Contents
Getting Other Information and Publications  | 3  | Start Up  | 
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  | General  | 14  | 
Wall Mount General Information  | 
  | Topping Off System Charge  | 14  | 
ECU Wall Mount Model Nomenclature  | 4  | Safety Practices  | 14  | 
Shipping Damage  | 4  | Important Installer Note  | 15  | 
General  | 4  | High Pressure Switch  | 15  | 
Duct Work  | 5  | Three Phase Scroll Compressor  | 15  | 
Filters  | 5  | Phase Monitor  | 15  | 
Fresh Air Intake  | 5  | Service Hints  | 15  | 
Condensate Drain  | 5  | Digital Controller  | 15  | 
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  | Sequence of Operation  | 16 & 17  | 
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  | Lead/Lag Sequence  | 17  | 
Installation Instructions  | 
  | Compressor Control Module  | 18  | 
Wall Mounting Information  | 6  | Adjustments  | 18  | 
Mounting the Unit  | 6  | Pressure Service Ports  | 18  | 
Clearances Required  | 6  | 
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Minimum Clearances  | 6  | Troubleshooting  | 
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Wiring – Main Power  | 13  | Fan Blade Setting Dimensions  | 19  | 
Wiring – Low Voltage Wiring  | 13  | Removal of Fan Shroud  | 19  | 
Digital Thermostat/Controller  | 13  | Refrigerant Charge  | 19  | 
Wiring Diagram  | 13  | 
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Figures | 
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  | Tables | 
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Figure 1  | Fresh Air Damper Assembly  | 5  | Table 1 Fan Blade Dimensions  | 19  | |
Figure 2  | Unit Dimensions  | 7  | Table 2  | Cooling Pressure  | 20  | 
Figure 3A  | Mounting Instructions  | 8  | Table 3  | Electrical Specifications W*R/LV  | 21  | 
Figure 3B  | Mounting Instructions  | 9  | Table 4  | Recommended Airflow  | 22  | 
Figure 4  | Electric Heat Clearance  | 10  | Table 5  | Maximum ESP Electric Heat Only  | 22  | 
Figure 5  | Wall Mounting Instructions  | 11  | Table 6  | Electric Heat  | 22  | 
Figure 6  | Wall Mounting Instructions  | 11  | Table 7 Vent & Control Options  | 23  | |
Figure 7  | Common Wall Mounting Installations....  | 12  | 
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Figure 8  | Fan Blade Setting  | 19  | 
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Manual  | |
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