3
Table of Contents
Safety .............................................................................................................................................. 6
BL Base Model and Features Description ...................................................................................... 9
General Information ...................................................................................................................... 13
Codes and Ordinances ............................................................................................................... 13
Receiving Unit ........................................................................................................................... 13
Storage ....................................................................................................................................... 13
Outdoor Mechanical Room ....................................................................................................... 13
Wiring Diagrams ....................................................................................................................... 14
General Maintenance ................................................................................................................. 14
Boiler System ............................................................................................................................ 14
Boiler Primary/Secondary Pumping .......................................................................................... 14
Makeup Water ........................................................................................................................... 15
Compression/Expansion Tank ................................................................................................... 15
Pressure Relief Valve ................................................................................................................ 16
Automatic Air Vent ................................................................................................................... 16
Dual Pumps ............................................................................................................................... 16
Pressure Gauges and Thermometers ......................................................................................... 16
Pipe Insulation ........................................................................................................................... 17
Installation..................................................................................................................................... 17
Outdoor Mechanical Room Placement...................................................................................... 17
Curb and Steel Mount Installation ............................................................................................ 17
Lifting and Handling ................................................................................................................. 18
Water Connection ...................................................................................................................... 20
Gas Connection ......................................................................................................................... 20
Boiler Exhaust Connection ........................................................................................................ 20
Boiler Intake Connection .......................................................................................................... 22
Mounting Isolation .................................................................................................................... 22
Access Doors ............................................................................................................................. 22
Electrical .................................................................................................................................... 22
Startup ........................................................................................................................................... 24
Maintenance .................................................................................................................................. 25
General ...................................................................................................................................... 25
Lubrication ................................................................................................................................ 25
Service ....................................................................................................................................... 25
Replacement Parts ..................................................................................................................... 25
AAON Warranty, Service, and Parts Department ..................................................................... 25
Appendix - Water Piping Component Information ...................................................................... 26
Water Pressure Reducing Valve ................................................................................................ 26
Water Pressure Relief Valve ..................................................................................................... 28
Automatic Air Vent Valves ....................................................................................................... 28
Pumps - Installation and Operating Instructions ....................................................................... 30
Dual Pump Specific Information ............................................................................................... 35
Horizontal and Vertical Expansion Tanks ................................................................................ 41
