VOKERA AquaFlow User Manual
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VOKERA AquaFlow User Manual

VOKERA AquaFlow User Manual

Single coil water cyliner
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AquaFlow
Single coil water cyliner
Supplied By www.heating spares.co Tel. 0161 620 6677
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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Summary of Contents for VOKERA AquaFlow

  • Page 1 AquaFlow Single coil water cyliner 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.

  • Page 2: Health And Safety

    * Temperature and pressure relief valve. Installation details The Vokera unvented unit is designed for use with supply pressure up to 16 bar. For pressures over 16 bar an additional pressure reducing valve must be fitted in the supply pipe to the unit. Wall mounting brackets are available for Vokera Aquaflow unvented units 120-200 litres capacity.
  • Page 3 General Layout Fig: 1 RESET RESET RESET RESET INDIRECT Part No Part No Flow BSPF * Flexible Hose 202108 Return BSPF * Secondary Return ½”BSPF Fit ½"Fx½"Mx15mm Tee piece (Not supplied) Pressure Reducing Valve 510503 Commisioning Valve / Fitting 250440 Includes Item 4 (½"...

  • Page 4: Cold Water Supply

    COLD WATER SUPPLY To obtain the best performance from your Aquaflow unvented system it is advisable to feed the unit with an uninterrupted supply. Locate the water heater in a suitable position to facilitate the installation of the cold water supply, discharge fittings and pipework.
  • Page 5 Expansion Vessel 18. Connect the expansion vessel (supplied) to the cylinder as shown in the diagram below. The vessel should be charged/pressurised to the same pressure as the PRV (Pressure Reducing Valve). COMMISSIONING Filling up 1. Close all hot water taps. 2.

  • Page 6: Installation And Servicing Instructions

    Draining Switch off the electrical power off (Important to avoid damage to element). Isolate boiler from Aquaflow unit. Turn off the cold water supply valve. Open hot water tap. Open drain (13). The unit will drain. SAFETY AND MAINTAINANCE Safety Cut-out 1.

  • Page 7: Installation

    Installation 1. Cold water supply to be 22 mm nominal size. 2. Flush supply pipework before connection to remove all flux and debris prior to fitting the inlet controls. Failure to do this may result in irreparable damage to the controls and will invalidate the warranty.

  • Page 8: Immersion Heaters

    To comply with regulations governing the installation of indirect unvented cylinders, a motorised valve must be fitted in the primary flow. Your Aquaflow unit has been supplied with a two port motorised valve, which will act as a positive energy cut-out should the safety cut-out operate. The motorised valve will also control the temperature of the domestic stored water via the cylinder thermostat, which is located in the electrical box.
  • Page 9 2/2A).If using a 6-wire 28mm or 1” BSP V4043H on either circuit the white wire is not needed and must be made electrically safe. Vokera can not be responsible if alternative wiring plans are used. Important: Before resetting the safety cut-out or altering the thermostat setting isolate electrical supply to the unit before removal of the lid.
  • Page 10 S Plan System Schematic Y Plan Wiring Layout Refer to the wiring diagrams contained within the boiler installation instructions for the wirng of ’Y’- Plan systems. Connect the cylinder thermostat as shown in the diagram below NOTE A 10 way junction box must be used on the Y plan system. Supplied By www.heating spares.co Tel.
  • Page 11 Y Plan System Schematic AQUAFLOW FAULT FINDING GUIDE FAULT POSSIBLE CAUSE REMEDY No water flow from hot taps Mains supply off. Check and open stopcock. -10- Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 12 Strainer blocked. Turn off water supply. Remove strainer and clean. (See Pressure Reducing Valve page 6 Installation Manual) Cold water inlet Pressure Check and refit as required.(see item Reducing Valve incorrectly 3 page 5 of installation manual) fitted. Water from hot taps is cold. Immersion heaters not Check and switch on.
  • Page 13 AQUAFLOW FAULT FINDING GUIDE -12- Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 14 -13- Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 15 -14- Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 16 Notes: -15- Supplied By www.heating spares.co Tel. 0161 620 6677...

  • Page 17: Secondary Return

    Commisioning Valve Non Return Valve Circulation Pump Secondary Return Line Balanced cold supply for showers or bidet only. All replacement parts must be supplied by Vokera. To obtain the address of a local stockist contact: Vokera Ltd. www.vokera.co.uk. Catherine House...
  • Page 18 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 391 099 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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