Page 2 - TABLE OF CONTENTS
2 TABLE OF CONTENTS 1. GENERAL INFORMATION 1.1 G ENERAL I NSTRUCTIONS 1.2 O VERALL V IEW 2. INSTALLATION 2.1 R EFERENCE S TANDARDS 2.2 S ITING THE A PPLIANCE 2.3 O VERALL D IMENSIONS 2.4 C LEARANCES 2.5 M OUNTING THE A PPLIANCE 2.6 E LECTRICAL C ONNECTION 2.7 G AS C ONNECTION 2.8 W ATER C ONNECTIONS...
Page 3 - Check the following at least once a year:; ENERAL
This manual is an integral and essential part of the product. It should be keptwith the appliance so that it can be consulted by the user and our authorisedpersonnel. Please carefully read the instructionsand notices about the unit contained inthis manual, as they provide importanti n f o r m a t i ...
Page 4 - VERALL
4 5 - If called for by point. 3, dismantling and cleaning of the combustion chamber. 6 - If called for by point. 4, dismantling and cleaning of the burner jets.7 - Visual check of the primary heat exchanger: - check for overheating in the blade assembly; - clean the exhaust fan if needed. 8 - Adjust...
Page 5 - INSTALLATION; ITING THE
5 The technical infor mation and instr uctions provided herein below areintended for the installer so that the unit may be installed correctly andsafely. The installation and initial star t up of the boiler must be by a CORGIApproved Installer in compliance with the installation standards currently ...
Page 10 - depending on the type of flue system used by the installer.; OAXIAL
Ø 80 mm The components marked * in F IG 2.9 are present or absent depending on the type of flue system used by the installer. In addition, it is also possible to use a split (twin pipe)system by fitting a special adaptor to the flue connectorand using the aperture for the air vent intake located ont...
Page 11 - ABLE
Exhaust Type C12 (xy) C32 (xy) C42 (xy) C52 (xy) C82 (xy) Restrictor ø 43 mm L max = 11.5 m L max = 11,4 m Maximum Extension Exhaust/Air 43 m 43 m 43 m 40 m NO Restrictor L min = 11.5 m L max = 43 m L min = 11,4 m L max = 40m Risk of Condensation Forming Twin Pipe Systems ø 80/80 Piping not insulate...
Page 12 - Only a two-wire type room thermostat can be used.; OOM; WIN
12 To connect a room thermostat, it is necessary to: 1. - Open the control panel as indicated in section 3.3.2.- Remove the link “A” from the terminal block on the reverse of the control panel.3. - Insert the thermostat cable through the cable grommet and fasten it by means of the cable-clamp provid...
Page 14 - ATER
14 L EGEND : 1. Fan 2. Main Heat Exchanger 3. Overheat Thermostat 4. Burner 5. Ignition Electrodes 6. Detection Electrode 7. Motorised Valve 8. Main Circuit Temperature Probe 9. Main Circuit Flow Switch 10. Automatic By-pass 11. Domestic Hot Water Temperature Probe12. Secondary Heat Exchanger13. Gas...
Page 15 - COMMISSIONING; NITIAL
15 MTS (GB) Limited support the initiative. Within the information packyou will find a copy of the logbook. It is impor tant that this iscompleted in the presence of your customer, they are shown how to us it,and it is signed by them. Please instruct your customer that they must havetheir logbook wi...
Page 16 - adjustment knob
In order to access the inside of the boiler, it is necessary to unscrewthe fastening screws “A” of the control panel located on the lower partof the panel itself.The control panel moves downward and when pulled forward rotateson two lateral hinges.The panel stays in a semi-horizontal position, which...
Page 17 - PERATIONAL
17 3.4. I NITIAL S TART - UP (See section 3.2 for references) it is possible to:- Set the temperature of the heating system by adjusting the knob “C”- Set the temperature of the domestic hot water by turning knob “B”- The selector knob “G” allows the user to choose the economy mode (position “E”) or...
Page 18 - readings can be
The boiler is fitted with the following devices (see section 3.2 for references). 1 - I GNITION F AILURE : This control signals an ignition failure on the burner 7 seconds after alighting failure. The L.E.D. “F” will illuminate to signal the shutdownstatus.The system can be reset by pressing and rel...
Page 20 - GAS ADJUSTMENTS
20 The boiler can be converted to use either methane (natural) gas (G20)or LPG (G30 - G31) by an Authorised Service Centre.The operations that must be performed are the following:1. Replace the jets on the main burner (see table in section 4);2. Adjust the maximum and minimum thermal capacity values...
Page 21 - MAINTENANCE
21 It is recommended that the following inspections be carried out on theboiler at least once a year: 1 - Check the seals for the water connections; replacement of any faulty seals. 2 - Check the gas seals; replacement of any faulty gas seals.3 - Visual check of the entire unit.4 - Visual check of t...
Page 22 - MISCELLANEOUS; IRING; PR; BOILER; BOILER ELECTRICAL SUPPLY CABLE
22 7. MISCELLANEOUS 7.1 W IRING D IAGRAM FOR T WO H EATING Z ONES V4043H VALVE BROWN 8 BLUE 2 GREY 9 ORANGE 10 GREEN/YELLOW 3 Hone yw ell ST 699B 1002 63 N L Link L-5-8 ST 6400/ST 6300 ST 6200 3 4 N L Dr ay ton T empus 7 3 4 N L Horstmann 425, 525, 527 14 E N L Link L-2-5 Landis & Gyr R WB2 34 N...
Page 24 - Merloni TermoSanitari SpA - Italy; bief; TECHNICAL INFORMATION
Manufacturer: Merloni TermoSanitari SpA - Italy Commercial subsidiary: MTS (GB) LIMITED MTS BuildingHughenden AvenueHigh WycombeBucks HP13 5FTTelephone: (01494) 755600 Fax: (01494) 459775internet: http://www.mtsgb.ltd.ukE-mail: [email protected] Service Hot Line: (01494) 539579 23 99 84 146...
Page 25 - Country of destination: GB
ServicingInstructionsType C Boilers G.C.N: 47-116-14 47-116-15 LEAVE THESE INSTRUCTIONSWITH THE END-USER Country of destination: GB
Page 26 - TABLE OF CONTENTS
2 B063 1. SERVICING INSTRUCTIONS 1.1 R EPLACEMENT OF P ARTS 1.2 T O G AIN G ENERAL A CCESS - Removing the front panel- Removing the sealed chamber frontal cover- Removing the side panels 1.3 A CCESS TO THE C OMBUSTION C HAMBER - Removing the combustion cover- Removing the burner and jets- Removing t...
Page 27 - SERVICING INSTRUCTIONS; EPLACEMENT OF; Removing the front panel; Loosen the fastening screws “A” of the control panel located on
2. The control panel moves downward and when pulled forward, rotates on two lateral hinges; the panel stays in a semi-horizontal position, which allows access to the inner parts ofthe boiler (F IG . 1.2); 3. In order to increase the manouvering space, it is possible to raise the control panel and ro...
Page 28 - Removing the sealed chamber frontal cover; Lift the sealed chamber frontal cover from the locating pins; Removing the side panels; Remove the four screws “D” for each side panel (F
4 B063 Removing the sealed chamber frontal cover 1. Remove the screws “C” (F IG . 1.6); 2. Lift the sealed chamber frontal cover from the locating pins (F IG . 1.7). F IG . 1.6 C C F IG . 1.7 Removing the side panels 1. Remove the four screws “D” for each side panel (F IG .1.8); 2. Pull the panel aw...
Page 29 - Removing the electrodes; Removing the burner and jets; Removing the combustion cover; CCESS TO THE
Removing the electrodes Before carrying out this procedure, unscrew and slide theburner forward (see previous section).1. Remove rubber gasket “G” (Fig. 1.13);2. To remove the detection electrode disconnect the cable at its connection point close to the P.C.B. (Fig. 1.14); F IG . 1.13 G F IG . 1.14 ...
Page 30 - Gently slide the electrode downward (F; otherwise the electrode may break; Release the two connection nuts “J” connecting the; Removing the main heat exchanger
6 B063 3. Remove screw “H” (F IG . 1.15); 4. Gently slide the electrode downward (F IG . 1.16). To replace, repeat the steps in reverse order, payingparticular attention to the following:a - Centre the electrode in the positioning hole carefully, otherwise the electrode may break; b - Check that the...
Page 31 - Disconnect electrical connections “N” and; silicon pipes; Remove screw “P” and remove the fan collar clamp “Q”; Removing the fan; Remove screws “M” on the top of the sealed chamber; Unscrew to remove switch from the plate (F; Removing the air pressure switch
1. Disconnect electrical connections “N” and silicon pipes “O” (F IG .1.23); 2. Remove screw “P” and remove the fan collar clamp “Q” (F IG .1.24); 3. Remove screws “R” (F IG .1.25); 4. Remove fan and mounting plate (F IG .1.26). Removing the fan 1. Disconnect the electrical connections “K” and silic...
Page 32 - Setting the gas pressures
8 B063 1.4 S ERVICING AND R EMOVAL OF THE G AS V ALVE Setting the gas pressures 1 2 Recommended pressure for soft-light ignition 8 mbar NATURAL GAS (G20) BUTANE GAS (G30) PROPANE GAS (G31) 16 mbar 16 mbar 3 4 A B C E F D Setting the minimum and the maximum power of the boiler 1. Check that the suppl...
Page 34 - Remove the pipe from the pressure gauge and connect
10 B063 Removing the spark generator 1. Disconnect ignition leads “T” by pulling upward (F IG . 1.27); 2. Remove the screw “V” (F IG . 1.28); 3. Remove the spark generator (F IG . 1.29). 10. Remove the pipe from the pressure gauge and connect screw “C” to the pressure outlet in order to seal off the...
Page 35 - Removing the gas valve
11 B063 Important! Before any component is removed, the boilermust be drained of all water. Removing the D.H.W. (secondary) exchanger 1. Remove the screws “Y” (F IG 1.33 + F IG 1.34); 2. Push the exchanger towards the rear of the boiler, and lift upwards and remove out of the front of the boiler (F ...
Page 36 - Removing the main circuit flow switch
12 B063 Removing the safety valve1. Loosen nut “Z” (F IG . 1.36); 2. Unscrew and remove the valve (F IG . 1.37). Removing the automatic air vent1. Unscrew valve top “A1” (F IG . 1.38); 2. Remove valve (Fig 1.39). Removing the main circuit flow switch 1. Remove the cable of the main circuit flow swit...
Page 37 - Removing the pump
13 B063 Removing the pump 1. Remove the U-clip “ D1” (F IG . 1.41); 2. Remove the retaining clip “E1” (F IG . 1.42); 3. Remove the U-clip “ F1” (F IG . 1.43); 4. Release the nut “G1” (F IG . 1.44); 5. Remove the pipe “H1” (F IG . 1.45); 6. Remove the screws “I1” (F IG . 1.46); 7. Remove the pump (F ...
Page 40 - Removing the time clock
16 B063 Checking the fuses 1. Remove the inspection cover on the reverse of the control panel (F IG . 1.60); 2. Remove the fuses (F IG . 1.61). 1.6 A CCESS TO THE C ONTROL S YSTEM Removing the time clock 1. Unplug electrical connection “W1” from the clock (F IG . 1.62); 2. Remove the screws “W2” (se...
Page 41 - Separate the facia panel from the rear of the control
17 B063 Removing the P.C.B. 1. Isolate electricity;2. Remove the inspection cover from the reverse of the control panel; 3. Unplug all electrical connections from the P.C.B. (F IG . 1.65); 4. Remove the screws “X1” (F IG . 1.66); 5. Separate the facia panel from the rear of the control panel (F IG ....
Page 42 - FAULT FINDING; AULT
18 B063 2. FAULT FINDING PRELIMARY CHECKS MAKE SURE THAT: IS THE POWER L.E.D. ON? POSTION OF THE SELECTOR NO NO WINTER ESTAT E SUMMER NO NO YES YES YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES 1 - Check the fuses2 - Check the power supply cable, p...
Page 43 - YES
19 B063 IS THE PUMP RUNNING? YES NO NO NO YES YES YES POWER TO THE PUMP? DOES THE "NO WATER" L.E.D. ILLUMINATE (WITHIN 40 SECS)? 1 - Check if there is air in the system2 - Check main circuit flow switch operation3 - Check pressure on the water gauge and fill system to return to 1 bar 1 - Tur...
Page 44 - PUMP PROTECTION
20 B063 IS THE FAN RUNNING? BOILER SHUTDOWN? POWER TO FAN? NO YES YES YES NO YES NO NO NO YES 1 - Check/replace main circuit flow switch2 - Check/replace connection cable3 - Check/replace P.C.B. 1 - Check/replace air pressure switch2 - Check if reset button is jammed3 - Check/replace flame detection...
Page 45 - P ON TEST
21 B063 IS THE BURNER ALIGHT? YES NO YES YES YES NO NO NO NO YES 1 - Check/replace ignition electrode2 - Check ignition cable3 - Check spark generator4 - Check ignition electrode cable5 - Check/replace P.C.B. 1 - Check if flame strikes detection electrode2 - Check soft-light gas pressure3 - Check/re...
Page 49 - SHORT SPARE
25 B063 18 14 18 22 301 302 303 28 26 27 24 25 34 55 53 7 11 12 13 14 77 17 16 15 8 9 10 6 5 4 3 2 304 49 48 47 46 45 43 54 1 5 9 10 9 9 57 62 59 60 61 56 9 63 12 13 77 76 80 23 20 21 19 36 35 38 42 41 34 40 92 90 91 42 32 33 30 29 31 89 25 105 96 95 101 98 100 99 75 87 83 82 84 86 14 85 69 70 71 72...
Page 53 - Models; MICROGENUS 27 MFFI
SPARE PARTS EXPLODED VIEWGAS WALL BOILERS Models MICROGENUS 27 MFFI Edition 2 of 1 February 2000
Page 57 - Main flow switch top cap; NOTE DESCRIPTION; Not supplied as a spare part
PART CODE DESCRIPTION REF. NOTE 374 571770 Main flow switch top cap 375 998172 Main flow switch reed system 381 998716 Burner jet full kit (NG) 12 382 998717 Burner jet full kit (LPG) 12 NOTE DESCRIPTION 11 Not supplied as a spare part 12 Not illustrated
