1 - Introduction ......................................................................................................................... 5
3 - Component Listing ............................................................................................................... 7
4 - Locating Boiler ................................................................................................................... 11
5 - Hydronic Piping .................................................................................................................. 13
5.2 Special Conditions ........................................................................................................... 13
5.4 Trim Piping ..................................................................................................................... 14
5.5 System Piping................................................................................................................. 14
6.3 Materials ....................................................................................................................... 21
6.4 Pipe Installation .............................................................................................................. 22
6.5 Termination .................................................................................................................... 22
6.5 Venting Confi gurations ..................................................................................................... 23
6.9 Condensate Piping ........................................................................................................... 31
7 - Gas Supply Piping .............................................................................................................. 32
8 - Electrical Connections ........................................................................................................ 34
8.4 External Connections ....................................................................................................... 34
9 - Start Up Procedure ............................................................................................................. 36
13 - Trouble Shooting .............................................................................................................. 47
14 - Wiring Diagram ................................................................................................................ 64
15 - Glossary ........................................................................................................................... 68
2.1 Introduction ................................................................................................................... 71
2.2 Operation ....................................................................................................................... 71
2.3 Status Indication ............................................................................................................. 71
2.4 Sequence of Operation ..................................................................................................... 72
2.5 Theory of Operation ........................................................................................................ 74
TABLE OF CONTENTS
4