York DF 072 Technical Manual
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Contents
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254599-YTG-C-0807Unitary Products Group 11TABLE 8: SUPPLY AIR BLOWER PERFORMANCE (6 TON BELT DRIVE) - SIDE DUCT APPLICATIONUnitTonnageMotorSpeedAvailable External Static Pressure - IWG 11. Includes allowances for a wet evaporator coil, 1” filters, and the heat exchangers. Refer to STATIC RESISTANCESTable for resistance values.0.2 0.3 0.4 0.5 0.6CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts6 22. Side Duct application (230 Volts)Hi 2256 883 2258 931 2247 950 2223 964 2182 979Med/Hi 2145 771 2127 784 2119 808 2089 826 2051 844Med 2020 637 1999 656 1985 675 1947 696 1910 715Med/Low - - - - - - - - - -Low - - - - - - - - - -UnitTonnageMotorSpeedAvailable External Static Pressure - IWG 10.7 0.8 0.9 1.0CFM Watts CFM Watts CFM Watts CFM Watts62Hi 2125 971 2044 940 1958 898 1864 854Med/Hi 2014 859 1965 861 1896 843 1801 806Med 1876 730 1832 740 1793 756 - -Med/Low - - - - - - - -Low - - - - - - - -TABLE 9: 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 10: ELECTRIC HEATER CFM LIMITATIONSUNIT MODEL SIZE NOMI-NAL TONS VOLTAGEMINIMUM SUPPLY AIR CFMHEATER SIZE NOMINAL KW5 7 10 15 20 306208/230-3-60 1800 1800 1800 1800 1800 1800460-3-60 - 1800 1800 1800 1800 1800575-3-60 - - 1800 1800 1800 1800 |
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