Heatcraft Refrigeration Products HCS manual

Air Handlers T ech Bulletin F or Air Conditioning , Heating and V entilation A v ailable in Bohn™, Climate Contr ol™, Chandler™ & Larkin™ Bulletin AH-TB January 2011 (Replaces AH-91C) Models HCS, HCL VCS, HD Size 03 thru 75[...]

2 Quick Cues for the v e cabinet styles: S = SHORT in model HCS L = LONG in model HCL V = VERTICAL in model VCS HD = HEA TING DUTY in model HD VCS MODELS 03 - 41 11 Standard Models Capacities F rom 1000 to 24000 CFM Index F eatures, A ccessories 3 - 10 Performance, Selection 11 - 23 F an Data 24 - 29 Dimensional Data 29 - 38 W eight 39 Static, A[...]

3 Nomenclature HCL 0 6 F C Cabinet style Fan T ype: HCS — (S for Short) Insulated fan section with motor FC - F or ward curved fans, available base and access door(s), horizontally adjacen t (same with all cabinet styles, sizes 3 thru 41 elevation) with insulated short depth coil section with drain pan. AF - Air foil type fans, av ailable with si[...]

4 Air Foil Fans Forward Curved F ans Motor Mount Heatcraft puts the motor inside the fan section cabinet. It is mounted on a heavy gauge steel slide rail base. There are se veral advantages with internal motor location. It eliminates the need for a bulk y belt guard. Another advantage is that Heatcraft balances the factory mounted motor and dri ve [...]

5 W ater Coils A wide range of choices leads to the best coil selection for each particular job . Select water cooling coils from 4, 5, 6, or 8 ro w coil depth options. Select water heating coils from 1, 2, or 3 ro w coil depth options. All water coils offer fiv e fin densities (6, 8, 10, 12, or 14 FPI). Specify either 1/2" (T ype A) or 5/8&[...]

6 1. T otal KW Needed Approximate KW = 2. Number Of Steps Recommended Rule of thumb for calculating the recommended number of steps required. Use Step A or B below , whiche ver is higher . A. Number of Steps = (Based on approx. 10°F . temp. rise per step) B. Number of Steps = CFM x TD (F) 3000 300 x T otal Heater KW CFM T otal Heater KW Maximum KW[...]

7 1. Automatic thermal cutout 2. Heat limiters 3. Air flo w switch The standard electric heater section construction T ypical options for the electric heater includes: section are: Maximum KW per contactor and per fuse block (at least one contactor is required per step of heating): Notes: 1. Y ou must order the split shipment of the f an and coil [...]

8 Accessories Face and Bypass Dampers Face And Bypass Dampers For damper applications, choose either the internal face and bypass section or the external face and bypass section. If used with a large coil the damper section must be the e xternal face and bypass damper type. When used with a small coil, select the internal face and bypass damper sec[...]

9 Flat and High Capacity Filter Sections- All Unit Sizes: (Dimensions, Page 29 to 37) High Ef feciency Filter Sections- All Unit Sizes: (Dimensions, Page 29 to 37 ) Auxilary Sections- All unit Sizes: (Dimensions, Page 29 to 37) Accessories Filters And Auxiliary Sections (see pages 42 and 43 for number and quantity of filters per model) 2" fl[...]

10 * The percentage means the belts can handle an e xtra 20% or 50% BHP . A vailable on: A v ailable on: Accessories for F an and Coil Sections Fan Section Accessory: Forward curv ed blo wer for total static of 3.5" to 6" ........................................................................Models 03 - 18 for all cabinet styles Internal[...]

11 Air Handler Selection 1. Air handler selections v ary with each application. Use the index belo w to find Heatcraft Products air handler performance tables for: • Standard comfort cooling (either direct expansion or chilled water) • Heating (either steam or hot water, either mak e up air or return air) • Supermarket air conditioning (dire[...]

Selection Procedure: 12 1. Which air handler for cooling performance? Look at inde x of air handler performance on page 11. Find that tables 6 through 9 gi ve chilled w ater performance. Y ou need 35 tons or 35 x 12 = 420 MBH Compare 1/2" and 5/8" and 4 r ow and 6 r ow perf ormance: Select size 20 air handler with six row 1/2" tube c[...]

13 T able 1 Heating and Cooling Performance for Selected Coils At 500 FPM (2.54 m/s) and 10 FPI. See notes for coil descriptions and rating conditions. N o t e s Note 1 - Air volume in CFM and cubic meters per hour for air speed of 500 fpm or 2.54 meter per second through a large f ace area 1/2" tube diameter (T ype A) coil for each air handle[...]

14 SST = Saturated Suction T emperature All coils ha ve single refrigerant distrib utors unless noted as belo w: MBH = BTU per Hour in Thousands ^ These selections require two circuits. Sens. = Sensible Capacity ^^ These selections require three circuits. * These selections require four circuits. ** T o estimate performance of coils at other than 1[...]

15 SST = Saturated Suction T emperature All coils hav e single refrigerant distributors unless noted as belo w: MBH = BTU per Hour in Thousands ^ These selections require two circuits. Sens. = Sensible Capacity ^^ These selections require three circuits. Face Area in square feet * These selections require four circuits. ** T o estimate performance [...]

16 CFM Coil 42°F . Entering W ater 44°F . Entering W ater 45°F . Entering W ater Unit Std F ace MBH MBH MBH Size Air Area T O T AL SENS GPM PD TO T AL SENS GPM PD TO T AL SENS GPM PD 03 1565 3.13 51 37 10.2 2.4 46 35 9.1 1.9 43 34 8.6 1.7 06 2880 5.76 105 73 20.9 8.8 94 69 18.8 7.2 89 67 17.7 6.5 08 3905 7.81 139 98 27.8 7.6 125 92 25.0 6.3 118 [...]

17 GPM = Gallons per minute PD = W ater pressure drop in feet of water ^ These selections ha ve tw o fluid circuits. All the other MBH = BTU per Hour in Thousands selections have a single fluid circuit. Sens. = Sensible Capacity * T o estimate performance of coils at other than 10 FPI or at other air speeds or with other water or air temperatures[...]

18 T able 10 Heating 0°F . Air* Heating, W ater 1/2" tube, entering air at 0°F . 1/2" tube, hot water , heating capacities 10 FPI*, large coils, 500 FPM* T able 11 Heating 0°F . Air* Heating, W ater And 5/8" tube, entering air at 0°F . Steam T ype 5**, hot water , heating & steam capacities 10 FPI*, large coils, 500 FPM* GPM [...]

19 W ater Heating Coils Steam Coils^^ CFM Face 180°F . Entering W ater 200°F . Entering W ater CFM One T wo Unit Std Area One Row T wo Ro w One Row T wo Row Std Row Row Size Air Sq. Ft. MBH GPM PD MBH GPM PD MBH GPM PD MBH GPM PD Air MBH MBH 03 1500 3.00 65 10.0 3.9 101 10.0 1.8 76 10.0 3.8 119 10.0 1.8 1375 93 148 06 2844 5.69 125 18.5 8.7 195 1[...]

20 Heat Reclaim Coil Selection Example: Select reclaim coil for Size 26 air handler at 13280 CFM, 344 MBH reclaimed at 45°F . T emperature Difference. A. Change the application’ s requirement at application’ s TD to adjusted requirement at 50°F . TD. Use T able 15: 344/0.9 = 382.2 MBH (adjusted) B. Di vide the adjusted MBH by the coil face ar[...]

21 ENT AIR T able 18: Capacity Correction Factors* T o Coil Performance Of 67°F Wb And 40°F Evaporating Ent Air WB Refrigerant Ev aporating T emperature °F . T emp. °F . 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 60 0.820 0.794 0.768 0.740 0.713 0.685 0.656 0.628 0.598 0.568 0.538 0.506 0.475 0.442 0.409 0.376 61 0.862 0.837 0.810 0.783 0.[...]

22 * Note: correction factor = (enthalpy of air temperature - enthalp y of water temperature) in BTU /LB di vided by 13.97. Capacity Correction Factors* T o Coil Performance Of 67°F . Wb Air And 45 Entering W ater Ent Air WB Entering W ater T emperature °F . TEMP . °F . 40 41 42 43 44 45 46 47 48 49 50 60 0.805 0.782 0.736 0.702 0.666 0.630 0.59[...]

23 FPM, T ype A Coils (1/2" DIA.) FPM, T ype 5 Coils (5/8" DIA.) Rows FPI 400 500 600 650 700 400 500 600 650 700 6 11.2 12.7 14.0 14.6 15.2 15.1 17.0 18.5 19.3 20.0 8 14.2 16.0 17.6 18.3 19.0 18.8 20.9 22.8 23.7 24.5 1 10 17.1 19.2 21.0 21.9 22.7 21.9 24.4 26.6 27.5 28.4 12 19.9 22.3 24.4 25.3 26.2 24.6 27.4 29.9 30.9 31.9 14 22.7 25.4 2[...]

24 Fan Performance Size 03 9" Forward Curved F an CFM Coil T otal Static Pressure - Inches Of W ater Std. V el. 0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50 Air FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1200 383 848 0.23 1141 0.40 1273 0.50 1403 0.62 1530 0.75 1643 0.87 1747 0.99 1843 1.12 1300 415 862 0.26 1149 0.44 1274 [...]

25 Size 10 Size 10 Fan Performance Size 08 15" Forward Curved Fan CFM Coil T otal Static Pressure - Inches Of W ater Std. V el. 0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50 Air FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 2700 346 510 0.47 685 0.80 763 0.97 838 1.11 908 1.22 976 1.33 1041 1.47 1103 1.63 3000 384 524 0.56 691 [...]

26 Size 14 and Size 18 Size 12 Maximum ODP Motor Frame Size for Models 14 & 18 — 254 T Medium Pressure Fan Must Be Used Coil Face V elocity is for a Large Cooling Coil, T ype A (1/2" Tube Diameter) When Operating in Shaded Area Size 14 and Size 18 Fan Performance Size 12 18" Forward Curved F an CFM Coil T otal Static Pressure - Inch[...]

27 Fan Performance Size 34 25" Forward Curved F an CFM Coil T otal Static Pressure - Inches Of W ater Std. V el. 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 Air FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 9000 267 680 5.30 744 6.47 800 7.71 851 9.00 899 10.34 943 11.74 985 13.18 10000 297 679 5.82 746 7.05 804 8.34 857 9.68[...]

28 Maximum ODP Motor Frame Size for Models 41 — 324 T Fan Performance Size 41 30" Forward Curved Fan CFM Coil T otal Static Pressure - Inches Of W ater Std. V el. 0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50 Air FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 17000 418 265 3.07 348 4.81 383 5.65 416 6.50 447 7.37 477 8.29 506 [...]

29 22" Section accommodates 2" prefilter and up to an additional 12" of high efficienc y final filter 28" Section accommodates 2" prefilter and up to an additional 21" of high efficienc y final filter 44" Section accommodates 2" prefilter and up to an additional 37" of high efficienc y final ?[...]

30 Sizes 03 - 18 Sizes 20 - 41 Accessory Flange Pattern Sizes 50 - 75 Dimensions Size A B C D 50 117 3/4 74 3/4 4 7/8 7 3/8 65 133 3/4 82 3/4 6 7/8 5 3/8 75 133 3/4 94 3/4 6 7/8 5 3/8 Notes - Sizes 03 Through 75: Accessory hole patterns apply to both the inlet and outlet of all the following sections: Coil sections. Flat and high efficiency filte[...]

31 Dimensions Model VCS Sizes 03 - 41 FC For All Unit Sizes R** W 22" 6 28" 8 44" ** See page 29 for high efficiency filter section height and width. Arrangements A vailable: Sizes 03 through 18 — Arrangements 1, 2, 3, 4, 5, 6.^^ Sizes 20 through 41 — Arrangements 2, 3, 4, 5.^^ A B C D E F* G H* J K L M^^ N Unit air handler air[...]

32 A B C D E F* G H* J^ K L Unit air handler air handler air handler depth fan section fan outlet fan outlet fan outlet fan outlet discharge external internal Size width height‘ HCS cabinet HCL cabinet depth height locator width locator arr 3 & 4 F&BP F&BP 03 39 25 1/4 45 51 7/16 — 10 1/4 18 1/8 11 7/8 9 1 1/2 6 1/4 7 3/4 06 52 28 1[...]

33 Models HCS and HCL Sizes 50 - 75 AF For All Unit Sizes R** W 22" 6 28" 8 44" ** See page 29 for high efficiency filter section height and width. Dimensions Notes: Motor and connection locations (R.H. or L.H.) determined when facing the front of the unit, with the air blowing through the coil and into observ er’ s face. Floor o[...]

34 Models HD Sizes 03 - 41 FC Arrangements A vailable: ** See page 29 for high efficiency filter section height and width. Sizes 03 through 18 — Arrangements 1, 2, 3, 4. 5, 6.^^ Sizes 20 through 41 — Arrangements 1, 2, 3, 4.^^ Dimensions For All Units Sizes T R** W 1 & 2 rows 6 3/8 22 6 3 & 4 rows 10 1/8 28 8 6 rows 12 5/8 44 8 Rows 1[...]

35 MODELS HD Sizes 50 - 65 AF T Dimensions Notes: Motor and connection locations (R.H. or L.H.) For All Units Sizes determined when facing the front of the unit, with the T R** W air blowing through the coil and into observ er’ s face. Floor or platform mounting only . Ceiling suspension is not av ailable. 1 & 2 rows 6 3/8 22 6 Electric Heat:[...]

36 A* C D F L N P air handler air handler air handler inter- face and bypass dampers high Mixbox UNIT centers overall edge to edge depth extreme center to center depth mediate section, overall depth capacity filter SIZE width HCS HCL VCS HCS HCL VCS center internal external or access 03 40 45 51 7/16 28 11/16 43 1/2 49 15/16 27 3/16 —— 7 3/4 8[...]

37 All dimensions are in inches. Mixbox Section Dimensions Models HD Sizes 03 - 65 Mounting Locations For V ibration Isolators For All Unit Sizes Al l mounting holes are : 5/8 inch diameter . T** R W 1 & 2 rows** 6 3/8 22 2 inch filters 6 3 & 4 rows 10 1/8 28 4 inch filters 8 6 rows 12 5/8 44 8 Rows 15 5/8 ** One and two ro w heating coil[...]

38 Models Models Models HCS - HCL- VCS HCS - HCL HCS - HCL - VCS A i r F l o w Dimensions Order either rubber in shear (RIS) or 1" deflection spring isolators as accessories. Isolators are shipped loose, see pages 36 and 37 for isolator location points, see page 3 for ceiling versus platform mounting per unit size: Cabinet types Unit size Qua[...]

39 T A= Throw a way type filters AF= Airfoil Fan FC= Forward Curv ed fan Double wall construction add 45% to fan & Coil section or accessory Net W eights and Metal Gauges Air Handler Component Unit Size W eight in pounds 03 06 08 10 12 14 18 20 26 34 41 50 65 75 HCS short FC 290 430 500 550 650 790 816 836 968 1188 1386 Fan HCS short AF 946 11[...]

40 Face Areas- Air Pressure Drops, Dry Coils Face Area of Coils, And Filters ( Used to Compute V elocity for Air Pressure Drop) Face Area Air Handler Unit Size Square Feet 03 06 08 10 12 14 18 20 26 34 41 50 65 75 Steam coils: Large T ype 5 Coils 2.75 5.28 7.50 9.38 11.69 13.75 16.88 19.25 25.50 34.00 40.38 47.25 —— —— Large T ype 8 Coils ?[...]

41 Air Pressure Drops- Cabinets, Filters, W et Coils Cabinet And Filter Air Pressure Drop Air Pressure Drop - inches of w ater Air V elocity^ - Feet per minute Component 200 250 300 350 400 450 500 550 600 Cabinet: V Style Cabinet^^ — — — .10 .13 .16 .20 .24 .29 Economizer Section^^ — — .02 .03 .03 .04 .05 .06 .07 Filters: Thro wa way 2&q[...]

42 ^ The steam coils in models 65 and 75 are not type 5. They are type 8 coils with 1" diameter tubes on 3" centers. * The CFM range for cooling and heating starts at a low of about 400 fpm through small coil . The maximum CFM for cooling is at no more than 550 fpm through a large coil. The maximum CFM for heating is at no more than 900 f[...]

43 ^ The steam coils in models 65 and 75 are not type 5. They are type 8 coils with 1" diameter tubes on 3" centers. * The CFM range for cooling and heating starts at a low of about 400 fpm through small coil. The maximum CFM for cooling is at no more than 550 fpm through a large coil. The maximum CFM for heating is at no more than 900 fp[...]

Heatcr aft Refrigeration Products, LL C 2175 W est Park Plac e Blvd., Stone Mountain, GA 30087 P: (800) 321-1881 • www.hea tcraftrpd.com The name behind the brands y ou trust. Mechanical Specification General Provide a air handler of sound materials construction and design. Frame mem- bers, structural bases and all casings parts are fabricated f[...]