Baxi Solo 12 HE Installation And Servicing Instructions
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Baxi Solo 12 HE Installation And Servicing Instructions

Wall mounted powered flue condensing boilers gas fired central heating units
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Installation & Servicing Instructions
Baxi
HE Range
Wall Mounted Powered Flue Condensing Boilers
Gas Fired Central Heating Units
These instructions include the Benchmark Commissioning Checklist and
should be left with the User for safe keeping
© Baxi Heating UK Ltd 2006

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Summary of Contents for Baxi Solo 12 HE

  • Page 1 Installation & Servicing Instructions Baxi HE Range Wall Mounted Powered Flue Condensing Boilers Gas Fired Central Heating Units These instructions include the Benchmark Commissioning Checklist and should be left with the User for safe keeping © Baxi Heating UK Ltd 2006...

  • Page 2: Natural Gas

    The flowchart opposite gives guidance for installers on the © Baxi Heating UK Ltd 2006 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, or stored in any...
  • Page 3 CORGI is written onto the Benchmark Checklist CORGI will record the data and LABC will record the data will send a certificate of and will issue a compliance to the property certificate of compliance © Baxi Heating UK Ltd 2006...
  • Page 4 Notified Body 0087. BS 7074 Expansion vessels and ancillary equipment for sealed water systems. BS 7593 Treatment of water in domestic hot water Product/Production certified by: central heating systems. Notified Body 0086. For GB/IE only. © Baxi Heating UK Ltd 2006...
  • Page 5 If at any time when installing the boiler you feel that you may have injured yourself STOP !! DO NOT ‘work through’ the pain - you may cause further injury. IF IN ANY DOUBT DO NOT HANDLE OR LIFT THE BOILER - OBTAIN ADVICE OR ASSISTANCE BEFORE PROCEEDING !! © Baxi Heating UK Ltd 2006...

  • Page 6: Table Of Contents

    Changing Components 16.0 Short Parts List 17.0 Fault Finding Benchmark Checklist Contents of Pack The pack contains:- • Boiler • Wall Plate • Template & ‘Quick Fit’ Guide • Literature Pack • Fittings Pack © Baxi Heating UK Ltd 2006...

  • Page 7: Introduction

    1. The Baxi Solo HE range are gas fired room sealed fan assisted condensing central heating boilers. 2. The maximum output of the Baxi Solo 12 HE is 40,330 Btu/hr, 15 HE is 52,000 Btu/hr, 18 HE is 60,770 Btu/hr, 24 HE is 75,000 Btu/hr.

  • Page 8: General Layout

    Gas Tap Gas / Air Ratio Valve Flow Pipe Connection Return Pipe Connection Flow Temperature Safety Thermostat - Black Flow Temperature Thermistor - Red Flow Switch (dry fire protection) Fig. 3 Fig. 4 Fig. 6 © Baxi Heating UK Ltd 2006...

  • Page 9: Appliance Operation

    ? 9. Ignition Lockout: The pump, fan, spark generator and gas valve are off. The boiler can only be reset by manually using the reset button. 1 minute Pump Overrun. 3 minute Anti-cycle. © Baxi Heating UK Ltd 2006...

  • Page 10: Technical Data

    This value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings. The test data from which it has been Water Flow Rate (litres/min) calculated has been certified by 0087. © Baxi Heating UK Ltd 2006...

  • Page 11: Dimensions And Fixings

    27.5mm to incorporate the 1.5° fall in the flue from the terminal to the elbow. Flue length (Y) Clearance (X) up to 1m 27.5mm 1m - 2m 55mm 2m - 3m 82.5mm Fig. 8 © Baxi Heating UK Ltd 2006...

  • Page 12: System Details

    (Test kits are available from inhibitor stockists.) • For information or advice regarding any of the above contact Technical Enquiries. © Baxi Heating UK Ltd 2006...
  • Page 13 (e.g. the system is not prone to pumping over, air entrainment etc.) the pump may be 22mm fitted on the primary return pipe. 200mm Feed & Vent Pipe Separator Boiler Pump Flow Return Fig. 12 Alternative Low Head Installation © Baxi Heating UK Ltd 2006...
  • Page 14 Pump must be run from Boiler P/F connection for Part L1 compliance By-pass not permitted (must be valved off) for Part L1 compliance By-pass not permitted (must be valved off) for Part L1 compliance © Baxi Heating UK Ltd 2006...
  • Page 15 All components Valve Valve Valve used in the system must be suitable for operation at 110°C (230°F) and at the pressure allowed by the safety valve. Temporary Hose Mains Return Fig. 14 Inlet © Baxi Heating UK Ltd 2006...

  • Page 16: Site Requirements

    3. Any compartment should be large enough to house the boiler only. NOTE: The ventilation label on the front of the outer Fig. B case MUST NOT BE REMOVED when the appliance is In GB Only installed in a compartment or cupboard. © Baxi Heating UK Ltd 2006...
  • Page 17 3mm in all poles and servicing the boiler and system controls only. WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate at supply before access. 320mm In Operation Fig. 16 © Baxi Heating UK Ltd 2006...
  • Page 18 & vent pipe ii) via an internal discharge branch (e.g. sink waste) 500mm min iii) to a drain or gully iv) to a purpose made soakaway Holes in the soak-away must face away from the building © Baxi Heating UK Ltd 2006...
  • Page 19 (part no. 248167) must be fitted. NOTE: The distance from a fanned draught appliance terminal 7. If required a suitable terminal guard is available from Baxi for installed parallel to a boundary may not be less than 300mm in use with the flue deflector.

  • Page 20: Flue Options

    NOTE: Horizontal flue pipes should always be installed with a 1.5° fall from the terminal to allow condensate to run back to the boiler. This bend is equivalent to 0.5 metre This bend is equivalent to 0.5 metre Total equivalent length (upto 4m) = A+B+2x45°Bends © Baxi Heating UK Ltd 2006...
  • Page 21 This bend is equivalent to Equivalent Length Air Duct = 17.2m 1 metre FLUE DUCT Equivalent Sub total Length Value fittings/pipes 1m extension 10.0m 135°bend 5.2m 2.6m 91.5°bend 19.2m 9.6m Equivalent Length Flue Duct = 34.4m © Baxi Heating UK Ltd 2006...
  • Page 22 Vertical Flue Boiler Adaptor Kit 242757 Pipe Support (pair) 80mm 5111081 FLUE GROUP B,P Vertical Flue Kits Vertical Flue Terminal 242802 Pitched Roof Flashing 25°/50° 243015 Roof Cover Plate 243131 Flat Roof Flashing 243016BAX © Baxi Heating UK Ltd 2006...
  • Page 23 Discard the plate. 2. Fix both the air and flue adaptors with their gaskets onto the boiler top panel. Secure with screws. For Twin Flues Air Duct Adaptor Flue Duct Adaptor Gasket Gasket © Baxi Heating UK Ltd 2006...
  • Page 24 Flue Deflector (Fig. 18a) 1. If required, push the flue deflector over the terminal end and rotate to the optimum angle for deflecting plume. Fig. 19 Secure the deflector to the terminal with screws provided. © Baxi Heating UK Ltd 2006...

  • Page 25: Plume Displacement

    Installation & Outlet Connection Servicing Instructions and BS5440 Pt. 1. It is NOT upwards necessary to fit a terminal guard over the air inlet or the plume outlet. Fig. B © Baxi Heating UK Ltd 2006...
  • Page 26 Additional Accessories that the concentric flue could be up to approximately 3.25 A - 93° Elbow 5117381 metres long. B - 45° Elbow (Pair) 5117382 C - 1 metre 60Ø Extension 5117380 Fig. D © Baxi Heating UK Ltd 2006...
  • Page 27 Fit the 93° elbow and plume outlet. Ensure the plume outlet is at least 45° to the wall and that the ‘peak’ is uppermost. 15. Continue with installation and commissioning of the boiler. © Baxi Heating UK Ltd 2006...
  • Page 28 18. When the plume outlet is positioned under a balcony or other projection (Figs. I & J) it must protrude at least Fig. H 200mm (it is not necessary to extend it further than this). 200mm Min. Fig. I 200mm Min. Fig. J © Baxi Heating UK Ltd 2006...

  • Page 29: Installation

    8. Loosely route the condensate discharge pipe to the for every additional metre to maintain approx 1.5° inclination. lower left hand side of the wall plate. Fig. 21 Centralising Screw Wall Plate Fig. 22 © Baxi Heating UK Ltd 2006...
  • Page 30 1. Remove the outer carton and packaging. 2. Lift the outercase upwards and remove. 3. Remove the internal packaging. Fig. 22a Lower Door Panel Outercase Break Off Upper & Lower Pipe Run Options Fig. 23 © Baxi Heating UK Ltd 2006...
  • Page 31 - Carefully pour approximately 1 cupful (250ml) of water into the flue products exhaust, at the top of the heat exchanger (Fig. 25a) to ensure a seal is made in the trap. © Baxi Heating UK Ltd 2006...
  • Page 32 Deburr both tube ends. IMPORTANT: Check all measurements before cutting. NOTE: When cutting ensure the cut does not Fig. 27a interfere with the inner flue support bracket (Fig. 27a). © Baxi Heating UK Ltd 2006...
  • Page 33 Flue Elbow 13. If necessary fit a terminal guard (see Section 8.8). Gasket VERTICAL FLUEING 1. Only a flue approved with the Baxi Solo HE range can be used. Fig. 30 Flue Trim Fig. 29...
  • Page 34 1. The electrical connections are on the right hand side of the unit. 2. The Baxi Solo 30 HE is factory set to give a maximum output of 22.0 kW (75,000 Btu/hr). The Control PCB jumper positions are as follows:...

  • Page 35: Electrical

    Trap Key To Wiring Colours b - Blue r - Red bk - Black g - Green w - White g/y- Green/Yellow br - Brown op - Opaque gy - Grey y - Yellow © Baxi Heating UK Ltd 2006...
  • Page 36 Fan Overheat Thermostat Flow Overheat Thermostat Wiring Key - Blue bk - Black br - Brown - Red w - White g/y - Green/Yellow - Green gy - Grey op - Opaque - Yellow © Baxi Heating UK Ltd 2006...

  • Page 37: Commissioning The Boiler

    Section 4.0 ‘Technical Data’. WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate at supply before access. DO NOT check gas pressure here Fig. 36 Inlet Gas Pressure Test Point © Baxi Heating UK Ltd 2006...

  • Page 38: Fitting The Outer Case

    10. Complete the label supplied with the inhibitor and stick to the inside of the boiler case. Detail of system Fig. 38 Lower Door Panel treatment must be recorded in the Benchmark Commissioning Checklist. © Baxi Heating UK Ltd 2006...

  • Page 39: Servicing The Boiler

    NOTE: Remove the trap drain plug and place a vessel underneath to catch the condensate (care should be taken as this could be hot). Clean the trap and refit the drain plug. Check for leaks. h) Top of heat exchanger. © Baxi Heating UK Ltd 2006...
  • Page 40 13. Complete the relevant Service Interval Record Securing Screws Burner Securing section of the Benchmark Commissioning Checklist at Screws the rear of this publication and then hand it back to the Fig. 44 user. © Baxi Heating UK Ltd 2006...

  • Page 41: Changing Components

    1. The procedure is the same for both the thermistor and the safety thermostat. 2. Remove the electrical connections from the sensor. 3. Unscrew the sensor from the pipe. 4. Fit the new thermistor or safety thermostat and reassemble in reverse order. © Baxi Heating UK Ltd 2006...
  • Page 42 7. Remove the flowswitch. Flow Switch 8. Fit the new flowswitch and reassemble in reverse order. 9. Recommission the boiler and check the inhibitor concentration (see Section 6.2 and 12.1). Flow Pipe Fig. 47 Clip © Baxi Heating UK Ltd 2006...
  • Page 43 2. Lift Control PCB housing out of hinge housing of Fig. 48 metal bracket. PCB Housing Securing Screw 3. Fit the new PCB Housing Assembly and reassemble in reverse order. Hinge down PCB Housing Blue (CN11) Jumper Red (CN12) Jumper Fig. 49 © Baxi Heating UK Ltd 2006...
  • Page 44 6. Fit the new fan and reassemble in reverse order. Gasket The injector pipe, condensate trap and gas valve can be changed after the removal of the fan. Protection Sensor Venturi Electrical Connections Fig. 52 Electrical Connection Wing Nuts © Baxi Heating UK Ltd 2006...
  • Page 45 Disconnect the sensor leads. Service Drain 4. Fit the new condensate trap and reassemble in reverse Plug Condensate order. Drain Pipe Fig. 54 5. Prime the condensate trap (fill first chamber), check for leaks. © Baxi Heating UK Ltd 2006...
  • Page 46 6. Fit the new heat exchanger and reassemble in reverse order. Fig. 58 7. Recommission the boiler and check the inhibitor concentration (see Section 6.2 and 12.1). Heat Exchanger Manifold Heat Exchanger Assembly Fig. 59 © Baxi Heating UK Ltd 2006...
  • Page 47 5. Remove the combustion box base. Combustion Box Base Securing Screws 6. Pull the central insulation panel down from the Burner Securing centre of the heat exchanger. Screws 7. Fit the new insulation pad and reassemble in reverse order. © Baxi Heating UK Ltd 2006...

  • Page 48: Short Parts List

    E06 060 Safety Thermostat (Black) 242235 5110991 5109925 Gas Valve 241900 E06 085 Viewing Window 242484 Condensate Trap 5111714 Electrodes Kit 5110992 Burner Assy 5107430 E06 097 Heat Exchanger Assy 242497 Control Knob 5109996 © Baxi Heating UK Ltd 2006...

  • Page 49: Fault Finding

    Lights On On Flash PCB Fault Replace PCB. Lights Go to Fan Lockout Flash Flash On section of the fault finding instructions. Lights Flash On On PCB Fault Replace PCB. © Baxi Heating UK Ltd 2006...
  • Page 50 Check wiring from 240V at B ? terminal block to PCB. Optional Pump Live Check for shorts on pump, fan & gas valve. PCB fuse OK ? Replace if shorted & replace fuse. Replace PCB. Fuse © Baxi Heating UK Ltd 2006...
  • Page 51 Live Remove Is there a flow switch from boiler. Replace Flow Switch. Is there a physical blockage to blockage in the system ? the paddle within the flow switch ? Replace Blockage. Replace Blockage. © Baxi Heating UK Ltd 2006...
  • Page 52 3 and 4mm ? Is the wiring from PCB to spark probe & flame burner blocked or Replace PCB. detection probe OK ? damaged ? Clean burner or replace as Rectify wiring. necessary. © Baxi Heating UK Ltd 2006...
  • Page 53 (red sensor on flow pipe). Replace thermistor. Is resistance between 0.5kΩ & 20kΩ ? Replace combustion combustion chamber chamber door seal & trim door seal damaged or not in seal. place ? Replace PCB. © Baxi Heating UK Ltd 2006...
  • Page 54 6-way PCB connector. Is there Rectify wiring. continuity from R to S & from T to U & from V to W ? Viewed from Wire Entry end Replace fan. © Baxi Heating UK Ltd 2006...
  • Page 55 Replace thermistor. 0.5kΩ & 20kΩ ? Plug in thermistor, leave Wiring from PCB to 8-way connector unplugged. thermistor faulty. Viewed from Is resistance at D between 0.5kΩ & 20kΩ ? Wire Entry end Replace PCB. © Baxi Heating UK Ltd 2006...
  • Page 56 18.0 Notes © Baxi Heating UK Ltd 2006...
  • Page 57 18.0 Notes © Baxi Heating UK Ltd 2006...

  • Page 58: Benchmark Checklist

    5 1 2 0 3 0 9 BENCHMARK No. GAS BOILER COMMISSIONING CHECKLIST C O L L E C T I V E M A R K BOILER SERIAL No. NOTIFICATION No. CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes TIME &...

  • Page 59: Boiler

    SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below. Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the boiler manufacturer’s instructions.
  • Page 60 A T r a d i n g D i v i s i o n o f B a x i H e a t i n g U K L t d Brooks House, Coventry Road, Warwick. CV34 4LL After Sales Service 08700 60 30 60 Technical Enquiries 08706 049 049 Website www.baxi.co.uk e&oe ompany © Baxi Heating UK Ltd 2006 Comp N 5120309 - Iss 3 - 7/07...

This manual is also suitable for:

Solo 18 heSolo 15 heSolo 24 heSolo 30 he

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