Baxi Neta-tec Combi GA Range Installation & Servicing Instructions Manual
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Baxi Neta-tec Combi GA Range Installation & Servicing Instructions Manual

Neta-tec combi ga range gas fired wall mounted condensing combination boiler
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See also: Technical Manual
Installation & Servicing Instructions
Neta-tec Combi GA Range
Gas Fired Wall Mounted Condensing
Combination Boiler
These instructions include the Benchmark Commissioning Checklist
and should be left with the user for safe keeping.
They must be read in conjunction with the Flue Installation Guide.
© Baxi Heating UK Ltd 2012

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  • Page 1 Gas Fired Wall Mounted Condensing Combination Boiler These instructions include the Benchmark Commissioning Checklist and should be left with the user for safe keeping. They must be read in conjunction with the Flue Installation Guide. © Baxi Heating UK Ltd 2012...
  • Page 2 UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency. © Baxi Heating UK Ltd 2012 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: Installer Notification Guidelines

    Benchmark Checklist ‘Gas Safe Register’ will issue a LABC will record the data Building Regulations Compliance and will issue a Certificate to the property owner certificate of compliance and inform the relevant LABC © Baxi Heating UK Ltd 2012...
  • Page 4 BS EN 14336 Installation & commissioning of water based heating systems. BS 7074 Expansion vessels and ancillary equipment for sealed water systems. BS 7593 Treatment of water in domestic hot water central heating systems. © Baxi Heating UK Ltd 2012...
  • 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 2012...

  • Page 6: Table Of Contents

    Commissioning 11.0 Completion & System Draining 12.0 Servicing 13.0 Changing Components 14.0 Combustion & Calibration 15.0 Electrical 16.0 Short Parts List 17.0 Fault Finding & ‘Service Due’ 18.0 Optional Outdoor Sensor s Benchmark Checklist © Baxi Heating UK Ltd 2012...

  • Page 7: Introduction

    1.0 Introduction Description 1. The Baxi Neta-tec Combi GA 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. 2. The boiler is set to give a maximum output of :- 24 models - 24 kW DHW 21.2 kW CH (Condensing)

  • Page 8: General Layout

    Spark Ignition Electrode Combustion Box Cover & Burner Control Box Display Condensate Trap Safety Pressure Relief Valve Gas Valve Diverter Valve Motor Boiler Control Optional Timer Boiler Drain Tap Heating Flow Sensor Safety Thermostat © Baxi Heating UK Ltd 2012...

  • Page 9: Appliance Operation

    1 minute to prevent A – Condensate Drain sticking. B – Heating Flow C – Domestic Hot Water Outlet D – Gas Inlet E – Cold Water Inlet On/Off Valve and filter F – Heating Return © Baxi Heating UK Ltd 2012...

  • Page 10: Technical Data

    0087. Power Consumption 24 model 28 model 33 model NOTE: All data in this section are nominal values and subject to normal production tolerances. 1000 1200 © Baxi Heating UK Ltd 2012 Flow Rate (l/h)

  • Page 11: Dimensions And Fixings

    Drain Relief Valve (15mm) 40 mm 65 mm 65 mm 65 mm 65 mm 65 mm 162,5 mm Heating Hot Water Cold Water Heating Flow Outlet Inlet Inlet Return (22mm) (15mm) (22mm) (15mm) (22mm) © Baxi Heating UK Ltd 2012...

  • Page 12: System Details

    6.0 System Details Information 1. The Baxi Neta-tec Combi GA Condensing Combination Boiler is a ‘Water Byelaws Scheme - Approved Product’. To comply with the Water Byelaws your attention is drawn to the following installation requirements and notes (IRN). a) IRN 001 - See text of entry for installation requirements and notes.
  • Page 13 5. A boiler discharge pump is available, part no. 720648301. Pressure Relief Valve This pump will dispose of both condensate & high temperature Discharge Pipe water from the relief valve. It has a maximum head of 5 metres. © Baxi Heating UK Ltd 2012...
  • Page 14 Fittings are intended to be used in the DHW therefore all pipework, connections, fittings, etc. should be system connected to a Baxi Neta-tec Combi GA suitable for pressures in excess of 8 bar. A pressure reducing it is strongly recommended that the DHW flow rate DOES NOT fall below 2.5l/min.

  • Page 15: Site Requirements

    2. BS 5440: Part 2 refers to room sealed appliances installed in compartments. The appliance will run sufficiently cool without ventilation. 5mm Min 300mm (290mm with flap removed) In Operation Fig. 9 © Baxi Heating UK Ltd 2012...
  • Page 16 In IE reference should be made to the current edition of I.S. Window Recess 813 “Domestic Gas Installations” and the current ETCI Zone 2 Outside Zones rules. 2.25 m Zone 1 Zone 2 Zone 0 0.6 m Fig. B In GB Only © Baxi Heating UK Ltd 2012...
  • Page 17 *It is NOT RECOMMENDED to connect upstream of the sink or other waste water receptacle ! © Baxi Heating UK Ltd 2012...
  • Page 18 45° iv) Termination to a purpose made soakaway Further specific requirements for soakaway Boiler design are referred to in BS 6798. 500mm min Holes in the soak-away must face away from the building © Baxi Heating UK Ltd 2012...
  • Page 19 Boiler External runs & those in unheated locations still require insulation. Condensate Pump Pipe must terminate above water level but below surrounding surface. Cut end at 45° © Baxi Heating UK Ltd 2012...
  • Page 20 (see Top View Rear Flue Fig. 13). Fig. 11 Property Boundary Line Air Inlet Opening Window or Door 150mm Fig. 13 MIN. Likely flue positions requiring Fig. 12 a flue terminal guard © Baxi Heating UK Ltd 2012...

  • Page 21: Flue Options

    This bend is equivalent to 1 metre (ii) This bend is equivalent to 1 metre Total equivalent length = A+B+C+2 x 90° Bends © Baxi Heating UK Ltd 2012...
  • Page 22 Secure the deflector to the terminal with screws provided. Flue Accessories 1. For full details of Flue Accessories (elbows, extensions, clamps etc.) refer to the Flue Installation Guide supplied in the literature pack. © Baxi Heating UK Ltd 2012...

  • Page 23: Installation

    2. Make the flow and return connections to the isolation taps. Fig. 19 Flush the system thoroughly to remove all impurities (see Flushing Tube System Details, Section 6.2). Heating Flow Fig. 20 Heating Return © Baxi Heating UK Ltd 2007...
  • Page 24 3. The boiler condensate trap should be primed by pouring Outlet Pipe approximately 300ml of water into the flue spigot. Do not Fig. 23 Rubber Hose allow any water to fall into the air inlet. © Baxi Heating UK Ltd 2012...
  • Page 25 9. Using the clearance holes in the Connection Assembly secure it to the Terminal Assembly using the screws supplied (Fig. 28). Fig. 26 ‘TOP’ Label Securing Screw Sealing Tape Fig. 28 Fig. 27 ‘TOP’ Label © Baxi Heating UK Ltd 2012...
  • Page 26 13. Make good between the wall and air duct outside the building, appropriate to the wall construction and fire rating. 14. If necessary fit a terminal guard (see Section 8.4). Fig. 30 Fig. 30 Slots at bottom Slots at bottom Fig. 31 Fig. 31 © Baxi Heating UK Ltd 2012...
  • Page 27 NOTE: The 230V switched signal for external controls (Frost Stat - Room Stat - Timer) must always be taken from terminal 2 at the boiler. Live, Neutral and Earth to power these controls must be taken from the Fused Spur. © Baxi Heating UK Ltd 2012...

  • Page 28: Commissioning

    6 seconds. If a gas supply fault occurs • The integrity of the boiler combustion circuit and the must be pressed before & relevant seals. Proceed to put the boiler into operation as follows: © Baxi Heating UK Ltd 2012...
  • Page 29 . Press 4. Press to select the value that corresponds with the required gas type. For Natural Gas:- For Propane:- 5. Press to save the change, then to return to the normal display. © Baxi Heating UK Ltd 2012...

  • Page 30: Completion & System Draining

    & hot water. This will purge air from the system. The display will show 5. Once De-Aeration is complete set the external controls as required by the user. © Baxi Heating UK Ltd 2012...

  • Page 31: Servicing

    4. Disconnect the condensate drain pipe and unscrew the sump from the bottom of the condensate trap assembly (Fig. 44). Remove any deposits from the sump and trap. Clean as necessary and replace the sump. © Baxi Heating UK Ltd 2012...
  • Page 32 17. Complete the relevant Service Interval Record section of Filter the Benchmark Commissioning Checklist at the rear of this Cartridge publication and then hand it back to the user. View underneath Clip appliance Fig. 48 Fig. 47 Inlet/Return Manifold DHW Isolation Cock © Baxi Heating UK Ltd 2012...

This manual is also suitable for:

Neta-tec plus combi ga rangeNeta-tec combi 24 gaNeta-tec combi 28 gaNeta-tec combi 33 ga

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