Ideal Heating i305 - Table of Contents

5
Installation and Servicing
CONTENTS
1. GENERAL .........................................................................8
1.1 Introduction ........................................................................8
1.2 Operation ...........................................................................8
1.3 Safe Handling .................................................................... 9
1.4 Optional Extra Kits .............................................................9
1.5 Safety ................................................................................9
1.6 Safe Handling Of Substances ...........................................9
1.7 Location Of HIU ................................................................ 9
1.8 Primary Heat Supply Connection ....................................10
1.9 Water Circulation System ................................................10
1.10 Heat Interface Control Interlocks ..................................... 10
1.11 Electrical Supply .............................................................. 10
1.12 HIU Dimensions, Services & Clearances ........................ 11
1.13 System Requirements .....................................................12
1.14 System Balancing - Central Heating................................13
1.15 Water Treatment .............................................................. 13
2. INSTALLATION ...............................................................14
2.1 Heat Interface Unit - Exploded View ................................14
2.2 Unpacking........................................................................15
2.3 Mounting The Heat Interface Unit ....................................16
2.4 Connections.....................................................................16
2.5 System Filling ..................................................................17
2.6 Electrical Connections ..................................................... 19
2.7 Installer Wiring .................................................................20
2.8 External Wiring ................................................................20
2.9 Wiring Diagram ................................................................21
2.10 External Wiring ................................................................22
2.11 Initial Operation & Power Up ...........................................22
2.12 Display Functions ............................................................23
2.12.1 Menu Navigation..............................................................23
2.12.2 Normal Operation ............................................................24
2.12.3 Set CH Temperature 45°C - 25°C....................................25
2.12.4 Service Modes .................................................................26
2.13 Reset Procedure..............................................................28
2.14 Handing Over ..................................................................28
3. SERVICING ..................................................................... 29
3.1 Servicing Schedule ..........................................................29
3.2 Key Components - Indirect .............................................. 30
3.3 Key Components - Direct ................................................31
3.4 HIU Front Panel Removal / Replacement .......................32
3.5 Draining The Heat Interface Unit ..................................... 32
3.6 Primary Strainer Removal, Cleaning & Replacement......33
3.7 CH Pressure Gauge Replacement (Indirect Only) ..........33
3.8 CH Expansion Vessel Recharging &
Replacement (Indirect Only) ............................................34
3.9 DHW Water Hammer Arrestor Recharging &
Replacement ...................................................................34
3.10 CH Circulation Pump Head Replacement .......................35
3.11 Pump Automatic Air Vent Removal & Replacement ........35
3.12 Internal Insulation Front Section Removal &
Replacement ...................................................................36
3.13 DHW Plate Heat Exchanger Removal & Replacement ...37
3.14 CH Plate Heat Exchanger Removal & Replacement.......38
3.15 CH Water Pressure Switch Removal & Replacement ..... 39
3.16 Primary Return Thermistor ..............................................39
3.17 Domestic Hot Water Thermistor ......................................40
3.18 CH Flow & Return Thermistor .........................................40
3.19 CH Pressure Relief Valve ................................................ 41
3.20 PCB Removal & Replacement ........................................42
3.21 DHW Flow Regulator .......................................................43
3.22 DHW Flow Manifold With Integrated Turbine Assembly
Replacement ..................................................................43
3.23 DHW PICV ......................................................................44
3.24 CH PICV .......................................................................... 44
3.25 Heat Meter Installation.....................................................45
4. FAULT FINDING .............................................................48
4.1 Display Faults .................................................................. 48
4.2 Additional Fault Finding ................................................... 50
4.3 Fault Codes - Numeric.....................................................51
5. SPARE PARTS ...............................................................52
6. COMMISSIONING ...........................................................53