Manual 2100-670IPage 19 of 47Blower Status SwitchThe unit is equipped with a differential pressure airflowswitch to monitor the blower (see Figure 30). If theblower is turned on and the switch doesn't open toindicate there is differential pressure between the inletand outlet of the blower, an alarm will be generated.For switch settings, see Figure 30.TABLE 3BHR58AP* Blower SpeedsTABLE 4Rated AirflowNominal Rated CFM Nominal Rated ESPHigh LowHR36AP* 1200 950 0.00HR58AP* 1800 1400 0.10TABLE 5Indoor Blower PerformanceSpeed High LowESP(Inch H20)DryCoilWetCoilDryCoilWetCoilHR36AP* 0.00 1260 1200 995 950HR58AP* 0.10 1885 1800 1470 1400TABLE 6Maximum ESP of OperationElectric Heat Only* Unit is rated for free blow non-ductedoperation with SGR-5W Supply Grilleand RGR-5W Return Grille.Model Static Pressure*-A0Z-A05.00".00"-B0Z-B06.00".00"Mode SpeedPercentageControllerOutput Volts CFMFreezestat Active 80.0 8.0 v 2260High Sensible FullLoad Cooling 75.0 7.5 v 2180High Sensible PartLoad Cooling 50.0 5.0 v 1705Standard Full LoadCooling 55.0 5.5 v 1830Standard Part LoadCooling 35.0 3.5 v 1335Economizer StandardEconomizer High S/T45.075.04.5 v7.5 v16001950Heating 35.0 3.5 v 1335DehumidificationMode 35.0 3.5 v 1335FIGURE 30Dirty Filter Switch and Blower Status SwitchFIGURE 31Verifying Differential Airflow StatusDifferential airflow status can be viewed by:1. Press MENU key to go to the Main Menu screen.2. Press UP or DOWN keys and ENTER key to enterTECHNICIAN password 1313.3. Press UP or DOWN keys to scroll to I/O Config;press ENTER key.4. Press UP or DOWN keys to scroll to Digital InConfig (C2); press ENTER key.5. Reference 7 NoAir row and Val column (see Figure31).