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2

Contents 

 

Design principles & operating sequence 

Page 

 1.1  Principle 

components 

3

  1.2   Mode of operation (at rest) 

3

  1.3   Mode of operation 

3

  1.4   Safety devices 

3

 

Technical data 

Page

  2.1   Central heating 

4

 2.2  Gas 

pressures 

4

 2.3  Dimensions 

4

 2.4 

  Clearances 

4

 2.5  Connections 

4

 2.6 

  Electrical 

4

  2.7 

Flue details (concentric) 

4

  2.7A  Flue details (twin pipes) 

4

  2.7B  Flue details (80/125) 

4

 2.8  Effi 

ciency 

4

 2.9  Emissions 

4

 

General requirements (UK) 

Page

 

  3.1   Related documents 

6

  3.2   Location of appliance 

6

  3.3   Gas supply 

6

  3.4   Flue system 

6

  3.5   Air supply 

6

  3.6   Water circulation 

6

  3.7   Electrical supply 

7

  3.8 

Mounting on a combustible surface 

7

  3.9   Timber framed buildings 

7

 3.10 Inhibitors 

7

  3.11  Appliance pipework confi guration 

7

 

General requirements (EIRE) 

Page

 

  3A.1   Related documents 

9

  3A.2   Location of appliance 

9

  3A.3   Gas supply 

9

  3A.4   Flue system 

9

  3A.5   Air supply 

9

  3A.6   Water circulation 

9

  3A.7   Electrical supply 

9

  3A.8  Mounting on a combustible surface 

9

  3A.9   Timber framed buildings 

9

 3A.10 

Inhibitors 

10

  3A.11 Appliance pipework confi guration 

10

  3A.12 Declaration of conformity 

10 

   

 

Installation Page

 4.1 

  Delivery 

11

 4.2 

  Contents 

11

 4.3 

  Unpacking 

11

  4.4   Preparation for mounting the appliance  

11

  4.5 

Fitting the fl ue 

11

  4.6   Connecting the gas & water 

15

 4.7  Electrical 

connections 

16

 

  Commissioning 

   Page 

  5.1 

Gas supply installation 

18

  5.2   The heating system 

18

  5.3 

Initial fi lling of the system 

18

  5.4   Initial fl ushing of the system 

18

  5.5   Pre-operation checks  

18

  5.6   Initial lighting 

18

  5.7 

Checking gas pressure & combustion analysis 

18

  5.8   Final fl ushing of the heating system 

19

  5.9 

Setting the boiler operating temperature 

19

  5.10   Setting the system design pressure 

19

  5.11   Final checks 

19

  5.12   Instructing the user 

19

 

Servicing  

Page

 6.1  General 

20

  6.2   Routine annual servicing 

20

  6.3 

Replacement of components 

20

  6.4 

Component removal procedure 

20

  6.5 

Automatic air release valve 

20

 6.6  Primary 

thermistor 

20

 6.7  Return 

thermistor 

20

  6.8 

Printed circuit board 

21

 6.9  Gas 

valve 

21

 6.10 Injectors 

21

  6.11  Electrodes and condense sensor 

21

  6.12  Flue fan & burner assembly 

22

  6.13  Main heat exchanger 

23

  6.14   Condense trap removal 

23

  6.15  Flue collector removal 

23

 

  Checks, adjustments and fault fi nding  

Page

  7.1   Checking appliance operation 

24

  7.2   Appliance modes of operation 

24

  7.3   Appliance fan speeds 

24

  7.4   Checking the CO

2  

 & adjusting the valve 

25

  7.5   Combustion analysis test 

26

  7.6 

External faults  

26

  7.7   Electrical checks 

26

  7.8   Fault fi nding 

26

  7.9 

Component values & characteristics 

27

 7.10 Fault 

codes 

27

 

 Wiring diagrams 

Page

 8.1  External 

wiring 

28

  8.2 

Typical control applications 

28

 8.3  Other 

devices 

28

  L.P.G. instructions 

Page

  10.1  Related documents  

31

  10.2   Technical data 

31

  10.3  Converting the appliance gas type 

31

 10.4 Gas 

supply 

31

  10.5  Gas supply installation 

31

  10.6  Adjusting the gas valve 

31

  10.7  Combustion analysis test 

32

  10.8   Appliance fan speeds 

32

   

Commissioning checklist

 33

  

Benchmark

 40-41 

   

Содержание MYNUTE 15 VHE

Страница 1: ...TO BE RETAINED BY USER Mynute VHE High efficiency open vent boiler Vok ra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic...

Страница 2: ...5 3 Initial filling of the system 18 5 4 Initial flushing of the system 18 5 5 Pre operation checks 18 5 6 Initial lighting 18 5 7 Checking gas pressure combustion analysis 18 5 8 Final flushing of th...

Страница 3: ...voltage directive 2006 95 EC Directive 2009 125 EC Ecodesign for energy using ap pliances Directive 2010 30 EU Indication by labelling of the con sumption of energy by energy related products Delegate...

Страница 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...

Страница 5: ...sure flame stability at the burner Once successful ignition has been achieved the electronic circuitry increases the gas rate to 75 for a period of 15 minutes Thereafter the boiler s output will eithe...

Страница 6: ...50mm from casing or 25mm above flue elbow whichever is applicable Bottom 150mm Front 600mm 2 5 Connections Flow return 22mm Gas 15mm Condense 21mm 2 6 Electrical Power consumption Watts 35 Supply V Hz...

Страница 7: ...ed 15 kW Seasonal space heating energy efficiency s 93 For boiler space heaters and boiler combination heaters useful heat output For boiler space heaters and boiler combination heaters useful efficie...

Страница 8: ...3 GAS SUPPLY The gas meter as supplied by the gas supplier must be checked to ensure that it is of adequate size to deal with the maximum rated input of all the appliances that it serves Installation...

Страница 9: ...ins electricity supply must allow for complete isolation from the supply The preferred method is by using a double pole switch with a contact separation of at least 3mm The switch must only supply the...

Страница 10: ...top of the boiler to the bottom of the F E tank shall be no less than 1 metre whilst the maximum distance shall be no greater than 30 metres The distance between the bottom of the F E tank and the hi...

Страница 11: ...ther watervapourwillcondense on leaving the terminal the effect of such pluming must be considered If installed less than 2m above a pavement or platform to which people have access including balconie...

Страница 12: ...he combined feed and vent pipe shall be unrestricted 3A 11 2 ALTERNATIVE CLOSE COUPLED ARRANGEMENT If necessary or if preferred a close coupled arrange ment for the feed and expansion pipe work can be...

Страница 13: ...if applicable 4 5 FITTING THE FLUE The top flue outlet permits both horizontal and vertical flue applications to be considered alternatively the Vokera twin flue system can be utilised if longer flue...

Страница 14: ...d an appropriate type and quantity of fixing should be used to ensure that the bracket is mounted securely Once the bracket has been secured to the wall attach the rear flue terminal to the appliance...

Страница 15: ...730mm 208mm Using the dimensions given in fig 12 as a reference mark and cut a 115mm hole in the ceiling and or roof X X 139 mm Fit the appropriate flashing plate to the roof and insert the vertical...

Страница 16: ...be given to the fact that there is the possibility of a small amount of condensate dripping from the terminal Ensure that the entire flue system is adequately sup ported use at least one bracket for...

Страница 17: ...centric to twin converter The last twin flue pipes must be pushed 50mm onto the male spigots of the concentric to twin converter You must ensure that the entire flue system is properly supported and c...

Страница 18: ...iled instructions ANY EXTERNAL CONTROL OR WIRING MUST BE SERVED FROMTHE SAME ISOLATOR AS THAT OF THE APPLIANCE The supply cable from the isolator to the appliance must be 3 core flexible sized 0 75mm...

Страница 19: ...fig 21 Pass the pump cable first through the cable anchorage point and then through the cable glands Connect the pump cable wires LIVE NEUTRAL EARTH to their corresponding terminals Live brown Neutral...

Страница 20: ...e 7 8 particularly continuity polarity and resistance to earth Ensure the 3 AMP fuse supplied with the appliance has been fitted Ensure the system has been properly filled and vented Ensure the flue s...

Страница 21: ...ECURED ENSURE ALL PIPE WORK IS RE CHECKED FOR TIGHTNESS RE FIT APPLIANCE CASING COMPLETE BENCHMARK CHECKLIST FOR UK ONLY Complete details of the boiler controls installation and commissioning in the B...

Страница 22: ...pliancedesignspecifica tion Anydeteriorationinperformancemustbeidentified and rectified without delay Check that the burner and main heat exchanger are clean and free from any debris or obstruction Ch...

Страница 23: ...e unit Disconnect the electrical plug and leads from the gas valve slacken and unscrew gas valve inlet and outlet connections Please note the sealing washers A must be discarded and replaced with new...

Страница 24: ...cations Step 4 fig 29 Locate and remove the 3 nuts B that secure the fan flue assembly to the heat exchanger The fan flue assembly can now be removed with care Step 5 The burner can now be removed wit...

Страница 25: ...he appliance ease the control panel from its location Step 2 Disconnect all wiring connections from the flue fan as sembly and heat exchanger Step 3 Slacken the gas pipe A at the outlet connection and...

Страница 26: ...epumpwillrunfor15 secondsthenofffor15 seconds and will not fire until this period has elapsed 7 2 3 HEATING MODE With the selector switch in the ON position and any additional controls time clock prog...

Страница 27: ...G Locate and gently turn the HTG trimmer till the minimum value fan speed is obtained and check that it corre sponds with the appropriate CO2 value Minimum for the respective appliance If the CO2 read...

Страница 28: ...nce terminal strip fig 21 NOTE Should it be found that the fuse has failed but no fault is indicated a detailed continuity check will be required to trace the fault A visual inspection of components m...

Страница 29: ...uity If the boiler still fails to respond refer to the detailed faultfinding flowcharts located at the end of this section CODE CAUSE ALARM TYPE ACTION AL10 Ignition failure not flame sensed con dense...

Страница 30: ...YPICAL CONTROL APPLICATIONS The appliance can be used with the following controls Single channel voltage free time clocks Programmable room thermostats Externaltwin channelprogrammers Theappliancecan...

Страница 31: ...nsformer FS Flow thermistor NTC RS Return thermistor NTC AD02X 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 exchange...

Страница 32: ...30 FUNCTIONAL DIAGRAM 8 4 1 S Plan with Vokera 2 channel programmer 8 4 2 Y Plan with Vokera 2 channel programmer Fig 40 Fig 41 N L E...

Страница 33: ...he meter must be purged and checked for gas soundness 10 6 CORRECTING THE CO2 VALUES ADJUSTING THE GAS VALVE THE GAS VALVE MUST BE SET UP OR ADJUSTED WITHTHE AID OF A PROPERLY CALIBRATED FLUE GAS ANAL...

Страница 34: ...If different adjust the gas valve according to the above 10 8 APPLIANCE FAN SPEEDS The appliance fan speeds require to be checked and or adjusted prior to making any adjustments to the gas valve or i...

Страница 35: ...tabilise YES Is CO less than 350ppm AND CO CO2 ra o less than 0 004 NO Boiler is opera ng sa sfactorily No further ac ons required Ensure test points are capped boiler case is correctly replaced and a...

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Страница 37: ...HU LQWHUORFN 3URYLGHG ALL SYSTEMS 7KH V VWHP KDV EHHQ XVKHG DQG FOHDQHG LQ DFFRUGDQFH ZLWK 6 DQG ERLOHU PDQXIDFWXUHU V LQVWUXFWLRQV Yes KDW V VWHP FOHDQHU ZDV XVHG KDW LQKLELWRU ZDV XVHG 4XDQWLW OLWUH...

Страница 38: ...SKRQH 1R DV VDIH UHJLVWHU 1R 5HFRUG W PD UDWH 2 SSP AND 2 W PLQ UDWH KHUH 3RVVLEOH 2 SSP AND 2 RPPHQWV 6LJQDWXUH SERVICE 04 DWH QJLQHHU QDPH RPSDQ QDPH 7HOHSKRQH 1R DV VDIH UHJLVWHU 1R 5HFRUG W PD UDW...

Страница 39: ...37...

Страница 40: ...38...

Страница 41: ......

Страница 42: ...1HG enquiries vokera co uk www vokera co uk www vokera ie Sales General Enquires T 0844 391 0999 F 0844 391 0998 Vok ra Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vok ra Limited...

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