Glass-covered, all-wood frame greenhouse, fairly tight, 40 feet wide and 80 feet long. No curtain wall. Glass walls are 8 feet tall. The average wind velocity expected is 25 mph. The greenhouse location's climate is expected to have a low temperature outside of 20F and the desired inside temperature of 75F

TABLE I. STANDARD HEAT-LOSS VALUES FOR GABLES & ROOFS OF GABLE-ROOF GREENHOUSES Greenhouse width in feet 16 18 20 22 24 26 28 30 32 34 36 38 40 50 60 Gable loss (both) in mBTU/hr Greenhouse 5 Length 6 8 10 11 13 15 18 20 23 26 29 32 50 72 in feet Roof loss (both) in mBTU/hr 7 8 9 10 11 12 12 13 14 15 16 17 18 22 26 10 14 16 18 19 21 23 25 27 28 30 32 34 35 45 54 20 28 32 35 39 42 46 50 53 57 60 64 67 71 88 106 30 42 48 53 58 64 69 74 80 85 90 96 101 106 133 160 40 57 64 71 78 85 92 99 106 113 120 127 135 142 177 212 50 71 80 89 97 106 115 124 133 142 151 159 168 177 222 266 60 85 96 106 117 127 138 149 159 170 181 191 202 212 265 318 70 99 112 124 136 149 161 173 186 198 211 223 235 248 310 372 80 113 127 142 156 170 184 198 212 227 241 255 269 283 354 424 90 127 143 159 175 191 207 223 239 255 271 287 303 319 398 478 100 142 159 177 195 212 230 248 266 283 301 319 336 354 443 532 200 283 319 354 390 425 460 496 531 567 602 637 673 708 885 1, 062 300 425 478 531 584 637 690 743 797 850 903 956 1, 009 1, 062 1, 328 1, 59. 400 566 637 708 779 850 920 991 1, 062 1, 133 1, 204 1, 274 1, 345 1, 416 1, 770 2, 124 500 708 797 885 974 1, 062 1, 150 1, 239 TM 1, 328 1, 417 1, 505 1, 593 1, 682 1, 770 2, 213 2, 666 ATU ARKANSAS TECH UNIVERSITYTABLE II. STANDARD HEAT-LOSS VALUES GREENHOUSE WALLS Wall height in feet Wall length 2 6 10o 10 12 14 Wall loss in mBT Uhr 3 4 5 6 10 6 8 6 u N 10 11 20 13 16 19 22 30 14 19 24 29 34 40 19 26 32 38 45 50 8 16 24 32 40 48 56 60 9 19 28 38 47 58 67 70 11 22 33 44 55 67 78 80 13 25 38 51 63 77 90 90 14 28 43 58 71 86 101 100 16 32 47 64 79 96 112 200 32 63 95 128 158 192 224 300 47 95 142 192 237 288 336 400 63 127 190 256 316 384 448 500 79 158 237 320 395 480 560 ATU TM ARKANSAS TECH UNIVERSITY 9TABLE III. CLIMATE FACTORS (K) FOR VARIOUS AVERAGE WIND VELOCITY AND TEMPERATURE CONDITIONS Inside to outside temperature difference (F) Wind velocity in mph 15 20 25 30 30 . 41 35 . 43 . 46 . 48 35 50 . 48 50 53 55 40 55 57 . 57 . 60 45 62 . 62 64 65 . 67 50 . 70 72 . 69 .72 . 74 5 5 77 . 77 80 . 80 . 83 60 86 . 89 .84 . 88 91 65 . 94 . 92 . 98 . 96 . 99 70 1. 03 1.00 1.07 1.04 1.08 75 1. 12 1.08 1. 16 1.12 1.17 80 1. 21 1.16 1. 25 1.21 1.26 1.30 85 1. 25 1.35 1.30 1. 35 90 1. 40 1.33 1.45 1.38 1. 44 1. 49 1.54 ATU TM ARKANSAS TECH UNIVERSITY 9TABLE IV. GREENHOUSE CONSTRUCTION FACTORS (C) FOR COMMON TYPES OF GREENHOUSES Type of greenhouse C All metal frame (tight glass houseZO or 24 inch glass width) L08 Wood and steal (tight glass houseIf or 20 inch glass widthmetal gutters, vents, headers, etc.) 1.05 Wood house (glass with wood bars, gutters, venls, etaup m and including 20-inch glass width Good tight house 1.00 Fairly light house 113 Loose house 1.25 FRP-covered wood housc '95 FILE-covered metal house 1.00 Double glass house with 1-inch air space '70 Plastic covered metal house (single layer) 1.00 Plastic covered metal house double Ia er) .70 A ARKANSAS TECH U N IVER SIT Y TABLE V. CURTAIN-WALL CONSTRUCTION FACTOR (CW) FOR VARIOUS TYPES OF NON-TRANSPARENT MATERIALS Type of material CW Glass 1.13 Asbestos-cement 1.15 Concrete, 4-inch .78 Concrete, 8-inch 48 Concrete block, 4-inch 64 Concrete block, 6-inch 51 ATU TM ARKANSAS TECH UNIVERSITY 9TABLE VI. STANDARD HEAT-LOSS VALUES FOR QUONSET- STYLE GREENHOUSES (COMBINED ENDS & ENTIRE COVERING ALONG LENGTH) Covering width in feet 18 20 22 24 26 28 30 32 34 36 38 40 End loss (both) in mBTU/hr Greenhouse 8 12 17 20 23 26 29 33 36 40 Length 15 in feet Roof covering loss in mBTU/hr 5 7 8 9 9 10 11 12 13 13 14 15 16 10 14 16 17 19 21 22 24 25 27 28 30 32 20 28 32 35 39 41 4 4 47 51 54 57 60 63 30 43 47 52 57 62 66 71 76 81 85 90 95 10 57 63 70 76 82 89 95 101 103 114 120 127 50 71 79 87 95 103 111 19 127 134 142 150 158 60 85 95 104 114 123 133 142 152 161 171 180 190 70 100 111 122 133 144 155 166 177 188 199 211 222 80 114 127 139 152 164 177 190 202 215 228 240 253 90 128 142 157 171 185 199 214 228 242 256 271 285 100 142 158 174 190 206 221 237 253 269 285 301 316 200 285 316 348 380 411 443 475 506 638 570 601 633 300 427 475 522 569 617 664 712 759 807 854 902 949 400 570 633 696 759 822 886 949 1, 012 1, 075 1, 139 1, 202 1, 265 500 712 791 870 949 1, 028 1, 107 1, 187 1, 265 1, 345 1, 424 1 , 503 1, 582 ATU TM ARKANSAS TECH UNIVERSITY 9PROPELLER UNIT MODEL PDP PERFORMANCE DATA ( 2 PROPELLER UNIT MODEL PTP PERFORMANCE DATA ( 2 Model Maximum Btu/hr Maximum Model Btu/hr Btu/hr Heat Throw Model Btu/hr leat Throw Size Input @ Output @ Mounting (ft.) 2 Model Size Input (@ Output @ Mounting Height (ft.) 2 Height (ft.) 2 (ft.) 2 150 150,000 124,500 16 55 150 150,000 123,000 15 51 175 175,000 145,250 17 59 175 175,000 143,500 14 50 200 200,000 166,000 15 51 200 200,000 164,000 15 53 PDP 250 250,000 207,500 19 67 PTP 250 250,000 205,000 18 62 300 300,000 249,000 21 74 300 300,000 246,000 19 69 350 350,000 290,500 20 70 350 350,000 287,000 18 65 400 400,000 332,000 19 69 400 400,000 328,000 21 74 HIGH-EFFICIENCY MODEL PTC (EFFINITY) PERFORMANCE DATA ( 2 3 Model Model Size Btu/hr Input @ Btu/hr Output @ Condensate CFM Range @ Temperature Maximum Mounting Heat Throw Production (Gal/hr) Rise (OF) Height (ft.) 2 (ft.) 2 55 65,000 1,150 0.3 1,097 13 12 13 65 65,00 60,450 0.4 1,141 49 12 43 85 80,000 79,050 0.5 1,650 44 13 48 110 110,000 102,300 0 .7 1, 750 54 13 46 135 PTC 135,000 .25,550 1.0 2,160 54 14 51 155 55,000 144,150 1.1 2,600 51 18 62 180 180,000 167,400 1.3 3,020 51 15 53 215 3 215,000 199,950 1.6 3.865 48 17 60 260 3 260,000 241,800 1.9 4.585 49 20 70 310 3 310,000 288,300 2.3 5 400 49 19 67 @Ratings are shown for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level (In Canada, see rating plate). Reduction of ratings requires use of a high-altitude kit. 2 Data taken at 65OF ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods. Corresponding blower models available. Do Not Locate ANY Gas-Fired Unit in Areas with Chlorinated, Halogenated or Acidic Vapors in Atmosphere. MODINE Always innovating. Always Improving. Modine Manufacturing Company 1500 Dekoven Avenue Racine, Wisconsin 53403-2552 Phone: 1.800.828.4328 (HEAT) www.modinehvac.com Allow us @ModineHVAC @2020 Modine Manufacturing Co. dis ee us at You Tube. com/ModineHVAC fww.facebook.com/ModineHVAC/ 80-168.3 in ww.linkedin.com/company/modinehvac/COMMERCIAL SOLUTIONS O GAS-FIRED UNIT HEATERS FOR YOUR SPACE AND YOUR BOTTOM LINE PDP | PTP | PTC Effinity MODINE MODINE High Efficiency in MODINE Always Innovating. Always Improving.\" PT P PTC UNIT OPTIONS COMPARISON 7 sizes from 7 sizes from 10 separated Available Model Sizes (Btu/hr) combustion sizes from 150,000 to 400,000 150,000 to 400,000 55,000 to 310,000 Thermal Efficiency 83% 82% 93%797% 100% Shut-Off intermittent Pilotignition System With Continuous Retry \\/ '/ \\/ . \\/ Uses Natural Gas or Propane (Field '/ '/ PI t ' Convertible From Natural Gas to Propane) US ex erna gas connections Tubular Heat Exchangerwith lnShot Burner on Each Exchanger Tube for \\/ \\/ Reliable Performance & Ease of Service Stainless Steel Heat Exchanger '/ \\/ Extends the Life ofthe Product _ Designed to Utilize the Smallest \\/ '/ Diameter Vent Pipe Possible _ PermanentlyLubricated Motor \\/ \\/ \\/ lO-Year Heat Exchanger Warranty \\/ \\/ Full 107yearwarranty on both heat exchangers inPCabinet Controls Protection Power exhauster and controls mounted inside the cabinet for protection from moisture and dust Sealed compartment protects the combination gas valve, ignition control, manifold and burner from environment Contractor Convenience Package Includes diagnostic LEDs, disconnect switch and condensate pump outlet EnergySaver Controls Controls automatically engage and disengage gas controls as temperature increase and decreases VERTICAL POWER VENTED Modine's PDP power vented unit heaters are inexpensive to install, easy to use, and offer excellent inservice economy. PDP HORIZONTAL POWER VENTED The PTP was specifically designed with the customer in mind to provide high value at a reasonable cost. The PTP delivers 82% thermal efficiency in a robust package of design features. PTP HIGH-EFFICIENCY The Effinity unit heater (PTC) line is the most efficient gas fired commercial unit heater in North America. Offering up to 97% efficiency is a result of the coupling of our exclusive Conservicore secondary heat exchanger technology with our robust tubular primary heat exchanger design. PTC FAN GUARDS AND BLUWERS All Modine gasfired unit heaters can be equipped with an optional fingerproof fan guard for operation at low mounting heights. Blowers are also available. Blower units are designed for both heating and ventilating and can be used in a variety of ways for both commercial and greenhouse markets. PROPELLER UNIT MODEL PDP PERFORMANCE DATA ( 2 PROPELLER UNIT MODEL PTP PERFORMANCE DATA ( 2 Model Maximum Btu/hr Maximum Model Btu/hr Btu/hr Heat Throw Model Btu/hr leat Throw Size Input @ Output @ Mounting (ft.) 2 Model Size Input (@ Output @ Mounting Height (ft.) 2 Height (ft.) 2 (ft.) 2 150 150,000 124,500 16 55 150 150,000 123,000 15 51 175 175,000 145,250 17 59 175 175,000 143,500 14 50 200 200,000 166,000 15 51 200 200,000 164,000 15 53 PDP 250 250,000 207,500 19 67 PTP 250 250,000 205,000 18 62 300 300,000 249,000 21 74 300 300,000 246,000 19 69 350 350,000 290,500 20 70 350 350,000 287,000 18 65 400 400,000 332,000 19 69 400 400,000 328,000 21 74 HIGH-EFFICIENCY MODEL PTC (EFFINITY) PERFORMANCE DATA ( 2 3 Model Model Size Btu/hr Input @ Btu/hr Output @ Condensate CFM Range @ Temperature Maximum Mounting Heat Throw Production (Gal/hr) Rise (OF) Height (ft.) 2 (ft.) 2 55 65,000 1,150 0.3 1,097 13 12 13 65 65,00 60,450 0.4 1,141 49 12 43 85 80,000 79,050 0.5 1,650 44 13 48 110 110,000 102,300 0 .7 1, 750 54 13 46 135 PTC 135,000 .25,550 1.0 2,160 54 14 51 155 55,000 144,150 1.1 2,600 51 18 62 180 180,000 167,400 1.3 3,020 51 15 53 215 3 215,000 199,950 1.6 3.865 48 17 60 260 3 260,000 241,800 1.9 4.585 49 20 70 310 3 310,000 288,300 2.3 5 400 49 19 67 @Ratings are shown for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level (In Canada, see rating plate). Reduction of ratings requires use of a high-altitude kit. 2 Data taken at 65OF ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods. Corresponding blower models available. Do Not Locate ANY Gas-Fired Unit in Areas with Chlorinated, Halogenated or Acidic Vapors in Atmosphere. MODINE Always innovating. Always Improving. Modine Manufacturing Company 1500 Dekoven Avenue Racine, Wisconsin 53403-2552 Phone: 1.800.828.4328 (HEAT) www.modinehvac.com Allow us @ModineHVAC @2020 Modine Manufacturing Co. dis ee us at You Tube. com/ModineHVAC fww.facebook.com/ModineHVAC/ 80-168.3 in ww.linkedin.com/company/modinehvac/