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TABLE OF CONTENTS
11.1.3 - Filling the heating system .....................................................................................................................................39
11.1.4 - Filling of the domestic hot water heat exchanger (“45WN and 45WE” models only) .......................................... 39
11.1.5 – Auto-purging the heating system.......................................................................................................................... 39
11.2 - General warnings concerning gas supply ..........................................................................................................................40
11.3 - Confirming the boiler’s gas type ......................................................................................................................................... 40
11.4 - Gas type conversion ............................................................................................................................................................ 40
11.5 - Start-up .................................................................................................................................................................................40
11.6 - Ignition control testing .......................................................................................................................................................... 40
11.7 - Gas supply pressure checking and adjustment .................................................................................................................41
11.8 - Check the combustion air pressure ...................................................................................................................................42
11.9 - Checking and adjusting CO2 levels ....................................................................................................................................43
11.9.1 - Checking and adjusting CO2 levels without CO2 meter ......................................................................................43
11.10 - Adjusting the heating capacity ...........................................................................................................................................44
11.11 - Domestic hot water flow rate adjustment (45WN and 45WE models only) .....................................................................44
11.12 - Cold start boiler ................................................................................................................................................................. 44
12 - USE ............................................................................................................................................................................................... 45
12.1 - Adjusting the domestic hot water temperature .................................................................................................................. 45
12.2 - Heating system temperature adjustment ...........................................................................................................................45
12.3 - Heating system type selection ............................................................................................................................................45
12.4 - Climatic adjustment ............................................................................................................................................................45
12.4.1 - Climatic adjustment: applicable system ..............................................................................................................45
12.4.2 - Climatic adjustment precautions..........................................................................................................................45
12.4.3 - Climatic adjustment: setting parameters ............................................................................................................. 46
12.4.4 - Climatic adjustment: zone adjustments ............................................................................................................... 46
12.4.5 - Climatic adjustment activation .............................................................................................................................. 46
12.4.6 – Climatic adjustment with room compensation ................................................................................................... 46
12.5 - Boiler switch settings ..........................................................................................................................................................48
12.6 - Delays, alarms and protective actions ................................................................................................................................ 48
12.7 - Circulator pump and three way valve protection ................................................................................................................. 48
12.8 - Freeze protection ................................................................................................................................................................. 48
12.9 - Display in energy saving mode ...........................................................................................................................................48
12.10 - “Users’ menu” ...................................................................................................................................................................49
12.11 - “Installers’ menu” .............................................................................................................................................................. 50
12.12 - Diagnostics ....................................................................................................................................................................... 52
12.12.1 - Diagnostics: “L” lock-outs ...................................................................................................................................53
12.12.2 - Diagnostics: “E” blocking errors ......................................................................................................................... 55
12.13 - Remote command for model 45WE and 45AE ................................................................................................................ 57
13 - MAINTENANCE .............................................................................................................................................................................58
13.1 - General precaution .............................................................................................................................................................. 58
13.2 - Removing the casing for models 45WN and 45AN ............................................................................................................59
13.3 - Removing the casing on models 45WE and 45AE ............................................................................................................60
13.3.1 - Installing the casing on models 45WE and 45AE ................................................................................................ 60
13.4 - Cleaning the burner and primary heat exchanger, flue gas side ......................................................................................61
13.5 - Correct positioning of the ignition and flame detection electrodes ......................................................
.............................. 62
13.6 - Domestic hot water heat exchanger (only for 45WN model ............................................................................................... 62
13.7 - Condensate trap cleaning ...................................................................................................................................................63
13.8 - Circulator pump motor replacement (only for 45WN and 45WE models) ......................................................................... 64
13.9 - Expansion tank pressure (only for 45WN and 45WE models) ........................................................................................... 64
13.10 - 3-way valve removal (only for 45WN and 45WE models) ................................................................................................. 65
13.11 - Draining the heating side of the boiler .............................................................................................................................. 66
13.12 - Draining the domestic hot water side of the boiler ........................................................................................................... 66
13.13 – Overrides ..........................................................................................................................................................................66
13.13.1 - Auto-purging ........................................................................................................................................................ 66
13.13.2 - Fan....................................................................................................................................................................... 66
13.13.3 – Minimum and maximum output ......................................................................................................................... 66
13.13.4 – Checking the flame current ................................................................................................................................66
13.14 - Water and flue temperature sensor ..................................................................................................................................67
13.15 - Outdoor temperature sensor (optional) ............................................................................................................................67
13.16 - Functional wiring diagram .................................................................................................................................................68
13.17 - Multiwire wiring diagram ...................................................................................................................................................69
14 - TECHNICAL DATA .........................................................................................................................................................................70
15 - SPARE PARTS .............................................................................................................................................................................. 71
16 - MENU’S FLOW CHART .................................................................................................................................................................76
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