York WJ 180 Technical Manual

Also see for WJ 180: Installation manual

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York WJ 180 Technical Manual Manual pdf 9 page image

262291-YTG-F-1009Johnson Controls Unitary Products 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 RATING 1UNITSIZE 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 8,000WJ180 6,000 1.00 1,080 4.60 99 99 89 82 84 77 72 67 89 56WJ240 8,000 1.00 1,120 6.65 102 102 92 85 87 80 75 70 92 59WJ300 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 11. Certified in accordance with the Unitary Large Equip-ment certification program AHRI Standard 340/360 (for-merly ARI 340/360). (Does Not Include WJ300*Models).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 3COOLING ONLYWJ180C00 180 12.3 13.6WJ240C00 240 11.5 12.3WJ300C00 300 10.4 11.3COOLING WITH GAS HEATWJ180N/S 180 12.3 13.6WJ240N/S 240 11.5 12.3WJ300N/S 300 10.4 11.3COOLING WITH ELECTRIC HEATWJ180E18 180 12.3 13.6WJ180E36 180 12.3 13.6WJ180E54 178 12.1 13.3WJ180E72 178 12.1 13.3WJ240E18 240 11.5 12.3WJ240E36 240 11.5 12.3WJ240E54 238 11.3 12.0WJ240E72 238 11.3 12.0WJ300E18 300 10.4 11.3WJ300E36 300 10.4 11.3WJ300E54 298 10.2 11.1WJ300E72 298 10.2 11.13. IPLV = Integrated Part Load Value.TABLE 3: GAS HEAT RATINGSMODEL MBH INPUT MBH OUTPUTWJ180N/S24 300 240WJ180N/S32 400 320WJ240N/S24 300 240WJ240N/S32 400 320WJ300N/S24 300 240WJ300N/S32 400 320For units with VFD and electric or gas heat, thespeed of the indoor blower motor continues to becontrolled by duct static pressure via the VAV con-trol board.If there are VAV boxes present in the duct system,the boxes must be driven to the full-open positionusing a customer-supplied power source to assureadequate airflow across electric heating elements orgas heat exchanger tubes.