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Manual 2100-538E
Page 2 of 23
Contents
Figures
Figure 1 Fresh Air Damper Assembly ................... 5
Figure 2 Unit Dimensions ...................................... 7
Figure 3A Mounting Instructions .............................. 8
Figure 3B Mounting Instructions .............................. 9
Figure 4 Electric Heat Clearance ........................ 10
Figure 5 Wall Mounting Instructions.....................11
Figure 6 Wall Mounting Instructions.....................11
Figure 7 Common Wall Mounting Installations.... 12
Figure 8 Fan Blade Setting ................................. 19
Tables
Table 1 Fan Blade Dimensions.......................... 19
Table 2 Cooling Pressure .................................. 20
Table 3 Electrical Specifications W*R/LV .......... 21
Table 4 Recommended Airflow .......................... 22
Table 5 Maximum ESP Electric Heat Only........ 22
Table 6 Electric Heat ......................................... 22
Table 7 Vent & Control Options ......................... 23
Getting Other Information and Publications 3
Wall Mount General Information
ECU Wall Mount Model Nomenclature .................... 4
Shipping Damage .................................................... 4
General ................................................................ 4
Duct Work................................................................ 5
Filters ................................................................ 5
Fresh Air Intake ....................................................... 5
Condensate Drain.................................................... 5
Installation Instructions
Wall Mounting Information ....................................... 6
Mounting the Unit .................................................... 6
Clearances Required ............................................... 6
Minimum Clearances ............................................... 6
Wiring – Main Power ............................................. 13
Wiring – Low Voltage Wiring ................................. 13
Digital Thermostat/Controller ................................. 13
Wiring Diagram ...................................................... 13
Start Up
General .............................................................. 14
Topping Off System Charge................................... 14
Safety Practices..................................................... 14
Important Installer Note ......................................... 15
High Pressure Switch ............................................ 15
Three Phase Scroll Compressor............................ 15
Phase Monitor ....................................................... 15
Service Hints ......................................................... 15
Digital Controller .................................................... 15
Sequence of Operation.................................. 16 & 17
Lead/Lag Sequence .............................................. 17
Compressor Control Module .................................. 18
Adjustments ........................................................... 18
Pressure Service Ports .......................................... 18
Troubleshooting
Fan Blade Setting Dimensions .............................. 19
Removal of Fan Shroud ......................................... 19
Refrigerant Charge ................................................ 19