Installation and Servicing Instructions Type C Boilers SERIES G.C.N: 47-116-34 G.C.N: 47-116-35 G.C.N: 47-116-09 G.C.N: 47-116-10 LEAVE THESE INSTRUCTIONS WITH THE END-USER Country of destination: GB/IE...
TABLE OF CONTENTS GENERAL INFORMATION SERVICING INSTRUCTIONS 1.1. ENERAL NFORMATION 6.1. EPLACEMENT OF ARTS 1.2. ECHNICAL NFORMATION 6.2. ENERAL CCESS 1.3. VERALL 6.3. CCESS TO THE OMBUSTION HAMBER 6.3.1. EMOVING THE INSTALLATION 6.3.2. EMOVING THE RESSURE WITCH 2.1. EFERENCE TANDARDS 6.3.3.
1. GENERAL INFORMATION 1.1. ENERAL NFORMATION This manual is an integral and essential part of the product. It Read the instructions and recommendations in these Installation should be kept with the appliance so that it can be consulted by and Servicing Instructions carefully to ensure proper installation, the user and our authorised personnel.
I.E.E. Wiring Regulations, the bylaws of the local water authority, in Scotland, in accordance with the Building Standards The type C appliances (in which the combustion circuit, air (Scotland) Regulation and Health and Safety document No. 635 vent intake and combustion chamber are air-tight with “Electricity at work regulations 1989”...
2.3. VERALL IMENSIONS 27/32 RFFI SYSTEM acqua . 2.1 . 2.0 2.4. INIMUM LEARANCES EGEND In order to allow access to the interior of the boiler for maintenance A = Central Heating Flow (3/4”) purposes, the boiler must be installed in compliance with the B = Domestic Hot Water Outlet (1/2”) clearance requirements indicated in the diagram below.
2.6. E 27/32 RFFI SYSTEM LECTRICAL ONNECTION The boiler operates with alternating current, as indicated in the technical data table (Section 1.2), where the maximum absorbed power is also indicated. Make sure that the connections for the neutral and live wires correspond to the indications in the diagram.
2.8. ATER ONNECTIONS IEW OF THE OILER ONNECTIONS 27/32 MFFI Legend: A = Central Heating Flow B = Domestic Hot Water Outlet C = Gas Inlet D = Domestic Cold Water Inlet E = Central Heating Return H = Condensate discharge I = Safety valve discharge J = Drain valve Central Heating...
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ii) Connecting into the waste system of the building such as OMESTIC ATER a washing machine or sink trap. The connection must be The domestic water must be in accordance with the relevant upstream of the washing machine/sink (If the connection recommendation of BS 5546:1990.
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ATER REATMENT The boiler is equipped with an aluminium alloy main heat exchanger. The detailed recommendations for water treatment are given in BS 7593:1992 (Treatment of water in domestic hot water central heating systems); the following notes are given for general guidance: - If the boiler is installed in an existing system, any unsuitableadditives must be removed;...
2.9. ONNECTIONS YSTEM The provision for satisfactory flue termination must be made as described in BS 5440-1. The appliance must be installed so that the flue terminal is exposed to outdoor air. MPORTANT The terminal must not discharge into another room or space such as BEFORE CONNECTING THE FLUE ENSURE THAT LITRE OF...
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Exhaust Type Maximum Extension Diameter 32 MFFI Exhaust/Air of Pipes (mm) Coaxial Ø 60/100 Systems 24 (S1=S2) Ø 80/80 Twin Pipe Systems 1+48 (S1+S2) Ø 80/80 In F . 2.8 ( 11), several different types of flue systems are PAGE shown.
2.10. CCESSORY ONNECTION IMPORTANT!! Before carrying out any repairs to the appliance always . 2.9 ensure that the external power supply has been isolated. The boiler will remain live even when the ON/OFF knob is in the “O”(off) position. In order to gain access to the external control connections, it is first necessary to remove the casing (as shown in Section 3.2) then proceed as follows: 1.
2.11. The P.C.B. is fitted with 2 fuses, on the live and the LECTRICAL IAGRAM neutral. The fuse holder contains: - 5 x 20mm “3.15A Slow” glass fuses TIMER FUSE FUSE . 2.13...
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CN1 = Legend: Start of coil (black) End of coil (brown) - ON/OFF button “Hall” sensor power supply 12V (red) - Multifunction display “Hall” sensor input (white) - RESET button “Hall” sensor neutral (blue) - Green led (indicates burner on) Not used - Comfort function yellow LED - Red LED (indicates lockout)
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2.12. W ATER IRCUIT IAGRAM 27/32 MFFI . 2.14 EGEND 14 - Domestic hot water flow switch Burner 15 - Motorised valve Ignition/detection electrode 16 - Automatic By-pass Air release valve 17 - Circulation pump with automatic Main heat exchanger air release valve Central heating flow temperature probe 18 -...
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27/32 RFFI SYSTEM . 2.14 EGEND 15 - Expansion relief valve Burner 16 - Drain valve Ignition/detection electrode 17 - Automatic By-pass Air release valve 18 - Circulation pump with automatic Main heat exchanger air release valve Central heating flow temperature probe 19 - Expansion vessel Condensate Trap...
3. COMMISSIONING 3.1. NITIAL REPARATION MTS (GB) Limited support the initiative. Within the information pack you will find a copy of the Log Book. It is important that this is completed in the presence of your customer, they are shown how to use it, and it is signed by them. Please instruct your customer that they must have their Log Book with them whenever they contact a service engineer or us.
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the system the treatment of the water to prevent premature scaling of the main heat exchanger is necessary. The formation of scale strongly compromises the efficiency of the thermic exchange because small areas of scale cause a high increase of the temperature of the metallic walls and therefore add to the thermal stress of the heat exchanger.
3.2. To remove the front casing panel, follow these steps: EMOVING THE ASING Remove the screws “A” (F 3.1); Remove the four screws from case hooks (two at the top and two at the bottom) and rotate anti-clockwise (F 3.2); Lift and unhook the case panel (F 3.3).
3.3. ONTROL ANEL 27/32 MFFI . 3.4 Description Button Description Green LED ON/OFF Switch (illuminated = burner on) “COMFORT” Function Push-button Time clock Reset Button/ Selector knob for Summer/Winter Flue Test**/ scroll through Functions Menu Central Heating Temperature Adjustment Knob Menu Switch Control Panel Cover Programming “+”...
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27/32 RFFI SYSTEM . 3.4 Description Button Description Green LED ON/OFF Switch (illuminated = burner on) Heating only Time clock Reset Button/ Selector knob for Summer/Winter Flue Test**/ scroll through Functions Menu Central Heating Temperature Adjustment Knob Menu Switch Control Panel Cover Programming “+”...
3.4. 1. Make sure that: NITIAL TART the cap of the automatic air release valve is loosened; the system pressure is at least 1 bar on the pressure gauge “F” (Fig. 3.4); the gas cock is closed (Fig. 3.5); the electrical connection has been carried out in the correct manner.
3.5. ISPLAY ESSAGES HOWN URING During operation of the boiler, while it is carrying out its normal operations, the left-hand display shows a series of characters that ORMAL PERATION refer to the operations indicated below: - - Diagnostics phase (precedes the other operations) No request for heat Heating Pump overrun for heating...
3.6. PERATING ARAMETERS The boiler has been designed to allow easy intervention with regard to the operating parameters. 3.6.1 EGULATION ABLE Summary of the functions accessed when the RESET button and the menu button are pushed at the same time for 5 seconds.
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left-hand display right-hand display Function factory setting selects low temperature systems from 0 0 0 0 to 0 0 1 1 0 0 1 1 or std systems Temperature regulation controlled by from 9 9 0 0 to 9 9 1 1 9 9 0 0 external sensor p p 6 6...
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Soft light adjustment 1 1 The soft light can be adjusted between the maximum power (shown on the display as “00”, i.e. 100%) and the minimum power (shown on the display as “01”, i.e. 1%). The boiler is factory set to a value which is suitable for the ignition with any type of gas (approx.
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Boiler types Factory setting: 00 - ACO 27 / 32 MFFI (C.H. + D.H.W.) 02 - ACO 27 / 32 RFFI SYSTEM (C.H. only) HIS PARAMETER MUST NEVER BE ADJUSTED Secondary outlet Function E E (This parameter can be modified only with the interface PCB connected) With the interfa ce PCB connected, it is possible to set the boiler to operate with one of the following accessories, (see Section...
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ETTING THE EMPERATURE IELD it is possible to make the Using the programming keys following adjustments: “0 0 0 0 ” signifies that the flow temperature (which may be set by means of the knob on the front control panel) may be regulated from 20 to 75°C.
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P P 5 5 ETTING THE URVE NCLINE (Only enabled when an outdoor sensor is installed) When using an outdoor sensor, the microprocessor-controlled P.C.B. calculates the most suitable flow temperature, taking into account the exter nal temperature and the type of system. The microprocessor is capable of doing this because it is possible to establish a link between the external temperature and the flow temperature of the Central Heating system water.
The boiler is designed to monitor some operating variables and 3.6.2 ETTINGS ISPLAY settings by means of the display on the front control panel. Keeping, at the same time, the reset and the menu key pressed for over 10 seconds will allow access to the “readout” function of the main system variables.
3.6.3 G Supply pressure check AS REGULATION CHECK 1. Loosen screw “1” (Fig. 3.31) and conect the pressure gauge connection pipe into the test point. 2. Turn the boiler on at maximum power, enabling the “flue sweep” function (press the RESET key for 5 seconds and press the programming keys + and - together).
3.6.4 I The ignition delay can be adjusted to between 0 and 7 minutes. GNITION ELAY DJUSTMENT The delay is factory set to 2 minutes. The value set can be displayed and modified as illustrated in paragraph 3.6.1 (parameter 3). The maximum heating power can be adjusted to between the 3.6.5 A DJUSTING THE...
3.8. The boiler is protected from malfunctioning by means of internal OILER AFETY YSTEMS checks by the P.C.B., which brings the boiler to a stop if necessary. In the event of the boiler being shut off in this manner, a code appears on the display which refers to the type of shut-off and the reason behind it.
If the flow temperature remains between 3-8°C the pump will AILY In order to prevent the shutdown of the components, the continue to run for two minutes for a maximum of 10 times boiler carries out a self-diagnosing test every 21 hours: the unless a temperature above 8°C is detected in the central pump turns on for 15 seconds and the diverter valve moves.
4. ZONE VALVES The boiler is capable of managing a heating system that uses zone valves. The electrical connection of these valves is carried out by means of the appropriate ter minal board (indicated in the “E ” section). LECTRICAL ONNECTION By way of example, two possible types of systems would be: System with 2 valves with independent regulation of the zones...
5. MAINTENANCE It is recommended that the following inspections be carried out on the boiler at least once a year: Check the seals in the water group and, if necessary, replace the 5.1. ENERAL EMARKS gaskets and restore the seal to perfect working order. Check the seals in the gas group and, if necessary, replace the gaskets and restore the seal to perfect working order.
FAULT FINDING 7.1. AULT INDING UIDE It is possible to detect and correct any defect by using the standard fault finding diagrams described in this chapter. CHARTS Model 27/32 MFFI MAKE SURE THAT: 1. There is sufficient water in the system 2.
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Model 27/32 RFFI SYSTEM MAKE SURE THAT: 1. There is sufficient water in the system 2. The gas is turned on 3. The electrical supply is turned on PRESS THE ON/OFF BUTTON TO THE ON POSITION IS THE 1. Check the fuses DISPLAY ON? 2.
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IS THE PUMP RUNNING? POWER TO THE PUMP? 1. Check/replace pump cable WAS THE PLAUSIBILITY TEST Release/Replace pump OK? ( E95: test failed 1. Check the pump cable 2. Check/replace the pump 3. Check/replace the NTC probes 4. Replace the main P.C.B.
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IS THE FAN DOES CODE RUNNING? A33 APPEAR? 1. Check the fan cable 2. Replace the fan 3. Replace the main P.C.B. Replace the main P.C.B. DOES THE AIR PRESSURE SWITCH CLOSE? (E33) 1. Check the exhaust flue duct 2. Check the APS cable 3.
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27/32 MFFI SHORT SPARE PART LIST 61 60 58 57 56 55 RESET ON/OFF CONFOR cod. 65102191 RESET ON/OFF CONFOR...