Technical data
Linea 24 & 28
CONTENTS
Section Subject Page no
Section 1 Introduction 1
General Layout 1
Section 2 Design Principles & Operating
Principles 2
Schematic Diagram 2
Central Heating Mode 2
Domestic Hot Water Mode 2
Safety Devices 2
Frost Thermosat 2
Section 3 Technical Data 3
Dimensions & Contents 3
Connection Sizes 3
Installation Requirements 3
Electrical Details 3
Performance & Limitations 3
Working Pressure (H/W & C/H) 4
Flow Rates 4
Central Heating Pump Duty 4
Section 4 General Requirements 5
Related Documents 5
Location of Appliance 5
Gas Supply 5
Flue System 5
Air Supply 6
Water Circulation (C/H) 6
Pipework 6
By-Pass 6
System Design 6
Filling Point 8
Electrical Supply 8
Showers 8
Section 5 Installation 9
Delivery 9
Unpacking 9
Preparing For Mounting 9
Mounting The Appliance 10
Fitting The Flue (Horizontal) 10
Fitting The Flue (Vertical) 11
Fitting The Flue (Twin) 12
Connecting Gas & Water Supplies 15
Electrical connections 15
Section 6 Commissioning 17
Gas Installation 17
Initial Flushing of Pipework 17
Initial Filling of System 17
System Design Pressure 17
Checking Electrical supply 17
Lighting The Boiler 17
Checking Burner Pressures 18
Range Rating C/H 19
Checking The Flue System 19
Checking The Heating Thermistor 19
Regulating The C/H System 19
Final Flushing The C/H System 19
Filling & Testing H/W System 19
Final Checks For Operation 20
Section Subject Page no
Concluding Operations 20
Section 7 Instructing The User 20
Section 8 Servicing Instructions 21
General 21
Recommended Routine Servicing 21
Replacement Of Parts 21
To Gain General Access 22
To Remove:
Room Sealed Chamber Front Cover 22
Main Burner & Electrode 23
Main Burner Injectors 23
Main Heat Exchanger 23
Fan 24
DAPS
24
Combustion Chamber Insulation Panel
24
Ignition PCB 25
Gas Control Valve 25
Pump 26
Domestic Flow Switch 26
Diverter
Valve 26
Domestic Heat Exchanger 27
Diverter Valve 27
Main Expansion Vessel 27
Safety Valve 28
Pressure Switch 28
Motorised Valve 29
Printed Circuit Board 29
Display Printed Circuit Board 29
Safety Thermostat 29
Thermistor Sensors 29
Pressure Gauge 29
Setting Gas Pressures 30
Section 9 Operational Checks & Wiring 32
Sequence of Functions 32
Diagnostic Error Codes 33
Fault Finding Guides 34-43
Section 10Appendix 44
Internal Time Clock Installation 44
External Time Clock Installation 46
S & Y Plan Installations 47
Exploded Diagrams 48-52
Abling & Disabling Controls 53
Functional Flow Diagram 54
Illustrated Wiring Diagram 55
Preliminary Electrical System Checks56
LPG Instructions 57-58