Fer FERtech 25 OV Instructions For Use, Installation And Maintenance

FERtech 25 OV

INSTRUCTIONS FOR USE INSTALLATION AND MAINTENANCE

cod. 3540U431 - 11/2009 (Rev. 00)

8

Seasonal Efficiency

(SEDBUK)

band A

G C N° 41-267-39

FERtech 25 OV

2

Cod. 3540U431 - 11/2009 (Rev. 00)

• Read the warnings given in this manual thoroughly.
They provide important information for safe instal­lation, use and maintenance

• By law the instruction manual must be left with the
end user.

• If the appliance is sold or transferred to another
owner or if the owner moves, leaving the appliance
behind, always ensure that the manual is kept with
the appliance for consultation by the new owner
and /or installer.

• Incorrect installation or poor maintenance absolves
the manufacturer from all liability for damage to
people or property.

• Installation and maintenance must be carried out
in conformity with current legislation, according
to the manufacturer’s instructions and by qualified
personnel.

• Before service or maintenance work is, carried out
isolate the appliance from the mains electricity
supply.

• In the event of malfunction or faulty operation, iso­late the appliance. Do not attempt to repair or carry
out any other operation on the appliance directly.
Contact qualified personnel only.

• Repairs or the replacement of components must be
carried out exclusively by qualified personnel using
original spare parts only. Failure to respect the above
may compromise the safety of the appliance.

• To guarantee efficient operation, the appliance must
be serviced once a year by a corgi registered engi­neer.

• The appliance may not be used for purposes other
than those for which it was explicitly designed. Any
other use is considered improper and therefore dan­gerous.

• Incorrect installation and use or failure to follow the
instructions provided by the manufacturer absolve
the manufacturer from all liability for damage.

• After unpacking, check that the contents are complete
and undamaged.

• Keep the packaging out of reach of children as it is
potentially hazardous.

• To clean external parts, use a damp cloth moistened
with soapy water if necessary. Avoid using abrasive
cleaning products and solvents.

This symbol indicates “Caution” and is placed next to all safety information.
Strictly follow these instructions in order to avoid danger and damage to persons,
or property.

This symbols calls attention to a note or important information, please read thor­oughly.

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”.

Fer 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.

• "Fer declare that no substances harmful to health are contained in the appliance or used

during the appliance manufacture”.

3

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

1. OPERATING INSTRUCTIONS .................................................................4

1.1 Introduction ............................................................................................................4

1.2 Control panel ..........................................................................................................5

1.3 Turning ON and OFF ..............................................................................................6

1.4 Adjustments ............................................................................................................7

1.5 Maintenance ............................................................................................................8

1.6 Faults .......................................................................................................................8

2. INSTALLATION .......................................................................................9

2.1 General Instructions ................................................................................................9

2.2 Boiler location .......................................................................................................10

2.3 Boiler water connections ......................................................................................11

2.4 Connection to the gas system ..............................................................................14

2.5 Electrical Connections ..........................................................................................14

2.6 Flue system ...........................................................................................................17

2.7 Condensate outlet connection .............................................................................23

3. SERVICE AND MAINTENANCE ............................................................25

3.1 Adjustments ..........................................................................................................25

3.2 System start-up .....................................................................................................26

3.3 Maintenance ..........................................................................................................27

3.4 Troubleshooting ....................................................................................................29

4. TECHNICAL CHARACTERISTICS AND DATA ..........................................................31

4.1 Dimensions and connections ................................................................................31

4.2 General view and main components ....................................................................32

4.3 Hydraulic diagram .................................................................................................33

4.4 Technical data table ..............................................................................................34

4.5 Wiring diagram .....................................................................................................35

BENCHMARK ...........................................................................................36

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FERtech 25 OV

4

Cod. 3540U431 - 11/2009 (Rev. 00)

1. OPERATING INSTRUCTIONS

1.1 Introduction

Dear Customer,
Thank you for choosing FERtech 25 OV, a FER wall-mounted boiler of the latest generation, featuring

advanced design and cutting-edge technology.
FERtech 25 OV is a high-efficiency condensing pre-mix appliance for heating with extremely low emis-

sions, running on natural gas or LPG.
The boiler consists of an aluminium laminar heat exchanger providing effective condensation of the

water vapour contained in the flue gases, permitting extremely high efficiency.
Above the heat exchanger, in the boiler, there is a ceramic surface pre-mix burner, equipped with

electronic ignition and ionization flame control, which achieves extremely low emissions while ensuring
high reliability and long life operation.

The boiler is totally room sealed from the installation room: the air needed for combustion is drawn from
outside. The boiler also includes a modulating speed fan, modulating gas valve, safety valve, temperature
sensors, a safety thermostat and a flue gas sensor.

Thanks to the twin microprocessor control and adjustment system with advanced self-diagnosis, unit
operation is for the most part automatic. The power for heating is automatically governed by the control
system.

The user only has to set the temperature desired inside the home (by means of a room thermostat and
or regulate the temperature of the system). The adjustment and control system will provide optimum
operation throughout the year.

The display continuously provides information on the unit’s operating status and it is easily possible
to obtain additional information on the sensor temperatures, set-points, etc. or configure them. Any
operating problems associated with the boiler or system is immediately signalled by the display and, if
possible, corrected automatically.

5

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

1.2 Control panel

eco/comfort

reset

1

14

11

765

4

3

2

15138

12

fig. 1

1 = Domestic Hot Water temperature setpoint decreasing push button (not used)
2 = Domestic Hot Water temperature setpoint increasing push button (not used)
3 = Central Heating water temperature setpoint decreasing push button
4 = Central Heating water temperature setpoint increasing push button
5 = Display LCD
6 = Reset
7 = On-Off push button

8 = Domestic Hot Water symbol
11 = Multi-function indication
12 = Degrees indication
13 = Central Heating mode operation
14 = Central Heating symbol
15 = Burner on and actual load indication

Indication during boiler operation

Demand mode

The Boiler heat demand (generated by the Programmer, room thermostat and cylinder thermostat) is
indicated by the flashing of the Hot Air symbol over the radiator (part. 13 and 14 – fig. 1). The display
(part. 11 – fig. 1) indicates the actual System water temperature and, during the delay time, the text
“d2”.

eco/comfort

reset

eco/comfort

reset

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fig. 2

FERtech 25 OV

6

Cod. 3540U431 - 11/2009 (Rev. 00)

1.3 Turning ON and OFF

Without main power supply

To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all
water from the system.

Ignition

Ensure the power is on to the appliance.

For the first 120 seconds, the display shows FH that identifies the Air purge function.
During the first 5 seconds, the display shows the software version of the pcb.
Open the gas cock on the boiler and purge the air from the pipework upstream of the gas valve.
When the FH disappears, the boiler is ready to function automatically whenever the external controls
are calling for heat.

Turning off

Press the

eco/comfort

(part. 7 - fig. 1) for 5 seconds.

•

•

•

•

eco/comfort

reset

fig. 3 - Boiler without main power supply

eco/comfort

reset

eco/comfort

reset

fig. 4 - Ignition

eco/comfort

reset

fig. 6 - Turning off

fig. 5 - Air purge

7

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

When the boiler is turned off with this key, the p.c.b is still powered, heating operation is disabled and
the display is off however the frost protection will still be active.

To totally isolate close the gas cock ahead of the boiler and disconnect electrical power.

To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all
water from the system.

To turn the boiler on again, press

eco/comfort

(part.7 - fig.1) for 5 seconds.

The boiler is ready to function automatically whenever the external controls are calling for heat.

1.4 Adjustments

Heating temperature setting

To set the system flow temperature, use the CH push buttons (Part. 3 and 4 – fig. 1). It can be varied
from a minimum of 20°C to a maximum of 90°C.

Room temperature adjustment (using a room thermostat )

Using the room thermostat, set the temperature desired in the rooms. Controlled by the room ther­mostat, the boiler lights and heats the system water to the system delivery setpoint temperature. The
burner shuts down when the desired temperature in the room is reached.

A room thermostat and programmer are a mandatory requirement (Building regulations Doc ‘L’

2002).

eco/comfort

reset

fig. 7

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eco/comfort

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fig. 8

1.6 Faults

In the unlikely event of an operating problem, or component failure, the display flashes and a fault
identification code appears.

FERtech 25 OV

8

Cod. 3540U431 - 11/2009 (Rev. 00)

1.5 Maintenance

It is strongly recommended to carry out annual maintenance of the boiler and heating system. Please
refer to the “maintenance” section in this manual.

The casing, the control panel and the aesthetic parts of the boiler can be cleaned using a soft and damp
cloth, do not use abrasives or solvents.

The boiler is equipped with an advanced self-diagnosis system that signals any faults on the display.
Some faults (“A“ indication) cause a boiler shutdown. In this case, operation must be reset manually by
pressing the

reset

(Part. 6 – fig. 1) for 1 second.

Other faults (“F“ indication) cause temporary shutdowns that are automatically reset as soon as the
value causing the fault comes back within the boiler’s normal working range.

Listed below are some anomalies that can be caused by simple, user-solvable problems.
If the problem remains after two attempts at resetting, contact the Fer Service Centre.
For other faults, refer to section 3.4 “Troubleshooting”.

Fault Cure

No burner ignition

Make sure that the gas cocks ahead of the boiler
and on the meter are open.

Press the RESET button (for 1 second).
In case of repeated shutdowns, contact the Fer-

Service Department.

Before calling a Fer service engineer, check that the problem is not due to there being no gas
or electricity.

9

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

2. INSTALLATION

2.1 General Instructions

This device must only be used for the purpose for which it is specially designed. This unit is
designed to heat water to a temperature below boiling point and must be connected to a heat­ing system and/or a water supply system for domestic use, compatible with its performance,
characteristics and its heating capacity. Any other use is considered improper.

BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSONNEL, IN ACCORDANCE
WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT
LAW, THE RECOMENDATION OF BS STANDARDS, ANY LOCAL REGULATIONS AND THE RULES OF
COMPETENT WORKMANSHIP.

Incorrect installation can cause damage or physical injury for which the manufacturer declines any re­sponsibility.

This appliance must be installed strictly in accordance with these instructions and
regulations:

The Gas Safety Regulations (Installations & Use).
The Local Building Regulations.
The Building Regulations (Part L).
The Buildings Standards (Scotland - Consolidated) Regulations.
British Standards Codes of Practice:
B.S. 5440 Part 1 Flues
B.S. 5440 Part 2 Air supply
B.S. 5449 FORCED CIRCULATION HOT WATER SYSTEMS
B.S. 6798 INSTALLATION OF GAS FIRED HOT WATER BOILERS
B.S. 6891 GAS INSTALLATIONS
B.S. 7671 IEE WIRING REGULATIONS
B.S. 4814 SPECIFICATION FOR EXPANSION VESSELS
B.S. 5482 INSTALLATION OF LPG
B.S. 7593 TREATMENT OF WATER IN DOMESTIC HOT WATER CENTRAL HEATING SYSTEMS
B.S. 5546 INSTALLATION OF HOT WATER SUPPLIES FOR DOMESTIC PURPOSES

Model Water Bye Laws
B.S. 5955-8 PLASTIC PIPEWORK INSTALLATION

For Northern Ireland the rules in force apply

FERtech 25 OV

10

Cod. 3540U431 - 11/2009 (Rev. 00)

Minimum

A

B

D

2,5 cm

20 cm

60 cm
(via an openable panel)

C 30 cm

Table 1

fig. 9

A A

B

D

C

2.2 Boiler location

The unit’s combustion chamber is sealed
off from the installation room and therefore
requires no compartment ventilation.

The installation room must be sufficiently
well ventilated to prevent any dangerous
conditions from forming in the event of even
slight gas leakage. This safety standard is
required by the EEC Directive no. 90/396 for
all gas units, including those with a so-called
sealed chamber.

Therefore the place of installation must be
free of dust, flammable materials or objects
or corrosive gases. The room must be dry
and not subject to freezing.

The boiler is designed to be installed on a
solid wall. The wall fixing must ensure a stable
and effective support for the appliance, using
the bracket and fixings supplied.

If the unit is enclosed in a cupboard or
mounted alongside, there must be space
for normal maintenance work. Fig. 9 and
tab. 1 give the minimum clearances to leave
around the unit.

Safe Handling of Substances

Care should be taken when handling the boiler
insulation panels, which can cause irritation to the skin. No asbestos, mercury or CFCs are included in
any part of the boiler.

Product Handling Advice

When handling or lifting always use safe techniques - keep your back straight, bend your knees, don’t
twist - move your feet, avoid bending forwards and sideways and keep the load as close to your body
as possible.

Where possible transport the boiler using a sack truck or other suitable trolley.
Always grip the boiler firmly, and before lifting feel where the weight is concentrated to establish the

centre of gravity, repositioning yourself as necessary.

11

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

fig. 10

2.3 Boiler water connections

The heating capacity of the unit should be previously established by
calculating the building’s heat requirement according to current regu­lations. For good operation and long life of the boiler, the plumbing
system must be well proportioned and always complete with all those
accessories that guarantee regular operation and running, room ther­mostat, trv’s etc. The flow and return must be a minimum diameter of
22mm for the first 3 metres from the appliance.

If the flow and return pipes follow a path where air pockets could form
in certain places, it is essential to install vent valves at these points.
Also, install type “A” drain cock device at the lowest points in the
system to allow complete draining.

The temperature differential between the flow manifold and the return
to the boiler should not exceed 20° C.

A minimum flow of 6 litres/min is required through the heat exchan­ger, calibrated on site. An automatic by-pass must be fitted to the
system.

Do not use the water system pipes to earth electrical applian­ces.

Before installation, carefully flush all the pipes of the heating system
to remove residues or impurities that could affect the unit’s operation
(BS 7593 Building regs Doc L).

Make the connections to the appliance as shown in fig. 10.

Key

1 System flow (22 mm compression union)
3 Gas inlet (22 mm with isolation valve fitted)
5 System return - 22 mm compression union)

Make the boiler connection in such a way that its internal pipes are free of stress.

400

45

50

213

187

135

630

80 120

45 25

144

35

1 5

120

3

FERtech 25 OV

12

Cod. 3540U431 - 11/2009 (Rev. 00)

fig. 11

Make Up Water

This appliance is designed to work on an open vented fully pumped heating system only, (see fig 12 page

13). The make up of water must be made via a suitably sized cold feed and expansion tank installed to
the current regulations.

This appliance is not suitable for gravity type installations or primatic type cylinders only indirect ones
should be used.

The system must be fully pumped due to the complex design of the Aluminium Laminar heat exchang­ers high efficiency design.

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.

The connecting kits shown in fig. 4 are supplied as standard.

Key

A = Nut
B = Compression olive
C = Nipple
F = 1/2 gas seal - Blue

Gas isolation valve

AB

F

A

22

mm

22

mm

ACBB

X2

X1

Flow

Return

13

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

To DHW taps

min. 2 m

max.

150 mm

Isolating valve

Drain

Flow

Return

Open
Vent

Motorised valve
22 mm
DHW

Isolating

valve

CH Pump

Automatic By-pass

Motorised valve
22 mm CH

Balancing

valve

15 mm

22 mm

Indirect cylinder

Indirect coil missing

45°

500 mm

Open
Vent

Static Head

Radiator Radiator

Schematic layout for fully pumped heating and hot water. (Close couple)

Fig. 12

FERtech 25 OV

14

Cod. 3540U431 - 11/2009 (Rev. 00)

2.5 Electrical Connections

The unit must be installed in conformity with current national and local regulations.

Connection to the electrical Supply

The boiler must be connected to a single-phase, 230 Volt-50 Hz electric supply.

The unit’s electrical safety is only guaranteed when correctly connected to an efficient earthing
system executed according to current safety standards. Have the efficiency and suitability of the
earthing system checked by professionally qualified personnel. The manufacturer is not responsible
for any damage caused by failure to earth the system. Also make sure that the electrical system
is adequate for the maximum power absorbed by the unit, as specified on the boiler dataplate,
in particular ensuring that the cross sectional area of the system’s cables is suitable for the power

absorbed by the unit.
The boiler is prewired and provided with a cable and fitted with a 3 amp plug for connection to the
electricity supply.

Water treatment

If treatment is used fer limited recommended only the use of Fernox or Sentinel water treatment products,
which must be used in accordance with the manufactures instructions. for further information contact:

Fernox Manufacturing Co. LTD. Sentinel Performance Solutions Ltd
Cookson Electronics, Forsyth Road The Heath Business & Technical Park
Sheerwater, Woking, surrey, GU21 5RZ Runcorn, Cheshire WA7 4QX
Tel: [phone] Tel: [phone]

Note - If the boiler is installed on an existing system any unsuitable additives must be removed by tho­rough cleansing. All systems should be cleansed according to B.S. 7593.

Note - In hard water areas treatment to prevent lime scale may be necessary.
Note - It is important that the correct concentration of the water treatment product is maintained in

accordance with the manufacturers instructions.

2.4 Connection to the gas system

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.
Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for LPG.

Do not use pipes of a smaller size than the boiler inlet gas connection (22 mm).

The complete installation must be tested for gas soundness and purged as described in BS689.

All pipework must be adquately 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. This appliance has no facility to check the burner pressure and the gas

valve is sealed and should not be adjusted. A combustion test can be carried out (see page 28

combustion analyser testing).

The isolation kit shown in Fig. 11 is supplied as standard.

15

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

fig. 13

The user must never change the unit’s power cable. If the cable gets damaged, switch off the unit
and have it changed only by professionally qualified personnel. If changing the electric power cable,
use only “HAR H05 VV-F” 3x0.75 mm2 cable with a maximum outside diameter of 8 mm.

Access to the electrical terminal block

Follow the instructions given in fig. 13 to access the electrical connection terminal block. The layout of
the terminals for the various connections is given in the wiring diagram in the Technical Data chapter.

Key

62 Time Clock (optional)

fig. 14

Room thermostat

Remove connections 5 - 6 if external control fitted.
If using external controls the switched line can be connected into terminal 5 of the electrical
block ( see fig 15 and 16 ).

Warning: the
room thermo­stat works at
230V

FERtech 25 OV

16

Cod. 3540U431 - 11/2009 (Rev. 00)

Central heating Demand

The heat demand can be controlled by the room thermostat (terminal 5-6) or by a switch line 230 V
(terminal 5).

Standard Systems

For a general pipe layout and wiring diagram on the “S” and “Y” plan systems please see fig.

15a, 15b, and 16a, 16b.

Wiring diagram

4321

Junction Box

NEL

Terminal 5 - SWITCH LINE

12345678910

PROGRAMMER

DHW ON

CH ON

NEUTRAL

LIVE

CH

zone

valve

DHW

zone

valve

Room Thermostat

Cylinder Thermostat

N
E
L

230 Vac

BROWN BLUE

GREY ORANGE

L

6

5

Central
heating

pump

N

E

L

Pre-Fitted flex

from boiler

Fig. 15b

Remove
Link
between
terminals 5-6

OPTIMAX
FERROLI

BOILER

Balancing
valve

C.H.
Zone Valve

Automatic

bypass

(mimimum flow of 6l/min.)

A.A.V

A.A.V

DHW
zone
valve

*Note: cold feed and expansion

not shown for clarity
(see fig. 12)

Auto air vent

Fig. 15a

FERtech “S” Plan

Pipe layout

17

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

fig. 16b

Wiring diagram

4321

Junction Box

NL

12345678910

PROGRAMMER

NEUTRAL

LIVE

CH ON

DHW ON

DHW OFF

BLUE

WHITE

GREY

ORANGE

Room Thermostat

Cylinder Thermostat

N
E
L

240 Vac

Honeywell V4073H mid position

3 WAY ZONE VALVE

2

1

C

Terminal 5 - SWITCH LINE

L

6

5

Central
heating

pump

NE

L

Pre-Fitted flex

from boiler

Remove
Link
between
terminals 5-6

2.6 Flue system

The unit is “type C” with a sealed chamber and forced draught, the air inlet and flue outlet must be
connected to one of the following flue systems. With the aid of the tables and methods of calculation indi­cated, before commencing installation, it is first necessary to check that the flue system does not exceed
the maximum permissible length. The current standards and local regulations must be observed.

It should be noted that only Fer flue system and accessories should be used on this appliance,
as per BS 5440 2000 and C.E. test certification.

FERtech “Y” Plan

Pipe layout

Auto air vent

Automatic

bypass

(mimimum flow of 6LTR/min.)

OPTIMAX
FERROLI

BOILER

Balancing
valve

A.A.V

A.A.V

*Note: cold feed and expansion

not shown for clarity
(see fig. 15)

fig. 16a

FERtech 25 OV

18

Cod. 3540U431 - 11/2009 (Rev. 00)

* = between
10 e 60 mm

* = between
10 e 60 mm

80

84

95

50*

80

95

30

50*

Standard 041025G0
Flue kit

200 200

30

P

125

S

DS50*

L

30

95

84

L

DS

200 200

144

Drill the wall 10÷20 mm
more than the
pipe diameter

200200

144

Drill the wall 10÷20 mm
more than the pipe diameter

Install level

Install level

Install level

Install level

Side view

View from above

fig. 17a

Side Outlet

fig. 17b

Front view

View from above

P = S + 129 mm

Rear Outlet

L = S + D + 185 mm

Connection with concentric flue system

The unit can be connected to a concentric air/flue duct with a Horizontal or Vertical outlet as shown on
the following drawings. Numerous accessories are available on request to meet the various installation
requirements. Please refer to our “flue manual” or the price list.

Standard concentric flue installation

Horizontal flue installation

1. Define the position for installing the unit.

2. If using standard flue (041025G0) this must be installed level, for non-standard flue lengths over 1mtr

a fall of 3 mm per metre should be incorporated back to the boiler.

3.

Make a hole of diameter 10 - 20 mm greater than the nominal diameter of the concentric pipe used.

4. If necessary, cut the terminal length to size, ensuring that the external pipe protrudes from the wall

by between 10 and 60 mm (fig. 17a and 17b). Remove the cutting burrs.

5. Connect the flue to the boiler, positioning the seals correctly. Seal the flue into the wall with silicone

or sand + cement and cover with wall seals provided.

Flue seals should be lubricated with a silicone type grease to prevent damage (grease not sup­plied)

19

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

Pitch roof slate

1KWMA82U

1KWMA56U

950

50

041002X0

95050

50 950

50

max. 6 mt 60/100

max. 16 mt 80/125

Vertical Terminal

1KWMA83U

120

1000 125

10

Vertical Outlet

fig. 17c

Reduction factors for bends

1 m

0,5 m

0,5 m

0,25 m

Table 2b

Maximum permissible
duct length (Horizontal)

Ø mm

60/100

5 m 15 m

Ø mm

80/125

Table 2a

Maximum permissible
duct length (Vertical)

6 m 16 m

The total length in equivalent metres of the concentric flue must not exceed the maximum lengths stated
in the following table, note that each bend gives rise to the stated reduction. For example, a duct = 60/100
composed of 1 bend of 90° +1 horizontal metre + 2 bends of 45° + 1 horizontal metre has a total equivalent
length of 4 metres.

Vertical flueing

The installation of a concentric vertical flue can be carried out as follows,
Install the appliance as previously mentioned in this manual.

1. Connect onto the flue assembly at the top of the appliance a concentric vertical adaptor part number
1KWMA71W,

2. Use the required amount of 1mtr flue extensions (part number 1KWMA56U) inserting them spigot
down ensuring the seals are well lubricated with silicone grease (not supplied) and correctly located
into the sockets.

3. If required 45° bends (Part number1KWMA64A)
may be used with a resistance value of 0.5mtrs
each, the flue should be routed in such away
to avoid any unnecessary deviation and thus
minimise the amount of bends required.

4. The termination should be made through our
concentric flue outlet (part number 1KWMA83U)
in conjunction with a roof slate pitched (part
number 1KWMA82U) or flat roof (part number
1KWMA81U) The storm collar must be fixed on
using the three screws provided and sealed with
an external grade silicone (not supplied).

5. For longer flue lengths a 125mm concentric flue
system is available.

6. All flue installations must comply with BS5440
part 1 and must only be of Fèrroli manufacture.
The vertical flue must continually rise and be
supported throughout its length. The flue must
be inspected whilst commissioning the appliance
to ensure it is sound throughout its length.

This information is for guidance purposes and Fèr­roli will in no way be held responsible for incorrect
installation following this guide.

FERtech 25 OV

20

Cod. 3540U431 - 11/2009 (Rev. 00)

Ref.

2

4

5

36

29

1

Vertical air pipe Ø80

Vertical flue pipe Ø80

80 Ø vertical flue Kit

Description

Equivalent

loss

36 m

46,4 m

12,0 m

94,4 m

Total

Table 3

fig. 19

Connection with 80 mm pipe system

The unit can be connected to a system of separate air/flue
pipes for a Horizontal or Vertical outlet as shown fig 18 - 19
. Numerous accessories are available on request to meet
the various installation requirements. The components
used most frequently are stated in tables 4 - 5. Please
refer to the flue manual or the price list for additional
components.

To check you do not exceed the maximum permissible
flue length, it is necessary to make a simple calculation
before installation:

1. For each component, tables 4 - 5 provide an “equiva-

lent loss in linear metres”, depending on the position
of installation of the component (with air intake or flue
extraction, vertical or horizontal).

The loss is called “equivalent length” since it is compared

to the loss of one metre of flue (defined as equal to 1).
For example, a bend at 90° of Ø80 in flue extraction has
an equivalent loss of 2 linear metres, i.e. it has a loss
equal to that of 2 linear metres of flue length.

2. After completely defining the layout of the system of split

flues, add up the losses in equivalent metres, depending
on the installation position, of all the components and
accessories in the system.

3. Check that the total calculated loss is less than or equal

to 95 equivalent metres, i.e. the maximum permissible
for this model of boiler.

For complete flue options please contact fer or
check our comprehensive flue manual.

4

5

1KWMA83W

1KWMA82U

1KWMA84U

2

120

120

80

80

Ø80

AIR

Ø80

FLUE

Remove
the closing
cap

144

041039X0

041039X0

fig. 18

21

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

1KWMA86A

1KWMA85A

1KWMA84U

Air Flue

Vertical

Horizontal

Vertical

Horizontal

1KWMA65W

1KWMA01W

1KWMA83W  1,00 m

Description

Pipe Ø 80

male-female

Bend 45° Ø 80 mm

male - female

Bend 90° Ø 80 mm

male - female

Description

Horozontial

flue terminal

Horozontial
air terminal

Vertical flue

terminal

1 1 1.6 2

1.2 1.8

1.5 2.0

Equivalent losses in

metres (linear)

5

2

Air Flue

Vertical

Horizontal

Vertical

Horizontal

Equivalent losses in

metres (linear)

12

Accessories Ø 80 Accessories Ø 80

Table 4 Table 5

The stated loss values refer to genuine Fer flue accessories.

Terminal Position

P

D, E

Q

Q

l

B

C

A

G

F

L

J

H

H

K

N

N

MM

Q

fig. 20

Table of Ø80 flue and accessory

FERtech 25 OV

22

Cod. 3540U431 - 11/2009 (Rev. 00)

Minimum Dimensions of Flue Terminal Positions

Directly below an opening, air brick,
opening windows, etc.

Above an opening, air brick,

opening windows, etc.

Horizontally to an opening, air brick,

opening windows, etc.

Below gutters, soil pipes or drain pipes

Below balconies or car port roof

Below eaves

From a vertical drain pipe or soil pipe

From an internal or external corner

From a surface facing the terminal

From a terminal facing the terminal

From the wall on which the terminal is mounted

From a vertical structure on the roof

Above intersection with roof

Horizontally from a terminal on the same wall

Vertically from a terminal on the same wall

From an opening in the car port (e.g. door,
window) into the dwelling

Above ground roof or balcony level

300mm

300mm

300mm

200mm

75mm

200mm

150mm

100mm

300mm

600mm

300mm

300mm

150mm

1200mm

1200mm

1500mm

N/A

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

NOTE

N/A = Not applicable

In addition, the terminal should not be nearer than 150mm (fanned draught) to an opening
in the building fabric formed for the purpose of accommodating a built-in element such as
a window frame. A terminal guard must be used if the terminal is less than 2 metre's from
the ground.

Condensing Terminal Positions: If the flue is to be terminated at low level, then the
potential effect of the plume must be considered.

The plume should not be directed:

across a frequently used access route

across a neighbouring property

towards a window or door

23

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

Connection to collective flues or single flues with natural draught

If you are then going to connect the FERtech 25 OV boiler to a collective flue or a single flue with
natural draught, the flue must be expressly designed by professionally qualified technical personnel in
conformity with the standards and rules in force.

In particular, flues must have the following characteristics:

• Be sized according to the method of calculation stated in the standard

• Be airtight to the products of combustion, resistant to the fumes and heat and waterproof for the
condensate

• Have a circular or square cross-section (some hydraulically equivalent sections are permissible), with
a vertical progression and with no constrictions

• Have the flue conveying the hot fumes adequately distanced or isolated from combustible mate­rials

• Be connected to just one unit per floor, for at most 6 units in all (8 if there is a compensation duct or
opening)

• Have no mechanical suction devices in the main ducts

• Be at a lower pressure, all along their length, under conditions of stationary operation

• Have at their base a collection chamber for solid materials or condensation of at least 0.5 m, equipped
with a metal door with an airtight closure.

2.7 Condensate outlet connection

The boiler is equipped with an internal air-trap to drain off the condensate. Fit the inspection coupling
A and the hose B, pushing it on for approximately 3 cm and securing it with a clamp.

Fill the air-trap with approximately 0.5 ltrs of water and connect the hose to the waste system, or
soakaway.

fig. 21

0,5 lt.

FERtech 25 OV

24

Cod. 3540U431 - 11/2009 (Rev. 00)

External

32/40mm Solvent weld pipework

Cement seal

100mm Dia tube

Bottom sealed

Lime stone chippings

Ground level (either/Or)

Hole depth 400mm

25mm

2 Rows of
3x12 mm Holes

Internal

-300mm

fig. 22

Condensate discharge

Where possible the condensate should discharge into an internal soil pipe or waste system. The minimum
pipe diameter required is 22 mm, a trap has already been fitted to the appliance with a flexible tail to
facilitate the connection to the condensate discharge pipe.

The pipe should be a solvent weld plastic, not copper, as the condensate has a ph value of 4 (slightly
acidic).

Where it is not possible to terminate internally, the condensate discharge pipe may be run outside (see
below drawing).

Any external run is subject to freezing, in severe weather conditions. To avoid this the pipework should
be installed to dispose of the condensate quickly, with as much as possible run internally, before passing
through the wall.

Pipework external to the building should be increased in diameter to 32 or 40 mm solvent weld. It should
be run to a external drain or soakaway, with a maximum length of 3 metres.

When a soakaway (condensate absorption point) is used, it should be constructed as shown below, or
use a specifically designed unit, for example Mc Alpine SOAK1GR available from most plumbing and
heating stockists.

25

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

fig. 23

3. SERVICE AND MAINTENANCE

3.1 Adjustments

All adjustment and conversion operations must be carried out by Qualified Personnel such as fer Tech­nical Service.

FER declines any responsibility for damage or physical injury caused by unqualified and unauthorized
persons tampering with the device.

Gas supply conversion

The unit can function with either Natural Gas or LPG (commercial propane)and is factory-set for use with
one of the two gases, as clearly shown on the packing and on the unit’s dataplate. Whenever a different
gas to that for which the unit is preset has to be used, a conversion kit will be required, proceeding as
follows:

1 Remove the casing.
2 Open the sealed chamber.
3 Release the fixing clip C and remove the gas pipeA from the fan - venturi assembly.
4 Replace the nozzle B inserted in the gas pipe with that contained in the conversion kit.
5 Reassemble the gas pipe A with the clip and check the seal of the connection.
6 Apply the plate contained in the conversion kit, near the dataplate.
7 Refit the sealed chamber and casing.
8 Adjust the parameter for the specific type of gas to be used:

- Turn the boiler onto standby

- Press the DHW buttons (part. 1, 2 - fig. 1) for 10 seconds: the display will show “P01”

blinking

- Press the DHW buttons (part. 1, 2 - fig. 1) to set parameter 00 (for natural gas operation)

or 01 (for LPG operation)

- Press the DHW buttons (part. 1, 2 - fig. 1) for 10 seconds

- The boiler will go back onto standby

9 Check working pressure.
10 Check CO2mixture as detailed (page 28 combustion analyser testing).

FERtech 25 OV

26

Cod. 3540U431 - 11/2009 (Rev. 00)

3.2 System start-up

Commissioning must be performed by Qualified Personnel.
Checks to be made at first ignition, and after all maintenance operations that involved discon­necting from the systems or an intervention of a safety device.

Before lighting the boiler:

• Open any isolation valves between the boiler and the system.

• Check the tightness of the gas system, proceeding with caution and use gas leak detection fluid to
detect any leaks in connections.

• Check the pre-filling of the expansion tank (ref. sec.4.4)

• Fill the water system and make sure that all air contained in the boiler and the system has been vented
by opening the air vent valve on the boiler and any vent valves on the system.

• Make sure there are no water leaks in the system, hot water circuits, connections or boiler.

• Make sure the electrical system is properly connected.

• Make sure that the unit is connected to a good earthing system.

• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler.

• Vent and spin the pump.

• Ensure the flue system is correctly fitted, including terminal locations.

Ignition

• Open the gas valve upstream of the boiler.

• Purge the air from the installation pipework to the appliance.

• Switch on the boiler electrical supply.

• Press the

eco/comfort

key on the boiler for 5 seconds (part. 7 - fig. 1).

• The boiler is now ready to function automatically whenever the external controls call for a demand.

In case of an electrical power failure while the boiler is working, the burner will go out. When
power returns, the boiler will run the self-test cycle again, after which the burner will automatically
re-ignite (if there is still demand for heat).

Checks during operation

• Check the tightness of the gas circuit and water systems.

• Check the efficiency of the flue and air-flue ducts while the boiler is working.

• Check that the water is circulating properly between the boiler and the system.

• Make sure that the gas valve modulates correctly.

• Check the proper ignition of the boiler by performing various tests, turning it on and off with the
room thermostat or remote control.

• Make sure that the fuel consumption indicated on the meter corresponds to that given in the technical
data table in section 4.4 page 33

Turning off

Press the

eco/comfort

key for 5 seconds (

part. 7 - fig. 1

).

27

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

3.3 Maintenance

The following operations are strictly reserved for Qualified Personnel, such as corgi registered
engineers or Fer engineers.

Seasonal inspection of the boiler and flue

It is advisable to carry out the following checks at least once a year:

• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function correctly.

• The flue terminal end piece and ducts must be free of obstructions and leaks.

• The gas and water systems must be sound.

• The burner and exchanger must be clean.

• The electrodes must be free of scale and correctly positioned.

• The system pressure when cold must be approx 1 bar; otherwise, bring it to that value.

• The expansion vessel must be filled to 1 bar cold with zero system pressure.

• The gas flow and pressure must correspond to that given in table 10 section 4.4 page 33.

• The circulating pump must be vented and free of debris.

• The returned filter cleaned.

• The condensate trap inspection bowl should be cleaned and free of debris.

FERtech 25 OV

28

Cod. 3540U431 - 11/2009 (Rev. 00)

fig. 24

fig. 25

Opening the casing

To open the boiler casing, you need to follow the sequence given below
and the instructions of fig. 24.

1 Using a screwdriver, fully unscrew and remove the 2 screws “A ”
2 Open by lowering the panel “B ”
3 Lift and take off the casing “C ”

Cleaning the boiler and burner

The body and burner must not be cleaned with chemical products or wire brushes. Special care must
be taken over all the sealing systems pertaining to the sealed chamber (gaskets, cable clamps, etc.). In
addition, it is necessary to pay attention after performing all these operations to check and carry out all
the phases of ignition and thermostat operation, the gas valve and circulation pump.

After these checks, make sure there are no gas leaks.

Combustion analysis

It is possible to analyse the combustion
through the air and flue sampling points
shown in fig. 25.

To make the measurement, it is neces­sary to:

1) Open the flue sampling point

2) Insert the probe;

3) Press CH button (part. 3, 4 - fig. 1) for

5 seconds to turn on TEST mode;

4) Wait 10 minutes for the boiler to sta­bilize

5) Take the measurement.

NAT GAS; CO2 reading should be 8.7 to 9.0%
L.P.G; CO2 reading should be 9.5 to 10%

Readings taken with an unstabilized boiler will cause measurement errors.

B

A

C

A

Air

Flue gas

Air Flue gas

29

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

3.4 Troubleshooting

Fault Diagnosis

In the event of operating problems or trouble, the display will flash and a fault identification code
appears.

There are faults that in order to restore operation the RESET button must be pressed (ref.6 - fig. 1); or
if the boiler fails to start, it will be necessary to repair the fault (code nos. F1 to F24). Other faults cause
temporary shutdowns that are automatically reset as soon as the value comes back within the boiler’s
normal working range (codes from 25 to 47).

When the boiler starts functioning normally again, the display stops flashing and the fault code disap­pears.

Fault Possible cause Cure

A01

No burner ignition

No gas

Check the regular gas fl ow to the boiler and the air
has been purged from the pipes.

Detection or ignition electrode fault

Check that the electrodes are correctly positioned
and free of any deposits

Defective gas valve Check and change the gas valve

Incorrect inlet gas pressure Check inlet gas pressure

Siphon obstructed Check and if necessary change the siphon

A02

Flame detected with the burner off

Ionisation electrode defective Check the ionizing electrode wiring

Main board defective Check the PCB

A03

High limit protection

Flow sensor not active or correctly
located

Check the correct positioning and operation of the
fl ow sensor

No system circulation

Check the pump and radiator valves present in the
system and automatic by-pass

A04

Flue gas fault

Fault F07 happened 3 times in the
last 24 hours

Check the fl ue

A05

Fan problem

Tachometer signal interruped for
1 hour

Check the wiring and the fan

A06

No fl ame after the ignition phase (6
times in 4 min.)

Detection electrode fault

Check that the electrode is correct positioned and if
necessary change it

Flame instable Check the burner

Incorrect valve gas Offset Check Offset at the minimum power

Flue gas circuit obstructed Check if fl ue gas circuit is free

Siphon obstructed Check and if necessary change the siphon

A41

Flow sensor disconnected Sensor disconnected

Check the correct position and operation of the fl ow
sensor

F07

Flue gas fault

The exhaust gases temperature
becomes higher than 95°C for 2
minutes longer.

Check the fl ue

F10

Flow sensor fault

Sensor damaged or short circuited Check the wiring or change the sensor

Sensor damaged or wiring broken Check the wiring or change the sensor

F11

Return sensor fault

Sensor damaged or wiring shorted Check the wiring or change the sensor

Sensor damaged or wiring broken Check the wiring or change the sensor

FERtech 25 OV

30

Cod. 3540U431 - 11/2009 (Rev. 00)

Fault Possible cause Cure

F13

Flue sensor fault

Sensor damaged or wiring shorted Check the wiring or change the sensor

Sensor damaged or wiring broken

Check the wiring or change the
sensor

F14

Flow sensor fault

Sensor damaged or short circuited Check the wiring or change the sensor

Sensor damaged or wiring broken Check the wiring or change the sensor

F15

Fan problem

Tachometer signal interrupted, fan
connection

Check the wiring and fan

Fan damaged, debris in fan Check the fan, clean debris

F34

Supply voltage under 180V. Electric mains fault Check the electrical system

F35

Irregular mains frequency Electric mains fault Check the electrical system

F42

Flow sensor fault Sensor damaged Change the sensor

31

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

4. TECHNICAL CHARACTERISTICS AND DATA

4.1 Dimensions and connections

Key

1 System flow (22 mm compression union)
3 Gas inlet (22 mm with isolation valve fitted)
5 System return - 22 mm compression union

fig. 26

80 120

45 25

144

35

1 5

120 80

280

400

45

50

213

187

135

3

630

FERtech 25 OV

32

Cod. 3540U431 - 11/2009 (Rev. 00)

4.2 General view and main components

fig. 27

5 Room sealed compartment
7 Gas inlet
10 CH flow
11 CH return
16 Premix fan assembly
19 Combustion compartment
22 Main burner
29 Flue Collar
44 Gas valve

201

191 29

22

81
82

161

154

196

19

278

5

16

186

44 7

193

10

11

81 Ignition electrode
82 Ionisation electrode
154 Condensate outlet pipe
161 Heat exchanger
186 Return sensor
191 Flue gas temperature sensor
196 Condensate collector
201 Fan Venturi
278 Double sensor (Safety + Heating)

33

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

4.3 Hydraulic diagram

fig. 28

Key

7 Gas inlet
10 CH flow
11 CH return
16 Premix fan assembly
44 Gas valve

154 Condensate outlet pipe

161 Heat exchanger
186 Return sensor
193 Siphon
278 Double sensor (Safety + Heating)

10

7

186

161

278

154

16

11

193

44

Drain off
valve

FERtech 25 OV

34

Cod. 3540U431 - 11/2009 (Rev. 00)

4.4 Technical data table

Maximum working temperature in heating °C
Total boiler water content litres

Weight empty kg

Max electrical power absorbed

W

85

1.5

27

50

Max. CH Heat input

Max. natural Gas flow rate (G20)

Natural Gas supply pressure (G20)

Max. LPG flow rate (G31)

LPG supply pressure (G31)

kW 26.6

5.7

m

3

/h

20

mbar

2.67

0.56

kg/h

37

mbar

1.97

0.41

Max. useful heat output 80° C - 60° C

Max. useful heat output 50° C - 30° C

Max. CO2 (G20 - Natural Gas) %

Max. CO2 (G31 - Propane) %

Max. flue gas temperature 80°C - 60°C °C

Max. flue gas temperature 50°C - 30°C °C

Max. flue gas flow rate kg/h

kW 25.2

5.3

kW 24.6

5.2

NOx emission class

5

Energy marking (92/42 EEC directive)

Table 10

Gas Injector (G20 - Natural Gas)

Gas Injector (G31 - Propane)

Electrical protection rating IP
Power voltage/frequency

V/Hz

X5D

230/50

%

%

%

98.3

97.3

105.4

107.2

109.1

Max. working pressure in heating bar

3

0.3

Type of unit

C13-C23-C33-C43-C53

C63-C83-B23-B33

PIN CE

0063 BR 3161

kW

kW

kW

%

%

m

3

/h

kg/h

°C

°C

kg/h

bar

Min. CH Heat input

Min. useful heat output 80° C - 60° C

Min. useful heat output 50° C - 30° C

Min. natural Gas flow rate (G20)

Min. LPG flow rate (G31)

Unit Value

Min. flue gas temperature 80°C - 60°C

Min. flue gas temperature 50°C - 30°C

Min. flue gas flow rate

Min. working pressure in heating

Efficiency Pmax 80° C - 60° C
Efficiency Pmin 80° C - 60° C
Efficiency Pmax 50° C - 30° C

Efficiency Pmin 50° C - 30° C

Efficiency 30%

6.20

4.7

9.2

42.4

10

Min. CO2 (G20 - Natural Gas) %

9

8.5

Min. CO2 (G31 - Propane)

%

9.5

64
60

46
31

Heating expansion pressure tank capacity
Heating expansion pressure prefilling pressure

litres

bar

8
1

35

FERtech 25 OV

Cod. 3540U431 - 11/2009 (Rev. 00)

Key

16 Fan
44 Combination gas valve
62 Time clock (optional)
81 Spark Electrode
82 Ionisation electrode
101 Main p.c.b.
103 Relay
104 Fuse F3.15 amp

186 Return temperature sensor
191 Exhaust temperature sensor
202 Transformer 230V-24V
203 Supply lead
278 Double sensor (Safety + Heating)

fig. 29

4.5 Wiring diagram

BENCHMARK

CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes

TIME & TEMPERATURE CONTROL TO HEATING ROOM T/STAT & PROGRAMMER/TIMER PROGRAMMABLE ROOMSTAT

TIME & TEMPERATURE CONTROL TO HOT WATER CYLINDER T/STAT & PROGRAMMER/TIMER

COMBI BOILER

HEATING ZONE VALVES FITTED NOT REQUIRED

HOT WATER ZONE VALVES FITTED NOT REQUIRED

THERMOSTATIC RADIATOR VALVES FITTED

AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED

FOR ALL BOILERS CONFIRM THE FOLLOWING

THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER’S INSTRUCTIONS?

THE SYSTEM CLEANER USED

THE INHIBITOR USED

FOR THE CENTRAL HEATING MODE, MEASURE & RECORD

GAS RATE ft3/hr

BURNER OPERATING PRESSURE (IF APPLICABLE) mbar

CENTRAL HEATING FLOW TEMPERATURE °C

CENTRAL HEATING RETURN TEMPERATURE °C

FOR COMBINATION BOILERS ONLY

HAS A WATER SCALE REDUCER BEEN FITTED? YES NO

WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED?

FOR THE DOMESTIC HOT WATER MODE, MEASURE & RECORD

GAS RATE ft3/hr

MAXIMUM BURNER OPERATING PRESSURE (IF APPLICABLE) mbar

COLD WATER INLET TEMPERA

TURE °C

HOT WATER OUTLET TEMPERATURE °C

WATER FLOW RATE

lts/min

FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING

THE CONDENSATE DRAIN HAS BEEN INSTALLED IN ACCORDANCE WITH
THE MANUFACTURER’S INSTRUCTIONS? YES

FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING

THE HEATING AND HOT WATER SYSTEM COMPLIES
WITH CURRENT BUILDING REGULATIONS

THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONED
IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS

IF REQUIRED BY THE MANUFACTURER, HAVE YOU RECORDED A CO/CO2 RATIO READING? N/A YES CO/CO2 RATIO

THE OPERATION OF THE APPLIANCE AND SYSTEM
CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER

THE MANUFACTURER’S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER

m3/hr

m

3

/hr

COMMISSIONING ENG’S NAME PRINT CORGI ID No.

SIGN DATE

BOILER SERIAL No. NOTIFICATION No.

BENCHMARK No.

GAS BOILER COMMISSIONING CHECKLIST

COLLECTIVE MARK

N/A

N/A

267

Please add the first 4 digits of the Boiler serial No to complete the BENCHMARK No.

SERVICE INTERVAL RECORD

It is recommended that your heating system is serviced regularly

and that you complete the appropriate Service Interval Record Below.

Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service

as described in the boiler manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing all controls

SERVICE 1

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 2

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 3

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 4

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 5

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 6

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 7

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 8

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 9

DA

TE

ENGINEER NAME

COMP

ANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 10

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

FERROLI TECHNICAL HELPLINE - 08707 282 885

Phone numbers:

Installer

Service Engineer

BECAUSE OF OUR CONSTANT ENDEAVOUR FOR IMPROVEMENT DETAILS
MAY VARY SLIGHTLY FROM THOSE QUOTED IN THESE INSTRUCTIONS.

ALL SPECIFICATIONS SUBJECT TO CHANGE

Please note - to avoid incurring unnecessary expense, in the event of a boiler shut down, check

this is not caused by lack of electricity supply, gas supply or low water pressure before calling our

Customer Service Helpline.

Lichfield Road, Branston Industrial Estate, Burton Upon Trent, Staffordshire DE14 3HD

Should you require any assistance during the installation

call our Technical Service Helpline on

0871 559 2927

Should you require a service engineer to visit

call our service centre on

0871 559 2924