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  5. User Instructions

VOKERA Vision C User Instructions

Other manuals for Vision C: Easy User Manual
Manual is about: high efficiency combi boiler

Summary of Vision C

  • Page 1

    Users instructions installation & servicing instructions these instructions to be retained by user vokèra 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. Vision c high eficiency combi boiler.

  • Page 2

    37 users instructions things you should know page 1.1 gas appliances 1 1.2 electrical supply 1 1.3 guarantee registration card 1 1.4 appliance log book (uk only) 1 1.5 how does it work? 1 1.6 dimensions 1 1.7 clearances required 1 1.8 frost protection system 1 1.9 appliance status indicators 1 getti...

  • Page 3: Users Instructions

    1 users instructions 1.1 gas appliances gas safety (installation and use) regulation (uk). In the interests of your safety and that of others it is a legal requirement that all gas appliances are installed and correctly maintained by a competent person and in accordance with the latest regulations. ...

  • Page 4

    2 fig. 1 hot water temperature selector move the selector clockwise to increase the hot water outlet temperature, or counter-clockwise to reduce the temperature pressure gauge ensure the system pressure is set correctly (minimum 0.5-bar) mode selector switch/heating temperature selector mode selecto...

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    3 digital weekly clock fig. 2 button/icon main function secondary function used to set/adjust time of day, and day of week n/a use to “advance” the heating to an on period use to increase values when setting clock & day of week. Use to program on periods for heating pattern. Use to “advance” the hea...

  • Page 6

    4 built-in clock the vision 25c & 30c incorporate a built-in digital clock and multi-inf mative lcd display. 1.1 the digital clock is pre-programmed with a default heating pattern (see table 1 below); however this can be modiied to suit individual needs (see 1.4). Pre-programmed heating pattern day ...

  • Page 7

    5 note, when the advance off function is enabled, the hea- ting will remain off until the next scheduled on period. 1.6 mode of operation to change the mode of operation (auto to man) momenta- rily press the button; the display will show the following: • auto off heating is in an off period accordin...

  • Page 8

    6 2.1 before switching on before switching the appliance on, please familiarise yourself with: - how to isolate the appliance from the gas, water, and electricity supplies; - how to check and top-up – if necessary – the system water pressure; - the time clock or programmer (if itted); - any external...

  • Page 9

    7 4.1 what if i suspect a gas leak if you suspect a gas leak, turn off the gas supply at the gas meter and contact your installer or local gas supplier. If you require further advice please contact your nearest vokèra ofice. 4.2 what if i have frequently to top-up the system if the system regularly ...

  • Page 10

    8 the vision comprises a range of high-eficiency combination boilers with outputs to dhw of 25kw and 29kw respectively. These appliances – by design – incorporate electronic ignition, circulating pump, expansion vessel, safety valve, pressure gauge and automatic by-pass. The vision range is produced...

  • Page 11

    9 1.1 principle components • a fully integrated electronic control board featuring electronic temperature control, anti-cycle control, pump over-run, self- diagnostic fault indicator, full air/gas modulation • aluminium heat exchanger • electronic ignition with lame supervision • integral high-head ...

  • Page 12

    10 section 2 - technical data 2.1 central heating vision 25c vision 30c heat input (kw) 20.00 25.00 maximum heat output (kw) 60/80°c 19.50 24.45 minimum heat output (kw) 60/80°c 4.91 5.90 maximum heat output (kw) 30/50°c 20.84 26.23 minimum heat output (kw) 30/50°c 5.36 6.40 minimum working pressure...

  • Page 13

    11 key location minimum distance a below an opening (window, air-brick, etc.) 300 mm b above an opening (window, air-brick, etc.) 300 mm c to the side of an opening (window, air-brick, etc.) 300 mm d below gutter, drain-pipe, etc. 25 mm e below eaves 25 mm f below balcony, car-port roof, etc. 25 mm ...

  • Page 14

    12 section 3 - general requirements (uk) this appliance must be installed by a competent person in ac- cordance with the gas safety (installation & use) regulations. 3.1 related documents the installation of this boiler must be in accordance with the relevant requirements of the gas safety (installa...

  • Page 15

    13 this appliance must be installed by a competent person in accordance with and deined by, the standard speciication (domestic gas installations) declaration (i.S. 813). 3a.1 related documents the installation of this boiler must be in accordance with the relevant requirements of the local building...

  • Page 16

    14 the terminal must be protected by a guard of durable material. The guard must be itted centrally over the terminal. Refer to i.S. 813, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves. 3a.5 air supply the following notes are intended for g...

  • Page 17

    15 fig. 11 4.1 delivery due to the weight of the appliance it may be necessary for two people to lift and attach the appliance to its mounting. The appliance is contained within a heavy-duty cardboard carton. Lay the carton on the loor with the writing the correct way up. 4.2 contents contained with...

  • Page 18

    16 fig.13 extending the flue connect the bend – supplied with the terminal kit – to the top of the boiler using clamp (supplied) see ig. 11. The additional bends & extensions have push-it connections, care should be taken to ensure that the correct seal is made when assembling the lue system. Connec...

  • Page 19

    17 4.5.2 concentric vertical flue the appliance can be used with either the vokèra condensing 60/100mm concentric lue system or the optional 80/125mm concentric lue system. Note these instructions relate only to the vokèra condensing 60/100mm concentric lue system. For speciic details on the install...

  • Page 20

    18 note seal the lue terminal assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproof- ing. The interior and exterior trim can now be itted. Vertical termination (ig. 18) the twin lue system must be converted to the dedicated con - centric lue kit for ...

  • Page 21

    19 4.6 connecting the gas and water the appliance is supplied with an accessory pack that includes service valves. The service valves are of the compression type. The accessory pack contains sealing washers’ etc, for use with the service valves. When connecting pipe work to the valves, tighten the c...

  • Page 22

    20 5.1 gas supply installation inspect the entire installation including the gas meter, test for tightness and purge. Refer to bs 6891 (i.S. 813 in roi) for speciic instruction. 5.2 the heating system the appliance contains components that may become damaged or rendered inoperable by oils and/or deb...

  • Page 23

    21 6.1 general to ensure the continued safe and eficient operation of the ap - pliance, it is recommended that it is checked and serviced at regular intervals. To ensure correct and safe operation of the appliance, it is essential that any worn or failed component be replaced only with a genuine vok...

  • Page 24

    22 fig. 27 fig. 28 fig. 29 a b c d e f i j fig. 30 fig. 31 m n i2 j2 g h fig. 32 o p k l via the drain valve. Ensure some water absorbent cloths are available to catch any residual water that may drip from the appliance or removed component. Undertake a complete com- missioning check as detailed in ...

  • Page 25

    23 6.14 flue fan & mixer (ig. 35-36) carry out component removal procedure as described in 6.4. Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( a1 ) and swing/rotate the gas pipe away from the fan assembly ( b1 ), (if necessary unscrew the gas pipe from the gas valve...

  • Page 26

    24 fig. 36 a1 b1 g1 m1 n1 o1 p1 j1 fig. 37 q1 t1 s1 r1 fig. 39 fig. 38 w1 v1 u1 6.16 main heat exchanger (ig. 36) carry out component removal procedure as described in 6.4. Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( a1 ) and swing/rotate the gas pipe away from t...

  • Page 27

    25 g2 fig. 42 fig. 41 h2 k2 b2 c2 d2 e2 f2 fig. 40 6.20 flue collector removal (ig. 40) carry out component removal procedure as described in 6.4. Remove the air chamber front cover. Remove the heat exchang- er as per 6.16. Locate and remove the screw ( y1 ) that secures the lue gas analysis test po...

  • Page 28

    26 7.3 checking the co 2 and adjusting the gas valve the gas valve must be set-up or adjusted with the aid of a properly calibrated flue gas analyser. Isolate the appliance from the electrical supply and remove the appliance casing as described in 4.7.1. Set the lue gas analyser to read co2 and inse...

  • Page 29

    27 fig. 44 7.3.2 gas valve maximum setting set the co 2 button at maximum (see 7.3.1), once the maximum is obtained check that it corresponds with the appropriate co 2 value (maximum) for the respective appliance (see 2.11). If the co 2 reading is correct, proceed to gas valve minimum setting (7.3.3...

  • Page 30

    28 the fault. A visual inspection of components may also assist in locating the fault. 7.7.3 polarity check with the appliance connected to the electrical supply and us- ing a suitable multimeter, carry out the following voltage tests: • connect test leads between the live & neutral connections at t...

  • Page 31

    29 7.10 adjustments the boiler has already been adjusted by the manufacturer during production. If the adjustments need to be made again, for example after extraordinary maintenance, replacement of the gas valve, or conversion from methane gas to lpg, ob- serve the following procedures. The adjustme...

  • Page 32

    30 the boiler is supplied with the adjustments shown in the table. Depending on plant engineering requirements or regional lue gas emission limits it is, however, possible to modify this value, referring to the graphs below. Cos.A. Curve (qnheating) heat output (kw) htg curve (qnheating) heat output...

  • Page 33

    31 8.1 external wiring the appliance comes with a factory itted (ta) link to allow basic operation of the boiler via the mode selector switch. If external controls are to be added to the system, they must be connected to the appliance as shown in the following diagrams. For advice on controls that a...

  • Page 34

    3 2 f u n c t io n a l d ia g r a m f ig . 4 6 akl main pcb dwc digital display p1 selector switch and heating potentiometer p2 dhw potentiometer p3 potentiometer to select temperature regulation curve p4 unused jp1 enabling front setting knob (range rated) jp2 unused jp3 setting (see “setting and a...

  • Page 35

    33 10.1 related documents bs 5440 parts 1 & 2 flues & ventilation requirements bs 5449 part 1 forced circulation of hot water systems bs 5482 part 1 domestic butane & propane gas burners in permament dwellings bs 5546 installation of gas hot water supplies for domestic purposes bs 6798 installation ...

  • Page 36

    34 10.6.2 gas valve maximum setting set the co button at maximum (see 10.3.1), once the maximum is obtained check that it corresponds with the appropriate co 2 value (maximum) for the respective appliance. If the co 2 read- ing is correct, proceed to gas valve minimum setting (10.7.2). However, if t...

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    36.

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    38.

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    39 c o d . 2 0 0 5 2 8 5 4 - 1 2 /1 2 - ed . 2 registered address: vokèra ltd borderlake house unit 7 riverside industrial estate london colney herts al2 1hg enquiries@vokera.Co.Uk www.Vokera.Co.Uk www.Vokera.Ie sales, general enquires t 0844 391 0999 f 0844 391 0998 vokèra ireland west court, calla...