ferroli Optimax 25 C User guide

Download

Page 1

OPTIMAX 25 C

wall-mounted gas ﬁ red, pre-mix condensing combination boiler

INSTRUCTIONS FOR USE INSTALLATION AND MAINTENANCE

G C N° 47-267-34

cod. 3544782/1 - 08/2004

Page 2

Optimax 25 C

IMPORTANT

Your “benchmark” Installation, Commissioning and Service Record Log Book will be enclosed in your customer information pack. “This record must be completed and left with the end user”.

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 efﬁ ciency. Please see installation and servicing guidelines.

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.

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

• By law the instruction manual 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 qualiﬁ ed 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 qualiﬁ ed personnel only.

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

• To guarantee efﬁ cient 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.

Page 3

Optimax 25 C

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

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

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

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

1.4 Adjustments ............................................................................................................6

1.5 Maintenance............................................................................................................7

1.6 Faults.......................................................................................................................7

1.7 Optional Time Clock ...............................................................................................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..............................................................................13

2.5 Electrical Connections ..........................................................................................13

2.6 Flue system ...........................................................................................................14

2.7 Condensate outlet connection .............................................................................20

2.8 Ferroli Optimax (optional) Time clock installation. ..............................................22

3. SERVICE AND MAINTENANCE............................................................23

3.1 Adjustments ..........................................................................................................23

3.2 System start-up.....................................................................................................24

3.3 Maintenance..........................................................................................................25

3.4 Troubleshooting ....................................................................................................27

4 TECHNICAL CHARACTERISTICS AND DATA.........................................29

4.1 Dimensions and connections ................................................................................29

4.2 General view and main components ....................................................................30

4.3 Hydraulic diagram.................................................................................................31

4.4 Technical data table ..............................................................................................32

4.5 Diagrams ...............................................................................................................33

4.6 Wiring diagram .....................................................................................................34

Page 4

Optimax 25 C

1. OPERATING INSTRUCTIONS

1.1 Introduction

Dear Customer, Thank you for choosing Optimax 25 C, a FERROLI wall-mounted boiler of the latest generation, featuring

advanced design and cutting-edge technology. Optimax 25 C is a high-efﬁ ciency 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 ﬂ ue gases, permitting extremely high efﬁ ciency. Above the heat exchanger, in the boiler, there is a pre-mix burner, with a large ceramic surface, equip-

ped with electronic ignition and ionization ﬂ ame 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, pump, expansion vessel, safety valve, ﬂ ow sensor, temperature sensors, a safety thermostat and a low pressure switch.

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 appliance temperature control. 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 conﬁ gure them. Any operating problems associated with the boiler or system is immediately signalled by the display and, if possible, corrected automatically.

Page 5

Optimax 25 C

1.2 Control panel

°C°C

ﬁ g. 1

23 41 5

1 - System temperature adjustment / Summer/Winter selection

This knob is used to adjust the system temperature from 20°C to 90°C and can switch over between summer / winter. To increase the system temperature, turn the knob clockwise; anticlockwise to decrease

it. To select the summer mode, turn it anticlockwise to the minimum setting. (See page 6)

2 - ON-OFF / Reset / Test

Holding the key down for at least 5 seconds turns off the boiler. To turn it back on, press the key again for 5 seconds.

Pressing the key resets boiler operation after a shutdown or lock-out. Pressing the key 3 times within 5 seconds automatically takes you to TEST operation, (15mins at maxi-

mum heating output) to exit test mode repeat the process by pressing the key a further 3 times within 5 seconds.

3 - Multi-function

In combination with the reset key, this is used to access the Installer menu.

4 - Operating display

On stand-by and during boiler operation this indicates the boiler operating temperature, (a ﬂ ame point at the bottom of the display will illuminate to indicate the burner has lit) or a fault code if a problem occurs.

5 - Hot water temperature adjustment control

Used to set the hot water temperature, turning the knob clockwise increases the temperature, anticlockwise decreases it. The adjustment range goes from 40 to 65°C (see page 6).

Page 6

Optimax 25 C

1.3 Turning ON and OFF

Ignition

• Open the gas cock on the boiler.

• Purge the air from the pipework upstream of the gas valve.

• Ensure the power is on to the appliance.

• Press the key to turn the appliance on (ﬁ g 1 item 2)

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

Turning off

Press the key for 5 seconds (see ﬁ g. 1). When the boiler is turned off with this key, the p.c.b is still powered, heating operation is disabled and

the display appears 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.

1.4 Adjustments

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).

Heating temperature setting

To set the system ﬂ ow temperature, use the C.H control knob (ref. 1 - ﬁ g. 1). It can be varied from a minimum of 20°C to a maximum of 90°C.

To set the central heating temperature, use the C.H control knob. Turning it clockwise increases the temperature, turning it anticlockwise decreases it.

When adjusting the control knob the display will ﬂ ash for 5 seconds and display the set point temperature. It will then revert to showing the actual temperature.

Domestic hot water temperature adjustment

To set the hot water temperature, use the D.H.W. control knob. Turning it clockwise increases the temperature, turning it anticlockwise decreases it. It can be varied from a minimum of 40°C to a maximum of 65°C.

When adjusting the control knob the display will ﬂ ash for 5 seconds and display the set point temperature. It will then revert to showing the actual temperature.

Page 7

Optimax 25 C

Summer/Winter selection

To select Summer/Winter, use knob 1 (ﬁ g. 1).

Turning it onto (Summer) turns off the heating function but the frost protection remains active. Turning it onto (Winter) turns on heating, via the room stat and programmer.

The boiler can still produce domestic hot water during summer mode whenever there is a demmand.

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.

1.6 Faults

In the unlikely event of an operating problem, or component failure, the display ﬂ ashes and a fault identiﬁ cation code appears.

Listed below are the faults that can be caused by simple, user-detectable problems. The boiler is equipped with an advanced self-diagnosis system. Should a fault occur with the boiler, the

display will show the fault code. There are some faults that in order to restore operation it requires you to press RESET (2 - ﬁ g. 1); if the boiler fails to start, it may be necessary to rectify the fault indicated by the operating LEDs (faults from 1 to 26); other faults cause temporary shutdown that are automatically reset as soon as the value comes back within the boiler’s normal working range (faults from 30 to 47).

Example

Fault CureDISPLAY

Make sure that the gas isolation valve up-stream of the boiler

Boiler failed to light

Insufficient system pressure

and on the meter are open. Press the RESET button

Fill the system to 1-1.5 bar by use of the filling loop.

(2 Fig. 1).

If the problem remains after two attempts at resetting, contact your nearest FERROLI Caresafe. For further fault codes, refer to section 3.4 “Troubleshooting”.

Before calling the FERROLI Caresafe centre, check that the problem is not due to an installation error or there being no gas or electricity.

Page 8

Optimax 25 C

1.7 Optional Time Clock

If a ferroli 24 hour time clock is ﬁ tted to the boiler this will control the central heating, the pre set times will only come into operation when both selector switches are moved to the “Auto” position.

AUTO

To set time of day

1. Slide switch (A) to left position

2. Using button + and - adjust until the correct time is shown on display (B).

Pre Set Programmes. The timer is pre programmed with 3 ON and 3 OFF times.

6:30 - 8:30

12:00 - 12:00

16:30 - 22:30

To Set Own ON and OFF times. Symbol in Display = ON time

1. Slide switch (A) to right position (P)

Display

2. Press button (P)

Display

OVER RIDE

RDP

If these are suitable no programming is required and the slide switch (A) can be moved to the Auto position and the central heating will be ON for these periods.

(12:00 - 12:00 will not

6:30

8:30

A Slide switch: set clock - auto - set programme B Display. Symbol in Display = Timer ON

P Select programme ON/OFF 1.....8

D Push buttons Time + Time E Over-ride: Boiler will switch ON if it is OFF; and OFF if it is ON F I=Heating continuous - AUTO=Heating timed - O=Heating disabled R Reset (with pencil) only with switch A in set clock position

switch on the boiler)

1.1 Use buttons + and - to set 1st ON time eg. 6:00

Display

2.1 Use buttons + and - to set OFF time, eg. 9:00

Display

6:00

9:00

3. Press button (P)

Display

4. Press button (P)

Display

5. Press button (P)

Display

6. Press button (P)

Display

7. The timer can be programmed with up to 8 ON and 8 OFF times by repeating the above procedure.

Over ride

By pressing the over ride button (E) the timer programme is over ridden ie, if programme is in OFF time it will come ON and if in ON time will go OFF.

The timer will revert back to it set programme on reaching the next ON or OFF time. When the programme is on over ride the sign

Reset Button By the use of a pencil the reset button can be pushed (R). This will clear all programmes apart from those factory pre set. Reset is only possible with switch (A) in set Clock position!

12:00

16:30

22:30

will be shown in the display window (B).

3.1 Use button + and - to set 2nd ON time, eg. 12:30

Display

4.1 Use button + and - to set 2nd OFF time eg. 14:00

Display

5.1 Use button + and - to set 3rd ON time, eg. 16:00

Display

6.1 Use button + and - to set 3rd OFF time eg. 23:30

Display

8. On completion of programming slide switch (A) to Auto position, the time of day will be displayed and the central heating will switch ON and OFF according to the programme set.

12:30

14:00

16:00

23:30

Page 9

Optimax 25 C

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 COMPEDENT 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

Page 10

2.2 Boiler location

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

The installation room must be sufﬁ ciently 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, ﬂ ammable materials or objects or corrosive gases. The room must be dry and not subject to freezing.

The boiler is design to be installed on a solid wall. The wall ﬁ xing must ensure a stable and effective support for the appliance, using the bracket and ﬁ xings supplied.

If the unit is enclosed in cupboard or mounted alongside, there must be space for normal maintenance work. Fig. 2 and tab. 1 give the minimum clearances to leave around the unit.

Optimax 25 C

A A

Table 1

Minimum

2,5 cm

20 cm

C 30 cm

60 cm

(via an openable panel)

ﬁ g. 2

Page 11

Optimax 25 C

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 and automatic bypass etc. The ﬂ ow and return must be a minimum diameter of 22mm for the ﬁ rst 3 meters from the appliance.

If the ﬂ ow and return pipes follow a path where air pockets could form in certain places, it is esential 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 ﬂ ow manifold and the return to the boiler should not exceed 20° C.

A minimum ﬂ ow of 6 litres/min is requied through the heat exchanger, it is therefore essential to ﬁ t a automatic bypass a min of 3 meters away from the appliance, calobrated on site.

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

Before installation, carefully ﬂ ush 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 ﬁ g. 5.

Key

1 System ﬂ ow (22 mm with isolation valve ﬁ tted) 2 DHW outlet (15 mm with isolation valve ﬁ tted) 3 Gas inlet (22 mm with isolation valve ﬁ tted) 4 Cold main inlet (15 mm with isolation valve ﬁ tted) 5 System return - 22 mm with isolation valve ﬁ tted (c/w ﬁ lter) 6 System drain 7 Condense outlet

1 2 3 5

40 68 107 77,5 57,5 50

7 4

400

ﬁ g. 5

It is essential to install the isolation valves supplied between the boiler and heating system, allowing the boiler to be isolated from the system if necessary.

The safety valve outlet must be connected to a 15mm diameter copper pipe, with a continual fall from the boiler to allow system water out onto the ground in the event of over-pressure in the heating circuit. If this is not done, and the drain valve trips and ﬂ oods the room, the boiler manufacturer is not to be held responsible. The outlet should face back against the outer brickwork or building face to prevent harm or injury from hot water discharging in the evet of an

over-pressuried system. Make the boiler connection in such a way that its internal pipes are free of stress. If a check valve is installed on the tap water circuit (where applicable), it is necessary to mount a safety valve between the boiler and this circuit (check valve minimum 3 meters from boiler).

Page 12

The isolation valve kit shown in Fig. 4 is supplied as standard.

Key

A = Nut B = Compression olive D = 3/4 seal (green) E = 1/2 seal (green) F = 1/2 gas seal (blue) G = Filter H = Cap

Flow isolation valve

RED

Hot water connection

Gas isolation valve

YELLOW

Cold water isolation valve

Optimax 25 C

BLUE

ﬁ g. 4

BLUE

Return isolation valve

Make Up Water

Provision must be made for replacing water lost from the sealed system. Reference should be made to BS6798, for methods of ﬁ lling 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. Ensure the ﬁ lling point is on the return pipe to the boiler.

Attention - is drawn to the Model Water Byelaws.

Key

1. C.H. ﬁ lling valve.

2. Temporary connection.

3. Cold water supply valve.

4. Double check valve.

Fig. 5

Page 13

Optimax 25 C

Water treatment

If treatment is used ferroli limited recommanded 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 Division Cookson Electronics, Forsyth Road Betz Dearborn LTD Sheerwater, Woking, surrey, GU21 5RZ Widnes, Cheshire WA8 8ND Tel: 0870 8700362 Tel: 0151 424 5351

Note - If the boiler is installed in 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 whitout 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 ﬁ tted in accordance with BS6891. Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for com-

mercial propane. Do not use pipes of a smaller size than the combination 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 ﬁ tted

on the boiler gas inlet. Please wait 10 minutes when ligthing from cold before checling 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, a combustion test should

should be carried out instead (see page 26 combustion analyser testing).

The isolation kit shown in Fig. 4 is supplied as standard.

2.5 Electrical Connections

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

Connection to the electrical grid

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

The unit’s electrical safety is only guaranteed when correctly connected to an efﬁ cient earthing

system executed according to current safety standards. Have the efﬁ ciency and suitability of the

earthing system checked by professionally qualiﬁ ed 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 speciﬁ ed 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 for connection to the electricity line. The connections to the supply must be made with a permanent connection and equipped with a double pole switch which contacts have a minimum opening of at least 3 mm, and fused at max. 3A between the boiler and the line. It is important to respect the polarities (LIVE: brown wire / NEUTRAL: blue wire / EARTH: yellowgreen wire) in making connections to the electrical supply.

Page 14

Optimax 25 C

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 qualiﬁ ed 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.

Acces to the electrical terminal board

Follow the instructions given in ﬁ g. 8 to access the electrical connection terminal board (ﬁ g. 8). The layout of the terminals for the various connections is given in the wiring diagram in the Tecnical Data chapter.

ﬁ g. 8

External controls

CAUTION: THE ROOM THERMOSTAT AND TIME CLOCK WORK AT 230 V - 50 Hz PHASE (ﬁ g. 9).

Remove if external controls fitted 230 Vac

ﬁ g. 9

2.6 Flue system

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

It should be noted that only Ferroli ﬂ ue system and accessories should be used on this appliance, as per BS 5440 2000 and C.E. test certiﬁ cation.

Page 15

Optimax 25 C

Connection with concentric ﬂ ue system

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

Standard concentric ﬂ ue installation

Standard 1KWMA53A Flue kit

Rear Outlet

Side view

50*110

View from above

175

125

* = between 10 e 60 mm

Install level

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

175

Side Outlet

215 185

View from above

Front view

50*

* = between 10 e 60 mm

Install level

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

185215

ﬁ g. 10a

Install level

110

S 50*

P = S + 160 mm

ﬁ g. 10b

215 185

DS50*

L = S + D + 170 mm

Install level

Horizontal ﬂ ue installation

1. Deﬁ ne the position for installing the unit.

2. If using standard ﬂ ue (1KWMA53A) this must be installed level, for non-standard ﬂ ue lenghts over

1mtr a fall of 3 mm per metre should be incorporated.

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 (ﬁ g. 10a and 10b). Remove the cutting burrs.

5. Connect the ﬂ ue to the boiler, positioning the seals correctly. Seal the ﬂ ue 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)

Page 16

Optimax 25 C

Vertical Outlet

The total length in equivalent metres of the concentric ﬂ ue 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 ﬂ ueing

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

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

2. Use the required amount of 1mtr ﬂ ue 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 ﬂ ue 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 ﬂ ue outlet (part number 1KWMA83U) in conjunction with a roof slate pitched (part number 1KWMA82U)or ﬂ at roof (part number 1KWMA81U) The storm collar must be ﬁ xed on using the three screws provided and sealed with an external grade silicone (not supplied).

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

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

Roof end piece

1KWMA83U

Angled roof tile

1KWMA82U

1KWMA56U

1000 125

950

max. 6 mt 60/100

max. 16 mt 80/125

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

Table 2a

Maximum permissible duct length (Horizontal)

Maximum permissible duct length (Vertical)

Table 2b

Reduction factors for bends

Ø mm

60/100

5 m 15 m

6 m 16 m

Ø mm

80/125

1 m

0,5 m

0,25 m

1KWMA71W

50 950

95050

215 185

ﬁ g. 10c

Page 17

Optimax 25 C

Connection with 80 mm pipe system

The unit can be connected to a system of separate air/ﬂ ue pipes for a wall or rooftop outlet as shown ﬁ g 11 - 12 . 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 ﬂ ue manual or the price list for additional components.

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

1. For each component, tables 4 - 5 provide an “equivalent loss in linear metres”, depending on the position of installation of the component (with air intake or ﬂ ue extraction, vertical or horizontal).

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

to the loss of one metre of ﬂ ue (deﬁ ned as equal to 1). For example, a bend at 90° of Ø80 in ﬂ ue extraction has an equivalent loss of 2.5 linear metres, i.e. it has a loss equal to that of 2.5 linear metres of ﬂ ue length.

2. After completely deﬁ ning the layout of the system of split ﬂ ues, add up the losses in equivalent metres, depending on the installation position, of all the components and accessories in the system.

ﬁ g. 11

KWMR54A

80 84 80

1KWMA84U

1KWMA82U

120

Ø80

FUMES

120

Ø80

AIR

Remove the closing cap

175

370

3. Check that the total calculated loss is less than or equal to 75 equivalent metres, i.e. the maximum permissible for this model of boiler.

For complete ﬂ ue options please contact ferroli or check our comprehensive ﬂ ue manual.

Table 3

Ref.

2 4 5

23 23

Description

Vertical air pipe Ø80

Vertical flue pipe Ø80

80 Ø vertical flue Kit

Total

Equivalent

23,0 m 36,8 m 12,0 m

71,8 m

loss

1KWMA83W

1KWMR54A

ﬁ g. 12

Page 18

Table of Ø80 ﬂ ue and accessory

Table 4 Table 5

Equivalent losses in

metres (linear)

Accessories Ø 80 Accessories Ø 80

Air Flue

Optimax 25 C

Equivalent losses in

metres (linear)

Air Flue

Description

Pipe Ø 80

male-female

KWMA83W • 1,00 m

Bend 45

° Ø 80 mm

male - female

Bend 90° Ø 80 mm

male - female

Terminal Position

KWMA65W

KWMA01W

Vertical

Horizontal

Vertical

Horizontal

111.62

1.2 1.8

1.5 2.0

Horozontial

flue terminal

Horozontial air terminal

Vertical flue

terminal

Description

KWMA86A

KWMA85A

KWMA84U

Vertical

Horizontal

Vertical

Horizontal

The stated loss values refer to genuine Ferroli ﬂ ue accessories.

D, E

ﬁ g. 13

Page 19

Optimax 25 C

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 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

From a terminal facing the terminal

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

300mm

75mm

200mm

150mm

100mm

300mm

600mm

1200mm

NOTE

N/A = Not applicable

In addition, the terminal should not be nearer than 150mm (fanned draugt) or 300mm (natural draugt) to an opening in the building fabric formed for the purpose of accommodating a built-in element such as a window frame.

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:

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

across a frequently used access route

towards a window or door

across a neighbouring property

1500mm

300mm

N/A

150mm

300mm

Page 20

Optimax 25 C

Connection to collective ﬂ ues or single ﬂ ues with natural draught

If you are then going to connect the Optimax 25 C boiler to a collective ﬂ ue or a single ﬂ ue with natural draught, the ﬂ ue must be expressly designed by professionally qualiﬁ ed technical personnel in conformity with the standards and rules in force.

In particular, ﬂ ues 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 ﬂ ue conveying the hot fumes adequately distanced or isolated from combustible materials

• Be connected to just one unit per ﬂ oor, 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

0,5 lt.

ﬁ g. 14

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.

Page 21

Optimax 25 C

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 ﬁ tted to the appliance with a ﬂ exible 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 subjet 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 lenth of 3 metres.

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

Internal

External

32/40mm Solvent pipework

Cement motar seal

25mm

100mm Dia tube

Lime stone chippings

Hole depth 400mm

Ground level (either/Or)

-300mm

2 Rows of 3x12 mm Holes

Bottom sealed

ﬁ g. 15

Page 22

Optimax 25 C

2.8 Ferroli Optimax (optional) Time clock installation.

- Remove outer case by removing four securing screws from the lower sides and lift off.

- Remove two screws securing fascia panel and swing the fascia panel down.

- Remove the four screws securing rear cover of the fascia and remove.

- Remove clock blanking plate from the panel.

- Mount clock into fascia panel using two screws provided.

- Take the black cable containing the blue and brown wires, cut off the molex connector and strip back the insulation by 4mm, connect the loose spades to clock terminals 1 & 2.

- Connect stripped end of the blue wire to terminal N of terminal block.

- Connect the stripped end of the brown wire to terminal L of terminal block.

- Remove the connector link from the 2 wires located behind the clock position.

- Connect these to terminal 3 and 5 of the clock.

- Replace fascia and outer case etc, in reverse order.

- Please refer to page 8 for the setting and use of the time clock.

Remove if external controls fitted 230 Vac

Existing wiring

Terminals for integral clock situated on circuit board compartment

Remove if external controls fitted 230 Vac

230 V

F2A

Wiring for integral clock and/or external controls

123456

6785

1234

230 V

456

123

X3 X6 X1 X7 X5X2

F2A

678910

12345

12 35

CLOCK

12 35

CLOCK

DSP49A1100 CPD5.1

Page 23

Optimax 25 C

3. SERVICE AND MAINTENANCE

3.1 Adjustments

All adjustment and conversion operations must be carried out by Qualiﬁ ed Personnel such as ferroli Technical Service.

FERROLI declines any responsibility for damage or physical injury caused by unqualiﬁ ed 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 airtight chamber. 3 Unscrew the gas coupling A on the air/gas mixer. 4 Replace the injector in the mixer with the one contained in the conversion kit. 5 Reﬁ t the coupling A and check the connection is gastight. 6 Apply the sticker, contained in the conversion kit, near the dataplate. 7 Fit the airtight chamber and casing back on. 8 Check working pressure. 9 Set CO2 mixture as detailed (page 26 combustion analyser testing).

ﬁ g. 16

Nozzle Ø

Natural gas LPG

See technical data table

Page 24

Optimax 25 C

3.2 System start-up

Commissioning must be performed by Qualiﬁ ed Personnel. Checks to be made at ﬁ rst 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 ﬂ uid to detect any leaks in connections.

• 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 ﬂ ammable liquids or materials in the immediate vicinity of the boiler.

• Vent and spin the pump.

• Ensure the ﬂ ue system is correctly ﬁ tted, 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 fused spur.

• Press the key on the boiler (see ﬁ g 1 item 2).

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

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 efﬁ ciency of the ﬂ ue and air-ﬂ ue 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 32

Turning off

Press the key for 5 seconds (see ﬁ g. 1.3 page 6).

Page 25

Optimax 25 C

3.3 Maintenance

The following operations are strictly reserved for Qualiﬁ ed Personnel, such as corgi registered engineers or Ferroli personeer.

Seasonal inspection of the boiler and ﬂ ue

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

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

• The ﬂ ue 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 ﬁ lled to 1 bar cold with zero system pressure.

• The gas ﬂ ow and pressure must correspond to that given in table 10 section 4.4 page 32.

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

• The returned ﬁ lter cleaned.

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

Page 26

Opening the casing

To open the boiler casing, you need to follow the sequence given below and the instructions of ﬁ g. 17.

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 ”

Optimax 25 C

ﬁ g. 17

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 ﬂ ue sampling points shown in ﬁ g.

18. To make the measurement, it is necessary to:

1) Open the ﬂ ue sampling point

2) Insert the probe;

3) Press RESET key for 3 times in

5 seconds to turn on TEST mode;

4) Wait 10 minutes for the boiler to stabilize

5) Take the measurement.

Air

Fumes

Air Fumes

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.

ﬁ g. 18

Page 27

Optimax 25 C

3.4 Troubleshooting

Fault Diagnosis

In the event of operating problems or trouble, the display will ﬂ ash and a fault identiﬁ cation code appears.

There are faults that in order to restore operation the RESET button must be pressed (ref.2 - ﬁ g. 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 ﬂ ashing and the fault code disappears.

Table 6

Fault Possible cause Cure

No burner ignition

flame detected with the burner off

100°C Safety thermostat trips • Flow sensor not active

Fan problem

• No gas

• Detection or ignition electrode fault

• Defective gas valve

• Incorrect inlet gas pressure

• Siphon obstructed

• Ionisation electrode defected

• Main board defected

or correctly located

• No system circulation

• Tachometer signal

interrupted, fan connection

• Fan damaged, debris in fan

• Check the regular gas flow to the boiler and the air has been purged from the pipes.

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

• Check and change the gas valve

• Check inlet gas pressure

• Check and if necessary change the siphon

• Check the ionizing electrode wiring

• Check the CVBC

• Check the correct positioning and operation of the flow sensor

• Check the pump and radiator valves present in the system

• Check the wiring and fan

• Check the fan, clean debris

F10

F22

No flame after the ignition phase

No communication between the CVBC and the

gas valve

Microprocessor trouble • Microprocessor operating

• CVBC fault

• Ionisation probe fault

• Mains interference

• Incorrect wiring

• Damaged valve

trouble

• Check and if necessary change

the CVBC

• Change/clean ionisation probe

• Check the earthing

• Check the wiring

• Check the CVBC

• Change the valve

• Cut off and restore the electricity

supply. If the trouble remains, check

and/or change the main PCB

Page 28

Fault Possible cause Cure

Optimax 25 C

F25

F26

F30

F31

F34

F35

Software fault • Software operating fault • Cut off and restore the electricity

supply. If the trouble remains,

check and/or change the CVBC

No flame after the ignition phase (5 times in 4 min.)

Flow sensor fault

Flow sensor fault • Sensor damaged or wiring

Supply voltage under 190V. or over 250V.

Irregular mains frequency • Electric mains trouble • Check the electrical system

• Detection electrode faut

• Flame instable

• Incorrect valve gas Offset

• Flue gas circuit obstructed

• Siphon obstructed

• Sensor damaged or short circuited

broken

• Electric mains trouble • Check the electrical system

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

• Check the burner

• Check Offset at the minimum power

• Check if flue gas circuit is free

• Check and if necessary change the siphon

• Check the wiring or change

the sensor

• Check the wiring or change

the sensor

F36

F37

F43

F44

F45

F46

Main PCB trouble

Incorrect system water pressure

Return sensor fault

Flue sensor fault

• Faulty CVBC

• Water on CVBC

• Pressure too low

• Sensor damaged

• Sensor damaged or wiring shorted

• Sensor damaged or wiring broken

• Sensor damaged or wiring shorted

• Sensor damaged or wiring broken

• Change the electronic CVBC

• Fill the system

• Check the sensor

• Check the wiring or change the sensor

Page 29

Optimax 25 C

4 TECHNICAL CHARACTERISTICS AND DATA

4.1 Dimensions and connections

Top view

120

175

400

11 11

378

120

370

Key

(c/w ﬁ lter)

6 System drain 7 Condense outlet

720

40 68 107 77,5 57,5 50

1 2 7 3 4 5

400

ﬁ g. 19

Bottom view

Page 30

4.2 General view and main components

Optimax 25 C

34 49

161

196

194

Flue sensor

201

82 188

186

Key

5 Combustion chamber 7 Gas inlet 8 Domestic hot water outlet 9 Cold water inlet 10 CH ﬂ ow 11 CH return 14 Safety valve 16 Premix fan 19 Combustion chamber 21 Gas injector 22 Ceramic burner 29 Flue outlet manifold 32 Ferroli pump 34 Heating ﬂ ow sensor 35 Air separator 36 Automatic air vent 44 Gas valve 49 Safety thermostat 56 8 ltr Expansion vessel 82 Ionisation probe

83 C.v.b.c unit 95 Diverting valve

136 Flow meter 154 Condensate outlet pipe 161 Heat exchanger 175 Transformer 186 Return sensor 188 Ignition electrode 194 DHW plate heat exchanger 196 Condensate collector 200 System drain off 201 Fan Venturi 246 Water pressure switch

175

10 7

246

154

136

200

ﬁ g. 20

Page 31

Optimax 25 C

4.3 Hydraulic diagram

34 49

201

161

186

194

Key

246

154

ﬁ g. 21

136

1110 7

7 Gas inlet 8 DHW outlett 9 Cold main inlet

10 CH ﬂ ow 11 CH return 14 Heating safety valve 16 Premix fan assembly 32 Heating pump 34 Flow temperature sensor 35 Air separator 36 Automatic air vent

44 Gas valve 49 Safety thermostat 56 Exspansion vessel 95 Motorised Diverting valve

136 Flow meter 154 Condensate outlet pipe 161 Heat exchanger 186 Return sensor 194 Domestic plate Heat exchanger 201 Fan Venturi 246 System pressure sensor

Page 32

4.4 Technical data table

Table 10

Powers

Hi Heating power

Hi DHW power

Useful Heating Power 80° C - 60° C Useful Heating Power 50° C - 30° C

Useful DHW Power Natural Gas delivery (G20) Heating

Natural Gas delivery (G20) DHW Natural Gas supply pressure (G20) LPG flow rate (G31) Heating

LPG flow rate (G31) DHW LPG supply pressure (G31)

Combustion

CO2 (G20 - Natural Gas) % Gas nozzle (G20 - Natural Gas) CO2 (G31 - Propane) % Gas nozzle (G31 - Propane) Flue temperature 80° C-60° C °C Flue temperature 50° C-30° C °C Flue flow rate kg/h Quantity of condensate kg/h pH of condensation water pH

Energy marking (92/42 EEC directive) NOx emission class

Heating

Heating temperature adjustment range °C Maximum working temperature in heating °C Maximum working pressure in heating bar Minimum working pressure in heating bar Expansion vessel capacity litres Expansion vessel pre-filling pressure bar Total boiler water content litres

Hot water

Hot tap water supply ∆t 25° C l/min

Hot tap water supply ∆t 30° C l/min Hot tap water supply ∆t 35° C l/min Tap water temperature adjustment range °C Maximum working pressure in hot water production bar Minimum working pressure in hot water production bar

Dimensions, weights connections

Height mm Width mm Depth mm Weight empty kg Gas system connection (with isolation valve fitted) mm Heating system connections (with isolation valve fitted) mm Hot water circuit connections (with isolation valve fitted) mm Maximum length of separate flues D=80*

(*Measurement given in equivalent linear metres – cfr FERROLI calculation system)

Electrical power supply

Max electrical power absorbed W Electric power drawn by the circulator (Speed I-II-III) W

Optimax 25 C

Pmax Pmin

kW 25,2 7,5

kW 30,0 7,5

kW 24,7 7,3 kW 26,4 8,0

kW 29,4 7,3

/h 2,67 0,79

/h 3,17 0,79

mbar 20 20

kg/h 1,96 0,58

kg/h

mbar 37 37

Pmax

2,35 0,58

Pmin

9,0

65 46 43

3,3

40-65-90

8,7

5,6

9,5

4,1

60 31 13

1,4

4,1

20 - 90

0.8 8 1

1,7

16,9

14,0 12,0

40 - 65

0.25

720 400 358

46 Ø22 Ø22 Ø15

140

Page 33

Optimax 25 C

4.5 Diagrams

Head available for the system

H [m H

0 500 1.000 1.500 2.000

ﬁ g. 22

Key

Q [l/h]

1 - 2 - 3 = Pump selector positions (In order to obtain maximum hot water output the pump must be left in position 3).

A =Boiler losses of head

Page 34

4.6 Wiring diagram

Key

16 Fan 32 Ferroli pump 34 C.h. ﬂ ow temperature sensor 44 Combination gas valve 49 Overheat cut-off thermostat 81 Spark electrode 82 Ionisation electrode 95 Diverting valve

114 Water pressure switch 136 Flowmeter 186 Return sensor 191 Flue temperature sensor

Optimax 25 C

S4965V1018 DC F02.1

136

12V

GND

OUT

186

191

510

X12

816

715

614

513

412

311

210

X11

Remove if external controls fitted 230 Vac

230 V

114

456

123

X3 X6 X1 X7 X5X2

678910

12345

DSP49A1100 CPD5.1

123456

6785

1234

TACHO

GND

PWM

24V

24 V.

F2A

12 35

CLOCK

ﬁ g. 23

Page 35

Page 36

Should you require help during installation

call our Technical Helpline on

08707 282 885 option 1

To book a Ferroli service engineer

call Ferroli caresafe on

08707 282 885 option 2

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.

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

Tel. 08707 282 885 - Fax 08707 282 886