VOKERA Mynute 12e Installation & Servicing Instructions Manual
  1. Manuals
  2. Brands
  3. VOKERA Manuals
  4. Boiler
  5. Mynute 12e
  6. Installation & servicing instructions manual
VOKERA Mynute 12e Installation & Servicing Instructions Manual

VOKERA Mynute 12e Installation & Servicing Instructions Manual

Hide thumbs Also See for Mynute 12e:
Table of Contents

Advertisement

Quick Links

See also: Instructions for Using
Mynute
12e - 16e - 20e
Installation
& Servicing
Instructions
THESE INSTRUCTIONS
TO BE RETAINED
BY USER

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Mynute 12e and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for VOKERA Mynute 12e

Summary of Contents for VOKERA Mynute 12e

  • Page 1 Mynute 12e - 16e - 20e Installation & Servicing Instructions THESE INSTRUCTIONS TO BE RETAINED BY USER...

  • Page 2: Table Of Contents

    ‘Y’ plan using an external programmer 3.A7 Electrical supply ‘S’ plan using an external programmer 3.A8 Showers ‘Y’ plan with Vokera twin channel programmer 3.A9 Mounting on a combustible surface ‘S’ plan with Vokera twin channel programmer 3.A10 Timber framed building Installation of Vokera time clock 3.A11...
  • Page 3 A range rating facility is incorporated in the appliance. annular co-axial combustion air intake that can be rotated – horizontally – through 360 degrees for various horizontal or vertical applications. The Mynute range can also be used with the Vokera twin flue system. Fig.1 General Layout Flue outlet...
  • Page 4 SECTION 1: DESIGN PRINCIPLES AND OPERATING SEQUENCE PRINCIPLE COMPONENTS A fully integrated electronic control board featuring mode switch, temperature control, electronic ignition and flame supervision, anti- cycle control, pump over-run, and appliance fault indicator. Low water content copper heat exchanger. Integral pump Expansion vessel Differential air pressure switch...
  • Page 5 SECTION 2: TECHNICAL DATA 2.1 PERFORMANCE Heat input 13.0 kW 17.7 kW 21.8 kW Heat output (max) 12.0 kW 16.0 kW 19.8 kW Heat output (min) 7.4 kW 12.0 kW 14.0 kW Minimum working pressure 0.5 bar 0.5 bar 0.5 bar Maximum working pressure 3.0 bar 3.0 bar...
  • Page 6 SECTION 2: TECHNICAL DATA 2.10 PUMP DUTY Fig. 3 shows the flow-rate available – after allowing for pressure loss through the appliance – against system pressure loss. When using this graph apply only the pressure loss of the system. The graph is based on a 20ºC temperature differential.
  • Page 7 SECTION 3: GENERAL REQUIREMENTS (UK) This appliance must be installed by a competent GAS SUPPLY person in accordance with the Gas Safety The gas meter – as supplied by the gas supplier (Installation & Use) Regulations. – must be checked to ensure that it is of adequate size to deal with the maximum rated input of all RELATED DOCUMENTS the appliances that it serves.
  • Page 8 SECTION 3: GENERAL REQUIREMENTS (UK) 3.6.1 PIPEWORK 3.6.7 LOW PRESSURE SEALED SYSTEM It is recommended that copper tubing to BS 2871 An alternative method of filling the system would Part 1 is used in conjunction with soldered capillary be from an independent make-up vessel or tank mounted in a position at least 1 metre above the joints.
  • Page 9 SECTION 3: GENERAL REQUIREMENTS (UK) 3.11 INHIBITORS Vokera recommend that a neutral inhibitor is used to protect the heating system from the effects of corrosion and/or electrolytic action. The inhibitor must be administered in strict accordance with the manufacturers* instructions.
  • Page 10 3A.11 INHIBITORS when the system is heated. It can accept up to 6 Vokera recommend that a neutral inhibitor is litres of expansion from within the system, used to protect the heating system from the generally this is sufficient, however if the system effects of corrosion and/or electrolytic action.The...
  • Page 11 Benchmark logbook, guarantee registration vertical flue applications to be considered, card, a 3-amp fuse and flue restrictor ring. alternatively, the Vokera twin flue system can be utilised if longer flue runs are required. UNPACKING At the top of the carton pull both sides open – do 4.5.1...
  • Page 12 SECTION 4: INSTALLATION FITTING THE TELESCOPIC FLUE KIT (0225705 Insert the flue restrictor ring (supplied with & 0225710) instruction pack) into the appliance flue gas outlet if the total flue length is less than 1.0 metre. Carefully measure the distance from the centre of the appliance flue outlet to the face of the outside If the horizontal flue kit (2359029) requires to be wall (dimension ‘X’...

  • Page 13: Concentric Vertical Flue

    4.5.3 TWIN FLUE SYSTEM should now be drilled and plugged, an appropriate The Vokera twin flue system enables greater flue type and quantity of fixing should be used to distances to be achieved (see 2.8) than that of ensure that the bracket is mounted securely.

  • Page 14: Installation Of Twin Adaptor Kit

    SECTION 4: INSTALLATION GUIDANCE NOTES ON TWIN FLUE INSTALLATION Remove the blanking plate (located to the left The flue must have a fall back of 1º back to the of the appliance flue outlet) and – using the appliance to allow any condensate that may same screws –...

  • Page 15: Horizontal Termination

    SECTION 4: INSTALLATION 4.5.3.3 HORIZONTAL TERMINATION (See fig. 12) 4.5.3.4 VERTICAL TERMINATION (See fig. 13) The twin flue system must be converted to the The twin flue system must be converted to the dedicated concentric flue kit for termination. dedicated concentric flue kit for termination. The horizontal terminal is supplied with a built- The vertical terminal is supplied with a built-in in converter box and cannot be shortened.

  • Page 16: Connecting The Gas And Water

    SECTION 4: INSTALLATION CONNECTING THE GAS AND WATER The appliance is supplied with an accessories pack that contains sealing washers and service valves. The service valves are of the compression type. When connecting pipe work to the valves, tighten the compression end first then insert the sealing washers before tightening the valve to the appliance.

  • Page 17: Connecting The Mains (230V) Input

    SECTION 4: INSTALLATION 4.7.3 CONNECTING THE MAINS (230V) INPUT (see Do not remove the link wire (1 - 2) unless addi- fig. 16) tional external controls are to be fitted (see sec- Remove the terminal block cover as described tion 8). Re-fit the appliance terminal block cover. in 4.7.2.

  • Page 18: Gas Supply Installation

    SECTION 5: COMMISSIONING GAS SUPPLY INSTALLATION INITIAL LIGHTING Ensure the electrical supply to the appliance is Inspect the entire installation including the gas switched on. Switch the time clock or programmer meter, test for soundness and purge. Refer to BS to an ‘on’...

  • Page 19: Regulating The Central Heating System

    SECTION 5: COMMISSIONING 5.11 REGULATING THE CENTRAL HEATING SYSTEM Fully open all radiator and circuit valves and run the appliance for both heating and hot water until heated water is circulating. If conditions are warm remove any thermostatic heads. Adjust radiator return valves and any branch circuit return valves until the individual return temperatures are correct and are approximately equal.

  • Page 20: Routine Annual Servicing

    It is the law that any servicing work is carried out appliance or removed component. Undertake a by competent person such as a Vokera engineer, complete commissioning check as detailed in an approved service agent, British Gas, or other section 5, after replacing any component.

  • Page 21: Water Pressure Switch

    SECTION 6: SERVICING WATER PRESSURE SWITCH (see fig. 19) 6.11 HIGH LIMIT THERMOSTAT (see fig. 20) Carry out component removal procedure as Carry out component removal procedure as described in 6.4. described in 6.4. Remove locking pin and the water pressure switch Pull off electrical connections from the high limit from the heating manifold, and –...

  • Page 22: Flue Fan

    SECTION 6: SERVICING 6.15 BURNER, INJECTORS AND SPARK/SENSE 6.16 FLUE FAN (see fig. 23) ELECTRODE (see fig. 22 & 22a) Carry out component removal procedure as Carry out component removal procedure as described in 6.4. described in 6.4. Remove the air chamber cover by un-screwing Locate and remove the air chamber cover (held the six screws which hold the cover, gently pull by 6 screws).

  • Page 23: Air Pressure Switch

    SECTION 6: SERVICING fig. 24 6.18 AIR PRESSURE SWITCH (see fig. 1) Carry out component removal procedure as described in 6.4. Remove the air chamber cover by un-screwing the six screws which hold the cover, gently pull the cover towards you before lifting and disengaging.

  • Page 24: Appliance Mode Of Operation

    SECTION 7: CHECKS, ADJUSTMENTS & FAULT FINDING CHECKING APPLIANCE OPERATION When carrying out any repairs or servicing to the Light the boiler as described in 5.6 and compare appliance, the relevant commissioning procedure the reading on the manometer with the value must be undertaken to ensure the continued safe described in fig.

  • Page 25: External Faults

    SECTION 7: CHECKS, ADJUSTMENTS & FAULT FINDING EXTERNAL FAULTS Before carrying out any fault finding or component replacement, ensure the fault is not attributable to any aspect of the installation. For example, external wiring fault, service valves closed, reversed polarity, gas supply turned off, etc.
  • Page 26 SECTION 7: CHECKS, ADJUSTMENTS & FAULT FINDING THE FOLLOWING CHECKS MUST BE CARRIED OUT BEFORE ATTEMPTING ANY INTERNAL FAULT FINDING: Ensure system pressure is 0.5 bar or above Carry out routine electrical checks Disconnect external controls from appliance and insert link-wire between terminals 1 &...
  • Page 27 SECTION 7: CHECKS, ADJUSTMENTS & FAULT FINDING TEST “A” TEST “B” TEST “C” Mynute...
  • Page 28 SECTION 8: WIRING DIAGRAMS 8.1 “Y” PLAN USING AN EXTERNAL DIAGRAMS Appliance Terminal Strip 230V Supply @ 50Hz Earth Calling Live Satisfied 3 AMP Fuse Neutral Common Cylinder Thermostat Load Wiring Centre or 3-Port Motorised Valve Live Junction Box Room Blue Thermostat Green/Yellow...

  • Page 29: Y' Plan With Vokera Twin Channel Programmer

    SECTION 8: WIRING DIAGRAMS 8.3 “Y” PLAN WITH VOKERA TWIN CHANNEL PROGRAMMER (see 8.6 for instructions) Vokera Twin Channel Programmer HW On HW Off Heating On Heating Off Live Supply Neutral 230V Supply Appliance Terminal Strip 3 AMP Fuse Wiring Centre or Junction Box...

  • Page 30: Installation Of Vokera Time Clock

    SECTION 8: WIRING DIAGRAMS INSTALLATION OF VOKERA TIME CLOCK (24 INSTALLATION OF VOKERA TWIN CHANNEL hour & 7 day versions). PROGRAMMER Isolate the appliance from the electrical supply Isolate the appliance from the electrical supply and remove the casing as described in 4.7.1.
  • Page 31 SECTION 8: WIRING DIAGRAMS R.T. Room thermostat P.S. Pressure switch H.L. High limit switch S.R. Heat thermistor Pump SP\SE E. Spark\Sense electrode Gas valve solenoids I.C.B. Ignition control board B.E.B. Boiler control board Pump triac K3-K4 Fan relays K1-K2 Ignition relays Led alarm (red) D.P.S.
  • Page 32 SECTION 8: WIRING DIAGRAMS NOTE: L-N-E CONNECTION IS ADVISABLE ROOM THERMOSTAT IS 230 V.A.C. Mynute...
  • Page 33 SECTION 9: EXPLODED DIAGRAMS Table 1 Table 1 Mynute 12e - 16e - 20e KEY DESCRIPTION Part no 12e Part no 16e Part no 20e Frame 01005135 01005135 01005135 Guard 10021233 10021233 10021233 Quick primer pressure gauge 2468 2468 2468...

  • Page 34: Table

    SECTION 9: EXPLODED DIAGRAMS Table 2 Table 2 Mynute 12e - 16e - 20e KEY DESCRIPTION Part no 12e Part no 16e Part no 20e Connection 10022658 10022658 10022658 Pressure switch 2044 2044 2044 Heating by-pass valve 2047 2047 2047...

  • Page 35: Table

    SECTION 9: EXPLODED DIAGRAMS Table 3 Table 3 Mynute 12e - 16e - 20e KEY DESCRIPTION Part no 12e Part no 16e Part no 20e 6 lt. expansion vessel 10020839 10020839 10020839 Flexible pipe 2164 2164 2164 Up 15-50 pump...

  • Page 36: Table

    SECTION 9: EXPLODED DIAGRAMS Table 4 Table 4 Mynute 12e - 16e - 20e KEY DESCRIPTION Part no 12e Part no 16e Part no 20e Air bottom box 10021252 10021288 10021288 Ambidx air box side 7832 7824 7824 NG burner NP...

  • Page 37: Table

    SECTION 9: EXPLODED DIAGRAMS Table 5 Table 5 Mynute 12e - 16e - 20e KEY DESCRIPTION Part no 12e Part no 16e Part no 20e Combustion chamber front panel 5962 7818 7818 Lateral panel 5271 5271 5271 Combustion chamber front panel...

  • Page 38: Related Documents

    SECTION 10: LPG INSTRUCTIONS For details of converting boilers to LPG please refer to the instructions supplied with the relevant conversion kit. 10.1 TECHNICAL DATA Inlet pressure (LPG) 37 mbar 37 mbar 37 mbar Maximum burner pressure 27.10 mbar 25.50 mbar 36.30 mbar Gas rate 0.53 m...
  • Page 40 Vokèra Ltd. Floor, Catherine House, Boundary Way, Hemel Hempstead, Herts, HP2 7RP Email: enquiries@vokera.co.uk Web: www.vokera.co.uk Sales, Technical Advice, General Enquiries - Tel: 0870 333 0520 Fax: 01442 281403 After Sales Service - Tel: 0870 333 0220 Vokèra Ireland...

This manual is also suitable for:

Mynute 16eMynute 20e

Table of Contents