York CSA 48 Technical Manual

254597-YTG-B-050714 Unitary Products GroupTABLE 12: BELT DRIVE BLOWER MOTOR AND DRIVE DATAMODELSIZEBLOWERRANGE(RPM)MOTOR 1 ADJUSTABLE MOTOR PULLEY FIXED BLOWER PULLEY BELT(NOTCHED)HP FRAME DESIG-NATIONOUTSIDEDIA.(IN.)PITCHDIA.(IN.)BORE(IN.)DESIG-NATIONOUTSIDEDIA.(IN.)PITCHDIA.(IN.)BORE(IN.)DESIG-NATIONPITCHLENGTH(IN.)QTY.3 TON 790/1120 1 1/2 56 1VL40 2.7-3.7 2.4-3.4 5/8 AK61 5.9 5.7 1 A36 37.3 14 TON 790/1120 1 1/2 56 1VL40 2.7-3.7 2.4-3.4 5/8 AK61 5.9 5.7 1 A36 37.3 15 TON 850/1220 1 1/2 56 1VL40 2.7-3.7 2.4-3.4 5/8 AK56 5.4 5.2 1 A36 37.3 11. All motors have solid bases and are inherently protected. these motors can be selected to operate into their service factor because they are locatedin the moving air, upstream of any heating device.TABLE 13: STATIC RESISTANCES1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 30000.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26 0.307-15KW 0.04 0.05 0.06 0.07 0.08 0.10 0.12 0.14 0.16 0.19 0.2220-30KW 0.06 0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.260.06 0.07 0.08 0.09 0.10 0.11 0.12 0.14 0.16 0.19 0.220.08 0.10 0.12 0.14 0.16 0.18 0.20 0.23 0.26 0.29 0.32COOLING ONLY2RESISTANCE, IWGCFMDESCRIPTIONECONOMIZER1 3BOTTOM DUCT CONNECTIONS1ELECTRICHEATERS11. Deduct these resistance values from the available external static pressure shown in SUPPLY AIR BLOWER PERFORMANCE Tables.3. The pressure through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return airduct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.2. Add these resistance values to the available static resistance values on SUPPLY AIR BLOWER PERFORMANCE Tables.TABLE 14: ELECTRIC HEATER CFM LIMITATIONSUNITMODEL SIZE NOMINALTONS VOLTAGEMINIMUM SUPPLY AIR CFMHEATER SIZE NOMINAL KW5 7 10 15 20 303208/230-3-60 1100 1100 1200 1200 1300 -460-3-60 - 1100 1200 1200 1300 -575-3-60 - - 1200 1200 1300 -4208/230-3-60 1300 1300 1300 1300 1300 -460-3-60 - 1300 1300 1300 1300 -575-3-60 - - 1300 1300 1400 -5208/230-3-60 1600 1600 1600 1600 1600 1600460-3-60 - 1600 1600 1600 1600 1600575-3-60 - - 1600 1600 1600 1800