8
SAFETY INSTRUCTIONS .................................................................................................................2
TABLE OF CONTENTS .....................................................................................................................8
1 - CODE REQUIREMENTS ..............................................................................................................9
1.1 - Regulations and guidelines .................................................................................................................................. 9
2 - GENERAL INFORMATION .........................................................................................................10
2.1 - Key to symbols used .......................................................................................................................................... 10
2.2 - Manufactured by ................................................................................................................................................ 10
2.3 - Description of models: ........................................................................................................................................ 10
3 - FUNCTION OVERVIEW .............................................................................................................11
3.1 - Intended use and functions ................................................................................................................................ 11
3.1.1 Intended use and functions of the IB boiler ................................................................................................................ 11
3.1.2 Intended use and functions of the IW water heater .................................................................................................... 11
3.2 - Effi ciency up to 98% (IB boiler only) .................................................................................................................. 11
4 - INSTALLATION - Vent and combustion air .............................................................................12
4.1 - Prevent combustion air contamination ............................................................................................................... 12
5 - USE .............................................................................................................................................13
5.1 - Overview ............................................................................................................................................................ 14
5.2 - Displays .............................................................................................................................................................. 14
5.3 - Start-up procedure ............................................................................................................................................. 14
5.4 - IW supply water temperature adjustment ........................................................................................................... 14
5.5 - IB - Indirect water heater temperature adjustment ............................................................................................. 14
5.6 - IB - Heating temperature adjustment ................................................................................................................. 14
5.7 - Delays, alarms and protective actions ............................................................................................................... 15
5.8 - Circulator pump protection ................................................................................................................................. 15
5.9 - Freeze protection ............................................................................................................................................... 15
5.10 - Display in energy saver mode ......................................................................................................................... 15
5.11 - “Users’ menu” ................................................................................................................................................... 16
5.12 - Diagnostic ........................................................................................................................................................ 17
5.13 - Safety fl ue blocked pressure switch ................................................................................................................. 17
5.14 - Shuts heater down ........................................................................................................................................... 17
5.15 - How to clean the appliance jacket .................................................................................................................... 17
6 - MAINTENANCE ..........................................................................................................................18
6.1 - Care and maintenance ....................................................................................................................................... 18
6.1.1 - Check relief valve ..................................................................................................................................................... 20
6.1.2 - Check heater area .................................................................................................................................................... 20
6.1.3 - Check pressure gauge ............................................................................................................................................. 20
6.1.4 - Check vent piping ..................................................................................................................................................... 20
6.1.5 - Check air piping........................................................................................................................................................ 21
6.1.6 - Check condensate drain system .............................................................................................................................. 21
6.1.7 - Check heater piping (gas and water) ....................................................................................................................... 21
6.1.8 - Shut boiler down ...................................................................................................................................................... 21
1. Follow “To Turn Off Gas to Appliance” on page 3 of this manual. ................................................................................... 21
6.1.9 - Test low water cutoff (if installed) ............................................................................................................................. 21
6.1.10 - Reset low water cut off button (If used) .................................................................................................................. 21
TABLE OF CONTENTS