1. DL manuals
  2. VOKERA
  3. Water Heater
  4. Compact A
  5. User Instructions

VOKERA Compact A User Instructions

Summary of Compact A

  • 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. Compact a high efficiency combi boiler.

  • Page 2

    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 getting ...

  • Page 3: Users Instructions

    1 users instructions 1.1 gas appliances gas safety (installations and use) regulations (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 boiler status led green led boiler is working/responding to a heating/hot water request red led boiler has identified a fault and has failed-safe. Refer to instructions on how to reset yellow led service operation dhw temperature selector move the selector clockwise to increase the hot wate...

  • Page 5

    3 2.1 before switching on before switching the appliance on, please familiarise yourself with: - how to isolate the appliance from the gas, water, and elec- tricity supplies; - how to check and top-up – if necessary – the system water pressure; - the time clock or programmer (if fitted); - any exter...

  • Page 6

    4 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 office. 4.2 what if i have frequently to top-up the system if the system regularly...

  • Page 7

    5 the compact comprises a range of high-efficiency combination boilers with outputs to dhw of 25kw and 30kw respectively. These appliances – by design – incorporate electronic ignition, circulating pump, expansion vessel, safety valve, pressure gauge and automatic by-pass. The compact range is produ...

  • Page 8

    6 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 flame supervision • integral high-head...

  • Page 9

    7 2.1 central heating compact 25 compact 29 heat input (kw) 20.00 25 maximum heat output (kw) 60/80°c 19.50 24.40 minimum working pressure 0.5 bar maximum working pressure 2.7 bar minimum flow rate 350 l/h 2.2 domestic hot water compact 25 compact 29 heat input (kw) 25.00 29.50 flow rate: Δt35 o c 1...

  • Page 10

    8 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 g...

  • Page 11

    9 section 3 - general requirements (uk) this appliance must be installed by a competent person in accordance 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 (installatio...

  • Page 12

    10 this appliance must be installed by a competent person in accordance with and defined by, the standard specification (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 buildi...

  • Page 13

    11 terminal must be protected by a guard of durable material. The guard must be fitted 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 gene...

  • Page 14

    12 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 floor with the writing the correct way up. 4.2 contents contained wit...

  • Page 15

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

  • Page 16

    14 important the vertical flue terminal is 1.0 metre in length and cannot be cut; therefore it may be necessary to adjust the height of the appliance to suit or use a suitable extension. Connect the vertical flue assembly to the boiler flue spigot using the 100mm clip, gasket & screws (supplied), en...

  • Page 17

    15 pushed 50mm onto the male spigots of the concentric to twin converter. Note seal the flue terminal assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproofing. The interior and exterior trim can now be fitted. Vertical termination (fig. 15) the twin ...

  • Page 18

    16 4.6.5 safety valve (fig. 16) connect the safety valve connection pipe to the safety valve outlet. Connect a discharge pipe to the other end of the safety valve connection pipe and tighten. The discharge pipe must have a continuous fall away from the appliance to outside and allow any water to dra...

  • Page 19

    17 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 specific instruction. 5.2 the heating system the appliance contains components that may become damaged or rendered inoperable by oils and/or de...

  • Page 20

    18 6.1 general to ensure the continued safe and efficient operation of the appliance, 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 compo- nent be replaced only with a genuine vok...

  • Page 21

    19 6.5 pump assembly (fig. 21) carry out component removal procedure as described in 6.4. Disconnect and remove the pump outlet pipe (a) from the pump assembly/combustion chamber connection. Remove the expansion pipe locking pin (b) from the top of the pump assembly and withdraw the flexible pipe. L...

  • Page 22

    20 6.14 flue fan & mixer (fig. 28-29) 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 g1...

  • Page 23

    21 fig. 29 a1 b1 g1 m1 n1 o1 p1 j1 fig. 30 q1 t1 s1 r1 fig. 32 fig. 31 w1 v1 u1 6.16 main heat exchanger (fig. 29) 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 th...

  • Page 24

    22 6.20.3 valve actuator (fig. 35) carry out component removal procedure as described in 6.4. Remove the locking pin (g2) that secures the actuator (h2) to the heating manifold. Disconnect the electrical plug from the actuator. Replace in the reverse order. 6.20.4 dhw thermistor (fig. 24) carry out ...

  • Page 25

    23 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 flue gas analyser to read co 2 and in...

  • Page 26

    24 fig. 37 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 27

    25 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 may also assist in locating the fault. 7.7.3 polarity check with the appliance connected to the electrical supply and usin...

  • Page 28

    26 8.1 external wiring the appliance comes with a factory fitted (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 dia- grams. For advice on controls tha...

  • Page 29

    27 functional diagram fig. 41 note: l-n-e connection is advisable a k l main pcb p 1 selector switch and heating potentiometer p 2 dhw potentiometer p3 unused p4 unused jp1 unused jp2 unused jp3 unused jp4 unused jp5 unused jp6 unused jp7 unused j p 8 closed - unused l e d led 1 (green) working stat...

  • Page 30

    28 section 9 - exploded diagrams pos. Description 25 29 2 frame assembly 20011411 20011411 12 quick primer pressure gauge 20005580 20005580 18 control panel cover 20026055 20026055 20 printed circuit board 20025735 20025735 21 led light guide 20013352 20013352 26 instrumental panel 20026048 20026080...

  • Page 31

    29 table 2 pos. Description 25 29 1 exchanger r8036 r8037 2 connection r10030114 r10030114 4 non return valve r10025056 r10025056 6 by-pass casing r10024641 r10024641 7 heating by-pass valve 20007783 20007783 9 3-way heating manifold and cartridge 20021496 20021496 10 cartridge 20017597 20017597 11 ...

  • Page 32

    30 table 3 pos. Description 25 29 1 expansion vessel 20024419 20024419 2 pipe r10028603 r10028603 3 pump r10027571 r10027571 7 pipe 20025763 20025763 8 exchanger assembly 20025765 20026081 9 pipe 20025764 20025764 10 pipe 20025744 20025744 17 air vent valve 20019768 20019768 25 siphon 20025733 20025...

  • Page 33

    31 table 4 pos. Description 25 29 3 fan 20002995 20002995 4 burner assembly 20026061 20026079 5 ignition electrode 20025737 20025737 12 pipe 20025745 20025745 13 gas valve 20025752 20025752 14 gas pipe 20005553 20005553 15 3/4" gas cock r2266 r2266 16 combustion chamber cover 20005594 20005594 18 pl...

  • Page 34

    32 table 5 pos. Description 25 29 7 conveyor 20026060 20026060 12 flue drain connection r10028421 r10028421 20 outlet nut 20026049 20026049 26 plug 20026058 20026058 75 flue cllector 20026056 20026056 370 o ring r10023533 r10023533 487 washer Ø 60 r10026345 r10026345 552 washer Ø 60 r10028426 r10028...

  • 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 reading is correct, proceed to gas valve minimum setting (10.7.2). However, if the...

  • Page 40

    Cod. 20020792 - 04/10 - ed. 0 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, callan co kilkenny t 0...