OF HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
B.S. 5440 Part 1 2000 FLUES
B.S. 5440 Part 2 1989 AIR SUPPLY
B.S. 5449 1990 FORCED CIRCULATION HOT WATER SYSTEMS
B.S. 6798 1987 INSTALLATION OF GAS FIRED HOT WATER BOILERS
B.S. 6891 1989 GAS INSTALLATIONS
B.S. 7671 1992 IEE WIRING REGULATIONS
B.S. 4814 1990 SPECIFICATION FOR EXPANSION VESSELS
B.S. 5482 1994 INSTALLATION OF LPG
Model Water Bye Laws
For Northern Ireland the rules in force apply

Ferroli F 30
4
Fig. 1
2. TECHNICAL AND DIMENSIONAL CHARACTERISTICS
2.01 Technical information
Ferroli F30 boilers are central heating and domestic hot water heat generators and are produced as standard to
function with natural gas or liquid petrolium gas converted.
Key
1 - 3/4" central heating flow outlet
2 - 1/2" domestic hot water flow outlet
3 - 3/4“ gas inlet
4 - 1/2" domestic hot water inlet
5 - 3/4" central heating return inlet
363
75
15 430
760
15
692
460
36 155
95 54 60
2
53
1
60
189
175
13 5
2
Top view
4
4
202
150
Ø80 Ø80 Ø80
120 12070
Bottom view

Ferroli F 30
5
N.B. - The gas pressures at the burner and gas flows during the central heating phase given in the table refer
to nominal boiler output. To reduce this output (where necessary), gas pressure must be reduced until the
required output level is reached (see figures 4 and 5).
During domestic hot water production, gas pressures to the burner must correspond to the maximum
output given in table for the type of gas.
Gas pressure must be adjusted during maximum draw-off of domestic hot water.
• Maximum working temperature for central heating flow: 85°C
• Maximum temperature of domestic hot water: 55°C, adjustable between 40°C and 55°C.
• Minimum domestic cold water pressure required for 95% heat input:
- Flow restrictor fitted (standard) - 1,2 bar;
- Flow restrictor removed - 0,5 bar
Technical Data
MODEL Heat output Heat input
Net
Ferroli F30
Domestic hot
water circuit
contents
Litres
0,8
Boiler water
contents
Litres
1,5
kW
14,5
kW
33,1
kW
12,7
kW
30,0
Domestic hot
water output
kW
30,0
MODEL
Connections Expansion vessel
Max. working
pressure
central
heating
circuit
Max.
working
pressure hot
water circuit
12345Capacity Pre-pressurising
value
ØØØØØLitres bar bar bar
Ferroli F30 3/4” 1/2” 3/4” 1/2” 3/4” 10 1 3 6
MODEL
Main injectors (mm) Gas flow rates to main burners
for central heating Gas valve
Ø1/2”
G20 - NG G31 - LPG G20 - NG G31 - LPG
ØØ m
3
/h kg/h
Ferroli F30 16x1,25 16x0,75 3,5 2,6 H. V K4105G
MODEL
Gas supply pressures
working Gas pressure at main burner for central heating
Safety valve
G20 - NG G31 - LPG G20 - NG G31 - LPG
min. max. min. max.
mbar mbar mbar mbar mbar mbar bar
Ferroli F30 20 37 2,5 13,0 7,0 35,5 3
MODEL
Domestic hot
water production
with ∆t 30°C
Domestic hot
water production
with ∆t 35°C
Max. working
pressure domestic
hot water Protection
level
Weight
G20 - NG G31 - LPG
l/min. l/min. mbar mbar kg
Ferroli F30 14,3 12,3 13,0 35,5 IP44 48

Ferroli F 30
6
2.03 Boiler water flow diagram2.02 Boiler main components
Key
5 Room sealed compartment
7 Gas inlet
8 Domestic hot water outlet
9 Domestic hot water inlet
10 Central heating flow outlet
11 Central heating return inlet
14 Safety valve
16 Fan
19 Combustion chamber
20 Burner assembly
21 Main injector
22 Burner
26 Combustion chamber insulation
27 Copper heat exchanger for central
heating and domestic hot water
28 Flue collector from heat exchanger
29 Internal flue exit
32 Central heating pump
34 Central heating flow temperature sensor
36 Automatic air vent valve
Fig. 2
Fig. 3
818222
29 43187
RESET
OFF
ON
0
5
1
234
6
bar
98 63 157 145
°C°C
62
IN OUT
MIN
GRUNDFOS
FERROLI
114
34
20
21
90
50
16
28
32
26
19
49
132
5
56
27
91
10 8 784 85 44 136 14 42 9 11
36
OUT
IN
MIN
AIR
IN
AIR
IN
FLUE
OUT
C.H.
OUT D.H.W. OUT GAS IN D.H.W. IN C.H. IN
42 Domestic hot water flow
temperature sensor
43 Air pressure switch
44 Gas valve
49 Safety overheat thermostat
50 Central heating flow limit thermostat
56 Expansion vessel
62 Time clock
63 Central heating temperature adjustment
81 Ignition electrode
82 Sensor electrode
84 Primary gas valve solenoid
85 Secondary gas valve solenoid
90* Flue outlet test point
91* Air test point
98 On/Off/Reset switch
114 Low water pressure cut off switch
132 Flue gas deflector
136 Flow meter
145 Central heating pressure gauge
157 Domestic hot water temperature adjustment
187 Restrictor
*For use with flue gas analyser

Ferroli F 30
7
2.05 Pump characteristics
The pump head available for circulating the water
is given in fig. 6.
N.B. - The pump is factory set at position 3. The pump
is a Grundfos type 15-50 UPS series.
Grundfos Pump performance graph
Note - Minimum flow through boiler heat exchanger at
any time should not fall below 6 litres per minute.
If the total volume of water in the system exceeds 40
litres an additional expansion vessel must be fitted to
the central heating return pipe.
Pump performance curve Grundfos UPS 15-50
Fig. 6
1 2 3 Speed settings
ABoilers pressure drop
BAvailable pump head C.H.
2.04 Central heating adjustment (not normally required)
To adjust boiler heat input (thus also regulating heat output to the central heating water) simply adjust the main
burner via the electronic control board (fig. 4, 5 and see paragraph 5.04 page 24).
The diagrams indicate the variation in heat output to the water as burner working pressure is varied.
Adjusting boiler output to the actual requirements of the central heating system will minimise boiler cycling thus saving
fuel, varying the output has virtually no effect on the efficiency and combustion characteristics of the boiler.
Diagram of pressures
and outputs with Natural gas
Fig. 4 Fig. 5
Diagram of pressures and outputs
with LPG (Propane)
2
3
4
5
6
7
8
9
10
11
12
13
12 13 14 15 16 17 18 19 20 21 22 23 24
11 12 13 14 15 16 17 18 19 20 21
kW
kcal/h
x 1000
mbar
14
25 26 27 28 29 30 31
22 23 24 25 26
kW
kcal/h
X 1000
m
b
ar
18 19 20 21 22 23
5
10
15
20
25
30
35
12 13 14 15 16 17
11 12 13 14 18 19 2015 16 17
25 26 27 28 29 3024
21 25 2622 23 24

Ferroli F 30
8
SIZING OF ADDITIONAL EXPANSION VESSELS:
Deduct from the value given in the table the 10
litre vessel supplied.
Note:
1. Fill C.H. installation to min. 1.5 bar.
2. Expansion vessel must be fitted to central
heating return pipe.
3. The standard 10 litre expansion vessel is
charged to 1 bar.
4. The additional expansion vessel should be
charged to 1 bar.
SAFETY VALVE
SETTING (bar)
VESSEL CHARGE
PRESSURE (bar)
INITIAL SYSTEM
PRESSURE (bar)
TOTAL WATER
CONTENT of SYSTEM
3.0
0.5 1.0 1.5
1.0 1.5 2.0 1.5 2.0 2.0
EXPANSION VESSEL VOLUME (litres)
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
0.140 0.259 0.551 0.190 0.412 0.33
For syst. volumes other than
those given above, mult. the syst.
volume by the factor across
Fig. 7
Pressure loss diagram
m |h
3
Q
8
7
6
5
4
3
2
1
00.5 1.5 2.512
Hmbar x 100

Ferroli F 30
9
3. INSTALLATION DETAILS
Gas Safety (Installation & Use) Regulations: 1996
In the interest of safety, it is the law that all gas appliances are installed by a competent person in accordance
with the above Regulations, Building Regulations/Building Standards Scotland, Codes of Practice, current I.E.E.
Regulations and the byelaws of the Local Water Undertaking. Failure to comply with the Regulations may lead to
prosecution; it is your responsibility to ensure that the law is complied with.
N.B. For Northern Ireland the rules in force apply.
Important - If the boiler is to be fitted in a timber framed building it should be fitted in accordance with the Institute of
Gas Engineers document IGE/UP/7. If in doubt advice should be sought from the Local Supplier.
Location of Boiler
The installation of the Ferroli F30 must be on a suitable non-combustible load bearing wall which will provide
an adequate fixing for the boiler mounting safety bracket assembly. The location should be in an area where
the water pipes will not be subjected to frost conditions. In siting the combination boiler the following
limitations must be observed:
The combination boiler may be installed in any room or internal space, although particular attention is drawn
to the requirements of the current I.E.E. wiring regulations and in Scotland the electrical provisions of the
building regulations applicable in Scotland, with respect to the installation of the combination boiler in a room
or internal space containing a bath or shower.
Where a room sealed appliance is installed in a room containing a bath or shower any electrical switch
or appliance control utilising mains electricity must be situated so that it cannot be touched by a person
using the bath or shower.
Air Supply
The room or compartment in which the boiler is installed does not require a purpose provided vent when
using the standard concentric flue.
Flue System
The boiler allows the flue outlet to be taken from the rear of the boiler, from either side or vertically.
A standard flue length of 0.75 metres is provided. Alternative lengths of two or three metres can be supplied
(equivalent to wall thicknesses of up to 565, 1815 and 2815mm for rear flues, deduct 91mm plus distance from side
wall for side outlet flues). It is absolutely essential, to ensure that products of combustion discharging from the
terminal cannot re-enter the building, or enter any adjacent building, through ventilators, windows, doors,
natural air infiltration or forced ventilation/air conditioning.
Gas Supply
If necessary the local Gas supplier should be consulted, at the installation planning stage, in order to establish
the availability of an adequate supply of gas.
An existing service pipe must not be used without prior consultation with the Local Gas supplier.
A gas meter can only be connected by the Local Gas supplier, or by a Local Gas suppliers Contractor.
Installation pipes should be fitted in accordance with BS6891-1988.
Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for LPG.
Pipework from the meter to the combination boiler must be of an adequate size.
The boiler requires 3.5 m3/h of natural gas, and 2.60 kg/h of LPG.
Do not use pipes of a smaller size than the combination boiler inlet gas connection.
The complete installation must be tested for gas soundness and purged as described in BS6981-1988. All pipework
must be adequately supported. An isolating gas valve is provided and should be fitted on the boiler gas inlet.
Please wait 10 minutes when lighting from cold before checking gas rate. Gas pressures should be checked after
the boiler has operated for 10 minutes to reach thermal equilibrium.
Water System
Note - the boiler is designed for sealed systems only and must NOT be used on open vented systems.

Ferroli F 30
10
Central Heating
Detailed recommendations are given in BS6798, BS5449, BS6700 and CP342 Part 2. Pipework not forming part
of the useful heating suface should be insulated to prevent any heat losses or possible freezing (i.e. in roof spaces
or ventilated underfloor spaces). Drain taps should be positioned at the lowest point of the system in accessible
locations to permit the whole system to be drained down. The drain taps should be in accordance with BS2879. Copper
tubing to BS2871, Part 1 is recommended for water carrying pipework. Pipework in horizontal runs should have a
gradient where possible to facilitate the removal of air. Ensure that the boiler heat exchanger is not a natural point for
air collection. A typical heating system with domestic hot water circuit is illustrated in fig. 8.
Important - If thermostatic radiator vales are fitted a bypass must be fitted to ensure a minimum flow rate through
the boiler of 6 l/min. The bypass should be fitted as far as possible from the boiler.
Make Up Water
Provision must be made for replacing water lost from the sealed system. Reference should be made to BS6798,
for methods of filling and making up sealed systems. There must be no direct connection between the boiler's
central heating system and the mains water supply. The use of mains water to charge and pressurise the system
directly, is conditional upon the Local Water Byelaws. Again any such connection must be disconnected after use.
A typical temporary filling loop is shown in fig. 9.
Domestic Hot Water
Always fit a scale reducer in "hard water areas" (18 clarke degrees or over)". A 15mm copper connection point on the
boiler for attaching to the main supply is provided. The maximum domestic water pressure for the inlet supply is 10 bar
(145 P.S.I.). If the cold mains supply exceeds 5 bar (72 P.S.I.), a water governor or pressure reducing valve must be
fitted by the installer into the mains supply in an inconspicuous but accessible position preferable between 3 and 5 metres
(10-16ft) before the appliance. Such a valve must be approved by the Water Research Council.
Attention - is drawn to the Model Water Byelaws.
Fittings manufactured from duplex (alpha-beta) brass are not acceptable for underground use and certain
water undertakings will not accept their use above
ground.
Ensure all pipework is adequately supported
NOTE: A bypass must be fitted as far as possible
from the boiler if thermostatic radiator valves are
fitted thoughout.
Fig. 8
Gas
Cold water
Additional expansion
vessel C.H. (if required)
Filling
point C.H.
Bypass
Key
1. Filling point C.H.
2. Temporary connection
3. Cold water supply Fig. 9

Ferroli F 30
11
Terminal Position
Fig. 11
CLEARANCES:
*600mm minimum clearance for servi-
cing access
460 5 min.5 min.
100 min.837
600* min.
760
200 min.
363 50 mm
Fig. 10
P
D, E
Q
Q
l
BC
A
G
F
L
J
HH
K
N
N
MM
Q
Directly below an opening, air brick, (0-7 kW)
opening windows, etc. (>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Above an opening, air brick, (0-7 kW)
opening windows, etc. (>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Horizontally to an opening, air brick, (0-7 kW)
opening windows, etc. (>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Below gutters, soil pipes or drain pipes
Below eaves
Below balconies or car port roof
From a vertical drain pipe or soil pipe
From an internal or external corner
Above ground roof or balcony level
From a surface facing the terminal
(also see 6.1.2)
From a terminal facing the terminal
From an opening in the car port ( e.g. door,
window) into the dwelling
Vertically from a terminal on the same wall
Horizontally from a terminal on the same wall
From the wall on which the terminal is mounted
From a vertical structure on the roof
Above intersection with roof
Dimensions Terminal position
(kW input expressed in net)
Balanced flues room
sealed Open flues
Natural
draught Natural draught
Fanned
draught Fanned draught
Aa300 mm
600 mm
1500 mm
2000 mm
300 mm Not allowed 300 mm
Ba300 mm
300 mm
300 mm
600 mm
300 mm Not allowed 300 mm
Ca300 mm
400 mm
600 mm
600 mm
300 mm Not allowed 300 mm
D300 mm 75 mm Not allowed 75 mm
E300 mm 200 mm Not allowed 200 mm
F600 mm 200 mm Not allowed 200 mm
G300 mm 150 mmbNot allowed 150 mm
H600 mm 300 mm Not allowed 200 mm
I300 mm 300 mm Not allowed 300 mm
J600 mm 600 mm N/A 600 mm
K600 mm 1200 mm N/A 1200 mm
L1200 mm 1200 mm N/A 1200 mm
M1500 mm 1500 mm N/A 1500 mm
N300 mm 300 mm N/A 300 mm
ON/A N/A N/A 50 mm
PN/A N/A See Table 2
and Fig. 6b N/A
QN/A N/A See Table 2
and Fig. 4 150 mm
NOTE N/A = Not applicable
aIn addition, the terminal should not be nearer than 150 mm (fanned draucht) or 300 mm (natural draught) to an opening in the building fabric formed for the purpose of accommodating
a built-in element such as a window frame, (see Figure C2). Separation distances are linked to the rated heat inputs as shown.
bThis dimension may be reduced to 75 mm for appliances of up to 5 kW heat input.
Minimum dimensions of flue terminal positions

Ferroli F 30
12
3.01 Drilling Template (Top Flue Application)
Select suitable mounting position for boiler, using the template mark flue outlet and boiler mounting points.
Drill two 10mm holes 90mm deep to accept the wall plugs, fit wall plugs. Fit two special wall plugs on the wall as
described in the fig. 12a. Fasten the wall bracket to the wall using an antitheft nut on the right side and a standard nut
(M8) on the left side. Using a core drill cut a 118mm diameter hole for the flue. Mount the boiler on the wall bracket
and fix using an antitheft nut on the left side and a standard nut (M8) on the right side.
1. CH flow (22 mm)
2. Safety Valve (15 mm)
3. Domestic hot water outlet (15 mm)
4. Gas supply (22 mm)
5. Domestic hot water inlet (15 mm)
6. CH return (22 mm) Fig. 12b
75
5 min
195 min
200 min
955 min
200
460 min
123 4 5 6
15 15
Ø3/4''Ø3/4'' Ø1/2''Ø1/2''Ø1/2''Ø1/2''
==
Ø120
jig bracket
Fig. 12a

Ferroli F 30
13
3.02 Restrictor
For boiler operation, the restrictor supplied with the unit must be mounted following the instructions below.
Determine the correct size of flue restrictor required. Before inserting the flue gas duct in the boiler, check that
the restrictor fitted is correct and that it is correctly positioned (see fig. 13).
Holes Ø : 47 50 52
Ø
Fig. 13
Choice of restrictor:
• With concentric pipes: - up to 1m long + one bend, use the 52 mm restrictor.
- for flue lengths over 1 metre, use no restrictor.
• With 2 pipe system: - Calculate the total flow resistance of the air and flue pipes in metres
(cap. 3.04.2)
- utilise the table shown below to choose the more suitable restrictor for
the flow resistance calculated
RESTRICTOR FOR TWO PIPE SYSTEM
ON FERROLI F30
Total flow resistance
of flue system
Use
restrictor
size
minimum maximum mm
0 m 20 m 47
m020 m 35 m 50
35 m 45 m 52
45 m 50 m no restrictor
N.B.: the diameter of the hole is stamped
on the restrictor
No restrictor is required for back
outlet flue

Ferroli F 30
14
A 90° bend (fig. 15) is supplied for the horizontal connection of air and flue gas pipes. This can be angled
towards the chosen wall in degrees of 45°.
3.03 Top Outlet Concentric Flue Connection
3.03.1 Vertical concentric connection
Telescopic
DS
L
125
70
50*
30
95
80
80 -3 mm/m
Ø60 Ø80
70 min.
* = between 10 e 60 mm
190 270
Fig. 15
A vertical connector can be supplied for vertical
discharge with concentric pipes.
The simple mounting and use of double lip gaskets
at the joints makes this an extremely easy and safe
option.
Fig. 14
Concentric
Vertical
Connector
3.03.2 Horizontal concentric connection
L = S + D + 255

Ferroli F 30
15
Fig. 16
Between
10-60 mm
Notes on concentric horizontal installation
To locate the centre of the hole for passing the pipes
through the wall, refer to fig. 12b. Bear in mind that
the two concentric pipes must slope downwards
away from the boiler at a rate of about 3 mm/m to
avoid rainwater entering the boiler. The concentric
pipes making up the air - flue gas duct must be sealed
with the gasket where they join the boiler (fig. 16).
Outside, the pipes should protrude from the wall
between 10 and 60 mm (fig. 16).
3.03.3 Maximum concentric flue length
First table below shows the maximum flue lengths available for boilers with concentric systems.
For correct calculation remember to include the reduction for bends on second table. Please refer to
3.02 for use of restrictor
Maximum flue lenght permissible 100 mm concentric 125 mm concentric
Vertical Horizontal* Vertical Horizontal*
Ferroli F30 4 m 3 m 5 m 5 m
Reduction for bend
100 mm concentric bend 90°1 m
100 mm concentric bend 45°0,5 m
125 mm concentric bend 90°0,5 m
125 mm concentric bend 45°,0,25 m
*For horizontal Flueing the reduction for appliance bend or turret are already included.
max. 3 m
max. 4 m
Fig. 17a Fig. 17b

Ferroli F 30
16
Fig. 18
Ø80Ø80
AIRFLUE
1
2
3.04 Top Outlet: Two Pipe Flue System
3.04.1 Two pipe connection
Two separate ducts Ø80 for air intake and flue gas
discharge can be directly connected to the boiler.
For conversion mount the separate outlet kit 1 to
top outlet (see 3.03)
Insert blanking plate 2
in remaining air intake
Connect flue duct to central hole Ø80 and air duct to left or right air intake hole Ø80. Insert blanking
plate 2 in remaining air intake.
A varied selection of accessories for two pipe systems are available from Ferroli (ref. to page 17). Before
installing your system please check via calculation table at 3.04.2 you are not exceeding the maximum
permissible length for the appliance.
IMPORTANT:
Notes on two pipe system installation:
When using the two pipe system the flue discharge pipe must have a 25mm air gap when passing through combustible
materials. Where the flue discharge pipe passes through the airing space of an airing cupboard it must be protected
by a non combustible guard or expanded metal giving an annular air gap of at least 25mm.
Where the flue discharge pipe passes through a wall containing cavity insulation, a non combustible sleeve must
be fitted. Additionally a gap of 25mm between the sleeve and the insulation should be provided by cutting
back the insulation or packing loose fill bead insulation with mineral fibre. Where the flue pipe is run
through an unheated roof space it should be insulated with non combustible insulating material to prevent
condensation. The flue pipe should be supported at intervals of not more than 1.8m and the support
should be preferably below a joint.
3.04.2 Two pipe flue system
To determine the maximum length of flue and air pipe permissible.
The calculation is based on a standard reference resistance of 1 metre of 80 mm horizontal air intake pipe. For
every configuration of the two-pipe system all components will have a resistance factor based upon this reference.
(I.e. a 90 degree bend fitted in the flue line would attract a resistance factor equivalent to 2.5 Metres of horizontal
80mm pipe). This is expressed as Xmetres. Each boiler will have a maximum equivalent length of flue/air pipe and
this is shown in the table as Nmetres. Therefore when calculating the proposed flue run the equivalent resistance
of every length of pipe and every bend, whether air intake or flue discharge is added together to give an actual
total flue length. The final figure calculated must not exceed the permitted maximum length (N metres) for each
boiler type.
Calculation Routine
1. Identify all the components needed to complete the proposed flue/air pipe run.
2. Calculate the sum of all the equivalent lengths (see table at next page).
3. For boilers, which may require a flue restrictor, refer to table at page 13 (par. 3.02) to ascertain the correct
size and add this resistance to your total.
4. Check and verify that the total flue/air pipe length (flow resistance) does not exceed 50 mt. maximum
permitted for Ferroli F30.
Important: Resistance factors apply to standard férroli components only.

Ferroli F 30
17
AIR FLUE
Vertical Horizontal Vertical Horizontal
Description
Male-female flue /Air pipe
1 m - Ø 80
Female-female bend
45°Ø 80 m
Male-female bend
90°Ø 80 m
Dscription
Horizontal
flue terminal
Ø 80 mm
Air intake
terminal
Ø 80 mm
Outlet flue / air inlet
for concentric system
Ø 100/60 mm
Pipe fitting for
outlet flue
Ø 80 mm
Outlet flue
/ air inlet
for connection
with split end
Ø 80 mm
1112
1,2 2,2
1,5 2,5
REDUCTION
5
2
4
AIR FLUE
Vertical Horizontal Vertical Horizontal
REDUCTION
12
A
c
c
e
s
s
o
r
i
e
s
Ø
8
0
A
c
c
e
s
s
o
r
i
e
s
Ø
8
0
Spigot-and-socket
reduction Ø 100/80 mm
0
3.04.2 (continued)
Tab. 1 - Pipes and
fittings reduction table

Ferroli F 30
18
For further accessories please refer to:
"Flue system manual for room sealed boiler"
Example of calculation for wall inlet/outlet
with 2 pipe system
maximum total flue length: 50 metres
Attention:
Remove the flue diaphragm.
The flue + air Pipes must have a 3% drop away
from the boiler to outside
7 6 325 1
13 m 13 m
Fig. 19
Example of wall inlet/outlet
2 pipe application
Example of roof inlet/outlet
Example of direct roof flue outlet
and wall air inlet
3.04.3 Example of other installation with two pipe systems
Fig. 20a
Fig. 20b Fig. 20c
REF. N° OF PIECES DESCRIPTION LENGTH OR
REDUCTION
1 1 Air bend 80 mm R/D = 0,75 1,5 m
2 13 Horizontal air pipe 13,0 m
3 1 Air wall terminal 2,0 m
5 1 Flue bend 80 mm R/D = 0,75 2,5 m
6 13 Horizontal flue 26,0 m
7 1 Air wall terminal outlet flue 5,0 m
TOTAL 50,0 m

Ferroli F 30
19
For installation (back flue connection):
For direct back flue connection it is necessary to use the optional kit, and it is required to alter the fan
direction inside the boiler.
Follow carefully next procedure:
b
b
a
A
Fig. 21b Fig. 21c Fig. 21d
Remove fan by pulling off electri-
cal connections. Pull off air
pressure switch tubes from the air
pressure switch remove 2 screws
b. Rotate the fan downward to
disengage it from the securing
pin a.
Take off the four screws which
fix the back plate on sealed
chamber, remove and rotate the
plate through 90° and fit it to
the top of the boiler to cover
the original flue outlet. Secure
it in place with the four screws
removed previously.
Fix with 4 screws the connections
for concentric pipe A
Remove fan mounting plate by undoing the three fixing screws "d". Rotate the fan through 90° so that the fan nozzle
points sideways. Secure the fan to the plate in the new position using screws in position "c".
Insert the connection pipe "B" and fix with screw "E".
Fig. 21e
c
d
c
d
d
-
c
Common
For rear outlet
For upper outlet
Fig. 21g
B
E
For rear
outlet
c
c
c
Fig. 21f
d
dd
For upper
outlet
Fig. 21a

Ferroli F 30
20
Fig. 21h
Fix with the screws (b). Refit wiring connections to fan and air pressure switch tubes ensuring correct
orientation. I.E. red tube to air pressure switch connection with red dot (+) and clear tube to air pressure
switch connection with no paint marking (-).
Fit the fan into the boiler rotating the front to engage with the pin a. Secure with the screws b.
Rear
b
b
Back flue outlet (Diagram 1-9)
Fig. 22a Fig. 22b Fig. 22c
1. Core drill 127mm hole (5"). 2. Push through the outer flue. 3. Gently pull back until wall seal
is flush with the wall.
6. Cut the outer flue flush with the
flange on the hanging plate.
80 mm
7. Insert the aluminium flue pipe
into white plastic outer flue,
making sure the aluminium pipe
sits fully and centrally into the
flue terminal. Mark thealuminium
flue pipe at the point it is flush
with the mounting plate. Add
36mm to this mark and cut the
aluminium inner flue pipe at
this point.
Fig. 22g
36 mm
80 mm
Fig. 22f