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Make-up Air & Side Intake Filtered Supply Centrifugal Fans, MA-Series TABLE OF CONTENTS 3 Introduction, Certifications & Listings 4 Features & Benefits 5 Direct Drive Dimensional & Performance Data 6 Belt Drive Dimensional & Performance Data 9 Engineering Specifications YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES INTRODUCTION Direct Drive Units YORK® by Johnson Controls MA-Series replaces foul or contaminated air that is removed by a building’s exhaust system. Such make-up air is so essential that it is part of safety and building code requirements for commercial kitchens, chemical laboratories, electrical control rooms and where gas equipment is installed. Proper make-up air provisions should be part of every building plan. Model MAF Without adequate make-up air, air starvation can create negative pressures within a structure. Doors open with difficulty. Dirt, insects, and debris are drawn in through entrances. Fumes and odors accumulate. Pilot lights operate erratically. Moisture is sucked in through cracks in roofs and walls and around windows and doors. Air becomes stale. Backdrafts occur. Air handling systems operate ineffectively, inefficiently, and expensively. Heated or cooled air is wasted when make-up air is not properly considered. On the other hand, uncontrolled air flow through windows and doors creates drafts; admits moisture, dust, dirt, and pollen; and lets heat escape. The ability of the MA-Series to regulate air flow assures proper replacement air volume under varying conditions. Units can be coordinated to match the exhaust velocity required to remove fumes, vapors, and grease while providing sufficient oxygen to feed the system effectively. Belt Drive Units Larger belt drive models extend the range of the MA-Series. Now clean air volumes above 14,400 CFM can be supplied to replace exhausted air and fumes. Blowers are efficient, double inlet, forward-curved design in strong, die-formed steel housings. Variable pitch pulley allows adjustment in RPM for more precise regulation of air flow. Motor, belts, pulleys and other components form a dependable, durable and quiet-operating assembly easily balanced to meet system requirements. MAF Models The housing’s louvered sides permit a direct air path, giving the housing a low profile to the roof. Cleanable, permanent filters back-up each louvered side to prevent airborne contaminants from entering. Filters are easily removed for cleaning. An integral mounting base permits easy installation on a roof curb. Roof curbs speed, simplify, and coordinate installation of roofmounted supply and exhaust equipment. YORK® by Johnson Controls offers an extensive variety of curbs for mounting on flat and sloped roofs. Model MAS Model: MAF • Static pressure up to 1.0” wg. • Direct Drive - Flow capacity up to 3,730 CFM • Belt Drive - Flow capacity up to 14,426 CFM Model: MAS (Side Intake) • Static pressure up to 1.5” wg. • Belt Drive - Flow capacity up to 12,721 CFM CERTIFICATIONS & LISTINGS AMCA Certification YORK® by Johnson Controls certifies that the MA-Series models shown on pages 6 and 7 are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program. UL and cUL Certification MA-Series fans carry the UL label, UL705 (ZACT/ZACT7), file #E28413. 3 YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES FEATURES & BENEFITS Easy Installation Safety Disconnect Switch The base/curb cap is free of protruding fasteners which would interfere with installation onto the curb. Safety disconnect switches are available to allow positive electrical shut-off and safety. Switches are factory mounted when factory wiring is requested. Wiring is only run from the motor to the junction box. (Factory wiring of explosion proof applications is not available.) A wide range of Nema rated enclosures with disconnect switches are available for indoor, outdoor, and explosion proof installations. Disconnects are to be field wired by a licensed electrician. Easy Maintenance Access A full-size insulated (MAS model only) cover is easily removed via adjustable heavy duty, quick-release latches (MAS model only), providing clear access to all components. The gasket is installed in the cover, not the housing, so it is not damaged during maintenance. Structural Integrity The galvanized housing provides a high degree of rigidity and weather protection by bending and overlapping all seams. Additional angle reinforcement is provided along the interior base, providing stiffness to the walls and support of the unit on the curb. The housing cover is gasketed with thick closed cell neoprene and “pitched” to ensure complete rain run-off. Speed Controllers Available in a wide range of voltages and enclosures. High quality open drip proof motors are standard. Totally enclosed, explosion proof and two speed motors are available. The Lek-TrolTM controller allows adjustment in speed to a maximum of 50% reduction, which results in a very cost effective means for system balancing. The device can be located under the motor cover to prevent unauthorized tampering or on the wall for ease of operation by the building occupants. (Available on direct drive units with ODP motors.) Drives and Belts Firestat Switch Motor Selection Pulleys are pre-set to the specified RPM. Cast iron variable pitch pulleys are adjustable, allowing for field balancing based on actual field conditions. All pulleys are sized for at least 150% of the driven horsepower. Motors can be adjusted to maintain proper belt tension. Firestat switch automatically disconnects the unit when the temperature of the air being supplied exceeds a preset rating. Dampers A large 1” dia. hole in the base provides ample room to easily run electrical power into the housing. Dampers are available for either counter balanced or motorized operation (motor kit optional). Dampers feature square galvanized steel frame, and multi-leaf, roll formed aluminum blades with nylon bearings. Internal Wiring Finishes Conduit Entry All direct and belt drive models with ODP motors feature a polarized disconnect plug which is factory wired from the motor to the junction box. This provides a positive method of electric shutoff as required by most codes without requiring the traditional disconnect switch. (See “Safety Disconnect Switch” for optional disconnect devices.) Coatings such as Polyester Powder Coat, Epoxy Powder Coat, Phenolic Epoxy Powder Coat, and others are available. See the coatings brochure for details. Vibration Isolators The blower housing/motor assembly uses multi-directional, rubber-in-shear isolators to mitigate residual vibrations transmission from the unit to the building. Intake Hood (Model MAS Only) The intake hood is sloped and properly sized for low velocity, preventing water entry. The 1” aluminum filters are washable and secured by easy to use thumb latches. Model MAF, Direct Drive 4 YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES MAF | DIRECT DRIVE LxL1 2 4 5 8 7 9 10 2” C 4. 5. 6. Ro sq. Filter Track Solid End Panels Blower Housings with Support Bar Dimensional Data Model L L 25 21 43 11 DUCT & FLASHING (BY OTHERS) AxA1 ExE Removable Roof Cap Louvered Side Panels Removable 1” Thick Cleanable Filters MAF10 MAF20 MAF30 O sq. 12” MIN H 6 1. 2. 3. T sq. 1 3 1 22 H C A 16 4⅜ 6½ 3 16¼ 30 37 7. Motor and Blower Housing Mounting Plates Resilient Mounted Ball Bearing Motor (Thermally Protected) 8. Self-Flashing Aluminum Curb Filters A 1 4¼ 6 1/16 ExE Qty 25x19 2 43x20 4 Size 16x20 9. Centrifugal Blower Wheels 10. Integral Mounting Base 11. Disconnect Switch RoxRo Unibeam or Field Built Curb (UNI-12) Ship Wt. (lbs) OxO TxT RoxRo OxO TxT 21½ x 15½ 21½ x 15½ 34½ x 18½ 20½ x 14½ 20½ x 14½ 23½ x 17½ 39½ x 16½ 39½ x 16½ 42½ x 19½ 38½ x 15½ 38½ x 15½ 41½ x 8½ 1 1 1 1 1 1 75 230 240 All dimensions in inches. Fan Capacity - CFM Model MAF10V* MAF10R MAF20** (1/2 HP) MAF30*** (1HP) RPM 500 950 1000 1050 1450 1550 500 680 760 790 830 870 910 940 970 1000 1020 1075 500 580 680 780 820 860 900 960 990 1020 1050 1075 0.00” S.P. .100” S.P. .125” S.P. .250” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. .875” S.P. 1.000” S.P. CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP 485 921 970 1020 1485 1590 1165 1585 1775 1845 1935 2030 2125 2195 2265 2335 2380 2395 1775 2060 2410 2765 2910 3050 3195 3405 3510 3620 3725 3730 0.02 0.12 0.12 0.13 0.58 0.66 0.05 0.15 0.20 0.25 0.30 0.35 0.40 0.40 0.45 0.50 0.55 0.55 0.10 0.15 0.25 0.40 0.45 0.55 0.60 0.75 0.80 0.90 1.00 1.00 295 880 935 985 1415 1525 645 1295 1540 1620 1705 1810 1900 1970 2030 2100 2145 2150 1230 1595 1685 2410 2565 2720 2860 3105 3200 3220 3420 3450 0.01 0.12 0.13 0.14 0.55 0.64 0.05 0.15 0.20 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.50 0.50 0.05 0.15 0.20 0.35 0.40 0.50 0.60 0.70 0.75 0.80 0.90 1.00 850 905 960 1400 1510 515 1215 1445 1525 1625 1735 1835 1910 1985 2060 2105 2110 1065 1475 1930 2300 2485 2660 2795 3020 3130 3240 3350 3400 0.12 0.13 0.14 0.54 0.63 0.05 0.15 0.20 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.50 0.50 0.05 0.10 0.20 0.35 0.40 0.50 0.55 0.65 0.75 0.80 0.90 0.90 685 745 810 1315 1430 620 895 1015 1165 1400 1545 1645 1745 1840 1895 1900 480 1335 1895 2085 2265 2440 2725 2855 2980 3100 3180 0.10 0.12 0.13 0.49 0.60 0.10 0.15 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.45 0.45 0.05 0.15 0.25 0.35 0.40 0.45 0.60 0.65 0.75 0.85 0.85 525 630 715 1240 1355 300 490 750 905 1050 1130 1250 1355 1400 1650 375 1090 1510 1810 2030 2340 2485 2620 2760 2950 0.08 0.10 0.13 0.45 0.56 0.10 0.10 0.15 0.20 0.25 0.30 0.30 0.35 0.40 0.45 0.05 0.10 0.20 0.30 0.40 0.50 0.60 0.65 0.70 0.80 575 1160 1280 100 305 545 795 910 1035 1100 1360 385 655 950 1260 1870 2070 2245 2405 2660 0.12 0.41 0.53 0.10 0.15 0.15 0.20 0.25 0.30 0.30 0.45 0.05 0.05 0.10 0.15 0.35 0.45 0.55 0.60 0.70 1065 1200 165 335 490 640 1120 285 615 1050 1280 1525 1870 2300 0.35 0.49 0.15 0.15 0.20 0.25 0.40 0.05 0.10 0.15 0.20 0.30 0.40 0.65 965 1110 140 640 505 705 910 1140 1890 0.30 0.44 0.15 0.30 0.10 0.10 0.15 0.20 0.45 790 1020 370 620 1260 0.20 0.39 0.10 0.10 0.40 350 855 - 0.04 0.29 - Speed (RPM) shown is nominal. Performance is based on actual speed of test. Other speeds listed are obtainable by using matching Lek-Trol™ speed controller. Ratings are based on tests to AMCA Standard 210. Performance shown is for installation type B - free inlet, ducted outlet. All static pressures shown are EXTERNAL. 0” S.P. INCLUDES all fan housing losses including the drop across CLEAN filters. Ratings include the effects of filters in the airstream. * Outlet Velocity = CFM / .75 Tip Speed = 1.9 x RPM. ** Outlet Velocity = CFM / .66 Tip Speed = 2.1 x RPM. *** Outlet Velocity = CFM / .87 Tip Speed = 2.4 x RPM. 5 YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES MAF | BELT DRIVE L sq. 1 5 2 3 10 8 9 6 O sq. 12” MIN H DUCT & FLASHING (BY OTHERS) 4 7 E 1. 2. 3. 11 11 Removable Roof Cap Louvered Side Panels Removable 1” (2” for MAF6020) Thick Cleanable Filters MAF3010 to MAF5018 (left) and MAF6020 (right) 4. 5. 6. 7. Filter Track Angle Reinforcing Supports Blower Housing Blower Housing Mounting Angles Dimensional Data Model MAF3010 MAF4012 MAF4015 MAF5018 MAF6020 H 8 7 12 2” AxA1 2 6 Ro sq. 12 L sq. 1 5 3 4 9 10 T sq. 8. 9. 10. 11. Belt and Pulleys Adjustable Motor Mounting Plate Motor Mounting Base Self-Flashing Aluminum Curb Filters L H A A 28½ 36½ 36½ 45 58½ 24 27 27 27 47 11⅞ 13 7/16 15⅞ 19⅛ 24½ 13⅛ 15⅝ 18⅝ 22⅛ 24½ 1 E Qty Size RoxRo 22½ 27½ 27½ 31 58 4 4 4 8 16 20 x 25 20 x 25 20 x 25 20 x 25 20 x 25 19 24 24 27 ½ 54 ½ 1 AxA1 E 12. Disconnect Switch Unibeam or Field Built Curb (UNI-12) OxO TxT RoxRo 19 24 24 27 ½ 54 ½ 22 27 27 30 ½ 57 ½ 18 23 23 26 ½ 53 ½ 1 1 1 OxO TxT 18 23 23 26 ½ 53 ½ 21 26 26 29 ½ 56 ½ 1 Ship Wt. (lbs) 1 100 160 180 310 770 All dimensions in inches. MAF3010 Fan Capacity - CFM HP 1/4 1/3 1/2 3/4 RPM 400 500 569 590 610 625 650 675 699 720 740 760 780 800 0.00” S.P. .125” S.P. .250” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. .875” S.P. 1.000” S.P. CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP 1346 1683 1915 1986 2053 2104 2188 2272 2353 2424 2491 2558 2626 2693 0.10 0.18 0.27 0.30 0.33 0.35 0.40 0.44 0.49 0.54 0.58 0.63 0.68 0.74 808 1302 1591 1676 1756 1816 1914 2012 2105 2185 2259 2332 2405 2478 0.05 0.12 0.20 0.23 0.26 0.28 0.33 0.37 0.42 0.46 0.51 0.55 0.60 0.65 1162 1285 1399 1476 1589 1701 1806 1897 1982 2066 2148 2230 0.13 0.16 0.19 0.21 0.25 0.29 0.34 0.38 0.42 0.46 0.51 0.56 1104 1279 1436 1559 1674 1783 1874 1964 0.17 0.21 0.25 0.29 0.34 0.38 0.42 0.47 366 1207 1341 1481 1616 0.09 0.23 0.28 0.32 0.37 - - - - - - - - MAF4012 Fan Capacity - CFM HP 1/4 1/3 1/2 3/4 1 1 1/2 RPM 400 440 460 480 500 540 560 600 620 660 680 700 720 740 0.00” S.P. .125” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. .875” S.P. 1.000” S.P. CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP 2355 2590 2710 2825 2945 3180 3300 3535 3650 3885 4005 4120 4240 4360 0.24 0.32 0.36 0.41 0.46 0.58 0.65 0.80 0.88 1.06 1.16 1.27 1.38 1.50 1950 2255 2410 2570 2720 3005 3140 3410 3540 3790 3910 4030 4155 4275 0.20 0.28 0.33 0.39 0.45 0.58 0.64 0.79 0.88 1.06 1.16 1.27 1.38 1.50 1550 1810 2040 2225 2570 2715 3020 3175 3480 3645 3795 3940 4080 0.18 0.24 0.29 0.35 0.48 0.54 0.70 0.79 0.98 1.11 1.23 1.35 1.47 1420 1915 2175 2620 2795 3135 3295 3435 3590 3740 0.19 0.34 0.42 0.59 0.68 0.87 0.98 1.08 1.19 1.32 1800 2155 2675 2895 3080 3260 3435 0.38 0.50 0.72 0.84 0.95 1.07 1.20 1765 2185 2515 2775 3015 0.43 0.60 0.75 0.88 1.02 1870 2305 0.54 0.74 - - - - See performance notes on next page. 6 .250” S.P. YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES MAF | BELT DRIVE MAF4015 Fan Capacity - CFM HP 1/3 1/2 3/4 1 1 1/2 2 3 RPM 340 360 380 400 420 460 480 500 520 560 580 600 620 640 660 0.00” S.P. .125” S.P. .250” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. .875” S.P. 1.000” S.P. CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP 3525 3730 3940 4145 4355 4770 4975 5180 5390 5805 6010 6220 6425 6635 6840 0.40 0.48 0.56 0.66 0.76 1.00 1.13 1.28 1.44 1.80 2.00 2.21 2.44 2.68 2.94 2765 3025 3285 3545 3795 4275 4505 4735 4955 5405 5625 5850 6070 6290 6505 0.28 0.35 0.42 0.51 0.60 0.83 0.96 1.10 1.25 1.59 1.78 1.99 2.21 2.45 2.70 1165 1865 2365 2740 3060 3640 3900 4165 4420 4945 5195 5440 5680 5920 6155 0.10 0.18 0.26 0.35 0.44 0.66 0.78 0.91 1.06 1.39 1.57 1.77 1.98 2.21 2.46 1580 2775 3170 3530 3830 4410 4670 4935 5200 5455 5715 0.21 0.45 0.58 0.71 0.86 1.18 1.36 1.55 1.76 1.98 2.22 1605 2380 2935 3770 4120 4420 4715 5000 5275 0.28 0.44 0.60 0.94 1.13 1.31 1.52 1.74 1.97 2695 3245 3720 4100 4460 4790 0.62 0.82 1.03 1.25 1.47 1.71 1905 2475 3155 3670 4135 0.45 0.66 0.89 1.14 1.39 1465 2345 3105 0.46 0.72 0.99 1255 0.50 MAF5018 Fan Capacity - CFM HP 1/2 3/4 1 1 1/2 2 3 5 RPM 263 302 328 377 400 416 430 450 477 500 520 540 567 0.00” S.P. .125” S.P. .250” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. .875” S.P. 1.000” S.P. CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP 4750 5455 5925 6810 7225 7514 7767 8128 8616 9032 9393 9754 10242 0.51 0.78 1.00 1.51 1.81 2.03 2.24 2.57 3.06 3.53 3.97 4.44 5.14 3771 4766 5375 6332 6775 7081 7348 7728 8239 8671 9047 9421 9924 0.37 0.64 0.86 1.36 1.64 1.86 2.07 2.39 2.87 3.32 3.76 4.22 4.91 2849 3997 5472 6062 6465 6813 7302 7861 8311 8700 9087 9607 0.35 0.57 1.12 1.41 1.64 1.86 2.20 2.68 3.12 3.55 4.01 4.69 3896 4832 5404 5810 6377 7096 7680 8180 8672 9289 0.72 1.03 1.26 1.49 1.84 2.34 2.81 3.26 3.75 4.46 4204 5134 6136 6808 7375 7916 8607 1.03 1.36 1.88 2.37 2.83 3.33 4.04 4465 5622 6372 7063 7839 1.35 1.84 2.29 2.80 3.53 4687 5864 6883 1.68 2.21 2.94 5459 2.34 - - MAF6020 Fan Capacity - CFM HP 1/2 3/4 1 1 1/2 2 3 5 7 1/2 RPM 246 284 308 354 373 390 408 448 467 532 554 585 610 0.00” S.P. .125” S.P. .250” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. .875” S.P. 1.000” S.P. CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP 5817 6716 7284 8371 8821 9223 9648 10594 11044 12581 13101 13834 14426 0.51 0.78 1.00 1.52 1.77 2.03 2.32 3.07 3.48 5.14 5.81 6.84 7.75 4438 5583 6259 7517 8023 8460 8920 9931 10407 12022 12565 13326 13938 0.35 0.60 0.80 1.30 1.56 1.80 2.08 2.81 3.21 4.83 5.49 6.50 7.40 3795 4868 6466 7045 7553 8077 9196 9718 11463 12028 12818 13451 0.35 0.56 1.05 1.29 1.52 1.79 2.51 2.90 4.52 5.16 6.16 7.04 4967 5789 6455 7080 8361 8934 10800 11409 12258 12935 0.71 0.97 1.23 1.51 2.20 2.57 4.13 4.77 5.77 6.66 4757 5696 7371 8033 10098 10755 11649 12351 0.83 1.09 1.85 2.23 3.76 4.37 5.33 6.20 5947 6870 9320 10047 10995 11745 1.37 1.75 3.38 4.01 4.94 5.77 4886 8372 9215 10286 11102 1.21 2.89 3.55 4.52 5.37 7137 8189 9466 10358 2.32 2.94 4.01 4.88 6858 8449 9491 2.43 3.33 4.27 Power Rating (BHP) Includes drive losses. Outlet Velocity = CFM ÷ 1.41. Tip Speed 3.3 x RPM. Performance shown is for installation type B: free inlet, ducted outlet. The AMCA Certified Ratings Seal applies to air performance ratings only. Performance ratings include the effects of filters in the airstream. 7 YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES MAS | BELT DRIVE D K L sq. G* 12 H C F 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. B 1 1 2 8 9 11 12 10 13 4 5 13 14 Y 3 AxA1 E sq. 7 6 X Model E* Sq. Ro Sq. L Sq. H Y MAS10B MAS12B MAS15B MAS18B MAS20B 28 ⅜ 32 ⅜ 32 ⅜ 36 ⅜ 48 ⅜ 20 24 24 28 40 28 ⅞ 32 ⅞ 32 ⅞ 36 ⅞ 48 ⅞ 27 ⅛ 31 ⅜ 31 ⅜ 35 ⅛ 52 ⅝ 8 8⅝ 7½ 6⅞ 11 ⅞ 14 M Outlet A x A1 11 ½ 13 ½ 15 ⅞ 18 ⅞ 24 ⅞ 13 15 ½ 18 ⅝ 21 ¾ 24 ¾ X 8⅞ 10 ¼ 9 10 ⅝ 12 ⅜ E sq. Inlet Duct C B 22 ½ 26 ¾ 26 ¾ 30 ½ 42 22 ⅞ 26 ⅞ 26 ⅞ 30 ⅝ 42 ⅛ Removable Roof Cap with Gasket Galvanized Steel Housing Integral Mounting Base Blower Housing Blower Housing Mounting Plates Steel Angle Cross Braces Anti-vibration Mounts Thermally Protected Motor Safety Disconnect Switch Belt and Pulleys Adjustable Motor Mounting Plate Filter Hood (Optional Extension) Cleanable Filters Hood Support Angles with Feet D F G** K M Qty/Size (WxH) of Filters 23 ⅝ 27 ¾ 27 ¾ 31 ⅝ 43 27 ⅛ 33 ⅛ 33 ⅛ 38 ½ 54 ⅝ 120 120 120 120 120 19 ⅜ 23 ⅜ 23 ⅜ 27 ¼ 38 ¾ 2 2 2 2½ 3½ (1) 21 ½ x 26 ¼ (1) 25 ¾ x 32 ¼ (1) 25 ¾ x 32 ¼ (2) 18 ¾ x 29 ½ (2) 26 ⅞ x 41 All dimensions in inches. *Outside dimension of curb should be 1 ½” less than ‘E’ dimension. ** With optional extension only. Model MAS10B MAS12B MAS15B MAS18B MAS20B HP 1/4 1/3 1/2 3/4 1 1 1/2 1/4 1/3 1/2 3/4 1 1 1/2 2 3 1/4 1/3 1/2 3/4 1 1 1/2 2 3 5 1/2 3/4 1 1 1/2 2 3 5 3/4 1 1 1/2 2 3 5 7 1/2 RPM 739 795 915 1052 1127 1295 527 567 653 750 804 924 1019 1169 338 364 418 481 516 593 654 750 891 426 489 525 603 665 762 906 386 414 476 524 602 715 819 Fan Capacity - CFM Peak BHP .000”S.P .125” S.P. .250” S.P. .375” S.P. .500” S.P. .625” S.P. .750” S.P. 1.000” S.P. 1.250” S.P. 1.500” S.P. CFM CFM CFM CFM CFM CFM CFM CFM CFM CFM 0.30 0.38 0.57 0.87 1.07 1.63 0.30 0.38 0.57 0.87 1.07 1.62 2.18 3.29 0.30 0.37 0.57 0.87 1.07 1.62 2.17 3.28 5.50 0.57 0.86 1.07 1.62 2.17 3.27 5.50 0.86 1.07 1.62 2.16 3.28 5.49 8.26 1837 1977 2275 2616 2802 3220 2300 2475 2851 3274 3510 4034 4449 5103 2883 3105 3565 4103 4401 5058 5578 6397 7600 4068 4669 5013 5758 6350 7276 8651 5995 6430 7393 8139 9350 11106 12721 1653 1806 2129 2489 2684 3117 2021 2225 2640 3093 3341 3886 4314 4986 2349 2625 3160 3754 4078 4779 5324 6174 7411 3607 4280 4650 5440 6059 7021 8434 5426 5933 6963 7746 9006 10811 12461 1415 1593 1960 2357 2562 3013 1522 1804 2354 2883 3158 3736 4181 4871 2567 3355 3725 4487 5065 5953 7228 2999 3823 4237 5107 5779 6776 8226 4492 5115 6376 7272 8672 10531 12215 1332 1765 2195 2420 2905 1918 2583 2908 3559 4038 4752 2668 3198 4151 4791 5723 7038 3208 3717 4730 5439 6512 8021 3306 4077 5575 6634 8167 10239 11971 1526 2024 2262 2776 2186 2567 3333 3863 4626 3655 4451 5479 6845 3074 4248 5066 6215 7802 4653 5849 7594 9802 11704 1819 2094 2639 1631 2193 3041 3645 4472 2955 3966 5192 6644 3695 4626 5902 7553 3441 4980 6914 9364 11322 1895 2500 2717 3377 4296 3324 4791 6423 4119 5518 7302 3871 6185 8814 10940 2163 2789 3848 3735 5859 4662 6716 4349 7636 10033 3336 5078 6063 6325 9017 - 2607 5270 7911 Power Rating (BHP) Includes drive losses. Outlet Velocity = CFM ÷ 1.41. Tip Speed 3.3 x RPM. Performance shown is for installation type B: free inlet, ducted outlet. The AMCA Certified Ratings Seal applies to air performance ratings only. Performance ratings include the effects of filters in the airstream. 8 YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES ENGINEERING SPECIFICATIONS Model MAF = Make-up Air MAS = Side Intake Unit Size 10, 20, 30, 3010, 4012, 4015, 5018, 6020 Drive Type D = Direct Drive B = Belt Drive Motor Tap C = RC = SC = VC = 690 RPM 1750 RPM 1750 RPM 1750 RPM Motor Speed 1 2 3 4 = Single Speed = 2S2W 1800/1200 = 2S1W 1800/900 = 2S1W 1800/1200 Color 0 = None 00 = Standard Gray 50 = Chrome Green 55 = Pale Green 56 = Dove Gray 61 = White 63 = Oxford Beige 65 = Dover White 66 = Desert Tan 70 = Black 73 = Smoke Gray 77 = Brick Red 79 = Peppercorn 81 = Pale Brown 83 = Chocolate Brown 85 = Timeless Bronze 94 = Charcoal X = Special See selection software. Enclosure Roof Curb O = Open Drip Proof X = Special Voltage See selection software. Phase 1 = Single 3 = Three Cycle 5 = 50 Hz 6 = 60 Hz Efficiency S = Standard P = Premium AMCA Classification 0 = None C = AL IN/PL B = ALWL/PLT Paint / Coating 0 = None F = Epoxy Powder Coat* G = Epoxy Powder Coat with UV* H = Hi-Temp Powder Coat* J = Non-Stick Powder Coat* K = Phenolic Powder Coat* L = Phenolic Powder Coat with UV* N = Polyester Powder Coat X = Special Disconnect Switch 0 = 1 = 3R = 4 = X = None NEMA 1 NEMA 3R Disconnect Switch NEMA 4 Disconnect Switch Special Internal Wiring 0 = None 3R = NEMA 3R Internal Wiring 4 = NEMA 4 Internal Wiring X = Special Damper 0 CBD MD1 MD2 MD4 Horse Power Side Discharge Pedestal 0 = None A = Aluminum G = Galvanized = = = = = None Counter Balanced Supply Damper Motor Operated Damper 115V Motor Operated Damper 230V Motor Operated Damper 460V See selection software. Slope 0 = None S = Single D = Double Metal Liner 0 = None L = Metal Liner Damper Holding Plate 0 = None P = Damper Holding Plate Neoprene Gasket 0 = None G = Gasket Wooden Nailer 0 = None W = Wooden Nailer Curb Paint/Coating 0 = None B = Air Dried Epoxy Q = Air Dried Enamel Thermal Overload Protection 0 = None P = Thermal Protection * Not available with choice of color. 9 YORK® MAKE-UP AIR & SIDE INTAKE FILTERED SUPPLY CENTRIFUGAL FANS, MA-SERIES ENGINEERING SPECIFICATIONS MAF - Direct Drive Units Direct Drive Roof Supply (Intake) fan shall be model MAF, manufactured by YORK® by Johnson Controls. Fan housing shall be low profile, galvanized steel, incorporate die formed louvered side panels and a removable roof cap for access to filters and motor/ fan assembly. Removable, permanent, washable filters shall be mounted behind all louvered openings. Fans shall have two forward curved centrifugal wheel assemblies sharing a center mounted motor. Fan motor shall be continuous duty, ball bearing design, permanently lubricated, positively cooled and double shafted. Each fan shall be CULUS listed. MAF - Belt Drive Units Belt Driven Roof Supply (Intake) fan shall be model MAF, manufactured by YORK® by Johnson Controls. Fan housing shall be low profile, galvanized steel, incorporate die formed louvered side panels and a removable roof cap for access to filters and motor/fan assembly. Removable, permanent, washable filters shall be mounted behind all louvered openings. Fans shall have a forward curved centrifugal wheel. Fan motor shall be continuous duty, ball bearing design, permanently lubricated, positively cooled and furnished at the specified voltage, phase and enclosure. Pulleys shall be adjustable, cast iron, machined, keyed, securely attached and sized for 150% of the horsepower at its rated maximum speed. Each fan shall bear the AMCA Licensed Ratings Seal for Air Performance and shall be CULUS listed. MAS - Belt Drive Units Belt driven Roof Filtered Supply (intake) fan shall be model MAS, manufactured by YORK® by Johnson Controls. Fan housing shall be galvanized steel, incorporate an intake hood (extended version optionally available for NFPA96), and a pitched removable housing cover, gasketed and insulated, including quick release latches. Removable, permanent, washable filter(s) shall be mounted on the intake hood opening. Fan shall have a forward curved centrifugal wheel. Fan motor shall be continuous duty, ball bearing design, permanently lubricated, positively cooled and furnished at the specified voltage, phase and enclosure. Pulleys shall be adjustable, cast iron, machined, keyed, securely attached and sized for 150% of the horsepower at its rated maximum speed. Each fan shall be CULUS listed. 10 At Johnson Controls, we truly understand HVAC systems. In fact, we produce some of the most robust HVAC equipment, parts and controls on the market today. But we don’t just sell products. We also offer the expertise, services and strategic insight to make them work within your current system, optimizing your building’s performance and lowering your overall costs. If you’re interested in revolutionizing your HVAC system, contact and expert today. Otherwise, browse our full-suite of HVAC products. Please visit us at johnsoncontrols.com/hvac for more information. Printed on recycled paper. Johnson Controls, the Johnson Controls logo, YORK® and Heresite® are trademarks of Johnson Controls, Inc., or its affiliates, in the United States of American and/or other countries. ©2015 Johnson Controls, Inc., P.O. Box 423, Milwaukee, WI 53201 www.johnsoncontrols.com Printed in USA PUBL-7613 MA-SERIES July 2015 ">
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