Baxi 2nd Fix Solar Manual
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Baxi 2nd Fix Solar Manual

Baxi 2nd Fix Solar Manual

Solar thermal domestic hot water system
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2nd Fix Solar Manual
Please read these instructions before installing or commissioning.
This Solar Thermal Domestic Hot Water System should only be
installed by a competent person.
PLEASE LEAVE THESE INSTRUCTIONS WITH THE
USER FOR SAFE KEEPING.
© Baxi Heating UK 2012

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  • Page 1 2nd Fix Solar Manual Please read these instructions before installing or commissioning. This Solar Thermal Domestic Hot Water System should only be installed by a competent person. PLEASE LEAVE THESE INSTRUCTIONS WITH THE USER FOR SAFE KEEPING. © Baxi Heating UK 2012...
  • Page 2 Setting the system flow rate Checking and adjusting the flow rate © Baxi Heating UK Ltd 2012. All rights reserved. No part of this publication may be reproduced or Installation of the thermal insulation transmitted in any form or by any means, or stored in any retrieval system of any nature (including in...

  • Page 3: Introduction To Solar

    The optional cylinders that can be supplied with the package provide a supplementary heat exchanger coil and immersion heater as standard. Fig. 2 © Baxi Heating UK 2012...
  • Page 4 68W / 65W Setting 3: 90W / 85W Maximum Pump Head: 6 metres Maximum Pump Capacity: 4.5 m3/h / 3.5 m3/h Flow meter scale: 2 to 15 l/min Fig. 3 System Module Fig. 4 Cascade Module © Baxi Heating UK 2012...

  • Page 5: Differential Temperature Controller

    Self explanatory, menu driven operation Adjustable control values System monitoring Energy yield, (solar gain) measurement Suitable for flat plate and evacuated tube type collectors Reheat thermostat function Can be used in a number of system configurations © Baxi Heating UK 2012...

  • Page 6: Ancillary Components

    10. The fluid is supplied in 20litre container. Weight of container full - 21kg. 11. Systems found to have low glycol concentrations will not be covered by the warranty. © Baxi Heating UK 2012...

  • Page 7: Cylinder Specifications

    Building Regulation G3. Anode Not required. For full technical and performance specification see cylinder installation instructions. The cylinders are unvented so installation must comply with Building Regulation G3 and / or other local regulatory requirements. © Baxi Heating UK 2012...
  • Page 8 DHW systems. For installation and specification details refer to the manufacturers instructions supplied with the solar cylinder. Any system installed using an unvented cylinder must comply with Building Regulations G3 and/or other Local Regulations. © Baxi Heating UK 2012...

  • Page 9: Safety Information

    © Baxi Heating UK 2012...
  • Page 10 This is not an exclusive list and so you should consider all aspects of the proposed installation to assess whether there are additional risks that need to be taken into account. © Baxi Heating UK 2012...
  • Page 11 22mm compression fitting nut and olive(4 off). Sensor extension cable (13m) (not shown). Ancillary component carton: Solar expansion vessel complete with mounting bracket and strap assembly. Expansion vessel connecting hose. Expansion vessel self sealing connection. © Baxi Heating UK 2012...

  • Page 12: Identification Of Components

    (Fig. 10). 3. The hydraulic station has a solar differential temperature controller (Fig. 10 Item 6) integrated into the front insulation moulding. This is pre-wired to the solar pump. © Baxi Heating UK 2012...
  • Page 13 No. 5131963) should be installed between the pump station and expansion vessel. 8. Earthing pipework All solar primary pipework between the solar collectors, hydraulic station and solar cylinder should be earth bonded in accordance with current IEE wiring regulations.; © Baxi Heating UK 2012...
  • Page 14 The collectors are supplied with 2x2m pre insulated flexible stainless steel tubes. Additional lengths (30m) of stainless steel flexible tubes and high temperature insulation can be supplied. See Section 7.3 for Key © Baxi Heating UK 2012...
  • Page 15 4. Drill and plug the mounting positions and screw the mounting brackets into position. 5. Push the rear insulation moulding over the wall brackets and refit the hydraulic assembly (Fig 14. Item 6) to the mounting clips on the wall brackets. © Baxi Heating UK 2012...

  • Page 16: Connecting Pipework

    3. Connecting the solar cylinder Fig. 18 Return to hydraulic station For detailed installation instructions refer to the installation instructions supplied with the solar cylinder. Return from cylinder Flow to cylinder © Baxi Heating UK 2012...

  • Page 17: Commissioning Of System

    (see Fig. 20). Use a suitable container of a large enough volume to collect the fluid. 10. When satisfied that all pipework and component parts have been thoroughly flushed, the system can be filled. © Baxi Heating UK 2012...
  • Page 18 20. Turn the right hand isolating valve (Fig. 19 Item 5) back 90° clockwise until the dot on the bezel is back at 12:00 O’clock. 21. Turn the slot of the adjusting screw (Fig. 19 Item 3) back to the horizontal position. © Baxi Heating UK 2012...

  • Page 19: Installation Of Solar Controller

    2. No tools are required to open the controller. The front of the controller is secured by two latches which engage with the controller backplate. 3. It can be opened by gently pulling the lower side edges outwards and then hinging the front upwards. © Baxi Heating UK 2012...

  • Page 20: Electrical Connection Overview

    Solar differential 6. All switch outputs (A1, A2 and A3) are 230/240V~ closers. If controller potential-free contacts are needed, appropriate accessories are required. Solar coil Double pole over-temp isolating switch cut-out 230V/240V~ Mains supply © Baxi Heating UK 2012...
  • Page 21 1 collector array, 1 storage cylinder Tret 1 collector array, 2 storage cylinders Tret 2 collector arrays, 1 storage cylinder Tret NOTE: The solar gain flowmeter must be connected to sensor terminals marked T7 where fitted (see Fig. 23). © Baxi Heating UK 2012...
  • Page 22 Terminal Box (Not supplied) Relay See Fig. 23 Solar Differential Controller Solar Pump Solar Pump 2 Solar O/Temp Cutout Auxiliary Immersion Heater Relay Immersion Heater © Baxi Heating UK 2012...
  • Page 23 Solar O/Temp Cutout Solar Pump 2 equipment. 4. Baxi accept no liability for any loss or damage arising from any errors or omissions that may be inadvertently contained Auxiliary heating by boiler with 3 port mid position valve system within these diagrams.

  • Page 24: Commissioning Of Hydraulic Station

    & drain valve on the safety group (Fig. 27 Item 2) needs to be opened for this purpose. When system pressure is correctly set, ensure the fill and drain valve is closed and remove filling hose from safety group. © Baxi Heating UK 2012...

  • Page 25: Commissioning Of Solar Controller

    Item 5 - Scroll right - select to edit the function displayed. The selected function will flash if it is available for editing. Use 2 to increase the required value and 4 to reduce it. Use 5 to OK. © Baxi Heating UK 2012...
  • Page 26 25 °C * Only displayed if temperature sensor fitted (not supplied as standard). Operating hours for charging storage tank(s). Resettable to 0 h. 1234 h Energy productivity for storage tank(s). Resettable to 0 h. 927 kWh © Baxi Heating UK 2012...
  • Page 27 Press efficient and problem free operation. However Baxi recommend appears, the following parameters marked * must be left at the default settings. Any change to the Baxi recommended settings will invalidate the warranty. press to confirm and disappears.
  • Page 28 Switching on/off switch output A2 (pump2/valve1) by hand. 0 = off 1 = on Switching on/off switch output A3 (cooling, thermostat or 2 temperature difference controller function) by hand. 0 = off 1 = on © Baxi Heating UK 2012...
  • Page 29 15 -- Independent controller reference sensor 1 - 6 16 -- System diagram 0 - 4 For correct operation of the system, Baxi Anro Tyfocor L5.5 - supplied recommend the settings shown above. IIexan E, Glythermin Dowcal 10 Antifrogen L...

  • Page 30: Graphic Symbol

    Appears when switch output 3 is active (on) Reference to system fault Display flashes when a fault occurs in the system Input value can be either Safety query for value changes which are to be stored rejected or accepted © Baxi Heating UK 2012...
  • Page 31 5 x 7 segment display. Display of all values, display flashes when Presentation of figures 00000 to 99999 a value is changed ºC Temperature in Celsius Temperature difference in Kelvin Operating hours Productivity indication in kWh © Baxi Heating UK 2012...

  • Page 32: General Controller Functions

    If the heating requirement for the higher priority cylinder is fulfilled then the lower priority cylinder will be heated. 3. The higher priority cylinder can be selected in the “Basic Adjustment” menu point no. 10. © Baxi Heating UK 2012...
  • Page 33 Corresponding values in menu “Basic adjustment” “Programming” 14 -- 1 Start temperature max ºC 15 -- 5 Hysteresis dT in K Time period (1…3) Start: min time Time period (1…3) Stop: max time © Baxi Heating UK 2012...
  • Page 34 Indication Meaning Short circuit on temperature sensor of the current measuring point Break on temperature sensor of the current measuring point, circulation error at activated energy productivity measurement © Baxi Heating UK 2012...
  • Page 35 +5K is reached. The minimum runtime of the pump is 5 minutes. 3. For safety reasons the function is deactivated if the temperature of the priority storage falls below 5ºC. © Baxi Heating UK 2012...
  • Page 36 1. When the storage tank is being charged by a pump, the operating hours meter records for each separate pump. The number of operating hours can be read in the “info” menu. This may be reset to ‘0’. Corresponding values in menu “Programming” “info” XXXX h © Baxi Heating UK 2012...
  • Page 37 1. Refit the controller mounting moulding (Fig. 37 Item 1) onto the rear moulding. 2. Push the front thermal insulation (Fig. 37 Item 2) against the rear thermal insulation section (Fig. 37 Item 3) until it clips into place. © Baxi Heating UK 2012...
  • Page 38 Solar Cylinder System type type 0 Time control in secs Cylinder installed and commissioned in ❑ Storage priority accordance with cylinder installation instructions * Baxi recommends these settings are left at the default value. © Baxi Heating UK 2012...
  • Page 39 © Baxi Heating UK 2012...
  • Page 40 © Baxi Heating UK 2012...

  • Page 41: Maintenance

    2. In areas where there may be a build up of dirt on the collector, only non-abrasive cleaning materials and methods should be used to clean the collectors and mounting system components. 13.3 Cylinder 1. Refer to manufacturer’s documentation. © Baxi Heating UK 2012...

  • Page 42: Fault Finding

    Additionally at energy productivity measurement: • Sensor wire broken • Check wire • Sensor defect • Check sensor resistance, if necessary exchange sensor • Sensor missing • Check parameter settings and sensor installation requirements © Baxi Heating UK 2012...
  • Page 43 1347 resetting 1385 1461 1535 Is the 230/240V~ 1758 power supply at the controller Check wiring and rectify terminal block Is internal Replace internal fuse fuse operational Controller fault Replace controller © Baxi Heating UK 2012...
  • Page 44 Use shielded cable to extend been lengthened with sensor cable lengths unshielded cable Do sensors give Are sensor correct temperature connections correctly Rectify sensor connections made resistance readings Controller fault Sensor fault Replace sensor Replace controller © Baxi Heating UK 2012...
  • Page 45 1. A number of Spare Parts are available should any part of the system require replacement. Use only genuine parts obtained from Baxi, use of other non Baxi parts may cause system malfunctions and will invalidate the warranty. Fitting of any spare parts must be carried out by a competent installer or authorised service engineer or agent.

  • Page 46: Warranty

    6. The warranty will become invalid if the failure is due to frost damage (see point 5), transient voltages, lightning strikes or any act of vandalism or misuse. © Baxi Heating UK 2012...
  • Page 47 9. The installation must be in an appropriate location and its use is restricted to potable water. 10. Baxi Heating UK Ltd will only carry out warranty repair/replacement to Solarflo collectors which have safe access and that meet current Health & Safety working at heights requirements.
  • Page 48 All goods are sold subject to our standard Conditions of Sale which are available on request. B AXI A Trading Division of Baxi Heating UK Ltd (3879156), Brooks House, Coventry Road, Warwick. CV34 4LL Technical Enquiries 0844 871 1568 Our contact centre is open Monday to Friday 8am to 6pm, Weekends and Bank Holidays 8.30am to 2pm.

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