Lennox PRODIGY2.0 - Page 5

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20.2. System Relative Humidity Options 79....................................................
20.3. System Indoor Air Quality / Carbon Dioxide Options 79....................................
20.4. System Outdoor Air Temperature Operation 79...........................................
21. Advanced Airflow System (Smart Airflow) 81.................................................
21.1. Calibration 81........................................................................
21.2. Supply Airflow Measurement and Control 81..............................................
21.3. Outdoor Airflow (OA) Measurement and Control 82........................................
21.3.1. Ventilation Errors 82..........................................................
21.3.2. Damper Diagnostics 82........................................................
22. Sequence of Operation 83...................................................................
22.1. Unit Controller Control Modes 83........................................................
22.1.1. Unit Controller In Room Sensor Mode 83........................................
22.1.2. Unit Controller In Thermostat Mode 83..........................................
22.1.3. Operations Common to All Rooftop Units 85.....................................
22.1.3.1. Occupied Demand 85................................................
22.1.3.2. Demand Control Ventilation (DCV) 85..................................
22.1.3.3. Fresh Air Tempering (FAT) 85.........................................
22.1.3.4. Discharge Air Cooling Reset Operation 86..............................
22.1.3.5. Discharge Air Heating Reset Operation 86..............................
22.1.3.6. Damper Position Control of Exhaust Fan (Building Pressure) 86...........
22.2. CAV Units in Single-Zone Applications with a Lennox Room Sensor 87.......................
22.2.1. Unit Controller Operation (4-Heat / 4-Cool) 87....................................
22.2.2. Ventilation Demand 87........................................................
22.2.3. Cooling Demand 87...........................................................
22.2.4. Cooling Demand with Economizer 87............................................
22.2.5. Heating Demand (General Operation) 87........................................
22.2.6. Heating Demand (Electric) 87..................................................
22.2.7. Humiditrol Dehumidification Operation - Dehumidification Demand 88................
22.2.8. Humiditrol Dehumidification Operation - Cooling Demand Only 88...................
22.2.9. Humiditrol Dehumidification Operation - Cooling and Dehumidification Demand 88....
22.3. CAV Units in Single-Zone Applications — Wired Thermostat or Third-Party Unit Controller 88....
22.3.1. Unit Controller Operation (2-Heat / 2-Cool) 88....................................
22.3.1.1. Ventilation Demand 88...............................................
22.3.1.2. Cooling Demand 88.................................................
22.3.1.3. Cooling Demand With Economizer 89..................................
22.3.1.4. Heating Demand (General Operation) 89...............................
22.3.1.5. Heating Demand (Electric) 89.........................................
22.3.1.6. Humiditrol Dehumidification Operation - Dehumidification Demand 89......
22.3.1.7. Humiditrol Dehumidification Operation - Cooling Demand Only 89.........
22.3.1.8. Humiditrol Dehumidification Operation - Cooling and Dehumidification Demand
90
22.3.2. Discharge Air Temperature Control (4-Heat / 4-Cool) 90...........................
22.3.2.1. Unit Controller Operation 90..........................................
22.3.2.2. Ventilation Demand 90...............................................
22.3.2.3. Cooling Demand 90.................................................
22.3.2.4. Cooling Demand With Economizer 90..................................
22.3.2.5. Heating Demand (General Operation) 91...............................
22.3.2.6. Heating Operation (Electric) 91.......................................
22.3.3. Bypass Zoning Applications (2-Heat / 2-Cool) 91..................................