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Summary of Contents for VOKERA VISION C
- Page 1 Vision C High eficiency combi boiler 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.
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Page 2: Table Of Contents
Users instructions Things you should know Page Installation Page Gas appliances Delivery Electrical supply Contents Guarantee registration card Unpacking Appliance Log Book (UK only) Preparation for mounting the appliance Fitting the lue How does it work? Dimensions Connecting the gas & water Clearances required Electrical connections Frost protection system... -
Page 3: Users Instructions
USERS INSTRUCTIONS INTRODUCTION Dear Customer Your Vokèra Vision boiler has been designed to meet and exceed the very latest standards in gas central heating technology, and if cared for, will give years of reliable use and eficiency. Please therefore take some time to read these instructions carefully. Do’s and Don’t’s - Do ensure that the system pressure is periodically checked - Do ensure that the boiler should not be used by children or unassisted disabled people... -
Page 4: Pressure Gauge
Fig. 1 DIGITAL WEEKLY CLOCK AND BOILER STATUS DISPLAY HOT WATER TEMPERATURE CLOCK SETTING SELECTOR PRESSURE GAUGE BUTTONS MODE SELECTOR SWITCH HEATING TEMPERATURE SELECTOR 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... - Page 5 DIGITAL WEEKLY CLOCK Fig. 2 Symbol/Icon Description/Function Button/Icon Main Function Secondary Function Used to show current day of week Used to set/adjust (lashing) time of day, and day of week Displayed when the ADVANCE-ON fun- ction is active Use to “advance” Use to increase values when Displayed when the ADVANCE-OFF fun- the heating to an...
- Page 6 BUILT-IN CLOCK 1.4 CHANGING THE HEATING PATTERN The Vision 25C & 30C incorporate a built-in digital clock and The built-in clock is pre-programmed with a default heating multi-inf mative LCD display. pattern (see Fig.1), however this can be changed to a user deined heating pattern.
- Page 7 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: •...
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Page 8: Getting Started Page
2. GETTING STARTED 2.1 BEFORE SWITCHING ON appliance reaches the CH set temperature, the burner will go Before switching the appliance on, please familiarise yourself off for a minimum period of approximately 3 minutes. with: When the programmer/time clock or external thermostats - how to isolate the appliance from the gas, water, and electricity heating request has been satisied, the appliance will switch supplies;... -
Page 9: What If
FAULT CODES ALARM CODE CAUSE ALARM TYPE ACTION AUTOSTOP Final Call engineer CALL FOR SERVICE Temporary then Call engineer Final Ignition failure, lame not sensed, Final Reset, check appliance operation internal fault Limit thermostat fault Final Reset, check appliance operation Fan tacho signal fault Final Reset check appliance operation,... -
Page 10: Installation And Servicing Instructions
INSTALLATION AND SERVICING INSTRUCTIONS INTRODUCTION The Vision is approved for use with C13 & C33 type lue ap- The Vision comprises a range of high-eficiency combination plications. boilers with outputs to DHW of 25kW and 29kW respectively. These appliances are designed for use with a sealed system These appliances –... -
Page 11: Principle Components
SECTION 1 - DESIGN PRINCIPLES AND OPERATING SEQUENCE 1.1 PRINCIPLE COMPONENTS • A fully integrated electronic control board featuring electronic 1.5 SAFETY DEVICES • a water pressure switch that monitors system water pressure temperature control, anti-cycle control, pump over-run, self- When the appliance is in use, safe operation is ensured by: •... -
Page 12: Central Heating
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: Eficiency
Below an opening or window on a pitched roof 2000 mm From a vertical terminal to an adjacent opening (window, air-brick, etc.) (call Vokera technical for advice) From a vertical terminal to an adjacent vertical terminal 300 mm (only if both terminals are the same hight) -
Page 14: Related Documents
SECTION 3 - GENERAL REQUIREMENTS (UK) This appliance must be installed by a competent person in ac- BS 5440 Part 1, when the terminal is 0.5 metres (or less) below cordance with the Gas Safety (Installation & Use) Regulations. plastic guttering or 1 metre (or less) below painted eaves. 3.1 RELATED DOCUMENTS 3.5 AIR SUPPLY The installation of this boiler must be in accordance with the... -
Page 15: Electrical Supply
3.6.8 FREQUENT FILLING 3.11 SHOWERS Frequent illing or venting of the system may be indicative If the appliance is intended for use with a shower, the shower of a leak. Care should be taken during the installation of the must be thermostatically controlled and be suitable for use with appliance to ensure all aspects of the system are capable of a combination boiler. -
Page 16: Air Supply
3A.7 ELECTRICAL SUPPLY the terminal must be protected by a guard of durable material. The guard must be itted centrally over the terminal. Refer to The appliance is supplied for operation on 230V @ 50Hz electri- I.S. 813, when the terminal is 0.5 metres (or less) below plastic cal supply;... -
Page 17: Delivery
SECTION 4 - INSTALLATION 4.1 DELIVERY 29450127 2000m extension 2000mm 29450128 Telescopic extension 372/519mm Due to the weight of the appliance it may be necessary for Wall bracket pack (5) 208mm two people to lift and attach the appliance to its mounting. The appliance is contained within a heavy-duty cardboard carton. - Page 18 4.5.1.2 FITTING THE REAR FLUE (ig. 15) (rear lue outlet only) Using the template provided, mark and drill a 125mm hole for the passage of the lue pipe. The hole should be drilled LEVEL to ensure any condense luid that forms, is allowed to drain back to the appliance.
- Page 19 IMPORTANT 4.5.2 CONCENTRIC VERTICAL FLUE The vertical lue terminal is 1.0 metre in length and cannot be The appliance can be used with either the Vokèra condensing 60/100mm concentric lue system or the optional 80/125mm cut; therefore it may be necessary to adjust the height of the concentric lue system.
- Page 20 INSTALLATION OF TWIN ADAPTOR KIT (ig. 19 & 20) • Insert the exhaust connection manifold (A) onto the appliance NOTE Seal the lue terminal assembly to the wall using cement or a lue outlet. • Remove the blanking plate (located to the left of the appliance suitable alternative that will provide satisfactory weatherproof- ing.
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Page 21: Connecting The Gas & Water
4.6 CONNECTING THE GAS AND WATER Hot water outlet Fig. 23 The appliance is supplied with an accessory pack that includes cock service valves. The service valves are of the compression type. Cold water inlet The accessory pack contains sealing washers’ etc, for use with stopcock the service valves. -
Page 22: Gas Supply Installation
SECTION 5 - COMMISSIONING • ensure the 3 AMP fuse – supplied with the appliance – has 5.1 GAS SUPPLY INSTALLATION been itted; • ensure the system has been illed, vented and the pressure Inspect the entire installation including the gas meter, test for tightness and purge. -
Page 23: Regulating The Central Heating System
• by completing the warranty registration card and posting to in several ways: 5.12 FINAL CHECKS • ENSURE ALL TEST NIPPLES ON THE APPLIANCE GAS • online at: vokera.co.uk us using the envelope supplied • ENSURE THE APPLIANCE FLUE SYSTEM IS FITTED VALVE ARE TIGHT AND CHECKED FOR TIGHTNESS. -
Page 24: Pump Assembly
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 section 5, after replacing any component. ALWAYS TEST FOR GAS TIGHTNESS IF ANY GAS CARRYING COMPONENTS HAVE BEEN REMOVED OR DISTURBED. -
Page 25: Gas Valve
from the PCB, locate and remove the PCB securing screws, remove the required PCB. Replace in the reverse order ensur- ing that the position of the 2 control knobs are correctly aligned with the respective potentiometers on the PCB. Ensure that the correct jumper tag coniguration has been respected. -
Page 26: Main Heat Exchanger
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 the fan assembly (B1), (if necessary unscrew the gas pipe from the gas valve G1). -
Page 27: Flue Collector Removal
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 point cover (Z1). Disconnect the lues thermistor wiring connections. -
Page 28: Checking Appliance Operation
SECTION 7 - CHECKS, ADJUSTMENTS AND FAULT FINDING 7.1 CHECKING APPLIANCE OPERATION temperature will fall whereby fan speed will increase relative to the output required. When the boiler has reached the set point When carrying out any repairs or servicing to the appliance, (+ hysterisis), the burner will switch off. -
Page 29: Combustion Analysis Test
7.3.1 CO FUNCTION SETTINGS Locate the CO button (see 7.3) Select the main selector switch in position FUNCTIONS ACTION ON THE BUTTON DISPLAY combustion analysis mode press once = burner running at maximum heating gas valve maximun setting press twice = burner running at maximum DHW gas valve minimum setting press three time = burner running at minimum NOTE... -
Page 30: Fault Inding
the fault. A visual inspection of components may also assist in COMPONENT VALUES & CHARACTERIS- locating the fault. TICS 7.7.3 POLARITY CHECK COMPONENT VALUE With the appliance connected to the electrical supply and us- 230Vac • connect test leads between the Live & Neutral connections ing a suitable multimeter, carry out the following voltage tests: Pump 230Vac... -
Page 31: Adjustments
7.10 ADJUSTMENTS The boiler has already been adjusted by the manufacturer - Press the “combustion analysis” button a second time to during production. If the adjustments need to be made again, reach the number of rotations corresponding to the maxi- for example after extraordinary maintenance, replacement of mum domestic hot water output (table 1) the gas valve, or conversion from methane gas to LPG, ob-... - Page 32 Vision 25C 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. HTG curve (Qnheating) COs.a.
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Page 33: External Wiring
CLIMATIC CURVES EXTERNAL TEMPERATURE (°C) T80 Maximum set point for standard T range (JP7 removed) T45 Maximum set point for low T range (JP7 inserted) SECTION 8 - WIRING DIAGRAMS 8.1 EXTERNAL WIRING The appliance comes with a factory itted (TA) link to allow NOTE: Use contacts free of voltage basic operation of the boiler via the mode selector switch. - Page 34 TSC2 Fuse 3.15A F Spark Room thermostat electrode GAS VALVE (24 Vdc) blue black blue CN15 CN12 black CN13 white CN14 pink F Lv 1 2 3 4 5 3.15A T F Hv CN10 F.T. R.S. −t° −t° F.O.HT. F.S. CN11 −t°...
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Page 35: Related Documents
SECTION 10 - LPG INSTRUCTIONS 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... - Page 36 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 value (Maximum) for the respective appliance. If the CO read- ing is correct, proceed to gas valve minimum setting (10.7.2). However, if the CO reading is incorrect, the maximum gas • using a 2.5mm Allen key, very slowly turn the maximum ad-...
- Page 40 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 056 7755057 F 056 7755060 Vokèra Limited reserve the right to change...
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