Baxi Genesis 80 Installation And Servicing Instructions
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Baxi Genesis 80 Installation And Servicing Instructions

Baxi Genesis 80 Installation And Servicing Instructions

Gas fired wall mounted combination boiler
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Baxi Genesis
Gas Fired Wall Mounted Combination Boiler
Natural Gas, Propane & Butane
o
Comp N
. 236463 - 10/96
o
Baxi Genesis 80 – G.C.N
o
Baxi Genesis 96 – G.C.N
42 - 43
Supplied By www.heating spares.co Tel. 0161 620 6677
47 077 01
47 077 02
Please leave these Instructions with the User
Installation
and
Servicing
Instructions

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Summary of Contents for Baxi Genesis 80

  • Page 1: Servicing Instructions

    Please leave these Instructions with the User Baxi Genesis Gas Fired Wall Mounted Combination Boiler Natural Gas, Propane & Butane Comp N . 236463 - 10/96 Baxi Genesis 80 – G.C.N 47 077 01 Baxi Genesis 96 – G.C.N 47 077 02 Installation Servicing...
  • Page 2 Everyone who works at the company has a commitment to quality because, as shareholders, we know that satisfied customers mean continued success. We hope you get a satisfactory service from Baxi. If not, please let us know Baxi is a BS-EN ISO 9002 Accredited Company 44 - 45 Supplied By www.heating spares.co Tel.

  • Page 3: Table Of Contents

    Genesis Baxi Heating Ltd. Contents – Page 3 PAGE 4 Introduction General Layout PAGE 5 Appliance Operation PAGE 6 PAGE 7-8 Technical Data General Dimensions & Fixings PAGE 9 PAGE 10-12 System Details Central Heating circuit Bypass System Control System Filling & Pressurising...
  • Page 4 Baxi Heating Ltd. Introduction – Page 4 Description The Baxi Genesis is a fully automatic gas fired wall mounted combination boiler. It is room sealed and fan assisted, and will serve central heating and mains fed domestic hot water. Genesis 80 The boiler is preset to give a maximum output of 23.25 kW...
  • Page 5 Genesis Baxi Heating Ltd. General Layout – Page 5 Chassis with Expansion Vessel Combustion Box Fan Assembly Primary Heat Exchanger Combustion Chamber Burner Assembly and Electrodes Gas Valve Assembly Automatic Air Seperator and Vent Flow Switch Heating Circuit Flow Switch DHW Circuit...
  • Page 6 Genesis Baxi Heating Ltd. Appliance Operation – Page 6 CENTRAL HEATING MODE With a demand for heating the pump (11) circulates water through the primary circuit. At a flow rate of approximately 250 I/hr the central heating flow switch (9) operates, commencing the ignition sequence.
  • Page 7 Genesis Baxi Heating Ltd. Technical Data – Page 7 GENESIS 80 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 8 Genesis Baxi Heating Ltd. Technical Data – Page 8 GENESIS 96 44 - 45 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 9 Genesis Baxi Heating Ltd. General Dimensions and Fixings – Page 9 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 10 For optimum operating conditions and best economy the fitting of a programmable thermostat is recommended. Programmable thermostats - the ‘Baxi Genesis Controllers’ are available as an optional extra. 44 - 45 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 11 Genesis Baxi Heating Ltd. SYSTEM DETAILS – Page 11 A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement/refilling. The filling method adopted must be in accordance with all relevant water supply byelaws using approved equipment.
  • Page 12 Genesis Baxi Heating Ltd. SYSTEM DETAILS – Page 12 Domestic Hot Water Circuit All DHW circuits, connections, fittings etc should be fully in accordance with relevant standards and water supply bye-laws. Your attention is drawn to: IRN 116 and Byelaw 90 and 91.

  • Page 13: B.s. Codes Of Practice

    WARNING The addition of anything that may interfere with the normal operation of the appliance without the express written permission of Baxi Heating could invalidate the appliance warranty and infringe the GAS SAFETY (Installation and Use) REGULATIONS. Clearances A flat vertical area is required for the installation of the boiler.

  • Page 14: Ventilation Of Compartments

    Genesis Baxi Heating Ltd. SITE REQUIREMENTS – Page 14 Ventilation of Compartments Where the appliance is installed in a cupboard or compartment, air vents are required (for cooling purposes) in the cupboard or compartment at high and low level which may communicate with a room or direct to outside air.

  • Page 15: Flue

    Flue An internal fitting kit is available for installations where the flue terminal is inaccessible from the outside. -(Part No 236441). This is available from merchants or direct from Baxi free of charge. The following guidelines indicate the general requirements for siting balanced flue terminals.

  • Page 16: Terminal Guard

    Genesis Baxi Heating Ltd. SITE REQUIREMENTS – Page 16 Flue Dimensions The standard flue supplied with the appliance is suitable for use with flue lengths between 220mm (8 21/32in) and 610mm (24in). TOTAL FLUE LENGTH PERMISSIBLE IS: 3 METRES MAX.

  • Page 17: Initial Preparation

    Genesis Baxi Heating Ltd. Installation – Page 17 Initial Preparation Remove the fixing template from the small carton. After considering the site requirements (see page 13) position the template on the wall. Mark the position of the fixing holes for the two hooks. Use the upper two holes where possible.

  • Page 18: Preparing The Boiler

    Genesis Baxi Heating Ltd. INSTALLATION – Page 18 Preparing The Boiler Follow the sequence depicted on the carton to unpack the boiler. Remove the lower cover poly bag assembly and contents kit before laying the boiler on its back supported by the polystyrene block.

  • Page 19: Fitting The Boiler

    Genesis Baxi Heating Ltd. INSTALLATION – Page 19 Fitting The Boiler Lift the boiler using the lower edge of the combustion box and the hand holds in the chassis. Place boiler on the support bracket, slide back then lift to engage on top hooks.

  • Page 20: Fitting The Flue

    Genesis Baxi Heating Ltd. Fitting The Flue – Page 20 HORIZONTAL FLUE The standard flue supplied with the appliance is suitable for lengths 220mm minimum to 610mm maximum. Rear flue: maximum wall thickness - 490mm. Side flue, (left or right): maximum wall thickness - 477mm.
  • Page 21 Fit the circular flue trim outside if required. Fit a terminal guard if necessary (see page 16). VERTICAL FLUE Only a flue approved with the Baxi Genesis can be used. For information on vertical flues consult the Genesis Installer Guide or Notes for Guidance supplied with the vertical flue pack.

  • Page 22: Making The Electrical Connections

    CONNECTING AN EXTERNAL DEVICE If a Baxi Genesis Controller (programmable thermostat) is fitted refer to the instructions supplied with it. To connect an external timer or room thermostat, remove the link wire between terminals 1 & 2.
  • Page 23 Genesis Baxi Heating Ltd. Making The Electrical Connections – page 23 Fitting a Room Thermostat A 2-wire or 3-wire low voltage thermostat can be fitted to the Genesis plug. To fit a 2-wire thermostat, remove link, and wire the thermostat switch between positions 1 & 2.
  • Page 24 Genesis Baxi Heating Ltd. Schematic Wiring Diagram – Page 24 44 - 45 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 25 Genesis Baxi Heating Ltd. Illustrated Wiring Diagram – Page 25 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 26 Genesis Baxi Heating Ltd. Commissioning The Appliance – Page 26 Reference should be made to BS 5449 Section 5 when commissioning the appliance. Open the cold feed to the appliance. Open all hot water taps to purge the DHW system.
  • Page 27 Genesis Baxi Heating Ltd. Servicing The Appliance – Page 27 Annual Servicing For reasons of safety and economy, it is recommended that the appliance is serviced annually. To measure the Co% and (Co % content of the flue products, remove the LH sample screw and insert a suitable sampling probe.

  • Page 28: Pressure Switch

    Genesis Baxi Heating Ltd. Changing Components – Page 28 Ensure that both the gas and electrical supplies to the appliance are isolated. Remove the outer case and door panel as described under “Servicing the Appliance”. Isolate the water circuits and drain as necessary.

  • Page 29: Gas Valve Solenoids

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 29 Gas Valve Solenoids All three solenoids are permanently fixed to the valve cover plate. Remove the electrical connections, having noted their positions. The wires are colour coded to each solenoid. Remove the screws holding the plate to the valve body.

  • Page 30: Heat Exchanger

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 30 Heat Exchanger Remove the combustion box door as described under “Servicing the Appliance”. Undo the nut on the return pipe at the pump. Remove the “R” clip on the flow pipe at the manifold.
  • Page 31 Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 31 Pump (Head Only) Hinge down the electrical box. Remove the screw retaining the pump electrical cover and remove the cover. Disconnect the wires (L,N,E) and slide out the grommet assembly. Remove the four socket head screws securing the pump head, and seperate from the housing.

  • Page 32: Pcb & Spark Generator

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 32 PCB and Spark Generator Hinge down the electrical box. Remove the screws and small cover. Remove the three screws to release the cable clamp. Unplug the multipin connections to the two P.C.B.s as follows:- 1.
  • Page 33 Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 33 Spark Generator Disconnect generator lead at connection on power board (K). Lift power board partially from locating pegs to allow the release of the generator from its locating pins. Disconnect terminals to L, N & Earth.

  • Page 34: Thermistors

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 34 Thermistors The procedure is the same for both domestic hot water and central heating thermistors. Remove the electrical connection from the thermistor. Remove the spring clip retaining it to the manifold.

  • Page 35: Expansion Vessel

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 35 Expansion Vessel Hinge down the electrical box. Turn off gas tap and close all water valves. Drain as necessary. Undo all unions between the boiler and isolating valves, retaining the sealing washers.
  • Page 36 Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 36 Remove the boiler from the wall by lifting to unhook then remove from the lower support bracket. Stand the boiler on its base and undo the two screws holding the vessel retaining bracket to the chassis.

  • Page 37: Pressure Relief Valve

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 37 Pressure Relief Valve Close all water valves and drain as necessary. Disconnect the union between the valve and the discharge pipe. - Slacken the grub screw retaining the valve. Pull the valve sideways to disengage it.

  • Page 38: Flame Sensing Probe

    Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 38 Flame Sensing Probe Remove combustion box door, and hinge down electrical box. Disconnect the sensor lead from the main wiring loom (in line amp tag). Pull the lead through the grommet in the combustion box lower panel.
  • Page 39 Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 39 lnjector Manifold Remove the combustion box door. Remove the six screws holding the manifold to the burner and inlet pipe. Remove the burner flange and draw the manifold forwards. Reassemble in reverse order.
  • Page 40 Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 40 Domestic Hot Water Filter Undo the nut on the DHW inlet bend. Swivel the bend to gain access to the flat filter. AUTOMATIC AIR VENT Unscrew the air separator head assembly.
  • Page 41 Genesis Baxi Heating Ltd. CHANGING COMPONENTS – Page 41 Flow Regulator To remove the flow regulator use a small screwdriver to lever the plastic housing out of the valve inlet. Fit the replacement regulator ensuring it is inserted in the direction shown.
  • Page 42 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 43 Genesis Baxi Heating Ltd. Operational Flow Chart – Page 42 - 43 42 - 43 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 44 Genesis Baxi Heating Ltd. Operational Flow Chart – Page 44 - 45 44 - 45 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 45 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 46 Genesis Baxi Heating Ltd. Fault Finding – Page 46 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 47 Genesis Baxi Heating Ltd. FAULT FINDING – Page 47 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 48 Genesis Baxi Heating Ltd. FAULT FINDING – Page 48 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 49 Genesis Baxi Heating Ltd. FAULT FINDING – Page 49 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 50 Genesis Baxi Heating Ltd. Electronic Board Detail – Page 50 Supplied By www.heating spares.co Tel. 0161 620 6677...

  • Page 51: Injector Manifold

    Genesis Baxi Heating Ltd. Short Parts List – Page 51 Description G.C. Manuf’rs Part No Fan Assembly (80) 277 804 235799 Pump 277 862 235878 Power Board 277 880 235907 3-Way Valve 277 833 235838 control Board 277 881 235908...

This manual is also suitable for:

Genesis 96

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