York DM 180 Technical Manual
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Contents
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262259-YTG-B-0107Unitary Products Group 9NOTE: All gas units are two-stage heating.First stage is 50% of total.S.S.E. = Steady State Efficiency (80%) - output divided by input.TABLE 1: SOUND POWER RATING1UNITSIZE CFMESP BLOWER SOUND POWER (db 10 -12 Watts)Octave Band Centerline Frequency (Hz) SWLdB(A)dB(A)@10Ft. 2IWG RPM BHP 63 125 250 500 1,000 2,000 4,000 8,000180 6,000 1.00 1,080 4.60 99 99 89 82 84 77 72 67 89 56240 8,000 1.00 1,120 6.65 102 102 92 85 87 80 75 70 92 59300 10,000 1.30 1160 12.5 108 108 98 91 93 86 81 76 98 651. These values have been accessed using a model of sound propagation from a point source into the hemispheric\free field. ThedBA values provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fanmanufacture has no way of knowing the details of each system. This constitutes and expectation to any specification or guaranteerequiring a dBA value or sound data in any other form than sound power level ratings.2. At a distance of 10 feet from the blower.TABLE 2: CAPACITY RATINGS - (ARI 360)11. Certified in accordance with the Unitary Large Equip-ment certification program which is based on ARI Stan-dard 340/360.MODEL MBH EER 22. EER = Energy Efficiency Ratio at full load - the coolingcapacity in Btu’s per hour (Btuh) divided by the powerinput in watts, expressed in Btuh per watt (Btuh/watt).IPLV 33. IPLV = Integrated Part Load Value.COOLING ONLYDM180C/E00 176 8.7 9.2DM240C/E00 234 8.6 8.05DM300C/E00 272 8.5 9.2COOLING WITH GAS HEATDM180N/S 176 8.5 9.0DM240N/S 232 8.5 8.05DM300N/S 272 8.5 9.0COOLING WITH ELECTRIC HEATDM180E18 176 8.7 9.2DM180E36 176 8.6 9.1DM180E54 174 8.5 8.7DM180E72 174 8.5 8.7DM240E18 234 8.5 8.05DM240E36 234 8.5 8.05DM240E54 232 8.5 8.05DM240E72 232 8.5 8.05DM300E18 272 8.5 9.1DM300E36 272 8.5 9.1DM300E54 270 8.5 9.0DM300E72 270 8.5 9.0TABLE 3: GAS HEAT RATIINGSMODEL MBH INPUT MBH OUTPUTDM180N/S24 300 240DM180N/S32 400 320DM240N/S24 300 240DM240N/S32 400 320DM300N/S24 300 240DM300N/S32 400 320For units with VFD and electric or gas heat, thespeed of the indoor blower motor continues tobe controlled by duct static pressure via theVAV control board.If there are VAV boxes present in the duct sys-tem, the boxes must be driven to the full-openposition using a customer-supplied powersource to assure adequate airflow across elec-tric heating elements or gas heat exchangertubes. |
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