VOKERA Mynute VHE Installation & Servicing Instructions Manual Download | Manualshive

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29

SECTION 9

EXPLODED DIAGRAMS

Table 1

40

27

26

63

226

20

21

18

77

39

226

31

90

1

300

301

POS.

DESCRIPTION

20VHE

1

Frame assembly

01005496

18

Cover assembly

10028554

20

Printed circuit board

10029717

21

Led light guide

10028557

26

Instrumental panel

10028551

27

Knob assembly

10028559

31

Case Assembly

01005497

39

Hinge

01005442

40

Door panel

10028553

90

Fuse

3478

300

Wiring harness

10028596

301

Wiring harness

10029722

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Summary of Contents for Mynute VHE

Page 1: ...INSTRUCTIONS TO BE RETAINED BY USER Vok ra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK My...

Page 2: ...he system 17 5 4 Initial flushing of the system 17 5 5 Pre operation checks 17 5 6 Initiallighting 17 5 7 Checking gas pressure combustion analysis 17 5 8 Final flushing of the heating system 17 5 9 S...

Page 3: ...chnical helpline for advice should you wish to use the Mynute VHE on a sealed pressurised system This booklet is an integral part of the appliance It is therefore necessary to ensure that the booklet...

Page 4: ...e temperature selector clockwise to increase the boiler outlet temperature or counter clockwise to reduce the outlet flow temperature 2 digit LED display Displays the current outlet temperature of the...

Page 5: ...cuitry to ensure flame stability at the burner Once successful ignition has been achieved the electronic circuit increases the gas rate to 75 for a period of 15 minutes Thereafter the boiler s output...

Page 6: ...sumption Watts 75 Supply V Hz 230 50 Internal fuse 3 15A T for PCB 3 15A F for connections block External fuse 3A 2 7 Flue Details concentric 60 100 Maximum horizontal flue length 60 100mm 7 8m Maximu...

Page 7: ...ternal external corner or boundary 300 mm I Above ground roof or balcony level 300 mm J From a surface or boundary facing the terminal 1200 mm K From a terminal facing a terminal 1200 mm L From an ope...

Page 8: ...pes of a smaller size than the appliance gas inlet connection must not be used The installation must be tested for soundness in accordance with BS6891 If the gas supply serves more than one appliance...

Page 9: ...um heat exchangers is used to protect the boiler and system from the effects of corrosion and or electrolytic action The inhibitor must be administered in strict accordance with the manufacturers inst...

Page 10: ...tres The distance between the bottom of the F E tank and the highest point of the safety vent pipe must be no less than 500mm The supply of water to the F E tank should be taken from themainswatersupp...

Page 11: ...people have access including balconies or flat roofs theterminalmustbeprotectedbyaguardofdurable material The guard must be fitted centrally over the terminal RefertoI S 813 whentheterminalis0 5metres...

Page 12: ...e shall be unrestricted 3A 11 2 ALTERNATIVE CLOSE COUPLED ARRANGEMENT If necessary or if preferred a close coupled arrangement for the feed and expansion pipe work can be used as an alternative to a c...

Page 13: ...Careshouldbe exercisedwhendeterminingthepositionoftheappliance with respect to hidden obstructions such as pipes cables etc When the position of the appliance has been decided using the template supp...

Page 14: ...Connect the required number of flue extensions or bends up to the maximum equivalent flue length to the flue terminal see fig 7 8 The flue system should have a minimum of 1 maximum of3 risefromtheboil...

Page 15: ...17mm per 1000mm NOTE When cutting an extension to the required length you must ensure that the excess is cut from the plain end of the extension see fig 8 Remove any burrs and check that any seals ar...

Page 16: ...verter box ensuring that the exhaust pipe connects to theexhaustconnectionontheconcentrictotwinconverter Ifnecessarycuttheplainends male ofthetwinfluepipes to allow connection to the concentric to twi...

Page 17: ...ions 4 6 3 CONDENSE PIPE During normal operation the boiler produces condense which is collected in a trap located in the lower part of the boiler A flexible pipe condense outlet pipe is connected to...

Page 18: ...wiringdiagrams in section 8 for more detailed information 4 7 3 CONNECTINGTHE MAINS 230V INPUT fig 16 Locateandremovethescrewssecuringtheterminalblock cover 230V Pass the supply cable through the cabl...

Page 19: ...properly filled and vented Ensure the flue system has been fitted properly and in accordance with the instructions 5 6 INITIAL LIGHTING Ensure the electrical supply to the appliance is switched on En...

Page 20: ...user Failure to install and commission the appliance to the manufacturers instructions may invalidate the warranty 5 12 INSTRUCTINGTHE USER Hand over all documentation supplied with this appliance inc...

Page 21: ...ssary the condense trap to ensurecorrectoperation 6 3 REPLACEMENTOFCOMPONENTS Althoughitisanticipatedthatthisappliancewillgiveyears ofreliable troublefreeservice thelifespanofcomponents willbedetermin...

Page 22: ...NESS CHECK MUST BE CARRIEDOUT 6 11 ELECTRODES CONDENSE SENSOR fig 22 Carry out component removal procedure as described in 6 4 Unclip and remove the air chamber front and RH side covers Disconnect the...

Page 23: ...bly A locateand remove the 3 external nuts B Replace in the reverse order Ensure all seals are in good condition taking care to ensure they are replaced correctly C Fig 27 A B B A Fig 28 6 15 CONDENSE...

Page 24: ...wherebyonlythepump will run for 15 seconds then off for 15 seconds and will not fire until this period has elapsed 7 2 3 HEATING MODE WiththeselectorswitchintheONpositionandanyadditional controls time...

Page 25: ...dswitchtheboilertotheOFFmode To adjust the gas valve you must first ensure that the fan Fig 30 Maximum screw Minimum screw Compensation pipe connection 7 4 2 GAS VALVE MINIMUM SETTING Locate and gentl...

Page 26: ...mp 0 C 75 CO function time 15 min Flow NTC max temp 0 C 87 High limit thermostat 0 C 97 Burner thermostat 0 C 170 Maximum differential 0 C 35 IGNITION CONTROL VALUE Ignition attempts before L O lockou...

Page 27: ...verted Final Reset check pump ensure there is sufficient return sensor temperature higher than circulation around heating circuit s thermistors flowsensor temperature AL34 Fan tacho signal fault Final...

Page 28: ...e channel voltage free time clocks Programmableroomthermostats Externaltwin channelprogrammers Theappliancecan be used in conjunction with typical S Plan Y Plan systems see 8 4 1 8 4 2 please contact...

Page 29: ...ormer FS Flow thermistor NTC RS Return thermistor NTC AD02A Main PCB CN1 CN5 Connection to PCB high voltage X4 X9 Connection to PCB low voltage F O H T Flow over heat thermostat H E T Heat exchanger t...

Page 30: ...28 FUNCTIONALDIAGRAM 8 4 1 S Plan with Vokera 2 channel programmer 8 4 2 Y Plan with Vokera 2 channel programmer Fig 33 Fig 34 N L E...

Page 31: ...E 1 Frame assembly 01005496 18 Cover assembly 10028554 20 Printed circuit board 10029717 21 Led light guide 10028557 26 Instrumental panel 10028551 27 Knob assembly 10028559 31 Case Assembly 01005497...

Page 32: ...30 Table 2 200 27 200 27 200 580 200 580 36 25 200 200 POS DESCRIPTION 20VHE 25 Pipe 10029590 27 Pipe 10029592 36 Pipe 10029591 200 Washer 5023 580 Connection M 3 4 3 4 10029526...

Page 33: ...267 9 Pipe 10029515 17 Air venting plug 10029306 25 Siphon 10028405 26 Flexible pipe 10028540 27 Flexible pipe 10027192 71 Pipe 10028430 72 Drain tap 01005137 73 Cock 10028431 247 Washer 5203 476 O ri...

Page 34: ...de 10027864 6 Condense electrode 10026316 12 Gas pipe 10029607 13 Gas valve 10028538 15 3 4 gas cock 10020897 16 Cover for air box 10028345 19 Glass stopper assembly 10026328 27 Plug 10023805 35 Air g...

Page 35: ...exchanger assembly 01005443 7 Conveyor 10028536 12 Flue drain connection 10028421 475 Washer 125 10026323 482 Washer 10026366 487 Washer 60 10026345 509 High limit thermostat 10026982 552 Washer 60 10...

Page 36: ...Maximumgasrate 1 55 kg hr Minimumgasrate 0 39 kg hr Injectorsize 3 6 mm Efficiency SEDBUK 92 6 Band A Emissions CO max mg kWh 215 0 mg kWh CO min mg kWh 10 8 mg kWh NOx max mg kWh 97 1 mg kWh NOx min...

Page 37: ...appliance data badge 10 7 1 CHECKING ADJUSTINGTHEAPPLIANCEFAN SPEEDS Move the selector switch to the OFF position and remove the 3 selector knobs 10 7 2 ABSOLUTE MAX FAN SPEED LocatetheMAXtrimmer fig...

Page 38: ...HAT TYPE OF SCALE REDUCER HAS BEEN FITTED FOR THE DOMESTIC HOT WATER MODE MEASURE RECORD GAS RATE 3 hr MAXIMUM BURNER OPERATING PRESSURE IF APPLICABLE mbar COLD WATER INLET TEMPERATURE C HOT WATER OUT...

Page 39: ...CARD SERIAL No COMMENTS SIGNATURE SERVICE 3 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 4 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No...

Page 40: ...es vokera co uk www vokera co uk www vokera ie Sales General Enquires T 0844 391 099 F 0844 391 0998 Vok ra Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vok ra Limited reserve the...

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