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- Hydra
- Installation & Servicing Instructions Manual
VOKERA Hydra Installation & Servicing Instructions Manual
Summary of Hydra
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Installation & servicing instructions these instructions to be retained by user.
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Contents design principles & operating sequence page 1.1 principle components 2 1.2 mode of operation (at rest) 2 1.3 domestic hot water mode 2 1.4 central heating mode 2 1.5 safety devices 2 technical data page 2.1 central heating 3 2.2 domestic hot water 3 2.3 gas pressure 3 2.4 expansion vessel 3...
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1 introduction general layout (fig. 1a) 1 auto by-pass 2 safety valve 3 domestic water heat exchanger 4 three port valve actuator 5 condense trap 6 pump 7 return sensor (ntc2) 8 gas valve 9 silicone pressure tube 10 flow sensor (ntc1) 11 auto air vent (aav) 12 flue outlet & air intake 13 flue gas an...
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2 section 1 design principles and operating sequence 1.1 principle components ● a fully integrated electronic control board featuring differential temperature control, continuous air/gas modulation, anti-cycle control, pump over-run, self-diagnostic fault indicator, electronic ignition with flame su...
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3 section 2 technical data ref. Condition 15 ° c, 1013,25 mbar, dry gas note: l.P.G. Data refer to section 10 2.1 central heating heat input (gross) 29.00 kw maximum heat output 60/80 ° c (return & flow temperature) 25.3 kw maximum heat output 30/50 ° c (return & flow temperature) 26.8 kw minimum he...
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4 2.12 pump duty fig. 3 shows the flow rate available – after allowing for pressure loss through the appliance – for system requirements. When using this graph apply only the pressure loss of the system. The graph is based on 20 ºc temperature differential. Fig. 4 fig. 3 water pressure (mh 2 0) litr...
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5 this appliance must be installed by a competent person in accordance with the gas safety (instal- lation & use) regulations. 3.1 related documents the installation of this boiler must be in accord- ance with the relevant requirements of the gas safety (installation & use) regulations, the local bu...
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6 fig. 5 make-up vessel or tank automatic air-vent non-return valve stopcock 5.0 metres minimum heating return 3.5 air supply the following notes are intended for general guidance only. This appliance is a room sealed, fan-flued boiler, consequently it does not require a permanent air vent for combu...
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7 fig. 6b 3.11 condensate disposal when choosing a location for the boiler, consideration should be given to the disposal of the condensate discharge into a suitable drain or soil pipe. The condensate outlet pipe must be connected to the drain in accordance with building regulations or other rules i...
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8 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 buildin...
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9 3a.6.4 air release points these must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete filling of the system. 3a.6.5 expansion vessel the appliance has an integral expansion vessel to accommodate the inc...
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10 section 4 installation 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 content...
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11 the flue bend to the boiler top adaptor and insert the concentric flue pipe into the flue bend ensuring the correct seal is made. Using the clamp, gasket and screws supplied, secure the flue bend to the appliance flue spigot. Note you must ensure that the entire flue system is properly supported ...
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12 using the dimensions given in fig. 8 as a reference, mark and cut a 105 mm hole in the ceiling and/or roof. Important you must ensure that the terminal is at least 300 mm from any structure or surface (fig. 8). The vertical flue terminal is 1.0 metre in length and cannot be cut; therefore it may ...
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13 connects to the exhaust connection on the concentric to twin converter. If necessary cut the plain ends (male) of the twin flue pipes to allow connection to the concentric to twin converter. Note before cutting twin flue pipes ensure allowances have been made for connection onto the previous piec...
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14 4.6.5 hot water outlet (fig. 6a & 6b) the appliance is supplied with a 15 mm female connector. Connect a 15 mm pipe to the supplied connector and tighten the nut. 4.7 condensate outlet (fig. 6b) during normal operation the boiler produces condensate which is collected in a trap located in the low...
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15 4.9.3 vokera time clock the vokera time clock (part no. 201 & 202) can be installed using the following procedure: ● isolate the appliance from the electrical supply and remove the casing as described in 4.9.1 ● gain access to the electrical input board as detailed in 4.9.2. ● remove the square b...
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16 5.1 gas supply installation inspect the entire installation including the gas meter, test for soundness and purge. 5.2 the heating system the appliance contains components that may become damaged or rendered inoperable by oils and/or debris that are residual from the installation of the system, c...
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17 however the remaining parameters (5 – 42) can only be accessed after entering the relevant service code, and should only be adjusted by qualified service personnel. 5.10 parameters 1 - 4 parameters 1 - 4, are used to alter or adjust the settings for central heating and domestic hot water. Use the...
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18 5.15 final checks ● ensure all test nipples on the appliance gas valve are tight and have been checked for soundness. ● ensure the appliance flue system is fitted correctly and is properly secured. ● ensure all pipe work is re-checked for soundness. ● re-fit appliance casing. ● complete appliance...
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19 section 6 servicing instructions 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. The frequency of servicing will depend upon the particular installation conditions, but in general, once per ...
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20 6.9 ntc thermistors (temperature sensors) carry out component removal procedure as de- scribed in section 6.4. Cold water inlet sensor (fig. 20) disconnet thermistor electrical plug. Using a 13 mm spanner slacken and remove the thermistor and sealing washer. Replace in the reverse order. Flow & r...
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21 6.14 electrode (fig. 24 & 25) carry out component removal procedure as de- scribed in section 6.4. Unclip and remove the air chamber cover. Remove the electrode lead. Remove the 2 screws that secure the electrode to the combustion cover, and gently withdraw the electrode. Replace in the reverse o...
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22 fig. 29 6.21 combustion cover (fig. 30) carry out component removal procedure as described in section 6.4. Unclip and remove the air chamber cover. Remove the gas valve as described in section 6.11. Remove the condense pressure switch as described in section 6.20. Disconnect the electrical connec...
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23 fig. 31 screws rear frame fig. 32 input pcb status pcb 6.22.1 expansion vessel (removal, fig. 31) carry out component removal procedure as described in section 6.4. Disconnect the flue from the appliance. Disconnect the expansion vessel from the expansion pipe. Remove the flow sensor as shown in ...
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24 7.1 checking appliance operation when carrying out any repairs or servicing to the appliance, the relevant commissioning and/or set-up procedure must be undertaken to ensure the continued safe operation of the appliance. Particular attention should be made to ensure gas soundness, water soundness...
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25 service parameters must only be changed or adjusted by qualified service personnel parameter 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 description minimum setting for flow sensor minimum setting for external sensor maximum setting...
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26 code b 18 b 19 b 24 b 25 b 26 b 28 b 29 b 30 b 65 reason flow sensor above 95 ° c return sensor above 95 ° c temperature differential inverted excessive temperature rise condensate trap blocked no signal from fan incorrect signal from fan temperature differential exceeded insufficient fan speed f...
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27 7.8 diagnostic recall in addition to displaying a fault code, the appliance memorises the operating conditions at the time of lockout, this information can be recalled and displayed using the following procedure: ● access the appliance service mode as detailed in section 7.3 ● press the mode butt...
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28 7.12.3 fault finding test ‘1’ m2 m3 fault no display, boiler inactive no display, valve actuator working (press reset to test) no display, pump running no display, pump running, fan speed alternating no display, boiler working ok pump failure fan fault ignition fault go to test 1 test 1a test 1a ...
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29 7.12.4 fault finding test ‘1a’.
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30 7.12.5 fault finding test ‘2’.
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31 7.12.6 fault finding test ‘3’.
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32 7.12.7 fault finding test ‘4’.
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33 section 8 wiring diagrams fig. 34 8.1 important the hydra boiler utilises 24v switching. Any external controls that are directly connected to the boiler must be suitable for 24v applications and shall be voltage free. Under no circumstances should a 230v supply be connected to plug m7. 8.2 extern...
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34 functional diagram note. L-n-e connection must not be interchanged key r.T. Room thermostat f fan p pump s1 flow thermistor (ntc) s2 return thermistor (ntc) s3 dhw thermistor (ntc) be04 connection board mcba control board l1 led dhw mode l2 (v) led ok fig. 35 l2 (r) led alarm l3 led ch mode f1 fu...
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35 note. L-n-e connection must not be interchanged control switching of time clock and room thermostat rated is 24 v.A.C. Functional diagram fig. 36.
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36 pcb display pcb display pcb display pcb pcb gas valve fan condense pressure switch flow sensor return sensor pump external transformer cold water inlet sensor external sensor (if fitted) actuator 24v connection for time clock or room thermostat relay for actuator status led plug or connection ope...
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37 section 9 exploded diagrams pos. Description code 1 frame 01005243 12 quick primer pressure gauge 1857 13 pin 10023044 15 cover 10023681 16 2 a 5x20 inline fuse 8968 17 3.15 a 5x20 inline fuse 8969 18 printed circuit board cover 10021849 20 printed circuit board 10023479 21 led light guide 100235...
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38 pos. Description code 1 domestic water heat exchanger 10023482 2 heat exchanger-pipe connection 8432 3 pressure switch 10022556 4 non return valve 2908 7 heating bypass valve 2047 9 heating distributor manifold 10020439 10 3 port valve spring 6862 11 3 way valve overhaul kit 01005127 15 seating p...
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39 pos. Description code 1 expansion vessel 2573 2 flexible pipe 2164 3 pump 8876 4 pump cable 10023573 5 brass nut 10022444 6 pipe 10023574 8 heat exchanger 8884 9 pipe 10023575 10 pipe 10023576 12 washer 9287 16 air vent bottle+cock assembly 9806 25 siphon 10024112 26 pipe 10023530 27 pipe 1002357...
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40 pos. Description code 1 roomsealed chamber 10023486 2 upper panel for air box 8881 3 main burner jet support 1195 4 main burner 1196 5 spark electrode kit 01005242 12 gas pipe 10022442 13 gas valve 10022441 14 pipe 10023578 15 gas cock connection 1787 16 front panel for air box 1035 17 glass kit ...
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41 pos. Description code 2 exchanger lower insulation panel 1193 4 exchanger upper insulation panel 1016 5 clip 10021115 6 cover for heat exchanger 1033 10 fan 10022853 13 pressure connection 8915 14 pressure connection 8916 20 connection 8908 22 washer 8912 23 plug 8909 40 screw 1006 41 screw 9292 ...
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42 section 10 l.P.G. Instructions 10.3 gas supply the gas supply must be connected to the appliance by a competent lpg installer and must be of sufficient size to supply the appliance at its maximum output. An existing supply must be checked to ensure that it is of adequate size to deal with the max...
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Notes.
Page 48: Energizing Home Heating
Vokèra ltd. 4 th floor, catherine house, boundary way, hemel hempstead, herts, hp2 7rp email: enquiries@vokera.Co.Uk web: www.Vokera.Co.Uk general enquiries - tel: 01442 281400 fax: 01442 281460 technical advice - tel: 0141 945 6810 spare parts - tel: 0141 945 6820 after sales service - tel: 0870 33...