Baxi Combi 133 HE Plus Installation & Servicing Instructions Manual
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Baxi Combi 133 HE Plus Installation & Servicing Instructions Manual

Baxi Combi 133 HE Plus Installation & Servicing Instructions Manual

Gas fired wall mounted condensing combination boiler
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Installation & Servicing Instructions
Baxi Combi 133 HE Plus
Baxi Combi 100 HE Plus
Baxi Combi 80 HE Plus
Gas Fired Wall Mounted Condensing

Combination Boiler

These instructions include the Benchmark Commissioning Checklist
and should be left with the user for safe keeping.
© Baxi Heating UK Limited 2005

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Summary of Contents for Baxi Combi 133 HE Plus

  • Page 1: Combination Boiler

    Installation & Servicing Instructions Baxi Combi 133 HE Plus Baxi Combi 100 HE Plus Baxi Combi 80 HE Plus Gas Fired Wall Mounted Condensing Combination Boiler These instructions include the Benchmark Commissioning Checklist and should be left with the user for safe keeping.

  • Page 2: Natural Gas

    Therefore the checklist only applies if the appliance is being installed in a dwelling or some related structure. © Baxi Heating UK Limited 2005 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 Limited 2005...
  • Page 4 Legislation IMPORTANT - Installation, Commissioning, Service & Repair Baxi declare that no substances harmful to health are contained in the appliance or used during appliance This appliance must be installed in accordance with the manufacturer’s instructions and manufacture. the regulations in force. Read the instructions fully before installing or using the appliance.

  • Page 5: Table Of Contents

    System Details Site Requirements Installation Electrical 10.0 Commissioning the Boiler 11.0 Fitting the Outer Case 12.0 Servicing the Boiler 13.0 Changing Components 14.0 Short Parts List 15.0 Fault Finding 16.0 Operational Flow Chart Benchmark Checklist © Baxi Heating UK Limited 2005...

  • Page 6: Introduction

    Description 1. The Baxi Combi HE Plus Range are fully automatic gas fired wall mounted condensing combination boilers. They are room sealed and fan assisted, and will serve central heating and mains fed domestic hot water.

  • Page 7: General Layout

    Vertical Flue Terminal 242802 Vertical Boiler Connection 5106888 VERTICAL FLUE (80/80) Kit Boiler Connection Twin 242757 CONTROL ACCESSORIES RF Programmable Room Thermostat 5117204 Electro-Mechanical Timer 5117493 Filling Loop Kit 5111095 Plume Displacement Kit 5117383 © Baxi Heating UK Limited 2005...

  • Page 8: Appliance Operation

    1. The control system continually monitors the time since the pump last operated. This will result in the pump being run for 1 minute if it has not run in the last 24 hours to prevent seizure. © Baxi Heating UK Limited 2005...

  • Page 9: 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 calculated has been certified by 0086. 2.75 4.625 gal/min © Baxi Heating UK Limited 2005...
  • Page 10 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 calculated has been certified by 0086. 2.75 4.625 gal/min © Baxi Heating UK Limited 2005...
  • Page 11 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 calculated has been certified by 0086. 2.75 4.625 gal/min © Baxi Heating UK Limited 2005...

  • Page 12: Dimensions And Fixings

    4 Central Heating Flow 2 Cold Water Inlet 5 Central Heating Return Tap Rail 3 Gas Supply 6 Pressure Relief 63 mm 62 mm 77 mm 74.5 mm 50 mm Top View of Tap Rail © Baxi Heating UK Limited 2005...

  • Page 13: System Details

    ONLY. In GB it is necessary to comply with the Water Supply (Water Fittings) Regulations 1999 (or for Scotland, The Water Byelaws 2000, Scotland). The Baxi This boiler is fitted with a flow switch interlock that prevents Combi 133, 100, 80 HE Plus Combination Boilers are an Approved Product under it from firing when the heating demand is satisfied.
  • Page 14 3. The discharge must not be above a window, entrance or other public access. Consideration must be given to the possibility that boiling water/steam could discharge from the pipe. © Baxi Heating UK Limited 2005...
  • Page 15 Gas Valve 17 Pressure Gauge DHW Plate Heat Exchanger 18 Pump DHW Flow 19 Pressure Relief Valve DHW Mains Inlet 20 Return Thermistor 10 Flow Regulator 21 3 Way Valve 11 DHW Flow Switch © Baxi Heating UK Limited 2005...

  • Page 16: Site Requirements

    MUST NOT BE REMOVED when the appliance is installed in a compartment or cupboard. Fig. B In GB Only 2. BS 5440: Part 2 Clause 4.2 refers to room sealed appliances installed in compartments. © Baxi Heating UK Limited 2005...
  • Page 17 3° WARNING: The PCB Control and Fan Assembly (1 in 20) is 325 Vdc. Isolate at supply before access. 500mm For Servicing Purposes 320mm In Operation Fig. 7 © Baxi Heating UK Limited 2005...
  • Page 18 & vent pipe ii) via an internal discharge branch (e.g. sink waste) iii) to a drain or gully Holes in the soak-away must iv) to a purpose made soakaway face away from the building © Baxi Heating UK Limited 2005...
  • Page 19 25mm but the flue deflector kit (part no. 248167) must be fitted. 7. If required a suitable terminal guard is available from Baxi for use with the flue deflector. Top View Rear Flue 8. For fitting under low soffits and eaves it is acceptable for the flue to project upto 500mm from the face of Fig.
  • Page 20 Fig. 12 4. The flue terminal guard should be positioned centrally over the terminal and fixed as illustrated. Pictorial examples of flue runs where EQUIVALENT flue length equals 4m Fig. 13 © Baxi Heating UK Limited 2005...
  • Page 21 Universal Vertical Flue Kits Twin flue adaptor kit 242757 Vertical flue terminal 242802 Universal roof tile 25°/50° 243015 Roof cover plate kit 243131 Flat roof flashing 243016BAX Boiler connection vertical concentric 242886 Clamp 80mm 238684 © Baxi Heating UK Limited 2005...

  • Page 22: Installation

    1. Insert a tube into the valve outlet furthest from the filling loop (Fig. 15). 2. Flush thoroughly (see System Details, Section 6.0). Fig. 15 The symbols for each connection are on the support bracket. © Baxi Heating UK Limited 2005...
  • Page 23 NOTE: A small amount of water may drain from the boiler in the upright position. Baxi declare that no substances harmful to health Service Guidance Note Label are contained in the appliance or used during on inside of panel construction of the appliance.
  • Page 24 Return Filter Inlet heat exchanger (Fig. 19) to ensure a seal is made in the trap. Fibre Sealing Gas Connection Washer Central Heating Central Heating Flow Return Pressure Relief © Baxi Heating UK Limited 2005...
  • Page 25 Deburr both tube ends. Fig. 23 IMPORTANT: Check all measurements before cutting. When cutting ensure the cut does not interfere with the inner flue support bracket (Fig. 23). © Baxi Heating UK Limited 2005...
  • Page 26 15. If necessary fit a terminal guard (see Section 7.9). Gasket VERTICAL FLUEING 1. Only a flue approved with the Baxi Combi HE Plus Boiler Range can be used. 2. For information on vertical flues consult the Baxi Flue Guide Brochure or Notes for Guidance supplied with the vertical flue pack.
  • Page 27 1 & 2 and connect the switch circuit (Figs. 28 & 29). Link Wire 3. A cable clamp is provided for incoming cables. For External Controls Fig. 28 External Timer Fig. 29 © Baxi Heating UK Limited 2005...
  • Page 28 5. Fuse Check: Remove the fuse, check fuse on ohm’s scale there should be no resistance (infinity) or maximum reading. If no reading is obtained change the fuse. Check fuse is 3A. Fig. 31 © Baxi Heating UK Limited 2005...

  • Page 29: Electrical

    Key To Wiring Colours b - Blue r - Red bk - Black g - Green gy - Grey g/y- Green/Yellow w - White o - Orange br - Brown y - Yellow op - Opaque © Baxi Heating UK Limited 2005...
  • Page 30 - Opaque Pump Plug Return Filter Thermistor Flow Thermistor Flow Switch Spark Flow Switch Electrode Flame Detection Electrode Main Layout of PCB Pins Condensate Trap Gas Valve Fan Overheat Thermostat Flow Overheat Thermostat Diverter Valve © Baxi Heating UK Limited 2005...

  • Page 31: Commissioning The Boiler

    /h (100 model) 2.5m /h (80 model). WARNING: The PCB Control and Fan Assembly is 325 Vdc. Isolate at supply before Expansion Vessel Fig. 34 access. removed for clarity Inlet Gas Pressure Test Point © Baxi Heating UK Limited 2005...
  • Page 32 At the extreme left hand side of the PCB there are two jumpers. Remove the red one labelled CN12. Facia Box 3. Reassemble in reverse order. PCB Connection Cover Remove the Red Jumper labelled CN12 Fig. 35 © Baxi Heating UK Limited 2005...
  • Page 33 At the the extreme left hand side of the PCB there are two jumpers (one Blue, one Red). Remove both Blue and Red jumpers. 4. Reassemble in reverse order. PCB Connection Cover Remove the Blue & Red Jumpers labelled CN11 & CN12 Fig. 36 © Baxi Heating UK Limited 2005...
  • Page 34 After 10 seconds turn the boiler off at the isolation switch. e) The diverter valve will now be in the central heating position. There is no need to reset the position of the diverter valve after filling. © Baxi Heating UK Limited 2005...

  • Page 35: Fitting The Outer Case

    Conformity” to indicate compliance to I.S. 813. An example of this is given in I.S. 813 “Domestic Gas Installations”. This is in addition to the Benchmark Commissioning Checklist. Outercase Fixing Screws Lower Door Panel Retaining Magnet Fig. 39 © Baxi Heating UK Limited 2005...

  • Page 36: Servicing The Boiler

    Screw Hazardous materials are not used in the construction of Baxi products, however reasonable care during service is recommended. When replacing the combustion box door after servicing it is essential that the retaining screws are tightened fully.
  • Page 37 See section 4.0. Securing Screws Screws 13. Complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of Fig. 44 this publication and then hand it back to the user. © Baxi Heating UK Limited 2005...

  • Page 38: Changing Components

    Manifold Hazardous materials are not used in the construction of Baxi products, however reasonable care during service is recommended. When replacing the combustion box door after changing components, it is essential that the retaining screws are tightened fully.
  • Page 39 Pressurise to 1.0 bar. Expansion Vessel 5. Open the isolating valves and recharge the system to Expansion Vessel between 1.0 bar and 2.5 bar. Vent the system as Securing Screw Fig. 50 necessary. © Baxi Heating UK Limited 2005...
  • Page 40 6 o’clock to the housing. 8. Check that the pump has been switched to setting 3 (Fig. 52) and reconnect the wiring harness plug. Plug Connector Fig. 54 Pump Electrical Cover © Baxi Heating UK Limited 2005...
  • Page 41 Clip order. Wiring Harness Fits Here Fig. 55 Spigot Gasket Wiring Harness Fits Here Three-Way Diverter Valve Fig. 56 © Baxi Heating UK Limited 2005...
  • Page 42 Return Pipe 5. Pull the valve upwards to disengage it. 6. Fit the new pressure relief valve and reassemble in Fig. 58 reverse order. Pressure Relief Valve Fig. 59 Expansion Vessel removed for clarity © Baxi Heating UK Limited 2005...
  • Page 43 ‘O’ Rings front. Plate Heat Plate Heat Exchanger Exchanger Cover 9. Fit the DHW plate heat exchanger. Fig. 61 Flow Switch Clip Inline Electrical Manifold to Pump Connection Clip DHW Inlet Connection Fig. 62 © Baxi Heating UK Limited 2005...
  • Page 44 - see section 10.2 & 10.3. Set the new PCB as the original. 5. Fit the new PCB and reassemble in reverse order. Facia Box Facia Securing Screws Plastic Button Covers PCB Connection Cover Control Knob Fig. 63a Fig. 63 © Baxi Heating UK Limited 2005...
  • Page 45 8. Fit the new fan and reassemble in reverse order. Protection Thermostat The injector pipe, condensate trap and gas valve can Leads be changed after the removal of Wing Nuts the fan. Electrical Supply Fig. 66 © Baxi Heating UK Limited 2005...
  • Page 46 3. Undo the condensate trap lock nut. Locknut 4. Remove the condensate trap from the boiler. Condensate Drain Pipe 5. Disconnect the sensor leads. Fit the new condensate trap and reassemble in reverse Fig. 68 order. © Baxi Heating UK Limited 2005...
  • Page 47 7. Fit the new heat exchanger and reassemble in reverse order. 8. Recommission the boiler and check the inhibitor Heat Exchanger concentration (see Section 6.1 and 10.1). Assembly Fig. 72 © Baxi Heating UK Limited 2005...
  • Page 48 7. Fit the new insulation pads and reassemble in reverse order. Upper Insulation Panel 100 & 80 HE Burner Lower Insulation Panel Burner Combustion Box Base Support Bracket Combustion Box Base Securing Bolts Burner Securing Screws Fig. 73 © Baxi Heating UK Limited 2005...

  • Page 49: Short Parts List

    E58 900 Burner (133 HE) 245199 Burner (100 & 80 HE) 5107430 Electrode Kit 5110992 Plate Heat Exch. Kit 247224 E06 085 Inspection Window Assy 242484 E06 097 Heat Exchanger Assy 242497 Control Knob 5109996 © Baxi Heating UK Limited 2005...

  • Page 50: Fault Finding

    DHW does not. instructions. Go to Flow Thermistor section of the fault finding Lights Flash instructions. Go to CH Fault DHW works but section of the fault finding CH does not. instructions. © Baxi Heating UK Limited 2005...
  • Page 51 Connect Mains to boiler. Check wiring from 240V at B ? terminal block to PCB. Check for shorts on pump, fan & gas valve. PCB fuse OK ? Replace if shorted & replace fuse. Replace PCB. Fuse © Baxi Heating UK Limited 2005...
  • Page 52 ? Remove flow switch from boiler. Is there a physical blockage to the Remove blockage. paddle within the flow switch ? there a blockage in Remove blockage. the system ? Replace flow switch. © Baxi Heating UK Limited 2005...
  • Page 53 3 and 4mm ? wiring from PCB Is the burner to spark probe & flame Replace PCB. blocked or damaged ? detection probe OK ? Clean burner or replace Rectify wiring. as necessary. © Baxi Heating UK Limited 2005...
  • Page 54 (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 Limited 2005...
  • Page 55 5-way connector from PCB. With all DHW taps Replace PCB. off is there continuity across W ? Viewed from Wire Entry end Unblock DHW flow DHW flow switch switch. blocked ? Replace DHW flow switch. © Baxi Heating UK Limited 2005...
  • Page 56 0.5kΩ & 20kΩ ? Viewed from Plug in Wire Entry end thermistor, unplug Wiring from PCB to 8-way PCB connector. return thermistor faulty. Is resistance at U between 0.5kΩ & 20kΩ ? Replace PCB. © Baxi Heating UK Limited 2005...
  • Page 57 7-way PCB connector. Wiring from PCB to Is there 240V from With DHW LED on, is Diverter Valve faulty. A to Z ? there 240V from B to D ? Diverter Valve faulty. PCB faulty. © Baxi Heating UK Limited 2005...
  • Page 58 240V from I to J & from K to J ? Is there Wiring from PCB to 240V from G to N & from G Diverter Valve faulty. to M ? Diverter Valve Plug (when unplugged) PCB faulty. © Baxi Heating UK Limited 2005...
  • Page 59 The boiler can only be reset by manually using the reset button. CH Burner On. Tap or shower off & DHW temperature = set point ? 1 minute Tap or shower Pump Overrun. switched on ? Standby. © Baxi Heating UK Limited 2005...

  • Page 60: Operational Flow Chart

    NOTE: If a tap or shower is switched on during CH Pump Overrun. Burner On then DHW Burner On occurs. If a DHW demand occurs during any other part of CH operation then DHW Purge occurs. 3 minute Anti-cycle. © Baxi Heating UK Limited 2005...
  • Page 61 17.0 Notes © Baxi Heating UK Limited 2005...

  • Page 62: Benchmark Checklist

    CO/CO RATIO THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER THE MANUFACTURER’S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER COMMISSIONING ENG’S NAME PRINT CORGI ID No. SIGN DATE © Baxi Heating UK Limited 2005...

  • Page 63: Service Interval Record

    SIGNATURE SIGNATURE SERVICE 10 SERVICE 9 DATE DATE ENGINEER NAME ENGINEER NAME COMPANY NAME COMPANY NAME TEL No. TEL No. CORGI ID CARD SERIAL No. CORGI ID CARD SERIAL No. COMMENTS COMMENTS SIGNATURE SIGNATURE © Baxi Heating UK Limited 2005...
  • Page 64 Conditions of Sale which are available on request. BAX I A Trading Division of Baxi Heating UK, a division of Baxi Group Brooks House, Coventry Road, Warwick. CV34 4LL After Sales Service 08700 60 30 60 Technical Enquiries 08706 049 049 Website www.baxi.co.uk...

This manual is also suitable for:

Combi 100 he plusCombi 80 he plus

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