Important Safety Information

3

General Information

4

Before You Install this Unit

4

Locating the Air Handler

4

Field Connections for Electrical Power Supply

4

Air Ducts

4

Unconditioned Spaces

4

Acoustical Duct Work

4

Air Handler Installation

5

Packaging Removal

5

Minimum Clearance Requirements

5

Horizontal Mounting Applications

5

Vertical Mounting Applications

5

Condensate Drain

5

Connecting Refrigerant Tubing

5

Filter Requirements

6

Electrical Wiring

7

Pre - Electrical Checklist

7

Line Voltage

7

Thermostat Connections

7

Electrical Wiring with a Duct Heater

7

Unbalanced 3-Phase Supply Voltage

8

Grounding

8

Startup & Adjustments

8

Pre - Start Checklist

8

Motor Sheave Adjustment

8

Pulley Alignment

9

Belt Tensioning

9

Blower Adjustments

9

Unit Maintenance

9

Figures & Tables

10

Figure 4. Physical Dimensions - Horizontal

10

Figure 5. Physical Dimensions - Vertical

11

Table 4. Blower Performance Data

12

Electrical Information

13

Figure 6. B5SM Wiring Diagram

13

Figure 7. Air conditioner T-stat Connections

14

Figure 8. Heat pump T-stat Connections

15

Figure 9. Maintenance Schedule

16

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Nordyne B5SM -090 installation instructions Physical Dimensions Horizontal