Page 1 Installation & Servicing Instructions Baxi Combi 130 HE Gas Fired Wall Mounted Condensing Combination Boiler Please leave these instructions with the user...
Page 2 Product/Production certified by: mean continued success. Notified Body 0086. Ref: 86-BL-647 We hope you get a satisfactory service from Baxi. If not, please let us know. For GB/IE only. Baxi is a BS-EN ISO 9001 Accredited Company...
Page 3: Table Of Contents
Contents Section Page Legislation Introduction General Layout Appliance Operation Technical Data Dimensions and Fixings 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...
Page 4: Legislation
0.0 Legislation IMPORTANT - Installation, Commissioning, Service & Repair Baxi declare that no substances harmful to health are contained in the appliance or used This appliance must be installed in accordance with the manufacturer’s during appliance manufacture. instructions and the regulations in force. Read the instructions fully before installing or using the appliance.
Page 5: Introduction
Description 1. The Baxi Combi 130 HE is a fully automatic gas fired wall mounted condensing combination boiler. It is room sealed and fan assisted, and will serve central heating and mains fed domestic hot water.
Page 6: General Layout
2.0 General Layout Layout Wallplate Flue Elbow Air Box Heat Exchanger Burner Fan Protection Thermostat Fan Assembly DHW Plate Heat Exchanger Three Way Valve Facia Box Primary Water Pressure Gauge Gas Tap Circulation Pump Pressure Relief Valve Return Thermistor Gas/Air Ratio Valve Transformer Flow Temperature Safety Thermostat Flow Temperature Thermistor...
Page 7: Appliance Operation
3.0 Appliance Operation NOTE: All delay timers mentioned in 3.1 and 3.2 are overridden by domestic hot water demand. Central Heating Mode 1. With a demand for heating, the pump circulates water through the primary circuit. At a flow rate of approximately 4.5 l/hr the central heating flow switch operates, initiating the ignition sequence.
Page 8: Technical Data
External Fuse Rating Internal Fuse Rating Pump - Available Head SEDBUK Declaration For Combi 130 HE The efficiency is 90.7% This value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings. The test data from...
Page 9: Dimensions And Fixings
5.0 Dimensions and Fixings SIDE FLUE (left and right) DIMENSIONS 3° For every 1m of horizontal flue (1 in 20) A 850mm length, the clearance above the top of the flue elbow should be B 320mm 55mm to incorporate the 3° (1 in 20) fall in the flue from the C 490mm terminal to the elbow.
Page 10: System Details
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 Combi 130 HE Combination Boiler is an Approved Product under the Water Regulations. To comply with the Water Regulations your attention is drawn to The Water Regulations Advisory Service (WRAS) which gives full details of the requirements.
Page 11: Pressure Relief Valve
Check 3. For optimum operating conditions and maximum Valve Valve Valve economy the fitting of the Baxi Intellistat, is recommended. System Filling and Pressurising 1. A filling point connection on the central heating Temporary return pipework must be provided to facilitate initial...
Page 12 6.0 System Details Other Tap Domestic Hot Water Circuit Outlets 1. All DHW circuits, connections, fittings, etc. Boiler should be fully in accordance with relevant Expansion standards and water supply regulations. Vessel 2.Your attention is drawn to: for GB: Guidance G17 to G24 and recommendation R17 to R24 of the Water Check Regulations Guide.
Page 13: Site Requirements
7.0 Site Requirements Location 1. The boiler may be fitted to any suitable non- flammable wall with the flue passing through an outside wall or roof and discharging to atmosphere in a position permitting satisfactory removal of combustion products and providing an adequate air supply.
Page 14 7.0 Site Requirements 490mm 5mm Min 5mm Min Clearances (Fig. 6 & 7) 1. A flat vertical area is required for the installation of the boiler. 200mm 2. These dimensions include the necessary clearances around the boiler for case removal, spanner access and air movement.
Page 15 7.0 Site Requirements Termination to an internal soil and vent pipe Boiler Condensate Drain FAILURE TO INSTALL THE CONDENSATE DISCHARGE PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE OPERATION OF THE BOILER The condensate discharge pipe MUST NOT RISE at any point along its length. There MUST be a fall of AT LEAST 2.5°...
Page 16 7.0 Site Requirements Flue Terminal Position with Minimum Distance (Fig. 10) (mm) A a Directly below an opening, air brick, opening NOTE: Due to the high efficiency of the boiler windows, etc. a plume of water vapour will be discharged B a Above an opening, air brick, opening window etc.
Page 17 7.0 Site Requirements Flue Dimensions See Section 2.2. The standard horizontal flue kit allows for flue lengths between 270mm and 800mm from elbow to terminal (Fig. 11). The maximum permissible equivalent flue length is: 4 metres horizontal (Fig. 12). NOTE: Each additional 45° of flue bend will account for an equivalent flue length of 0.5m.
Page 18 Installation Guidance Notes for each flue system type. (Documents 243501 and 243502 for concentric and twin pipe respectively). Key Accessory Size Baxi Code Number Concentric Flue System 110mm diameter Horizontal flue kit 850mm 236921 Straight extension kit...
Page 19: Installation
It must be fitted in parallel to the existing pump and in the return pipe. See Pages 24 & 25 for wiring details. Initial Preparation Combi 130 HE The gas supply, gas type and pressure must be TEMPLATE checked for suitability before connection (see...
Page 20 Fig. 16 NOTE: A small amount of water may drain from the boiler in the upright position. Baxi declare that no substances harmful to health are contained in the appliance or used during construction of the appliance. Service Guidance Note Label on inside of panel Fig.
Page 21 Gas connection first to centralise the boiler. The gas sealing washer is an integral part of the gas tap. The Combi 130 HE is designed to operate under nominal water supply conditions. If the Facia Securing Tap Rail...
Page 22 Wall Thickness 8.0 Installation Fitting The Flue 3° Before fitting the flue, check the condensate (1 in 20) drain integrity (see section 8.5). IMPORTANT: The flue should always be installed with a 3° (1 in 20) fall from terminal to elbow, to allow condensate to run back to the boiler.
Page 23 15. If necessary fit a terminal guard (see Gasket Section 7.9). VERTICAL FLUEING Only flues approved with the Baxi Combi 130 HE Boiler can be used. For information on vertical flues consult the Fig. 26 Baxi Combination Boilers Brochure or Notes...
Page 24 8.0 Installation Making The Electrical Connections WARNING: This appliance must be earthed. 1. A plug is supplied with the boiler and the electrical connection is at the rear left hand side Metal Shield of the unit. Plug 2. Remove the electrical plug from the kit pack. Filter 3.
Page 25 8.10 Fitting a Baxi Intellistat Room External Thermostat Timer 1. Refer to the Baxi Intellistat instructions. 2. The boiler installation parameters must be set to Filter Optional Live Feed For recognise that the Intellistat will operate in An External Pump conjunction with the boiler (see section 10.6).
Page 26: Electrical
Schematic Wiring Diagram Primary Fan Overheat Flow Overheat Flow Switch Thermostat Thermostat Display PCB Condensate Trap Fan PCB Flow Return Baxi Intellistat Thermistor Thermistor Terminal Block DHW Flow Grey Switch Ribbon Cable gr gr Transformer Main PCB Flame Detection Electrode...
Page 27 9.0 Electrical Illustrated Wiring Diagram Plug Filter Pump Transformer Electrode Sensing Diverter Valve Electrode Fan Protection Thermostat Return Thermistor Flow Thermistor Gas Valve Main Flow Switch Flow Switch DHW Safety Thermostat Fan PCB Display PCB Condensate Trap Key To Wiring Colours b - Blue r - Red bk - Black...
Page 28: Commissioning The Boiler
Automatic Air Vent 10.0 Commissioning the Boiler 10.1 Commissioning the Boiler NOTE: The information shown on the display is explained on the label on the inside of the lower door panel (see Fig. 48). 1. Open the cold feed to the boiler. 2.
Page 29 10.0 Commissioning the Boiler 10.2 Increasing Central Heating Output To 100,000 Btu/hr 1. The boiler is factory set for a maximum output of 80,000 Btu/hr. The boiler will automatically vary its output to match the system load giving the most efficient use of gas and the most comfortable room temperature possible.
Page 30 10.0 Commissioning the Boiler 10.3 Switching Off Intelligent Pre-heat (cont) 5. To switch the pre-heat feature back on depress the “+” and “-” Temperature Control Buttons at the same time for 5 seconds. The display will show “18 or 10” (Fig. 39). 6.
Page 31 Switching on the Intellistat Fig. 44 Fig. 45 1. For optimum efficiency, this boiler can be controlled Summer/Winter by an optional control accessary, the Baxi Intellistat Mode Button Temperature Temperature (Part No. 247495). To activate the Intellistat, the boiler Control Buttons Control Buttons installer parameter No 6 requires switching from “60”...
Page 32: Fitting The Outer Case
11.0 Fitting the Outer Case 11.1 Fitting The Outer Case 1. Fit the outercase to the appliance ensuring that the four slots in the side flanges align with the hooks on the chassis (Fig. 48). 2. Insert the two fixing screws into the sides of the chassis (Fig.
Page 33: Servicing The Boiler
Hazardous materials are not used in the construction of Baxi products, however reasonable care during service is recommended. 1. For reasons of safety and economy, it is recommended that the boiler is serviced annually.
Page 34 12.0 Servicing the Boiler 12.1 Annual Servicing (Cont) NOTE: The information shown on the display is explained on the label on the inside of the lower door panel (see Fig. 48). Burner 12. To clean the heat exchanger and burner proceed as follows: a) Disconnect the electrical leads to the fan component protection sensor (Fig.
Page 35: Changing Components
Hazardous materials are not used in the Heat Exchanger construction of Baxi products, however Manifold reasonable care during service is recommended. 1. Remove the outer case and lower door panel (see “Fitting the Outercase”...
Page 36 13.0 Changing Components Flowswitch Flow Pipe 13.3 Flowswitch (Fig. 58) 1. Drain the boiler (see Section 13.1 paragraph 2 & 3). 2. It may be necessary to remove the expansion vessel (see Section 13.5). 3. Remove the clip securing the flow pipe to the Clip Fig.
Page 37 13.0 Changing Components The pump, 3-way diverter valve, pressure gauge, pressure relief valve, plate heat exchanger and DHW flow switch can be accessed after hinging down the facia box. 1. Release the facia securing screws ( turn) and hinge down the facia box (Fig. 61). 13.7 Pump (Fig.
Page 38 13.0 Changing Components 13.10 Three-Way Diverter Valve (Head Only) (Fig. 65) If only the head needs replacing: 1. Unplug the wiring harness from the 3-way diverter valve. 2.Depress the clip and revolve the head through 30° and remove. 3. Fit replacement head and reassemble in reverse order.
Page 39 13.0 Changing Components 13.12 Pressure Gauge (Fig. 67) Pressure Gauge Bracket 1. Drain the boiler (see Section 13.1 paragraph 2 & 3). 2. Undo the nut retaining the capillary in the connection at the return pipe (Fig. 68). 3. Depress the two lugs on either side of the pressure gauge and feed through the bracket.
Page 40 13.0 Changing Components 13.14 DHW Plate Heat Exchanger 1. Drain the boiler (see Section 13.1 paragraph 2 & 3). 2. Remove the four screws securing the plate heat exchanger to the manifolds (Fig. 70). NOTE: Ensure nuts are not dislodged from the manifolds.
Page 41 13.0 Changing Components The control, display and fan driver boards can be accessed on the removal of the main electrical box cover. 1. Release the facia securing screws ( turn) and hinge down the facia box. 2. Remove the screws securing the main electrical box cover (Fig.
Page 42 13.0 Changing Components The fan and venturi, gas valve, injector pipe, condensate trap, fan protection thermostat, spark and sensing electrodes can be accessed and changed on the removal of the airbox door panel. 1. Remove the airbox door panel by loosening the four turn screws (Fig.
Page 43 13.0 Changing Components It is necessary to remove the fan before changing the injector pipe, condensate trap and gas valve (see section 13. 21). 13.22 Injector Pipe (Fig. 78) 1. Remove the injector pipe by pulling out from the ‘O’ ring joint in the gas valve. 2.
Page 44 13.0 Changing Components Heat Exchanger The burner and heat exchanger can be Support Bolt changed after removal of the combustion box door. To change the heat exchanger, the fan and burner must be removed first (see section 13. 21 & 13. 25). Burner 1.
Page 45 13.0 Changing Components 13.27 Heat Exchanger Insulation Pads (Fig. 84) 1. Remove the fan and condensate trap (see section 13.21 and 13.24). 2. Remove the burner (see section 13. 25). 3. Remove the four bolts securing the combustion box base. 4.
Page 46: Short Parts List
14.0 Short Parts List Short Parts List G.C. Description Manufacturers Part No. E58 933 Flow Thermistor (Red) / Return Thermistor 240670 E58 912 Safety Thermostat (Black) / Fan Protection 242235 E06 059 Flow Switch Kit 242459 DHW Flow Switch Kit 247502 E58 989 Fan Driver PCB...
Page 47: Fault Finding
Before performing fault finding carry out preliminary electrical checks for earth, continuity and polarity. 15.0 Fault Finding See Section 8.13 NOTE: The information shown on the display is explained on the label on the inside of the outer Go to No Display case (see Fig.
Page 48 No Display 15.0 Fault Finding Ensure that mains is securely connected to incoming plug and that 240 V at A ? wiring from electrical filter to boiler 8-way terminal block is OK. Prog Prog R/S R/S Extra Pump Check wiring from boiler 240 V at B ? 8-way terminal block to PCB is OK.
Page 49 Ignition Lockout 15.0 Fault Finding Gas Valve Plug (when unplugged) Check isolation valve Is there gas at gas valve and gas supply. inlet ? Unplug Gas Valve, Reset Lockout. When the Burner On light is there 215 Vdc at F Replace Gas Valve.
Page 50 Dry-Fire Fault (L7 or L8) 15.0 Fault Finding Plug from PCB to Pump (when unplugged) Is the Fill system with water system full of water ? and bleed out all air. With Unplug water flowing out of a Is there 240V at K? the pump, is there 240V Replace PCB.
Page 51 Fan (L9) 15.0 Fault Finding Is there at Replace Main PCB. least 24Vdc at M ? Transformer Mains Input Flow & Return Thermistors Burner On & Fault Neons When display shows 12 or 22, Overheat Replace Main PCB. Thermostats is there at least &...
Page 52 Flow Temperature Overheat Lockout (Ld) or 15.0 Fault Finding Fan Temperature Overheat Lockout (LE) Display flashing Ld ? Display flashing LE ? Disconnect Disconnect black stat on flow pipe. Fan Stat. Replace stat. When flow < 60° C, is there Replace stat.
Page 53 Condensate Trap (LF) or DHW Flow Switch (Lt) 15.0 Fault Finding Display flashing LF ? Display flashing Lt ? Clear blockage and dry sensors. Fit secondary trap and air break if Unplug connected to internal Condensate Trap 9-way connector from stack/soil pipe.
Page 54 15.0 Fault Finding Burner or Heat Exchanger Noisy Is the Is the noise coming from the noise coming from the burner ? heat exchanger ? Ensure that there is no Is the Burner damaged ? Replace Burner. air in the heat exchanger or system.
Page 55 15.0 Fault Finding DHW Fault Replace DHW Flow Switch. Set to Unplug Unplug summer mode 9-way connector DHW F/S inline (display shows Of). from PCB. With water flowing connector. With water flowing Is DHW Flow Switch With water flowing out of a fully out of a fully open DHW tap is out of a fully open tap is there open DHW tap does...
Page 56 15.0 Fault Finding Central Heating Go to Intellistat Is there an Intellistat section of the fault Is there 240V from Wiring from PCB to connected to the boiler ? finding instructions. Q to R & from R to S ? Diverter Valve faulty.
Page 57 15.0 Fault Finding Intellistat Wiring from boiler to Intellistat faulty. Hinge down the flap below the Intellistat display. Press Is the Intellistat Is there 5V from Is there 5V from the Intellistat Reset Button. Is display blank ? A to B ? D to F ? the display still blank ?
Page 58: Operational Flow Chart
16.0 Operational Flow Chart 16.1 Domestic Hot Water Mode DHW Flow Switch off & Flow temp above 55°C (Overrun done & DHW Flow Switch off) or (DHW Flow Switch off & Flow temp ≥ 55°C). (DHW Flow Switch off & DHW RUN DHW Flow Switch on Flow temp below 55°C &...
Page 59 16.0 Operational Flow Chart 16.2 Central Heating Mode Stabilisation done CH RUN CH STABILISATION Diverter Valve on Diverter Valve on Primary Flow Switch Pump on Pump on not made Fan Speed Variable Fan on Gas Valve on Gas Valve on Programmer off or Flame detected Programmer on &...
Page 60 B A X I P O T T E R T O N A Trading Division of Baxi Heating UK Ltd Brownedge Road Bamber Bridge Preston Lancashire PR5 6SN After Sales Service 08706 096 096 Technical Enquiries 08706 049 049 Website www.baxi.co.uk...

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