FEB-20E UK ECOPLUS USER INSTRUCTIONS AND TECHNICAL INSTRUCTIONS

CONTENTS

Section 9 USERS INSTRUCTIONS GENERAL SPECIFICATIONS TECHNICAL DATA GENERAL INSTALLATION REQUIREMENTS INSTALLATION INSTRUCTIONS COMMISSIONING INSTRUCTIONS ROUTINE SERVING INSTRUCTIONS WIRING DIAGRAMS FAULT FINDING Page 22

1.- USERS INSTRUCTIONS

1.1.- GAS SAFETY (INSTALLATION AND USE) REGULATIONS 1996 (AS AMENDED)
It is the law that all gas appliances are installed by a registered person, in accordance with the above regulations. Failure to install appliances correctly could lead to prosecution. It is in your own interest, and that of safety, to ensure that the law is complied with. WARNING: It is essential that the appliance is correctly earthed. An electricity supply of 230 V 50 Hz is required, fused at 3 Amp. Read these instructions carefully before attempting to operate the appliance. Comply with all applicable warnings. Do not interfere with any sealed components, and use the appliance only in accordance with these instructions.

1.2.- INTRODUCTION

The Fagor FEB-20E is a wall hung, room sealed, fan assisted, microprocessor controlled, fully modulating gas combination boiler for providing both central heating and domestic hot water. The maximum heat output in either heating or hot water mode is 23.7kW and priority is always given to the supply of hot water.
1.3.- PRELIMINARY WARNINGS
Check all of the gas pipe joints and make sure that gas reaches the boiler (with the gas cock turned on) Make sure that the central heating circuit is completely full and vented. The pressure gauge should indicate a pressure of between 0.75 and 1 bar with domestic cold water in the central heating circuit. Make sure that the boiler is connected to the correct electricity voltage. Make sure that the air intake and the combustion products outlet are not blocked.

CONTROL PANEL.

1.- Programmable timer 2.- Heating temperature and pressure gauge 3.- Central heating temperature selector
4.- Main control switch 5.- D.H.W. temperature selector 6.- Green neon light (boiler ready) 7.- Orange neon light (burner functioning) 8.- Red neon light (boiler locked out)

FEB -20E

1.4.- DOMESTIC HOT WATER SERVICE
To turn on the boiler turn the main control switch to the summer setting. The boiler is then ready to supply D.H.W. on demand. Whenever you turn on any hot tap the boiler automatically turns on by firing up the burner. By means of the D.H.W. temperature selector knob, any water temperature of between 35 and 60C may be selected.

Position:

1.5.- HOT WATER AND CENTRAL
HEATING SERVICE Turn the main control switch to the winter setting. The burner will automatically fire up. By means of the central heating temperature selector control knob,any water temperature of between 60 and 85C may be selected. The boiler will remain on until the temperature selected on the room thermostat or on the boiler itself is reached. Whenever there is a demand for D.H.W. from the central heating setting, the boiler is ready to supply it giving priority to the D.H.W, with the central heating on standby until the D.H.W. demand cease GENERAL GUIDANCE NOTES ON HOT WATER DELIVERY This boiler has a temperature modulation system to control the hot water delivery temperature. However there are certain circumstances which can cheat the system causing a wide variation of temperature at the outlet. These notes are designed to help the user obtain the best possible performance from the boiler and avoid situations which could result in unsatisfactory performance. The boiler can theoretically supply more than one outlet simultaneously However in practice the tap which is nearest will receive the most hot water. If the shower is in use and a kitchen tap is opened virtually all the hot water will be diverted to the kitchen as it offers the least resistance. If an outlet is too restrictive it will slow down the flow rate and increase the temperature. For example the shower - ensure the head is free from blockages caused by scale. Due to the restrictive nature of simple mixer showers it is wise to turn the temperature selector down on the boiler before using the shower. If a tap or shower head is too restrictive due to a fault or blockage, the flow rate will be reduced to below the rate at which the boiler is able to modulate resulting in a wide swing in temperatures. Either fix the restriction or turn the temperature selector on the boiler down. Caution: The boiler can produce water at over 80C when in central heating mode. If you run a hot tap when the boiler has been heating the radiators, the initial flow through the hot tap could be very hot. DO NOT PLACE YOUR HANDS under the tap or use the shower until this initial flow has passed. Allow time (30 seconds) for the temperature to stabilise after making an adjustment at the tap before making further adjustments.

2.- GENERAL SPECIFICATIONS
The Fagor FEB-20E is a wall hung, room sealed, fan assisted, microprocessor controlled fully modulating gas combination boiler for providing both central heating and domestic hot water. It is particularly suitable for Caravan Holiday Home and Park Home use. Maximum heat output in either heating or hot water mode is 23.7.kW (80.840 Btu/h), and priority is always given to the supply of hot water. The appliance is supplied with a standard concentric air/flue duct and wall terminal, however additional elbows, extension kits, vertical flue kit, or twin pipe flue kits are available as optional extras. The appliance is intended for use with sealed central heating systems and is supplied for use with propane gas.
The appliance is supplied fully assembled and includes the following principle components: Burner with stainless steel flamestrips. Copper heat exchanger. Induced draught fan for the extraction of combustion products and induction of combustion air. Modulating gas valve with double safety valves Circulation pump with manual anti-seizure device and speed selector. Central heating expansion vessel. Differential air pressure switch - only allows the boiler to ignite if there is a sufficient supply of air reaching the burner for satisfactory combustion performance, switching off the boiler in the event of fan failure or obstruction in either the air inlet or flue products outlet ducts. Thermistors (NTC) - There are two thermistors fitted for automatic control of the domestic hot water and the central heating flow temperature. Safety thermostat for protecting the boiler against any possible overheating by switching off the electricity supply which in turn cuts off the gas supply. It is reset manually. Electronic controls, incorporating the following features: Temperature selection for central heating from between 60 to 85C. Temperature selection for domestic hot water from between 35 to 60C. Continuous modulation of the gas valve. Flame control by ionisation Ignition control Anti-frost control in the central heating circuit. Anti - seizure of the pump.
Principal components 1. Back Plate 2. Automatic Air Vent 3. Air pressure switch 4. Heating Thermistor 5. High limit stat 6. Ionisation electrode 7. Main Burner 8. Circulation Pump 9. Flow switch
10. Pressure relief valve 11. Fan 12. Heat Exchanger 13. Combustion Chamber 14. Expansion Vessel 15. Ignition electrode 16. Domestic Hot Water Thermistor 17. Gas Valve 18. Electronics Box

Schematic diagram- Hydraulic circuit 1.- Heat exchanger 2.- Ignition Electrode 3.- Detection electrode 5.- Burner 6.- Injector Manifold 7.- D.H.W Thermistor 8.- Burner pressure nipple 9.- Gas valve 10.- Inlet pressure nipple 11.- Gas inlet 13. D.H.W outlet 14.- Heating flow 16.- Flow switch 17.- Water filter 18.- Cold water inlet 19.- By-pass 20.- Heating return 21.- Pressure relief valve 22.- Circulation pump 23.- High limit thermostat 24.- Expansion vessel air valve
25.- Expansion vessel 26.- Heating Thermistor 27.- Automatic air vent 29.- Air pressure switch 30.- Fan 31.- Sealed air box
APPLIANCE Dimensions and connection details

440 = = 100 60

1. 1/2 BPS Gas inlet 2. 1/2 BPS D.H.W. outlet
3. 3/4 BPS Central heating flow
4. 1/2 BPS Domestic cold water inlet
5. 3/4 BPS Central heating return 6. Pressure relief valve outlet

3.- TECHNICAL DATA

Model Category Type Maximum Output Minimum Output Maximum Output Minimum Output Qn max. Qn min. kW kcal/h kW kcal/h kW kcal/h kW kcal/h kW kW
Central Heating (C.H) Output
Domestic Hot Water (D.H.W.) Output
Central Heating Nominal Heat Input (Hi) and D.H.W. Nominal Heat input (Hi) D.H.W. Flow Rate at 25 C Temp Rise (l/min) D.H.W. Nominal Flow (l/min)
FEB-20E II2H3P C12,C32,C42,C52 23,8 20.468 9,3 8.000 23,8 20.468 9,3 8.10,3 13,10 0,60-85 35-37 2,75 2,04 220-230~50Hz 135 38
Minimum Flow Rate Required to Activate D.H.W. Mode (l/min) Maximum C.H. Operating Pressure (bar) Maximum D.H.W. Minimum D.H.W. Expansion Vessel Capacity (l) Central Heating Temperature Selection Range (C) D.H.W. Circuit Natural Gas Pressure (mbar) Propane Gas Consumption Electrical Supply (V/Hz) Power Consumption (W) Dimensions (mm) Height Width Depth Gas Inlet Cold Water Inlet Hot Water Outlet C.H. Flow C.H. Return Natural (m /h) Propane (kg/h)

Connections

Flue Gas Exit Temp (C) Net Weight (kg)
4.- GENERAL INSTALLATION REQUIREMENTS
4.1 STATUTORY REQUIREMENTS
GAS SAFETY (INSTALLATION AND USE) REGULATIONS 1998 (As amended). It is the law that all gas appliances must be installed by a registered person, in accordance with the above regulations. Failure to install appliances correctly could lead to prosecution. It is in your own interest, and that of safety, to ensure that the law is complied with. In addition to the above regulations, this appliance must be installed in accordance with the current IEE Wiring regulations (BS 7671), Heath and Safety Document No 635 The Electricity at Work Regulations 1989. It should also be in accordance with the relevant recommendations in the current editions of the following British Standards and Codes of Practice: BS 5482 part 2 Installations in caravans and non permanent dwellings BSEN721 Leisure accommodation vehicles safety ventilation requirements. IMPORTANT: Manufactures instructions must NOT be taken in any way as over-riding statutory obligations.

4.2 BOILER LOCATION

In positioning the boiler, the following limitations MUST be observed: The position MUST allow for a suitable flue termination to be made. The combination boiler must be installed on a flat vertical wall which is capable of supporting the weight of the appliance, and any ancillary equipment. - If the appliance is installed in a room containing a bath or shower, any electrical switch or control utilising mains electricity must be so situated that it cannot be touched by a person using the bath or shower. Attention is drawn to the requirements of the current I.E.E. Wiring. Regulations (BS 7671), and in Scotland the electrical provisions of the Building Regulations applicable in Scotland. - A compartment used to enclose the appliance MUST be designed and constructed specifically for the purpose. An existing cupboard, or compartment, may be used provided it is modified accordingly.
- Ventilation requirements as stated in this manual must be observed. - Minimum clearance as stated in the technical data must be observed.
4.3 FLUE TERMINAL POSITION
- The boiler MUST be installed so that the terminal is exposed to the external air. - It is important that the position of the terminal allows free passage of air across it at all times. - It is ESSENTIAL TO ENSURE, in practice that products of combustion discharging from the terminal cannot re-enter the building, or any other adjacent building, through ventilators, windows, doors, other sources of natural air infiltration, or forced ventilation/air conditioning. - The minimum acceptable dimensions from the terminal to obstructions and ventilation openings are stated in the table below. - Where the lowest part of the terminal is fitted less that 2M (78 in) above ground, above a balcony or above a flat roof to which people have access, the terminal MUST be protected by a purpose designed guard. - In certain weather conditions the terminal may emit a plume of steam. This is normal but positions where this would cause a nuisance should be avoided. - After a period of use the terminal may become discoloured, this is normal.
Minimum dimensions of flue terminal positions Terminal position Directly below an opening fixed vent windows, etc. Adjacent to an opening fixed vent windows, etc. Below gutters. Below eaves From a vertical drain pipe or soil pipe From an internal or external corner Vertically from a terminal on the same wall Horizontally from a terminal on the same wall Minimum clearances 300mm 300mm 75mm 200mm 75mm 300mm 1500mm 300mm
4.4 VENTILATION REQUIREMENTS
The following notes are for general guidance: - It is not necessary to have a purpose provided air vent in the room or internal space in which the appliance is installed. - If the boiler is to be built into a small cupboard or compartment (i.e. at minimum clearances)and overheating can be forseen (i.e. close proximity to a cooking appliance etc) permanent air vents are recommended for cooling purposes in the cupboard or compartment. The following table gives the minimum effective areas of the vents. Position of air vent HIGH LEVEL LOW LEVEL Air from room/int space. 13000 mm 7500 mm Air direct from outside. 13000 mm 7500 mm

4.5 ELECTRICITY SUPPLY

The appliance MUST be earthed. A mains supply of 230 V ~ 50 Hz single phase is required. Wiring external to the boiler MUST be in accordance with current I.E.E. Wiring Regulations (BS 7671) and any other relevant local regulations. The supply connection to the flying lead provided MUST be made to a fused double pole switch having a 3 mm (1/8 in ) contact separation in both poles, serving only the boiler and system controls, is a fused plug and socket or fused spur. The external fuse rating should be 3A. This connection should be readily accessible and be made adjacent to the boiler

4.6 GAS SUPPLY

- A Propane gas supply at 37m bar is required. - Ensure the regulator is of sufficient capacity to carry the maximum boiler input plus the demand for any other installed appliances. - Ensure the connection between the supply/bottle and the caravan holiday home or park home is designed so that no pressure drop occurs. - No more that 3 m of 15mm pipe should be used. Where the supply exceeds 3 m the pipe should be suitably sized only reducing to 15mm before the boiler - A full bore isolation cock must be fitted in the supply close to the boiler. - The complete installation must be tested for gas soundness.
4.7 WATER SYSTEMS - GENERAL
- This appliance is designed for connection to sealed central heating water systems. - Prior to filling the central heating system (see section 6.2) It is recommended that where the system is installed in a caravan holiday home, subject to non - continuous use, anti-freeze is used. AVAILABLE PUMP HEAD
4.8 REQUIREMENTS FOR SEALED WATER SYSTEMS
The heating system design should be based on the following information: - The available pump head is given below. - A minimum flow rate corresponding to a heating differential of 20C must be obtained at all times.

Flow (l/h)

800 By-pass closed By-pass open
- A heating by-pass should be fitted to ensure that the above condition is satisfied. If thermostatic radiator valves are to be installed, at least one radiator should be without a thermostatic valve (usually the bathroom radiator). - A sealed system must only be filled by a competent person using the approved method shown. - The following paragraphs outline the specifications of the items fitted to the boiler.

Expansion vessel.

The following table gives the maximum system volume that the integral 7 l expansion vessel can sustain under different temperature conditions. If the system volume exceeds that shown, an additional expansion vessel must be fitted and connected to the heating system primary return pipe as close as possible to the appliance. If an extra vessel is required, ensure that the total capacity of both vessels is adequate. If the pressure gauge indicates 2.65 bar or greater when the appliance is at maximum temperature with all radiators in circulation an extra expansion vessel is required.
2,0 1,8 1,6 1,4 1,250 C 85 C 75 C 60 C
P Cold pressure (bar) C System capacity (litres)

Pressure relief valve

A pressure relief valve set 3 bar (43.5psi) is fitted and a discharge pipe is routed to the outside of the appliance. This discharge pipe should be extended to terminate safely away from the appliance to a point where a discharge would not cause damage to persons or property but would be detected. The pipe should be able to withstand boiling water, be a minimum of 15mm in diameter, and not include any upward pipe runs or horizontal runs prone to freezing.

4.9 D.H.W. SYSTEMS

- Check that mains supply pressure is within the prescribed limits (refer to technical data page 7) If necessary, a pressure reducing valve should be fitted to the mains supply before D.H.W. inlet connection. - The DHW performance is summarised in the graph: - The final 600 mm (24 in) of the mains supply pipe to the boiler must be copper. - If the appliance is installed in an area where the temporary hardness of the water supply is high, say over 150 ppm, the fitting of an in line scale inhibitor may be an advantage. - Devices capable of preventing the flow of expansion water: e.g. non return valves and/or loose jumpered stop cocks should not be fitted unless separate arrangements are made for expansion water.

D H W Performance graph

35 C 6.7 l/min C 10 l/min C 10 l/min 60 C 3 l/min 60 C 7.6 l/min
FLOW D.H.W. (l/min) COLD WATER INLET TEMPERATURE =15C
- If a non-return valve is fitted in the incoming water supply - e.g. in line with scale inhibitor then a D.H.W. expansion vessel MUST be obtained and fitted. - For specific information relating to fittings (eg. Shower, washing machines etc.) suitable for connection in the D.H.W. circuit, consult the Local Water Undertaking, however the following information is given for guidance. Domestic hot/cold water supply taps and mixing taps - All equipment designed for use at mains water pressure is suitable. Showers - Any mains pressure shower is suitable, but if the unit has a loose head which may become immersed in bath water either an anti-syphonage device must be fitted, or the length of the flexible hose must be reduced so that it cannot fall closer than 13 mm (1/2 in) to the top of the bat

5.- INSTALLATION INSTRUCTIONS

5.1 BOILER PACKAGING

The boilers are supplied in different packagings: - Boiler - 1m flue system (separate packaging)

5.2 FITTING THE BOILER.

- Decide where the boiler is to be fixed on the wall taking into account the installation requirements detailed in section 4.2 and the clearances and dimensions described in the technical data. The centres for the hanging strap fixing are 85mm below the top of the boiler casing, see fig below. The flue pipe centre is 213mm above the hanging strap centres. NOTE: a fall of about 6mm should be allowed on the flue pipe to stop water ingress.

fig.3 fig.4

440 450
fig.5 A screw fixing should be made on the bottom rail of the boiler to secure it during transport. Use the paper template to mark out the positions of the fixing holes and pipe connections. - Drill the wall and screw the wall bracket to the wall with three screws supplied, taking into account the clearances and dimensions which are show in figures 1, 3, and 4. - Fix the pre-plumbing jig in position. - The pre-plumbing jig enables the system pipework to be completed and commissioned before the boiler is fitted to the wall. This work should now be completed.

5.3 WIRING INSTRUCTIONS

Warning: observe the usual precautions to ensure that the electricity supply is isolated before commencing any installation or service work. - The appliance is fitted with a flying lead for 230 V ~ 50 Hz. This should be wired as described in section 4.5 electricity supply. Note: The ignition and flame control by ionisation circuit is polarised. For this reason, it important that live and neutral are not reversed. (If upon commissioning the boiler the burner lights but no flame is detected it is likely that the polarity is incorrect).
WARNING: THIS APPLIANCE MUST BE EARTHED.

ROOM THERMOSTAT:

It is recommended that for optimum operating efficiency, this appliance should be used in conjunction with an external room thermostat. The voltage between the contacts of the room thermostat is 24V (normally closed). Any 24V controls may be used, but gold contacts are recommended. DO NOT under any circumstances use a mains supply to the stat as you will blow the P.C.B. in the boiler. Only voltage free switching stats should be used. The terminal block for the room stat connections can be found by pulling off the front cover to reveal the block at the bottom right hand side. Remove the bridge to wire in the stat.

FEB-20E

The room thermostat must be installed on a wall which is free from any objects and free from direct contact with either sunlight or draughts.
5.4 WATER AND GAS CONNECTION
Connect the boiler up in such a way as to leave the connecting pipes self supporting and free from any stress. Check that the gas pipe complies with the requirements of section 4.6 In order for the boiler to function correctly and to have a long working life, the hydraulic installation must be well designed, and it is necessary that the temperature difference between the flow and the return should not be greater then 20C.

5.5 AIR/FLUE SYSTEM

The FEB20E boiler comes supplied with a 60 - 100mm coaxial air/flue kit. The maximum length of the combustion and intake pipes which may be used with the FEB20E boiler is three meters, measured from the 90 bend. Each extra 90 bend or two 45 bends, reduces the available length by 0.8m. (See installation examples). It is recommendable to fit the pipe at a slight 2 or 3 downwards incline to prevent any water or condensation from entering in the boiler. Where a short run of less than 1 m is used, such as in a caravan holiday home, the air restrictor ring must be inserted into the boiler flue spigot before fitting the elbow.
HORIZONTAL FLUE 60-100mm COAXIAL
Seal Rubber sleeve Clamp Air restrictor ring
6.- COMMISSIONING INSTRUCTIONS
Before commissioning the appliance, the whole gas installation including the meter MUST be purged and tested for gas soundness. IMPORTANT: open all doors and windows, extinguish naked lights, and DO NOT SMOKE whilst purging the gas line. Before commencing the commissioning procedure, ensure that the central heating system and the domestic hot and cold water system have been flushed. This will remove contamination which could cause the boiler to fail.

6.1 DOMESTIC HOT WATER

Turn on the DHW isolation valve. Fill and vent the installation by turning on the various hot water taps in the installation Make sure that there are no leaks in the installation
6.2 CENTRAL HEATING CIRCUIT
In order for the boiler to function correctly, the pressure in the central heating circuit must be between 0.75 and 1 bar when cold. Both the boiler and the central heating installation must be purged of any air in the water pipes which may cause noise and the incorrect functioning of the system. The boiler is fitted with an automatic air vent. Check that the cap, found on the top left surface of the boiler, is loose. In order to fill the installation correctly the following sequence must be followed: - Turn on the radiator air vents. - Fill the central heating circuit using the approved method given in section 4.8 - Turn off each of the air vents as water starts to appear from them. - Turn off the filling tap when the pressure gauge exceeds 1 bar. - Turn the main control switch to the winter setting, making sure that the pump runs. Do not allow the pump to run when dry. - Vent the central heating circuit once more. Then let the pressure in the circuit settle at 1 bar. - Make sure that there are no leaks in the installation. VERY IMPORTANT: Never turn on the boiler before the system is filled. Allowing the pump to run dry will cause serious damage.

6.3 GAS CIRCUIT

Purge the gas circuit as described above. Turn on the gas cock to the installation and check that there are no leaks using leak detection fluid

6.4 SETTINGS

Before leaving the factory the boiler is pre-set in accordance with the information on the data plate, and therefore needs no further adjustment.

6.5 INITIAL OPERATION

1.- Programmable timer 2.- Heating temperature and pressure gauge 3.- Central heating temperature selector 4.- Main control switch 5.- D.H.W. temperature selector 6.- Green neon light (boiler ready) 7.- Orange neon light (burner functioning) 8.- Red neon light (boiler locked out)
6.5.1 Preliminary warnings
- Checking all of the gas pipe joints and make sure that gas reaches the boiler (with the gas cock turned on) - Make sure that the central heating circuit is completely full and vented. The pressure gauge should indicate a pressure of between 0.75 and 1 bar. - Make sure that the boiler is connected to the correct electricity supply. - Make sure that the air intake and the flue outlet is not blocked.
6.5.2 Domestic hot water service
To turn on the boiler turn the main control switch to the summer setting. The boiler is then ready to supply D.H.W. on demand. Whenever you turn on any hot tap the boiler fires up automatically. By means of the D.H.W. temperature selector control knob, any water temperature of between 35 and 60C may be selected.
6.5.3 Hot water and central heating service
Set the time clock to position 1 (uppermost) and the room stat (if fitted) to max temp. Then turn the main control switch to the winter setting. The burner will fire up. By means of the central heating temperature selector control knob, any water temperature of between 60 and 85C may be selected. The boiler will remain on until the temperature selected on the room thermostat or on the boiler itself is reached. Whenever there is a demand for D.H.W. on the central heating setting, the boiler is ready to supply it giving priority to the D.H.W. with the central heating on standby until the D.H.W. demand ceases.
6.5.4 Turning the boiler off
- Turn the main control switch to the O setting. - Turn off the gas supply to the boiler.
6.5.5 Appliance safety lock-out
This boiler has a cut-out indicator built in to it. Whenever a malfunction is detected, the boiler switches off automatically and the indicator lights up (red pilot light). To restart the boiler press the restart button. The red indicator should go out. If there is air in the system or the boiler is fired before filling the system fully, the high limit stat will trip. If this occurs there will be no lights illuminated.The stat will reset itself but will take a minute or so and pressing the reset button will not restart the boiler until the stat has cooled. IMPORTANT: Whenever the boiler has been left idle for any length of time, or when a new gas bottle is installed (propane models), the appliance may switch off due to the presence of air in the pipes. In cases such as these, the reset button may need to be pressed several times until all the air is expelled.

6.6 FINAL CHECKS

- Re-light and test for gas soundness - Set the C.H. and D.H.W. temperature selectors to the required settings. - Ensure that the time clock and/or room stat (if fitted) are set to the required setting (s).

6.7 USERS INSTRUCTIONS

Upon completion of testing the system, the installer should: - Give the users Instructions to the owner and emphasise their responsibilities under the Gas Safety (Installation and Use) Regulations 1998 - Explain and demonstrate the lighting and shut down procedures. - Advise the owner on the efficient use of the system, including the use and adjustment of all system controls for both D.H.W. and C.H. - Advise the user of the precautions necessary to prevent damage to the system, and to the building, in the event of the system remaining inoperative during frost conditions. - Explain the function of the boiler lock-out devices, and how to reset it. Emphasise that if cut - out persists, the boiler should be turned off and the installer or service engineer consulted. - Stress the importance of an annual service by a Corgi registered heating engineer.
7.- ROUTINE SERVICING INSTRUCTIONS
To ensure continued efficient operation of the appliance, it is recommended that it is checked and serviced as necessary at regular intervals. The frequency of servicing will depend upon the particular installation conditions and usage but in general once a year should be adequate. It is the law that any service work must be carried out by registered personnel (C.O.R.G.I.). Before commencing any service operation, ISOLATE the mains electric supply, and TURN OFF the gas supply at the main service cock. Service the appliance by following the full procedure detailed below. MINIMUM CLEARANCE REQUIRED FOR SERVICING AND REPLACEMENT OF PARTS * Distance at the side The minimum distance necessary for carrying out maintenance operations, is 5 mm * Distance at the top The minimum distance necessary for carrying out maintenance operations, is 200mm * Distance at the bottom The minimum distance necessary for carrying out maintenance operations, is 250 mm. * Distance at the front The minimum distance necessary for access during maintenance operations, is 250mm, although this distance may be reduced to 5 mm, as long as a door is installed which can be removed when it comes to carrying out maintenance work.

7.1 FRONT COVER REMOVAL

The cover is held in place by four spring clips and can be removed by grasping it at the top and pulling forward sharply to release. Further access can be gained by removing the control panel. (Four screws), and the side panels. The side panels are retained on key hole slots and need to be pushed up before being pulled forward.

7.2 BURNER AND HEAT EXCHANGER INSPECTION AND CLEANING
The front of the sealed air box must first be removed (6 screws) and care should be taken to avoid damaging the seal. The combustion chamber cover can then be removed (4 screws) taking care not to damage the delicate insulation material inside. Inspect the burner and heat exchanger fins for debris and soot. Check also for rubbish below the burner.
7.3 IGNITION AND DETECTION ELECTRODES
With the combustion chamber cover removed check the condition of the electrodes for any sign of wear or damage.

7.4 WATER CIRCUIT CHECKS

Inspect the pipe work inside the boiler for leaks. Check that the pressure in the system is correct (1bar). Check the operation of the relief valve by turning turn and check it closes without further leakage. Check the correct operation of the gauge. The pressure should increase slightly as the temperature rises. Finally check the filter which is situated in the cold water inlet pipe.

7.5 BURNER PRESSURE

5 This is factory set, but should you suspect a problem proceed as follows: There are two nipples on the gas valve, an inlet pressure nipple situated at the lower end marked in and a burner pressure pressure nipple at the top marked out. The pressure at the inlet should be 37mbar for propane, less no more than 2.5mbar pressure drop when the boiler is working in DHW mode.
The burner pressure nipple should give a reading of 14.6 mbar when the boiler is at full power on D.H.W. mode. Remove the main cable plug to the gas valve to get a minimum burner pressure reading which should be 2.9 mbar.

7.6 FINAL CHECKS

Turn all the controls to their max position so that the appliance begins to function. Check for gas leaks using a suitable detector. Check the boiler functions correctly in both central heating and domestic hot water modes. The orange indicator should light up when the boiler is firing in either mode. For more detailed servicing information, troubleshooting flow diagrams, self diagnostic codes, technical advice, spare parts etc, phone Morco on 01482 325456. Our qualified corgi registered personnel are ready to help and advise you.

8.- WIRING DIAGRAMS

J11 J8

J12 J9

1. Filter 2. Supply 3. Earth 4. Fan 5. Pump 6. Ignition 7. Burner solenoid valve 1 8. Burner solenoid valve 2 10. Flow switch 11. Air pressure switch 12. Room thermostat (optional) 13. Terminal block (Room thermostat) 14. Clock connection 15. Modulating Electro-valve
16. Ionisation electrode 17. High limit stat 19. D.H.W variable resistance 20. Heating variable resistance 21. D.H.W Thermistor 22. Heating Thermistor 24. Reset button 25. Burner on led 26. Lock out indicator led 27. Power on indicator light 28.Winter / summer switch 29. On/Off switch 30. Clock
SELF DIAGNOSTIC FAULT CODES

The FEB-20E has a built in self diagnostic fault finding system incorporated into the P.C.B. Should a fault develop on the boiler which could cause a situation liable for the operation of the boiler to become unsafe, then the boiler will fail safe by locking-out which is displayed via the 'red neon' on the control panel. The fault can be identified by the different sequences in which the 'red neon' flashes and the duration that the neon stays illuminated. The electronic fail safe is also backed by a mechanical means of protection, should the electronics fail to detect a fault. These mechanical forms of protection will protect and ensure the safe shut down of the boiler.
The software protection built into the P.C.B. will run a system check on components which are essential to the safe operation of the boiler. This occurs before any ignition sequence takes place. If any component is found to be faulty or out of a predetermined range, then lock-out will be displayed.
Each fault code begins and finishes with the 'red neon' illuminated for 5 seconds, the relevant fault is then indicated by the number of 1 second flashes which occur between the initial 5 second flash and the closing 5 second flash. These range from 0 - 12. Please be patient when counting the sequence as the correct identification of the fault will save time on isolating and rectifying the problem. Eg: Fault 6 water overheating would display the following sequence of the red neon;
5 seconds 1 sec 1 sec 1 sec 1 sec 1 sec 1 sec 5 seconds
N.B. The sequence repeats until either the reset button is depressed or the fault rectified. Some faults require the component temperature to return within operating range before reset, is possible also some sequences may take up to 3 minutes before lock-out is displayed, e.g. air pressure switch failure fault 1 or water over heating fault 6. FAULT CODES
FAULT Lack of gas or ignition problems
Repeating 5 second flashes With no 1 second flashes
Minimum burner pressure set to low Flame supervision failure Burner on but flame indicator off
One 1 second flash Three 1 second flashes Four 1 second flashes Five 1 second flashes Six 1 second flashes Seven 1 second flashes Nine 1 second flashes Ten 1 second flashes Twelve 1 second flashes
Air pressure switch failure, crossed tubes or flue venturi blocked Low central heating pressure or Hi-limit stat failure Printed circuit board failure Flame supervision failure, indicator light on burner off Water overheating Control panel failure
Gas valve control circuit failure Domestic hot water thermistor failure Central heating thermistor failure
These fault codes are for the new type PCB with the part number MU0870700, this can be found on the bottom right hand corner of the board. You can also easily identify this PCB which has two blue transformers attached. This is a direct replacement for the older PCB with the part number MU0868700, this can be found on the bottom centre of the board. Note: Fan wire will need threading down from the fan to allow the plug to reach the repositioned J10 terminal.

Arleigh International

http://www.arleigh.co.uk/default.aspx?section=193938
MORCO / FAGOR FEB-20E COMBI

NSA800

PCB (FCB1180)

NSA801

High Limit Stat

NSA802

Heat exchanger (FCB1025)

NSA803

Spark electrode (FCB1070)

NSA804

C.H. Thermistor (FCB1080)

NSA805

Main burner injector (FCB1075)

NSA806

Air pressure switch (FCB1045)

NSA807

D.H.W Thermistor (FCB1175)

NSA808

Pump (FCB1125)

NSA809

Diaphragm (FCB1170)

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NSA810

Gas valve assembly (FCB1130)

NSA811

Spark generator (FCB1135)

NSA812

Microswitch (FCB1165)

NSA814

Flow Valve, (Replaces Water Control Valve(FCB1160))
Plastic water filter, 5 pack WHITE

NSA815

Expansion Vessel (FCB1020) RED

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