andrews COMBIflo 100/300, Installation, Operation And Maintenance Manual

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ANDREWS COMBIfl o 1 GB
Table of Contents
Ref Subject Page
1.0 General & Safety Information
1.1 Description of appliance ............................................................. 2
1.2 For whom is this manual intended? ............................................. 2
1.3 Symbols used in this guide ......................................................... 3
2.0 Safety
2.1 General safety ............................................................................ 4
2.2 Regulations and standards ......................................................... 5
2.3 UKCA & CE Marking ................................................................... 6
3.0 Technical Data
3.1 Dimensions and connections ...................................................... 7
3.2 Performance data ....................................................................... 8
3.3 System Schematic ...................................................................... 9
3.4 Application examples .................................................................. 10
3.5 Wiring diagrams .......................................................................... 16
3.6 Sensor values ............................................................................. 18
4.0 Installation
4.1 Splitting the appliance ................................................................ 19
4.2 Locating the appliance ............................................................... 20
4.3 Fixing to fl oor .............................................................................. 20
4.4 New & existing heating systems ................................................. 21
4.5 Water connections ..................................................................... 22
4.6 Open vent design ...................................................................... 23
4.7 Unvented design ........................................................................ 24
4.8 Secondary return design (DHW circulation pump) .................... 25
4.9 Condensate disposal .................................................................. 25
4.10 Immersion heater ....................................................................... 26
4.11 Mixing valve and actuator control ............................................... 27
4.12 Flue systems and ventilation ...................................................... 28
4.13 Flue terminal positions ................................................................ 30
4.14 Maximum fl ue lengths ................................................................. 31
4.15 Gas connections ......................................................................... 32
4.16 Electrical connections ................................................................. 33
4.17 AGU2.5 Expansion modules ....................................................... 34
4.18 Web server OZW672 ................................................................. 36
4.19 Outside sensor and wired room units ......................................... 38
5.0 Commissioning
5.1 Filling and removal of air ............................................................ 42
5.2 Commissioning of heat engines ................................................. 44
5.3 Conversion to LPG .................................................................... 48
5.4 Frost protection and Legionella .................................................. 49
5.5 Final checks and user handover ................................................ 49
5.6 Fault fi nding ............................................................................... 50
6.0 Maintenance
6.1 Routine Inspection intervals & requirements ............................... 51
6.2 Removing and changing components ........................................ 54
6.3 Component parts list .................................................................. 64
6.4 Component illustrations .............................................................. 66
6.5 Recommended spares requirements ......................................... 69
6.6 Fault code table .......................................................................... 70