Table Of Contents; Condensate Drain; Loss Of System Water Pressure; Cleaning - Ideal Heating LOGIC+ SYSTEM S18 Installation & Servicing

1 GENERAL .................................................................... 7
1.1 Introduction .................................................................. 7
1.2 Operation ..................................................................... 7
1.3 Safe Handling ............................................................... 7
1.4 Optional Extra Kits ....................................................... 7
1.5 Safety ........................................................................... 8
1.6 Safe Handling Of Substances ...................................... 8
1.7 Location Of Boiler ........................................................ 8
1.8 Gas Supply ................................................................... 8
1.9 Flue Installation ............................................................ 9
1.10 Terminal ...................................................................... 10
1.11 Air Supply ................................................................... 10
1.12 Water Circulation System ........................................... 10
1.13 Boiler Control Interlocks ............................................. 10
1.14 Electrical Supply ......................................................... 10
1.15 Condensate Drain .................................................... 10
1.16 Boiler Dimensions, Services &
Clearances - Internal .................................................. 11
1.17 Boiler Dimensions, Services &
Clearances - External ................................................. 12
1.18 System Requirements - Central Heating .................... 13
1.19 System Balancing ...................................................... 14
1.20 Water Treatment......................................................... 14
2 INSTALLTION ............................................................ 15
2.1 Internal Boiler Assembly - Exploded View .................. 15
2.2 External Boiler Assembly - Exploded View ................ 16
2.3 Unpacking - Internal Boiler ......................................... 17
2.4 Unpacking - External Boiler ........................................ 17
2.5 Front Panel Removal ................................................. 18
2.6 Wall Mounting Template ............................................. 18
2.7 Preparing The Wall ..................................................... 19
2.8 Fitting The Wall Mounting Bracket - Internal Boiler .... 19
2.9 Mounting The Boiler - Internal .................................... 19
2.10 Fitting The Wall Mounting Bracket - External Boiler ... 20
2.11 Mounting The Boiler - External ................................... 21
2.12 Attaching Weather Shield .......................................... 22
2.13 Determining The Flue Length .................................... 23
2.14 Cutting & Setting The Flue Length ............................. 24
2.15 Installing The Flue (Internal Boiler) ............................ 25
2.16 Fitting The Optional Roof Flue Kit .............................. 25
2.17 Assembling The Roof Flue Kit .................................... 26
2.18 Condensate Drain ...................................................... 27
2.19 Connections & Filling ................................................. 28
2.20 Electrical Connections ................................................ 29
2.21 Installer Wiring ........................................................... 29
2.22 Replacing Pre-Fitted Mains Cable ............................. 30
2.23 Wiring Diagram .......................................................... 31
2.24 Commissioning And Testing ....................................... 32
2.25 Initial Lighting ............................................................. 33
2.26 General Checks ......................................................... 34
2.27 Restart Procedure ...................................................... 34
2.28 Accessing The Installer Mode .................................... 35
2.29 Handing Over ............................................................. 35
4
CONTENTS
3 SERVICING ............................................................... 36
3.1 Servicing Schedule .................................................... 36
3.2 Boiler Front Panel Removal / Replacement ............... 37
3.3 Weather Shield Removal / Replacement .................. 37
3.4 Fan And Venturi Assembly Removal And Cleaning .... 38
3.5 Burner Removal And Cleaning ................................... 39
3.6 Cleaning The Condensate Trap/Siphon .................... 39
3.7 Cleaning The Heat Exchanger ................................... 40
3.8 Reassembly ............................................................... 40
3.9 Replacement Of Components .................................... 41
3.10 Fan Replacement ....................................................... 41
3.11 Burner Injector Replacement ..................................... 42
3.12 Burner Replacement .................................................. 42
3.13 Return Thermistor Replacement ................................ 43
3.14 Ignitor Electrode Replacement ................................... 43
3.15 Flame Detection Electrode Replacement ................... 44
3.16 Spark Generator Replacement .................................. 44
3.17 Gas Control Valve Replacement ................................ 45
3.18 Condensate Trap/Siphon Replacement ..................... 45
3.19 PCB Replacement ...................................................... 46
3.20 Draining The Boiler .................................................... 46
3.21 Pressure Gauge Replacement ................................... 47
3.22 Safety Relief Valve Replacement ............................... 47
3.23 Pump Automatic Air Vent Replacement .................... 48
3.24 Pump Head Replacement .......................................... 48
3.25 CH Water Pressure Switch Replacement .................. 49
3.26 Control / No Flow Thermistor Replacement ............... 49
3.27 Heat Engine Replacement ......................................... 50
3.28 Expansion Vessel Recharging & Replacement .......... 51
4 FAULT FINDING ........................................................ 52
4.1 Fault Finding Chart Main Menu .................................. 52
4.2 'L1' - Flow Temperature Overheat Lockout Or No Water
Flow Lockout .............................................................. 53
4.3 'L2' - Ignition Lockout ................................................. 53
4.4 'L6' - False Flame Lockout ........................................ 54
4.5 'F1' - Low Water Pressure .......................................... 54
4.6 'F2' Or 'Fn' Or 'Ln' - Flame Loss ................................. 54
4.7 'F3' - Fan Fault ........................................................... 54
4.8 'L4' Or 'F4' - Control / No Flow Thermistor Fault ........ 55
4.9 'F5 Or L5' - Return Thermistor Fault .......................... 55
4.10 'F6' - Outside Sensor Fault......................................... 55
4.11 No CH Operation ........................................................ 56
4.12 No Display .................................................................. 56
4.13 No HW ........................................................................ 56
5 SPARE PARTS .......................................................... 57
6 COMMISSIONING & SERVICING ............................. 58
Installation and Servicing