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optional cooling coil cabinet with dx or chilled ... - Agencespl.com

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Table 5A. Heating and Cooling Airflow Ranges - “B” Cabinet ModelsCoolingStandardHeating Actual AirflowAirflowMaximumWith Model RPB Model RGB Model CRGB (550 SFPM)Furnace Maximum Minimum Maximum Minimum Maximum Minimum (2.8 M/s)Size acfm aM 3 /hr acfm aM 3 /hr acfm aM 3 /hr acfm aM 3 /hr acfm aM 3 /hr acfm aM 3 /hr scfm sM 3 /hr75 - - - - 720 1,223 600 1,019 740 1,257 615 1,045H75 - - - - 2,645 4,494 705 1,198 2,750 4,672 785 1,3342,780 4,723100 - - - - 940 1,597 780 1,325 940 1,597 775 1,317H100 - - - - 3,400 5,776 940 1,597 3,175 5,394 940 1,5972,780 4,723125 1,230 2,090 1,025 1,741 1,175 1,996 980 1,665 1,170 1,988 965 1,639H125 3,800 6,456 1,230 2,090 3,800 6,456 1,175 1,996 3,570 6,065 1,170 1,9882,780 4,723150 1,480 2,514 1,230 2,090 1,410 2,396 1,175 1,996 - - - -H150 4,700 7,985 1,480 2,514 4,700 7,985 1,410 2,396 - - - -3,780 6,422175 1,725 2,931 1,440 2,446 1,645 2,795 1,370 2,328 1,570 2,667 1,290 2,192H175 5,000 8,495 1,725 2,931 5,000 8,495 1,645 2,795 4,450 7,560 1,570 2,6673,780 6,422200 1,975 3,355 1,645 2,795 1,880 3,194 1,565 2,659 - - - -H200 5,100 8,665 1,975 3,355 5,100 8,665 1,880 3,194 - - - -4,670 7,934225 2,220 3,772 1,850 3,143 2,115 3,593 1,765 2,999 2,095 3,559 1,725 2,931H225 5,150 8,750 2,220 3,772 5,150 8,750 2,115 3,593 4,750 8,070 2,095 3,5594,670 7,934250 2,465 4,188 2,055 3,491 2,350 3,993 1,960 3,330 2,335 3,967 1,940 3,296H250 5,800 9,854 2,465 4,188 5,800 9,854 2,350 3,993 5,500 9,344 2,355 4,0016,180 10,499300 2,960 5,029 2,465 4,188 2,820 4,791 2,350 3,993 2,825 4,800 2,330 3,959H300 6,300 10,703 2,960 5,029 6,300 10,703 2,820 4,791 5,890 10,007 2,825 4,8006,180 10,499350 3,455 5,870 2,880 4,893 3,295 5,598 2,745 4,664 3,300 5,607 2,715 4,613H350 6,800 11,553 3,455 5,870 6,800 11,553 3,295 5,598 6,415 10,899 3,300 5,6077,190 12,215400 3,950 6,711 3,290 5,590 3,765 6,397 3,135 5,326 3,770 6,405 3,105 5,275H400 7,100 12,063 3,950 6,711 7,100 12,063 3,765 6,397 6,635 11,273 3,770 6,4058,200 13,931Table 5A. Heating and Cooling Airflow Ranges - “BL” Cabinet ModelsModels (C)RGBL, RPBL, SSCBL, PGBLCoolingStandardHeating Actual Airflow AirflowMaximumWith Maximum Minimum (550 SFPM)Furnace(2.8 M/s)Size acfm aM 3 /hr acfm aM 3 /hr scfm sM 3 /hr400 14,000 23,785 3,300 5,607 8,200 13,931500 12,000 20,387 3,700 6,286 6,180 10,499600 12,500 21,237 4,450 7,560 6,180 10,499700 13,500 22,936 5,200 8,835 7,190 12,215800 13,500 22,936 5,900 10,024 8,200 13,9311050 13,500 22,936 6,500 11,043 7,190 12,2151200 13,500 22,936 7,400 12,572 8,200 13,931Using the Coil Perf<strong>or</strong>mance Tables (Tables 6, 7, 8, and 9)The perf<strong>or</strong>mance data tables on the following pages can be used todetermine if a Rezn<strong>or</strong> <strong>coil</strong> is available to meet your requirements. Follow thesteps below bef<strong>or</strong>e submitting a Coil Option Specification Request F<strong>or</strong>m.The preferred method of selection is to use the Rezn<strong>or</strong> Coil SelectionSoftware. If you do not have a copy, contact your Rezn<strong>or</strong> Representative.Steps:1. Enter the Table f<strong>or</strong> your <strong>cooling</strong> application – Refrigerant Coils, R22 -Table 6 <strong>or</strong> 7; Chilled Water Coils - Table 8 <strong>or</strong> 9.2. Choose the table which best matches your entering air conditions. Tables6 and 8 are f<strong>or</strong> the condition of 80°F db / 67°F wb. This is a standard <strong>coil</strong>rating condition f<strong>or</strong> return air applications. All Rezn<strong>or</strong> <strong>coil</strong>s are rated toARI Standard 410. Tables 7 and 9 are f<strong>or</strong> the condition of 95°F db / 75°Fwb. This is an accepted general condition f<strong>or</strong> 100% outside air applications.If your design condition is different from these <strong>or</strong> your operatingparameters vary from those specified, you can only estimate perf<strong>or</strong>mancefrom these data tables.3. Find your furnace model in the left-most column of the table.F<strong>or</strong>m RZ-NA-C-PO Page 43Page _____ of _____Notes f<strong>or</strong> Tables 5A and B:1) Calculate Coil Face Velocity as : [Airflow (scfm [sM 3 /hr]) / Finned Coil Surface Area (sq.ft. [M 2 ])]2) A general rule of thumb f<strong>or</strong> required airflow is 400 scfm (680sM 3 /hr) per ton of <strong>cooling</strong>f<strong>or</strong> return air applications. This value will be much less f<strong>or</strong> outside air applications.3) To avoid the possibility of condensate blow-off, the <strong>coil</strong> face velocities should not exceed550 sfpm.4) Conversion to standard air flow is required above 1500 ft. To convert from actual airflow(acfm) to standard airflow (scfm), see Conversion to Standard Airflow.5) If the <strong>coil</strong> <strong>cabinet</strong> is being <strong>or</strong>dered <strong>with</strong> an indo<strong>or</strong> unit (Model SSCBL <strong>or</strong> PGBL), contactyour Sales Representative f<strong>or</strong> details on the required field-supplied transition.4. The table contains capacities at the minimum and maximum suggestedairflow f<strong>or</strong> each furnace model, see column 2.Your airflow in Standard CFM (SCFM) should fall <strong>with</strong>in this range. SeeConversion to Standard Airflow to determine scfm from the actualairflow (ACFM). ACFM should be used when selecting fan and mot<strong>or</strong>requirements.F<strong>or</strong> <strong>coil</strong> selections the imp<strong>or</strong>tant parameter is not the volume of air over the<strong>coil</strong>, but the mass flow over the <strong>coil</strong>. This requires knowledge of thevolume flow at “standard conditions” (SCFM).5. Determine the maximum capacity available from a specific <strong>coil</strong> by enteringthe Table and finding the total capacity (mbh) f<strong>or</strong> a 6 row, 12 fins per in(fpi) <strong>coil</strong> at maximum airflow (scfm). If your application if less than thepublished capacity f<strong>or</strong> the design conditions, use the Selection Requirementssection to <strong>com</strong>plete your request f<strong>or</strong>m. If your application requiresa <strong>coil</strong> capacity greater than determined above, you may require a largerfurnace and ac<strong>com</strong>panying <strong>coil</strong> <strong>cabinet</strong> to achieve the necessary <strong>coil</strong> size.Your Sales Representative will be able to assist you in this selection.

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