Baxi 24 Combi - Page 87

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All technical and technological information contained in these technical instructions, as well as any drawings and technical

descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing. Subject to alterations.

Main Page

Table of Contents3
Safety6
Benchmark6
Building Regulations and the Benchmark Commissioning Checklist6
The Benchmark Scheme6
Installer Notification Guidelines7
General Safety Instructions8
Recommendations8
Specific Safety Instructions9
Handling9
Liabilities10
Manufacturer's Liability10
Installer's Liability10
User's Liability10
About this Manual11
General11
Additional Documentation11
Symbols Used11
Symbols Used in the Manual11
Abbreviations/Glossary11
Technical Specifications12
Homologations12
3.1.1 Safety, Performance & Quality12
Certifications12
Gas Category12
Standards12
Technical Data13
Technical Information13
Features of the Temperature Sensors16
Dimensions and Connections16
Electrical Diagram18
Description of the Product19
General Description19
Operating Principle19
Air-Gas Adjustment19
Combustion19
Heating and Domestic Hot Water Production19
Control Panel Description21
Description of the Control Panel21
Contents of the Package21
Accessories & Options21
Before Installation22
Installation Standards and Rules22
Installation Requirements22
Gas Supply22
Electrical Supply22
Hard Water Area23
Bypass23
System Control23
Treatment of Water Circulating Systems23
Showers24
Expansion Vessel (CH Only)24
Safety Pressure Relief Valve24
Flow Rate/Head at the Plate Characteristics25
Choice of the Location26
Location of the Boiler26
Bath and Shower Rooms26
Ventilation27
Condensate Drain27
Clearances29
Flue/Chimney Location29
Horizontal Flue/Chimney Systems31
Flue/Chimney Trim34
Terminal Guard34
Flue/Chimney Deflector34
Flue/Chimney Accessories34
Data Plate and Boiler Service Level35
Transport35
Unpacking and Initial Preparation36
Unpacking36
Initial Preparation37
Connecting Diagrams37
Filling Information37
Domestic Hot Water Circuit38
Installation39
General39
Assembly39
Fitting the Pressure Relief Discharge Pipe39
Connecting the Condensate Drain40
Air Supply/Flue Gas Connection40
Connecting the Flue/Chimney40
Electrical Connections42
Accessing the Electrical Connections42
Connecting the Room Thermostat42
Service Connection (SERVICE)43
Connecting on Wall Outdoor Sensor43
Connecting the Outside Sensor43
Identifying Label43
Filling the Installation44
Flushing the System44
Filling the Condensate Trap44
Draining the Installation44
Commissioning45
General45
Checklist before Commissioning45
Commissioning Procedure45
Gas Settings46
Checking the Working Gas Inlet Pressure and Gas Rate46
Combustion Parameters46
Service Settings50
Calibrating the Gas Valve51
Final Instructions52
Handover52
Operation53
Use of the Control Panel53
Browsing the Menus53
Running the Automatic Detection Function53
Information Menu Display53
Counter Menu Display53
Start-Up54
Procedure for First Start-Up54
Changing the Heating Flow Temperature54
Changing the Domestic Hot Water (DHW) Temperature54
Shutdown55
Switching off the Heating and Domestic Hot Water (DHW)55
Degassing Function55
Frost Protection55
Settings56
Accessing the Settings56
List of Parameters56
Resetting Factory Settings57
Setting the Parameters57
Setting the Heating Curve57
Reading out Measured Values58
Statuses and Sub-Statuses59
Reading Counters61
10 Maintenance62
General62
Maintenance Message63
Service Notification63
Resetting the Displayed Maintenance Message63
Resetting the Upcoming Maintenance Message64
Checking the Water Pressure64
Checking the Expansion Vessel64
Checking the Flue Gas Discharge and the Air Supply65
Checking the Combustion65
Checking the Automatic Air Vent65
Cleaning the Siphon65
Checking the Burner and Cleaning the Heat Exchanger66
Water Unit67
10.3.10 Removing Limescale67
Specific Maintenance Operations68
Detection/Ignition Electrode Replacement68
Dismantling the Water-Water Exchanger68
10.4.5 Replacing the 3-Way Valve69
Pump Motor Replacement71
10.4.11 Replacing the Expansion Vessel71
Replacing the PCB71
11 Troubleshooting72
Temporary and Permanent Faults72
Error Codes72
12 Decommissioning77
Disassembly77
Recommissioning77
13 Disposal78
Disposal and Recycling78

Baxi 24 Combi - Page 87

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