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42

F

IG

. 6.3

B

F

IG

. 6.4

6.

SERVICING INSTRUCTIONS

The life of individual components vary and they will need
servicing or replacing as and when faults develop.
The fault finding sequence chart in S

ECTION

7 will help to

locate which component is the cause of any malfunction,
and instructions for removal, inspection and replacement
of the individual parts are given in the following pages.

6.1

R

EPLACEMENT OF

P

ARTS

6.2

T

O

G

AIN

G

ENERAL

A

CCESS

All testing and maintenance operations on the boiler
require the control panel to be lowered. This will also
require the removal of the casing.

6.2.1 Removing the front panel

1. Loosen the fastening screws “A” of the control panel

located on the lower part of the panel itself. (F

IG

. 6.1);

2. The control rotates on two lateral hinges; the panel

stays in a horizontal position, which allows access to
the inner parts of the boiler (F

IG

. 6.2);

3. Remove the screws “B” from the front panel bottom lip

(F

IG

. 6.3);

4. Lift the front panel up and forward from the raised screws

at the the top of the casing (F

IG

. 6.4).

A

F

IG

. 6.1

F

IG

. 6.2

To ensure efficient safe operation, it is recommended that
the boiler is serviced annually by a competent person.

Before starting any servicing work, ensure both the
gas and electrical supplies to the boiler are isolated
and the boiler is cool and suitable protective clothing
is worn.
Before and after servicing, a combustion analysis should
be made via the flue sampling point (please refer to
S

ECTION

3.4 for further details).

After servicing, preliminary electrical system checks must
be carried out to ensure electrical safety (i.e. polarity,
earth continuity, resistance to earth and short circuit).

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Содержание microGENUS HE 24 MFFI

Страница 1: ...ons Type C Boilers microGENUS HE 24 MFFI G C N 47 116 37 microGENUS HE 28 MFFI G C N 47 116 38 microGENUS HE 32 MFFI G C N 47 116 39 LEAVE THESE INSTRUCTIONS WITH THE END USER Country of destination G...

Страница 2: ...EPLACEMENT OF PARTS PAGE 42 6 2 TO GAIN GENERAL ACCESS PAGE 42 6 2 1 REMOVING THE FRONT PANEL PAGE 42 6 2 2 REMOVING THE SEALED CHAMBER FRONT PANEL PAGE 43 6 2 3 REMOVING THE SIDE PANELS PAGE 43 6 3 A...

Страница 3: ...e i e gloves Before connecting the appliance check that the information shown on the data plate and the table in Section 9 comply with the electric water and gas mains of the property You will find th...

Страница 4: ...Panel 9 Burner 10 Detection Electrode 11 Ignition Electrodes 12 Motorised Valve 13 Condensate trap 14 Domestic Hot Water Temperature Probe 15 Low Water Pressure Switch 16 Secondary Heat Exchanger 17 G...

Страница 5: ...ed hot water boilers of rated input not exceeding 70kW BS 6891 1998 Installation of low pressure gas pipe up to 28mm BS 7671 2001 IEE wiring regulations BS 4814 1990 Specification for expansion vessel...

Страница 6: ...the wall must be protected by a sheet of fireproof material If the appliance is to be fitted into a timber framed building guidance should be sought from the Institute of Gas Engineers document REF I...

Страница 7: ...E E Regulations and applicable local regulations The appliance is supplied with a fly lead already connected this must be connected to a 240v supply fused at 3A and must facilitate complete electrica...

Страница 8: ...soldered or compression fittings Where possible pipes should have a gradient to ensure air is carried naturally to air release points and water flows naturally to drain taps The appliance has a built...

Страница 9: ...g of the main exchanger and failure of hydraulic components VR003A RESIDUAL HEAD OF THE BOILER D T 20 C DOMESTIC WATER The domestic water must be in accordance with the relevant recommendation of BS 5...

Страница 10: ...through the formation of oxides and bacterial agents To prevent this problem it is necessary to use pipes with an oxygen proof barrier in accordance with standards DIN 4726 4729 If pipes of this kind...

Страница 11: ...r sink trap The connection must be upstream of the washing machine sink If the connection is down stream of the waste trap then an additional trap giving a minimum water seal of 75 mm and an air break...

Страница 12: ...cal flue terminal E E FLUE SYSTEM 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...

Страница 13: ...E CLAMPS 4X SCREWS 2x Seals Once the boiler has been positioned on the wall insert the elbow into the socket and rotate to the required position NOTE It is possible to rotate the elbow 360o on its ver...

Страница 14: ...t No 3318095 Push the adaptor onto the boilers flue connection grease the seals then add extensions or elbows as required secure the adaptor using the clamp and screws provided To fit extensions or el...

Страница 15: ...d from the total flue length and for each 45o 0 5 metres must be subtracted from the total flue length the height of the vertical adaptor and a 45o bend can be seen in Fig 2 18 Mark the position of th...

Страница 16: ...Fig 2 17 onto the exhaust manifold and secure with the clamp fit the vertical adaptor onto the vertical starter kit note there is no need to use a clamp to secure this as it is a push fit connection t...

Страница 17: ...ake pipe can be run horizontally however the terminal and the final 1 metre of flue must be installed either horizontally or with a slight fall away from the boiler to avoid rain ingress It is also st...

Страница 18: ...ust is vertical and the air intake horizontal the terminals must be on the same side of the building 100 60 mm In the event that twin flue pipes are used and the boiler has a side clearance of less th...

Страница 19: ...ow m Length Reduction 90o elbow m Coaxial Systems 60 100 Type 1 Between 500 mm 1 m Between 1 m 4 m 4 m 0 5 m 1 0 m Type 2 Type 3 Coaxial Systems 80 125 Type 1 TBC TBC 10 m TBC TBC Type 2 Type 3 Twin P...

Страница 20: ...20 Fig 2 22 NOTE DRAWINGS ARE INDICATIVE OF FLUEING OPTIONS ONLY TYPE 1 TYPE 5 TYPE 4 TYPE 3 TYPE 2 FIG 2 21...

Страница 21: ...mpt to relight should the boiler lockout again the assistance of an Authorised Service Engineer should be sought Should the boiler develop a fault that cannot be corrected by resetting the boiler the...

Страница 22: ...ert the thermostat cable through the cable grommet and fasten it by means of the cable clamp provided 4 Connect the thermostat wires to the terminal block A2 Picture 4 Diagram A Fig 2 24 5 If a remote...

Страница 23: ...ontrol panel see Section 2 12 4 Remove the screws D1 to gain access to the mechanical time clock FIG 2 27 5 Unplug the electrical connection from the PCB D7 FIG 2 28 and unscrew the four screws FIG 2...

Страница 24: ...to 0 to turn the central heating off permanently 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 1 0 1 0 1 11 1 1 21 2 13 13 1 41 4 1 51 5 1 6 1 6 1 7 1 7 1 8 1 8 19 19 2 0 2 0 2 1 2 1 2 2 2 2 23 23 24 24 9 9 6...

Страница 25: ...instruction required for the current time You may need to manually select the desired switching state with the key Thereafter as the unit encounters further switching instructions in the memory in re...

Страница 26: ...N203 CN206 CN206 CN205 CN203 CN201 CN303 CN302 CN201 CN300 CN302 CN303 CN304 CN205 CN200 H L M I N O P Q Blk Blk Blk Blk Gry Gry Gry Gry Gry Pnk Pnk Pnk Gry or Bl Wh Wh Wh Rd Rd Rd Rd Rd Blk Blk Blk B...

Страница 27: ...Flow NTC A09 Domestic Hot Water NTC A10 Domestic Hot Water Flow Switch A11 Low Water Pressure Switch A12 Modulator A13 Air Pressure Switch A14 Overheat Thermostat A15 External Timer Room Thermostat A...

Страница 28: ...t Water Temperature NTC 12 Secondary Heat Exchanger 13 Gas Valve 14 D H W Flow Switch 15 D H W Inlet Filter 16 Automatic By pass 17 Safety Valve 18 Pressure Gauge 19 Circulation Pump with Automatic Ai...

Страница 29: ...heating system until water is heard to flow do not open fully Open each air release tap starting with the lowest point and close them only when clear water free of air is visible Purge the air from th...

Страница 30: ...ating system again add a flushing detergent we highly recommend the use of a flushing detergent appropriate for the metals used in the circuit These include Fernox Superfloc BetzDearborn Sentinel X300...

Страница 31: ...s for a brief period Check the system pressure and if it has dropped open the filling loop again to bring the pressure back up to 1 5 bar 2 Make sure that all radiator valves are open 3 Check the flue...

Страница 32: ...A To access the areas in which adjustments are made it is necessary to open the control panel as indicated in SECTION 2 12 then remove the rear inspection cover by unscrewing the two screws A Access i...

Страница 33: ...e for assistance 1 2 3 4 5 6 1 2 3 4 5 6 E C II DISPLAY CAUSE A A 0 01 1 No flame after safety time 7 seconds A A 0 03 3 The heating flow temperature exceeds 103o C during operation A A 7 77 7 Condens...

Страница 34: ...minute in CH and 1 minute in DHW After 2 minutes the PCB will check the temperature at the Return Sensor should the temperature be 8o C or higher the boiler will return to stand by Should the temperat...

Страница 35: ...n SECTION 4 2 page 39 4 Check and adjust the soft light setting as detailed in SECTION 4 2 page 39 5 Run the Domestic Hot Water manipulate the Domestic Hot Water temperature control knob to check the...

Страница 36: ...the location of all drains isolating valves and air vents 4 Explain how to turn the appliance off for both short and long periods and advise on the precautions necessary to prevent damage in the even...

Страница 37: ...ts mm Consumption 15 C 1013mbar max min m3 h Consumption 15 C 1013mbar max min Kg h Gas Burner Pressure max min mbar The boiler can be converted to use either methane natural gas G20 or L P G G30 G31...

Страница 38: ...ensation pipe D1 either from the gas valve or from the sealed chamber 4 Turn the On Off knob to ON position green light and ensure that the hot water temperature control knob is set to maximum Turn on...

Страница 39: ...se the pressure or anti clockwise to reduce the pressure Adjust the setting to the required heating value displayed on the pressure gauge as indicated in Table B shown on Page 40 3 Turn off the boiler...

Страница 40: ...ulating the heating power for butane gas G30 Regulating the heating power for propane gas G31 34 34 36 36 38 38 40 40 model 24 model 28 model 32 model 24 model 28 model 32 model 24 model 28 model 32 B...

Страница 41: ...any damaged seals as necessary see Exploded View on Pages 63 64 for more details 8 Remove clean and refill the condensate trap and condensate hoses see Section 6 3 10 check the drain system for correc...

Страница 42: ...The control rotates on two lateral hinges the panel stays in a horizontal position which allows access to the inner parts of the boiler FIG 6 2 3 Remove the screws B from the front panel bottom lip F...

Страница 43: ...the sealed chamber front cover from the locating pins FIG 6 6 FIG 6 5 C C FIG 6 6 6 2 3 Removing the side panels 1 Remove the four screws D for each side panel FIG 6 7 2 Pull the panel away from the...

Страница 44: ...ew H FIG 6 13 4 Gently slide the electrode downward FIG 6 14 6 3 2 Removing the burner and jets 1 Remove the screws F from the burner FIG 6 9 2 Remove the burner FIG 6 10 3 Disconnect the electrodes s...

Страница 45: ...c Check that the cables have been connected correctly d Check that the rubber gasket seals the cable electrode connection point completely FIG 6 13 FIG 6 14 H 1 Drain the boiler of water 2 Remove the...

Страница 46: ...2 Remove screws N on the top of the sealed chamber FIG 6 21 3 Lift out the air pressure switch 4 Unscrew the two screws O to remove the switch from the plate FIG 6 22 6 23 5 Reassemble in reverse ord...

Страница 47: ...orrectly 6 3 6 Removing the fan 1 To remove the flue sensor disconnect electrical connections S FIG 6 27 2 Remove screws T and remove the flue sensor FIG 6 28 6 29 3 To remove the condensate sensor re...

Страница 48: ...ect the condensate trap tube FIG 6 31 3 Loosen the nut W FIG 6 32 4 Remove the four screws X FIG 6 33 5 Remove the recuperator FIG 6 34 6 35 6 Reassembled in reverse order 6 3 8 Removing the Recuperat...

Страница 49: ...NGER THAT FLUE GASSES COULD LEAK INTO THE ROOM IF THE FRONT COVER IS REMOVED SHOULD IT BE NECESSARY TO REMOVE THE RECUPERATOR THE WHOLE UNIT MUST BE REMOVED 6 3 9 Removing the Recuperator Housing FIG...

Страница 50: ...see previous section 3 Release the nuts A4 FIG 6 45 4 Remove the screws A5 from the bottom of the gas valve FIG 6 46 5 Remove the gas valve FIG 6 47 FIG 6 45 A4 A4 6 4 1 Removing the spark generator 1...

Страница 51: ...6 49 4 Push the insulation of the exchanger towards the rear of the boiler and lift upwards and remove from the front of the boiler FIG 6 50 5 Push the exchanger towards the rear of the boiler and lif...

Страница 52: ...essure switch by using a spanner on the nut FIG 6 53 3 Remove the pump pressure switch FIG 6 54 FIG 6 52 A8 A8 FIG 6 53 FIG 6 54 6 5 3 Removing the safety valve 1 Disconnect the discharge pipe work fr...

Страница 53: ...ing the pump 1 Remove the electrical connetction B2 FIG 6 61 2 Release the nut B3 FIG 6 62 3 Remove the retainig clip B4 from the side of the pump housing FIG 6 63 4 Remove the screw B5 FIG 6 64 5 Rem...

Страница 54: ...66 FIG 6 65 B5 B6 B7 6 5 6 Removing the pressure gauge 1 Remove the U clip B8 FIG 6 67 2 Push the pressure gauge through the control panel from the rear using a screwdriver FIG 6 68 6 69 B8 FIG 6 68...

Страница 55: ...C1 FIG 6 71 4 Remove the expansion vessel FIG 6 72 FIG 6 70 B9 FIG 6 71 FIG 6 72 C1 6 5 8 Removing the overheat thermostat 1 Disconnect the overheat thermostat electrical connections C2 FIG 6 73 2 Th...

Страница 56: ...6 5 11 Removing the diverter valve actuator 1 Unplug the electrical connector C3 FIG 6 79 2 Release the retaining clip C4 and remove the diverter valve actuator 6 5 9 Removing the C H temperature sens...

Страница 57: ...switch using a screwdriver FIG 6 81 6 82 6 6 ACCESS TO THE CONTROL SYSTEM 6 6 1 Checking the fuses 1 Remove the inspection cover on the reverse of the control panel and unscrew the screws C6 FIG 6 83...

Страница 58: ...ion from the P C B 6 Unplug carefully the EEPROM C9 FIG 6 88 7 Remove the screws D1 FIG 6 89 8 Separate the facia panel from the rear of the control panel 9 Remove the main P C B unscrew the screws D2...

Страница 59: ...FIG 6 92 6 6 3 Removing the time clock 1 Disconnect the electrical connections D5 from the clock FIG 6 93 2 Remove screws D6 FIG 6 93 3 Lift out the time clock from the control panel FIG 6 94 FIG 6 9...

Страница 60: ...conomy 1 There is sufficient water in the system 2 The gas is turned on 3 The electrical supply is turned on 1 Check reset system pressure 2 Check restore gas supply 3 Check replace short circuited he...

Страница 61: ...rcuit flow switch operation 3 Check the pressure on the water gauge and fill system to 1 bar 1 Check pump cable 2 Check replace main P C B Release replace pump Turn the ON OFF button POWER TO THE PUMP...

Страница 62: ...NERATED REGULARLY YES YES NO NO NO NO YES YES YES YES NO NO 1 Check the power supply of the gas valve 2 Check for an air pressure signal 3 Check the gas pressure on the burner 4 Check the soft light a...

Страница 63: ...7 83 82 80 81 43 105 44 44 104 102 92 113 93 96 95 22 98 99 40 39 33 109 110 111 101 119 90 88 8 7 5 12 11 10 9 10 61 10 301 302 303 304 305 305 123 124 122 53 53 118 44 91 89 89 71 6 53 53 69 70 128...

Страница 64: ...64 401 402 403 code 65100547 code 65101257 503 502 501 504 601 606 604 601 602 610 601 611 609 603 607 603 608 605 602 701 705 701 701 702 703 704 701 701 code 65102576...

Страница 65: ...02567 73 Seal Silicone 990368 80 Main Exchanger 24kW 65102586 80 Main Exchanger 28 32 kW 65102585 81 Temperature Probe Clip 990686 82 Overheat Thermostat 990605 84 O Ring Secondary Exchanger 573825 87...

Страница 66: ...in D H W Flow Rate DT 35 C l min D H W Minimum Flow Rate l min Pressure of Domestic Hot Water max min bar Domestic Hot Water Nominal Pressure Natural Gas G20 bar LPG G30 G31 bar Consumption at Nominal...

Страница 67: ...ntral Heating Domestic Hot Water Temperature approx max min C Specific Flow Rate 10 minutes DT 30 C l min D H W Flow Rate DT 25 C l min D H W Flow Rate DT 35 C l min D H W Minimum Flow Rate l min Pres...

Страница 68: ...68 10 BENCHMARK COMMISSIONING CHECKLIST...

Страница 69: ...69 11 SERVICE INTERVAL RECORD...

Страница 70: ...70...

Страница 71: ...71...

Страница 72: ...sumed by MTS that you accept that your appliance has not been installed correctly and understand that any manufacturer s guarantee has been withdrawn On the 12 month anniversary of the appliance insta...

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