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Фрагмент инструкции
Determine design sensible heat load (Btuh) 3. Determine leaving air temperature (LAT): LAT = DB1 - [(DB1 - WB ) * EFF] where EFF ‘ 0.80 for 8” media or 0.90 for 12” media 4. Determine CFM required: CFM = 0.925 * Sensible Heat Load (T1 - LAT) 5. Determine the cooler(s) required: Refer to the specifi cation / air fl ow charts on next page. 6. Use KoolKalk to account for various losses: This will result in more accurate sizing. Motor Sheave Selection 1. Determine the external static pressure of the air delivery system. 2. Determine the motor (H.P., Voltage and Phase) required to deliver the design airfl ow. 3. Determine the shaft size for the motor selected. Refer to the Electrical Specifi cations chart on facing page. 4. Determine the RPM that will deliver the required airfl ow (CFM) at the static pressure of the system. Refer to the Certifi ed Air Delivery CFM chart for the chosen cooler and selected motor HP. 5. Determine the sheave, and the number of turns open, that is closest to the desired RPM. Refer to the Sheave Selection charts on the next page. Find the selected motor HP, shaft size, and desired RPM (See Steps 2-4 above). You might need to look at more than one sheave before fi nding the correct RPM. 6. Specify the sheave and sheave setting (turns open) for the installer. Ordering When ordering your cooler, you should know this information. • System design static pressure. • Desired air volume at system design. • Electrical power supply available. • Stability of structure to support operating weight of unit. Complete systems consist of the following components, and are sold separately for application versatility. • Cabinet – 1 blower section • Wet media section (1 for 524’s - 2 for 628’s) • Motor • Motor sheave • Pulley-belt kit • Pump (one required for each media section) NOTE: Motor starters, internal wiring and over-current protection are not supplied. DIMENSIONS Certified Air Delivery CFM at Various External Static Pressures Inches Water Gauge. AMCA Licensed Ratings. Operating Model Weight BHP Belt information Quantity Down Side Up .0 .0 CFM RPM .1 .1 CFM RPM .2 .2 CFM RPM 524 with DM080 or 960 with UM080 — 8” Media 560 . 1 AX78 AX80 6390 298 6070 310 5710 320 570 1 1 AX78 AX80 7030 329 6760 339 6420 349 575 1. 1 AX78 AX80 8050 376 7810 385 7530 394 580 2 1 AX78 AX80 8860 414 8640 422 8400 430 590 3 1 AX78 A82* 9050 422 9050 440 9050 459 524 with DM120 or 960 with UM120 — 12” Media 600 . 1 AX78 AX80 6250 298 5900 309 5550 321 610 1 1 AX78 AX80 6880 328 6560 338 6250 349 615 1. 1 AX78 AX80 7880 376 7600 384 7320 393 620 2 1 AX78 AX80 8670 414 8420 421 8160 429 630 3 1 AX78 A82* 9050 422 9050 439 9050 458 628 with two DM080 or 980 with two UM080 — 8” Media 818 1 1 A95* A95* A95 9720 214 9320 224 8650 235 823 1. 1 A95* A95* A95 11130 245 10720 254 10230 263 828 2 1 A95* A95* A95 12250 270 11890 278 11460 286 838 3 2 A97 A97 A95 14020 309 13720 316 13350 323 858 5 2 A97 A97 A95 16620 367 16390 371 16080 378 898 7. 2 A100* A100* A95 18100 ...
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