York SUNLINE 2000 D3CE 036 Installation Instruction

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York SUNLINE 2000 D3CE 036 Installation Instruction Manual pdf 14 page image

NOTE: The tubes must be inserted and held in a positionperpendicular to the air flow so that velocity pres-sure does not affect the static pressure readings.3. Using an inclined manometer, determine the pressure dropacross a dry indoor coil. Since the moisture on an indoorcoil may vary greatly, measuring the pressure drop acrossa wet coil under field conditions would be inaccurate. Toassure a dry coil, the compressors should be de-energizedwhile the test is being run.4. Knowing the pressure drop across a dry coil, the actualairflow through the unit can be determined from the curvein Figure 7.WARNING: Failure to properly adjust the total system air quan-tity can result in poor system performance.After readings have been obtained, remove the tubes andreplace the dot plugs in the side panels. Eight millimeter (5/16")dot plugs (P/N 029-13880) are available through normal partsordering procedures.NOTE: DE-ENERGIZE THE COMPRESSORS BEFORETAKING ANY TEST MEASUREMENTS TO ASSUREA DRY INDOOR COIL.0.60.48 11 14 17 20 23 26DCE0360.50.30.20.10.0DCE048 DCE060,076NOMINAL CFM (HUNDREDS)PRESSURE DROP (IWG)149124997450250NOMINAL M3/S0.38 0.52 0.66 0.80 0.94 1.08 1.23PRESSURE DROP (PA)FIG. 7 - PRESSURE DROP ACROSS A DRYEVAPORATOR COIL VS SUPPLY AIRFLOWSECURE OWNER’S APPROVAL:When the system is functioning properly, secure the owner’s approval. Show himthe location of all disconnect switches and the thermostat. Teach him how to start and stop the unit and how to adjust tem-perature settings within the limitations of the system.MAINTENANCENORMAL MAINTENANCEWARNING: Prior to any of the following maintenance proce-dures, shut off all power to the unit to preventpersonal injury.FILTERS - Inspect once a month. Replace disposable or cleanpermanent type as necessary. DO NOT replace permanenttype with disposable filters.MOTORS - Indoor fan and outdoor fan motors are permanentlylubricated and require no maintenance.OUTDOOR COIL - Dirt should not be allowed to accumulateon the outdoor coil surface or other parts in the air circuit.Cleaning should be as often as necessary to keep coil clean.Use a brush, vacuum cleaner attachment, or other suitablemeans. If water is used to clean coil, be sure power to the unitis shut off prior to cleaning.NOTE: Exercise care when cleaning the coil so that the coilfins are not damaged.Do not permit the outdoor air discharge to be obstructed byoverhanging structures or shrubs.530.26-N1YI14 Unitary Products Group

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