Nortek B5BM Series User Manual

2
TABLE OF CONTENTS
Important Safety Information ....................................3
Requirements & Codes ..............................................3
General Information ...................................................4
Before You Install this Unit .........................................4
Locating the Air Handler ............................................4
Minimum Clearances .................................................4
Operation of Air Handler During Construction ...........4
Installation in a Garage .............................................5
Plenums & Air Ducts .................................................5
Unconditioned Spaces ...........................................5
Air Filters ................................................................5
Acoustical Duct Work .............................................5
Air Handler Installation ..............................................6
Packaging Removal ...................................................6
Mounting Applications ...............................................6
Upflow Installations ...................................................6
Downflow Installations ...............................................6
Horizontal Installations ..............................................6
Horizontal Left Installations ....................................7
Horizontal Right Installations .................................7
Refrigerant Line Connections ....................................8
Orifice removal & Installation .................................8
Connecting the Linesets ........................................9
Condensate Drainage ............................................10
Electrical Connections ............................................. 11
Pre-Electrical Checklist ...........................................11
Line Voltage .............................................................11
Grounding................................................................11
Thermostat / Low Voltage Connections ................... 11
Control Board ..........................................................12
Twinning ...............................................................12
Heater Kits...............................................................12
Startup & Adjustments ............................................12
Before You Start the Unit .........................................12
Refrigerant Charging ...............................................13
Air Circulation ..........................................................13
Running the Blower Continuously ........................ 13
Continuous Low Speed Fan Operation ................13
Turning the Blower Off..........................................13
System Cooling ....................................................13
System Heating .................................................... 13
Blower Configurations .............................................13
Determining Nominal System Capacity ...............13
3-Speed Units ......................................................13
Unit Maintenance ...................................................... 14
Troubleshooting ........................................................14
Figures & Tables .......................................................15
Figure 10. B5 Series Physical Dimensions ..........15
Figure 11. Air Handler Components ..................... 16
Airflow Data .............................................................17
Table 2. B5BM Air Handlers .................................17
Electrical Diagrams .................................................18
Figure 12. Typical T-Stat Connections ..................18
Figure 13. Fixed Speed Control Board ................. 19
Figure 14. B5BM W.D. Variable Speed .................20
Figure 15. B5BM W.D. with X13 Motor .................21
Figure 16. B5BM W.D. 8 & 10 kW ......................... 22
Figure 17. B5BM W.D. 8 & 10 kW (X13 Motor) ..... 23
Figure 18. B5BM W.D. 15 kW ...............................24
Figure 19. B5BM W.D. 20 kW ...............................25
Electrical Data .........................................................26
Table 3. B5BM MCA & MOP Data ........................26
Table 4. Control Board Operation .........................26
Installation / Performance Checklist ....................... 28

Nortek B5BM Series Specifications

General

Brand	Nortek
Model	B5BM Series
Category	Air Handlers
Language	English