BN-HGDTB June Replaces BN-HGDTB, March Mohave. Technical Guide

BN-HGDTB June 2017 Replaces BN-HGDTB, March 2011 Mohave Technical Guide

Table of Contents Overview... 2 System Features... 3 Condensing Unit... 4-18 Mohave Hot Gas Defrost Quick Reference... 5 AWEF Ratings...11 Mohave Hot Gas Unit Cooler Typical Factory Piping. 19 Medium Profile Evaporator...20-22 Large Unit Cooler...23-28 Refrigeration and Defrost Operation...29-31 Mohave Hot Gas Defrost Cycle Diagrams...32-33 Overview The Mohave advanced hot gas defrost refrigeration system with controller utilizes hot gas to greatly reduce defrost times and operates in all outdoor ambient temperatures.* This leads to increased energy efficiency and product integrity in a refrigeration system that can be used in a greater variety of environmental conditions. This system utilizes a state-of-the-art electronic defrost controller with a proprietary control scheme that allows the system to continually operate at its most optimal level. This system can be applied for a minimum room temperature of -25F and with one or two evaporators. *Tested to -20 F ambient. Hot Gas Control Board Features & Benefits The Mohave controller completely manages timing and sequence of defrost Point to point wiring to all control components Automatically compensates for changes in outdoor temperatures Quick and easy troubleshooting Monitors all pressures, temperatures, and setpoints in real time. Easily programmable through a menu driven interface The control board with conformal coating will handle the toughest conditions LED indicators on the board clearly show system status Remote alarm notification Significant energy savings over electric defrost systems 2

Main System Features Condensing Unit Integral condenser sub-cooling circuit in condenser for added capacity and vapor free liquid Floating Tube condenser coil design Electronic defrost controller Pressure or ambient fan cycling for head pressure control Electronic pressure regulator for defrost control Anti-short cycling protection High pressure and low pressure controls Oil pressure safety control Easily accessible control box High efficiency Copeland Discus compressors with poe oil Thermally protected permanently lubricated ball bearing condenser fan motor(s) Receivers are sized for sufficient pumpdown capacity with inlet and outlet service valves Cabinet is constructed from painted galvanized steel Replaceable core liquid line filter drier Replaceable core suction filter Evaporators All components are factory installed and wired Independent or single point power supply from condensing unit 4 and 6 FPI medium and large unit coolers Features:. Mounted TXV and distributor nozzle. Mounted check valves. Mounted liquid line solenoid. Mounted suction P trap. Electric drain pan heater standard (mounted hot gas drain loop optional). Mounted and wired control contactors. System Match-ups available using ProSelect Electric Vs. Hot Gas Drain Pan Electric Drain Pan Heater (Std) In this option, the drain pan surface is heated with low wattage electric heater(s) The electrical power requirements to the evaporator are unchanged Hot Gas Drain Pan Loop In this option, hot refrigerant gas passes through a loop of copper tubing that heats the drain pan surface before it defrosts the evaporator coil Advantages Lower cost solution Defrost is even quicker because more hot gas is available to defrost the evaporator coil Advantages In applications where there is limited evaporator accessibility (ex: controlled atmosphere rooms) 3

Vertical Air Discharge Condensing Unit The BDV Outdoor Discus Condensing Unit features a leak resistant design which includes: The Floating Tube condenser coil design. Refrigerant carrying copper tubes do not contact any metal support sheets; instead, the coil is constructed with expanded anchor tubes which support the coil construction and do not carry refrigerant. The coil design eliminates one of the major causes of leaks in refrigeration systems Limited five year warranty against condenser tube sheet and center support leaks Designed for use with R-404A, R-507, R-407A, R-407F, R-407C, and R-448A/R-449A Polyol Ester Oil charge on all units Pre-bent copper tubes minimize braze joints on internal piping Encapsulated high pressure switch eliminates capillary tubes Sentronic oil safety control ServiceMate diagnostic module Electronic defrost controller Other Standard Features High efficiency Copeland Discus compressors Thermally protected, permanently lubricated ball bearing condenser fan motors Electrical controls including compressor contactor, relays, and electronic controls are located in easily accessible control box with a hinged cover Receivers sized for sufficient pump down capacity with inlet and outlet service valves Cabinet constructed from pre-painted steel Convenient access panels for easy servicing to internal components Suction and discharge vibration eliminators Separate subcooling circuit in condenser for added capacity and vapor free liquid Replaceable core liquid line filter drier and sight glass Replaceable core suction filter Anti-short cycle timer Suction accumulator Condenser fan cycling (pressure or temperature) Pressure relief valve on receiver Crankcase heater Optional Features Oil separator Fused disconnect switch Non-fused disconnect switch Coated condenser coils for protection against metal erosion in harsh environments Manual reset high pressure switch Low ambient kit with insulated, heated receiver Phase loss protection Adjustable head pressure control valves Demand Cooling Evaporator control contactors mounted in condensing unit Auxiliary temperature sensor for room temperature control Nomenclature BDV 150 2 L 6 C BDV Vertical Air Discharge Nominal Horsepower 060 6 HP 120 12 HP 075 7.5 HP 150 15 HP 076 7.5 HP 200 20 HP 080 8 HP 250 25 HP 090 9 HP 300 30 HP 100 10 HP 350 35 HP 400 40 HP Hot Gas Defrost 2 Refrigerant 6 R-404A, R-507, R-407A, R-407C, R-407F, R-448A/R-449A Application (SST) L Low (0 F to -40 F) M Medium (30 F to -10 F) Electrical Characteristics C 208-230/3/60 D 460/3/60 K 230/3/60 E 575/3/60 4

The Mohave Controller Fast, dependable, and efficient positive defrost of evaporators Five to ten minute defrost times in most applications Program Review Enter Monitor Reset Time Will operate efficiently in all outdoor ambient conditions* Significant energy savings over electric defrost systems Highest levels of product integrity through more stable box temperatures *Tested to -20 F ambient. Mohave Hot Gas Defrost Controller Quick Reference Guide Control Buttons Program Review: Review or Change the Program Settings Enter: Accepts changes into memory Clear/ Test Selection Knob Force Service Force Defrost Monitor: View Current Operating Conditions of the System Reset Time: Resets the time clocks of the microprocessor to 0 Clear/Test: Clear ignores program selections prior to pressing Enter and terminates Service Mode. Test causes the system to cycle through all of the outputs for troubleshooting Select Knob: Used for Cycling through Monitoring and Programming Parameters Force Service: Press this button twice to cause the system to pump down and remain off until the Clear button is pressed Force Defrost: System will pump down and begin a defrost cycle. This will not affect the normally scheduled defrosts Service Switch This toggle switch may be placed in the on position to force the system into Service Mode. The compressor will pump down and shut off. The evaporator fans will de-energize. The system can be left in service mode for seasonal OFF situations. Operating Modes Mode OFF COOL PMPD SERV DELY Description Compressor Off Compressor On in Cooling Normal Cooling Operation System in Pump Down Mode Service Mode, System is Off Timed Delay DEF1 Defrost Stage 1 Pre-Defrost or Bypass Mode DEF2 Defrost Stage 2 Defrost Mode DEF3 Defrost Stage 3 Post Defrost Equalization or Drain Down Mode FREZ TEST SERV EVAC Refreeze Mode Test Mode Service Mode Evacuation Mode 5

Electrical Box Features Condenser Fan Contactors Compressor Contactor Control Circuit Transformers Control Circuit Fuses & Service Switch All Service Controls are located in a separate electrical panel allowing field adjustments without disconnecting power to the unit Oil Pressure Switch ServiceMate Diagnostic Module Mohave Hot Gas System Controller Electrical Service Knockouts Main Power Block Typical Internal Piping Replaceable Core Liquid Filter Drier Pre-bent Internal Piping Prevents Braze Joints Defrost Solenoid Replaceable Core Suction Filter Bypass Solenoid Suction Stop Solenoid Easily Accessible Discus Compressor Electronic Pressure Regulator Galvanized Steel Base with Rigging Points 3-Way Valve Liquid Receiver with Service Valves Allow Charge Isolation Suction Accumulator 6

Performance Data Model BDV Medium Temperature R-404A or R-507 Model BDV 0752M6 0762M6 0802M6 1002M6 1202M6 1502M6 2002M6 2502M6 3002M6 3502M6 4002M6 Ambient Temp. F 25 F Saturated Suction Temperature F 20 F 15 F 10 F 5 F 90 70,900 64,300 57,900 51,700 45,900 95 67,600 61,300 55,300 49,400 43,800 100 64,500 58,500 52,800 47,100 41,600 110 58,300 53,000 47,700 42,400 37,400 90 80,300 73,400 66,600 60,000 53,600 95 76,800 70,100 63,500 57,300 51,000 100 73,100 66,800 60,700 54,600 48,700 110 66,200 60,600 54,900 49,200 43,700 90 94,300 86,000 77,900 70,200 62,700 95 90,500 82,600 74,900 67,500 60,000 100 86,800 79,200 71,800 64,400 57,500 110 79,000 72,400 65,700 59,000 52,500 90 114,800 104,900 95,100 85,800 76,800 95 110,100 100,600 91,300 82,200 73,400 100 105,300 96,200 87,400 78,600 70,000 110 95,700 87,500 79,300 71,200 63,200 90 138,300 126,500 115,100 103,800 92,800 95 132,500 121,200 110,300 99,400 88,800 100 126,600 116,100 105,400 95,000 84,800 110 115,100 105,400 95,700 86,200 76,600 90 153,300 140,300 127,600 115,000 102,900 95 146,800 134,300 122,200 110,200 98,500 100 140,300 128,700 116,900 105,300 94,000 110 127,500 116,800 106,100 95,600 85,100 90 190,600 173,700 157,000 141,300 126,800 95 181,800 165,800 149,800 134,600 120,700 100 173,200 157,300 142,300 128,100 114,800 110 155,600 141,500 128,100 115,200 103,200 90 212,900 193,000 174,000 156,200 139,400 95 203,800 184,600 166,500 149,000 132,800 100 194,700 176,100 158,600 141,800 126,200 110 176,800 159,600 143,100 127,400 112,600 90 249,200 227,500 206,500 185,600 165,500 95 238,100 217,300 197,200 177,100 157,800 100 226,900 207,400 187,900 168,600 150,000 110 205,000 186,900 169,100 151,500 134,500 90 312,300 285,400 259,300 234,400 209,600 95 297,800 272,700 248,300 223,600 200,000 100 284,000 260,400 236,600 212,900 189,800 110 256,900 235,000 213,200 191,400 169,900 90 359,700 329,700 300,600 272,000 244,200 95 345,100 315,900 287,400 259,800 232,900 100 329,600 301,500 274,300 247,500 221,600 110 298,200 272,700 247,400 222,600 198,600 7

Performance Data Model BDV Medium Temperature 8 R-407A/R-407F Model BDV 0752M6 0762M6 0802M6 1002M6 1202M6 1502M6 2002M6 2502M6 3002M6 3502M6 4002M6 Ambient Temp. F 25 F Saturated Suction Temperature F 20 F 15 F 10 F 5 F 90 69,400 62,400 56,100 50,200 44,700 95 66,700 60,000 53,900 48,200 43,000 100 63,900 57,500 51,700 46,200 41,200 110 58,400 52,500 47,200 42,200 37,600 90 77,300 69,400 62,000 55,100 48,900 95 74,200 66,600 59,500 52,900 46,900 100 71,000 63,700 56,900 50,600 44,800 110 64,800 58,100 51,800 46,100 40,700 90 93,500 83,500 74,200 65,500 57,600 95 89,600 80,000 71,100 62,700 55,100 100 85,600 76,500 67,900 59,900 52,600 110 77,800 69,500 61,600 54,200 47,500 90 115,200 102,900 91,400 80,900 71,300 95 110,700 98,900 87,800 77,600 68,400 100 106,100 94,700 84,100 74,300 65,400 110 96,800 86,400 76,600 67,500 59,200 90 132,700 118,400 105,200 92,900 81,700 95 127,200 113,500 100,900 89,000 78,400 100 121,600 108,700 96,500 85,100 74,900 110 110,400 98,700 87,500 77,100 67,700 90 153,900 137,700 122,900 108,900 96,100 95 147,900 132,500 118,200 104,700 92,300 100 142,000 127,200 113,500 100,500 88,400 110 130,300 116,900 104,200 92,100 80,800 90 188,700 169,700 152,300 136,100 121,300 95 181,200 163,000 146,300 130,600 116,400 100 173,700 156,200 140,100 125,100 111,400 110 158,600 142,500 127,700 114,100 101,300 90 215,700 193,400 173,000 154,200 136,900 95 207,500 186,100 166,300 148,200 131,500 100 199,100 178,500 159,600 142,100 126,000 110 182,400 163,400 146,000 129,800 115,000 90 252,600 227,400 203,500 181,200 160,100 95 242,500 218,300 195,400 174,000 153,800 100 232,100 209,000 187,100 166,700 147,400 110 211,200 190,100 170,500 151,900 134,600 90 310,300 279,500 250,300 222,900 197,500 95 299,700 270,000 241,900 215,400 190,700 100 289,200 260,700 233,500 207,800 183,900 110 267,700 241,700 216,400 192,400 169,900 90 370,100 333,000 298,000 265,000 234,500 95 357,700 321,900 288,000 256,200 226,600 100 345,200 310,800 278,200 247,300 218,600 110 319,900 288,100 258,000 229,200 202,300

Performance Data Model BDV Medium Temperature R-407C Model BDV 0752M6 0762M6 0802M6 1002M6 1202M6 1502M6 2002M6 2502M6 3002M6 3502M6 4002M6 Ambient Temp. F 25 F Saturated Suction Temperature F 20 F 15 F 90 61,900 54,800 48,500 95 59,700 52,900 46,800 100 57,600 51,000 45,100 110 53,500 47,400 41,900 90 69,600 61,700 54,600 95 67,100 59,500 52,600 100 64,800 57,300 50,600 110 60,100 53,100 46,800 90 84,200 75,400 67,200 95 81,400 72,800 64,800 100 78,500 70,100 62,300 110 72,500 64,500 57,100 90 102,800 92,100 82,200 95 99,500 89,100 79,500 100 96,200 86,100 76,700 110 89,100 79,500 70,400 90 118,900 106,300 94,600 95 115,000 102,700 91,400 100 110,900 99,000 88,000 110 102,300 91,000 80,500 90 135,400 121,500 108,500 95 131,200 117,700 105,100 100 126,900 113,800 101,600 110 118,200 105,800 94,100 90 165,500 147,800 130,800 95 158,800 141,700 125,400 100 152,100 135,800 120,300 110 139,600 124,500 110,500 90 194,300 172,500 152,600 95 186,100 165,500 146,700 100 178,100 158,700 140,900 110 162,900 145,800 129,800 90 223,400 199,600 178,000 95 214,500 192,100 171,700 100 205,900 184,900 165,600 110 189,900 171,600 154,300 90 267,300 239,300 214,100 95 257,900 231,100 206,900 100 248,300 222,700 199,500 110 228,300 205,100 183,600 90 324,700 289,000 258,100 95 306,600 273,200 245,200 100 288,200 257,100 232,000 110 250,000 225,500 205,700 9

Performance Data Model BDV Medium Temperature 10 R-448A/R-449A Model BDV 0752M6 0762M6 0802M6 1002M6 1202M6 1502M6 2002M6 2502M6 3002M6 3502M6 4002M6 Ambient Temp. F 25 F Saturated Suction Temperature F 20 F 15 F 10 F 5 F 90 67,500 60,600 54,300 48,400 43,000 95 65,100 58,500 52,400 46,700 41,500 100 62,700 56,300 50,400 45,000 39,900 110 57,700 51,900 46,400 41,400 36,700 90 75,600 67,800 60,600 53,800 47,600 95 72,800 65,300 58,300 51,800 45,800 100 70,000 62,700 56,000 49,700 44,000 110 64,200 57,500 51,300 45,600 40,300 90 91,700 82,300 73,600 65,300 57,700 95 88,200 79,300 70,700 62,800 55,300 100 84,700 76,100 67,800 60,100 52,900 110 77,600 69,600 61,900 54,600 47,700 90 112,200 100,800 90,100 80,100 70,900 95 108,300 97,200 86,800 77,100 68,200 100 104,300 93,600 83,500 74,100 65,300 110 95,900 85,900 76,500 67,600 59,300 90 129,900 116,400 103,900 92,100 81,400 95 125,100 112,200 100,000 88,600 78,200 100 120,100 107,700 96,000 85,000 74,800 110 110,200 98,600 87,700 77,300 67,600 90 150,300 135,000 120,800 107,300 94,800 95 145,100 130,400 116,600 103,500 91,400 100 139,900 125,700 112,400 99,700 87,800 110 129,400 116,400 103,900 91,900 80,700 90 185,300 166,600 149,400 133,300 118,500 95 178,500 160,500 143,900 128,300 114,100 100 171,600 154,200 138,200 123,300 109,600 110 157,700 141,600 126,900 113,100 100,300 90 210,100 188,300 168,400 149,900 132,900 95 202,700 181,800 162,400 144,600 128,100 100 195,200 175,000 156,400 139,100 123,200 110 180,100 161,300 144,000 127,900 113,100 90 247,300 222,700 199,300 177,200 156,200 95 238,300 214,500 191,900 170,500 150,200 100 229,100 206,000 184,400 163,600 144,000 110 209,400 188,200 168,300 149,100 131,000 90 303,500 273,300 244,600 217,600 192,400 95 294,300 265,100 237,300 210,900 186,500 100 284,800 256,800 229,800 204,200 180,300 110 265,700 239,600 214,300 190,200 167,600 90 361,800 325,400 291,000 258,500 228,400 95 350,800 315,700 282,300 250,700 221,400 100 339,700 305,800 273,500 242,800 214,200 110 317,100 285,500 255,300 226,500 199,500

AWEF Values: Medium/High Temperature Condensing Units - Cooler Application Model Outdoor R404A/R507A R407A/R407F R407C R448A/R449A BDV0752M6 9.45 8.78 8.32 8.92 BDV0762M6 9.53 8.90 8.44 9.01 BDV0802M6 10.11 9.27 8.82 9.37 BDV1002M6 9.75 9.27 8.82 9.35 BDV1202M6 9.68 9.35 8.72 9.46 BDV1502M6 9.02 8.65 8.02 8.71 BDV2002M6 9.34 8.89 8.56 9.03 BDV2502M6 9.18 8.45 8.21 8.52 BDV3002M6 9.05 8.56 8.32 8.68 BDV3502M6 9.41 8.78 8.27 8.91 BDV4002M6 8.93 8.54 8.41 8.72 These refrigeration systems are designed and certified for use in walk-in cooler applications. 11

Performance Data Model BDV Low Temperature R-404A or R-507 Model BDV 0602L6 Ambient Temp. F 0 F -10 F Saturated Suction Temperature F -15 F -20 F -30 F -40 F 90 55,500 44,800 39,800 35,100 26,900 20,400 95 53,000 42,700 37,900 33,400 25,400 19,000 100 50,500 40,600 36,000 31,600 23,900 17,600 110 45,400 36,500 32,200 28,200 20,900 14,900 90 64,200 52,000 46,300 40,900 31,400 23,900 0752L6 95 61,300 49,700 44,100 38,900 29,700 22,300 100 58,400 47,300 42,000 37,000 28,000 20,700 110 52,600 42,600 37,700 33,100 24,600 17,400 90 78,600 63,600 56,600 50,000 38,400 29,200 0902L6 95 75,200 60,800 54,000 47,700 36,300 27,400 100 71,900 58,000 51,400 45,300 34,300 25,500 110 65,100 52,400 46,300 40,500 30,300 21,800 90 86,000 70,400 62,700 55,700 43,000 32,800 1002L6 95 82,300 67,100 59,800 53,000 40,700 30,600 100 78,700 64,000 57,000 50,300 38,300 28,500 110 71,600 57,800 51,300 45,000 33,700 24,200 90 89,100 73,000 64,900 57,400 43,900 32,900 1202L6 95 84,900 69,400 61,800 54,500 41,300 30,300 100 80,800 66,000 58,800 51,700 38,700 27,800 110 72,400 59,300 52,600 46,100 33,600 22,400 90 117,500 96,600 86,700 77,300 60,000 45,500 1502L6 95 112,100 92,100 82,500 73,400 56,700 42,600 100 106,800 87,600 78,300 69,600 53,500 39,800 110 95,900 78,500 70,100 61,900 47,100 34,100 90 139,400 115,800 103,700 92,400 71,500 52,400 2202L6 95 132,200 109,500 98,300 87,400 67,100 49,500 100 125,000 103,500 92,800 82,400 62,800 45,600 110 110,500 91,500 81,900 72,400 54,200 37,800 90 175,500 144,100 128,300 113,700 87,400 65,500 2702L6 95 167,400 136,800 122,100 107,900 82,300 60,900 100 159,900 130,000 115,900 102,200 77,300 56,200 110 137,000 116,300 103,300 90,700 67,200 47,100 90 193,000 158,000 142,500 125,000 97,000 74,000 3002L6 95 183,400 150,200 134,100 118,700 90,800 68,200 100 173,900 142,300 126,900 112,200 84,900 62,600 110 154,700 126,300 112,300 98,500 73,400 51,800 12

Performance Data Model BDV Low Temperature Demand Cooling is required for all applications R-407A/R-407F Model BDV 0602L6 Ambient Temp. F 0 F -10 F Saturated Suction Temperature F -15 F -20 F -30 F -40 F 90 52,800 40,300 34,900 30,000 21,500 14,100 95 50,500 38,400 33,200 28,400 20,100 13,600 100 48,300 36,500 31,500 26,800 18,800 12,400 110 43,700 32,700 28,000 23,600 16,000 9,800 90 62,200 48,300 42,300 36,800 26,900 17,800 0752L6 95 59,700 46,100 40,300 34,800 25,200 16,300 100 57,100 43,900 38,200 32,900 23,400 14,700 110 52,100 39,600 34,100 29,000 19,900 12,400 90 76,200 58,500 50,700 43,600 31,300 20,600 0902L6 95 72,900 55,700 48,200 41,300 29,300 18,800 100 69,600 53,000 45,700 39,000 27,200 17,000 110 62,800 47,400 40,500 34,200 23,100 13,200 90 82,700 63,600 55,200 47,500 34,100 22,400 1002L6 95 79,000 60,500 52,400 45,000 31,900 20,500 100 75,400 57,500 49,600 42,400 29,600 18,500 110 67,900 51,400 44,000 37,200 25,100 14,900 90 93,700 73,500 64,100 55,200 39,000 25,500 1202L6 95 89,300 70,000 60,900 52,200 36,500 24,000 100 85,000 66,300 57,500 49,200 33,900 21,100 110 75,700 58,600 50,500 42,600 28,400 16,200 90 112,100 88,700 77,800 67,600 49,100 33,800 1502L6 95 107,200 84,700 74,200 64,400 46,500 31,600 100 102,300 80,700 70,600 61,100 43,900 29,300 110 92,500 72,600 63,300 54,400 38,300 24,700 90 142,800 109,700 95,200 82,100 60,400 45,100 2202L6 95 136,600 104,600 90,600 78,000 57,300 43,100 100 130,400 99,400 85,900 73,800 54,100 41,000 110 117,400 88,700 76,200 65,000 47,500 36,500 90 166,000 128,800 112,300 97,000 69,200 44,100 2702L6 95 159,200 123,000 107,000 92,000 66,200 40,300 100 151,900 117,000 101,400 86,900 60,400 36,200 110 136,900 104,300 89,500 75,700 51,600 27,200 90 199,000 155,000 135,000 116,900 83,700 51,600 3002L6 95 190,300 147,500 128,500 110,700 78,200 46,800 100 181,400 140,000 121,600 104,300 72,500 43,200 110 162,700 124,200 106,800 90,500 61,600 32,100 13

Performance Data Model BDV Low Temperature Demand Cooling is required for all applications R-448A/R-449A Model BDV Ambient Temp. F 0 F -10 F Saturated Suction Temperature F -15 F -20 F -30 F -40 F 90 51,600 39,300 34,000 29,300 21,400 15,400 0602L6 95 49,600 37,600 32,400 27,800 20,100 14,300 100 47,600 35,900 30,900 26,300 18,900 13,100 110 43,300 32,300 27,500 23,300 16,200 10,700 90 60,900 47,100 41,300 35,900 26,600 18,600 0752L6 95 58,600 45,100 39,300 34,100 25,000 17,000 100 56,300 43,100 37,400 32,300 23,300 15,500 110 51,700 39,000 33,500 28,600 19,900 12,300 90 74,800 57,300 49,700 42,900 31,200 21,600 0902L6 95 71,800 54,800 47,400 40,700 29,300 19,700 100 68,800 52,200 45,000 38,500 27,300 17,800 110 62,500 46,900 40,100 33,900 23,100 13,900 90 81,200 62,300 54,100 46,700 34,000 23,500 1002L6 95 77,900 59,600 51,600 44,300 31,800 21,500 100 74,500 56,700 48,900 41,800 29,600 19,400 110 67,700 50,900 43,500 36,800 25,100 14,600 90 92,100 71,900 62,700 54,000 38,700 26,600 1202L6 95 88,100 68,700 59,700 51,200 36,300 24,400 100 83,900 65,200 56,500 48,300 33,700 22,100 110 75,400 58,100 49,900 42,100 28,400 17,500 90 109,600 86,400 75,700 65,800 48,600 35,500 1502L6 95 105,200 82,800 72,400 62,800 46,200 33,300 100 100,700 79,100 69,100 59,800 43,600 31,100 110 91,600 71,500 62,200 53,500 38,300 26,500 90 138,100 106,300 92,900 80,800 59,100 37,800 2202L6 95 132,700 101,700 88,600 76,800 55,500 35,400 100 127,100 97,100 84,300 72,600 51,700 32,000 110 116,000 87,600 75,500 64,300 44,200 25,100 90 163,100 125,800 109,500 94,600 68,600 46,500 2702L6 95 156,800 120,500 104,600 90,000 64,400 42,700 100 150,000 114,900 99,400 85,200 60,000 38,600 110 136,000 103,000 88,300 74,500 49,300 33,600 90 196,000 151,700 132,100 114,400 82,700 55,200 3002L6 95 188,000 144,900 126,000 108,600 77,500 50,300 100 179,700 137,900 119,500 102,500 72,000 45,100 110 162,200 123,100 105,600 89,200 59,900 39,100 14

Specifications and Dimensions Model BDV Model BDV Compressor Condenser Fan Data Connections No. Fans Dia. Liquid Suction Receiver (90% Full) R404A Lbs. Dim. Info. See Figure Approx. Net Weight Lbs. 0752M6 2DL3R78KE 2 24 5/8 1-3/8 93 / 81 A 1,550 0762M6 2DA3R89KE 2 24 5/8 1-3/8 93 / 81 A 1,550 0802M6 3DA3R10ME 2 24 5/8 1-5/8 93 / 81 A 1,650 1002M6 3DB3R12ME 2 26 5/8 1-5/8 93 / 81 B 1,725 1202M6 3DF3R15ME 2 26 7/8 2-1/8 93 / 81 B 1,750 1502M6 3DS3R17ME 2 30 7/8 2-1/8 142 / 123 C 1,780 2002M6 4DBNR20ME 2 30 7/8 2-1/8 142 / 123 C 1,860 2502M6 4DHNR22ME 3 30 1-1/8 2-1/8 142 / 123 D 1,950 3002M6 4DJNR28ME 3 30 1-1/8 2-1/8 216 / 188 D 1,950 3502M6 6DHNR35ME 3 30 1-1/8 2-1/8 216 / 188 D 2,800 4002M6 6DJNR40ME 4 30 1-1/8 2-1/8 216 / 188 E 3,000 0602L6 3DA3F28KE 2 24 5/8 1-3/8 81 A 1,600 0752L6 3DB3F33KE 2 24 5/8 1-3/8 81 A 1,600 0902L6 3DF3F40KE 2 24 5/8 1-5/8 81 A 1,650 1002L6 3DS3F46KE 2 24 5/8 1-5/8 81 A 1,650 1202L6 4DBNF54KE 2 24 5/8 1-5/8 81 A 1,700 1502L6 4DHNF63KE 2 26 7/8 2-1/8 81 B 1,850 2202L6 4DJNF76KE 2 30 7/8 2-1/8 81 C 2,120 2702L6 6DHNF93KE 2 30 1-1/8 2-1/8 123 C 2,180 3002L6 6DJNF11ME 2 30 1-1/8 2-1/8 123 C 2,200 15

Dimensions (Inches) Model BDV A 55.5 O 1.38 X 1.75K.O. 1.76 FRAME C/L O 2.50 K.O. 44.50 6.64 8.46 10.14 11.58 4.02 15.00 O 3.00 99.22 LIQUID 109.57 SUCTION 120 6.56 9.27 LIQUID SUCTION 15.00 B 55.5 O 1.38 X 1.75K.O. 1.76 FRAME C/L O 2.50K.O. 44.5 6.66 8.46 10.1411.58 4.03 15.00 O 3.00 99.34 LIQUID 109.48 SUCTION 144.00 15.00 7.41 9.70 LIQUID SUCTION C 55.5 O 1.38 X 1.75K.O. 1.76 FRAME C/L O 2.50K.O. 44.5 6.66 8.46 10.1411.58 4.03 15.00 O 3.00 99.34 LIQUID 142.75 148.25 SUCTION 170.68 15.00 7.41 9.70 LIQUID SUCTION D 55.5 O 1.38 X 1.75K.O. 1.76 FRAME C/L O 2.50 K.O. 44.5 6.66 8.46 10.1411.58 4.03 15.00 O 3.00 99.50 LIQUID 148.25 SUCTION 225.67 15.00 7.41 LIQUID E 57.5 1.76 FRAME C/L O 2.50 K.O. 44.7 O 1.38 X 1.75K.O. 10.46 12.14 13.58 4.10 6.73 15.00 O 3.00 99.50 LIQUID 125.00 9.41 LIQUID 11.70 LIQUID 15.00 148.25 SUCTION 280.05 16

Electrical Data Model BDV 208-230 Volts Model BDV Compressor Compressor Independent (STD) System Power Cond. RLA LRA No. Fans Fan FLA MCA MOP Evap Powered From Condensing Unit Evap Max Amps MCA MOP 0752M6 2DL3R78KE 28.3 169 2 5.2 40.6 60 7.8 48.4 70 0762M6 2DA3R89KE 28.7 169 2 5.2 41.1 60 7.8 48.9 70 0802M6 3DA3R10ME 36.8 215 2 5.2 51.2 80 10.4 61.6 90 1002M6 3DB3R12ME 39.1 215 2 9.6 58.5 90 13.8 72.3 110 1202M6 3DF3R15ME 43.2 275 2 9.6 63.6 100 13.8 77.4 110 1502M6 3DS3R17ME 53.5 275 2 14.0 80.9 125 19.8 100.7 150 2002M6 4DBNR20ME 59.7 308 2 14.0 88.6 125 21.0 109.6 150 2502M6 4DHNR22ME 73.7 428 3 21.0 113.1 175 27.6 140.7 200 3002M6 4DJNR28ME 84.4 470 3 21.0 126.5 200 39.6 166.1 250 3502M6 6DHNR35ME 96.2 565 3 21.0 141.3 225 42.0 183.3 250 4002M6 6DJNR40ME 126.9 594 4 28.0 186.6 300 56.0 242.6 350 0602L6 3DA3F28KE 24.0 150 2 5.2 35.2 50 12.0 47.2 70 0752L6 3DB3F33KE 27.6 161 2 5.2 39.7 60 18.0 57.7 80 0902L6 3DF3F40KE 33.2 215 2 5.2 46.7 80 24.0 70.7 100 1002L6 3DS3F46KE 37.2 215 2 5.2 51.7 80 24.0 75.7 110 1202L6 4DBNF54KE 40.9 220 2 5.2 56.3 90 24.0 80.3 110 1502L6 4DHNF63KE 47.2 278 2 9.6 68.6 110 24.6 93.2 125 2202L6 4DJNF76KE 57.7 374 2 14.0 86.1 125 24.6 110.7 150 2702L6 6DHNF93KE 72.4 450 2 14.0 104.5 175 24.6 129.1 200 3002L6 6DJNF11ME 85.8 470 2 14.0 121.3 200 24.6 145.9 225 *230/6/60 MCA = Minimum Circuit Ampacity MOP = Maximum Overcurrnent Protection Independent Vs. Single Power Supplies Independent Power Supplies for Condensing Units and Unit Coolers (Std) In this option, a separate high voltage power supply is run to each evaporator and the condensing unit Low voltage control wiring is run between the condensing unit and each evaporator (including evaporator sensor, liquid solenoid and evaporator control contactor(s) Single Power Supply for Condensing Unit Providing Power to Unit Coolers In this option, a power supply is run to the condensing unit and high voltage wiring is run from the condensing unit to power the fan motor and drain pan heaters in each evaporator Low voltage control wiring is run between the condensing unit and each evaporator for the evaporator sensor and liquid solenoid Advantages Electrician can run simple point-to-point power supplies without having to understand the control circuit wiring Evaporator disconnect switch wiring is simplified (if required) Refrigeration contractors can generally run the low voltage wiring with the refrigeration piping and make these wiring connections with a good understanding of the control circuit function The condensing unit wire size and fusing requirements are minimized because they don t include a worst-case remote evaporator load Lower cost installation solution Advantages A benefit for retrofit situations if there is existing control wiring that can be employed In applications where there is limited evaporator accessibility (ex: controlled atmosphere rooms) 17

Electrical Data Model BDV 460 Volts Model BDV Compressor Compressor Independent (STD) System Power Cond. RLA LRA No. Fans Fan FLA MCA MOP Evap Powered From Condensing Unit Evap Max Amps MCA MOP 0752M6 2DL3R78KE 12.4 85 2 2.6 18.1 30 3.0 21.1 30 0762M6 2DA3R89KE 12.6 85 2 2.6 18.4 30 3.0 21.4 30 0802M6 3DA3R10ME 17.9 106 2 2.6 25 40 4.7 29.7 45 1002M6 3DB3R12ME 17.9 106 2 4.8 27.2 45 6.9 34.1 50 1202M6 3DF3R15ME 21.2 138 2 4.8 31.3 50 6.9 38.2 50 1502M6 3DS3R17ME 26.0 138 2 7.0 39.5 60 9.9 49.4 70 2002M6 4DBNR20ME 29.9 154 2 7.0 44.4 70 10.5 54.9 80 2502M6 4DHNR22ME 36.9 214 3 10.5 56.6 90 13.8 70.4 100 3002M6 4DJNR28ME 42.2 235 3 10.5 63.3 100 19.8 83.1 125 3502M6 6DHNR35ME 48.1 283 3 10.5 70.6 110 21.0 91.6 125 4002M6 6DJNR40ME 63.5 297 4 14.0 93.4 150 28.0 121.4 175 0602L6 3DA3F28KE 10.8 77 2 2.6 16.1 25 6.0 22.1 30 0752L6 3DB3F33KE 14.1 83 2 2.6 20.2 30 9.0 29.2 40 0902L6 3DF3F40KE 15.0 106 2 2.6 21.4 35 12.0 33.4 45 1002L6 3DS3F46KE 16.7 106 2 2.6 23.5 40 12.0 35.5 50 1202L6 4DBNF54KE 20.4 110 2 2.6 28.1 45 12.0 40.1 60 1502L6 4DHNF63KE 23.6 139 2 4.8 34.3 50 12.3 46.6 70 2202L6 4DJNF76KE 28.8 187 2 7.0 43 70 12.3 55.3 80 2702L6 6DHNF93KE 36.2 225 2 7.0 52.3 80 12.3 64.6 100 3002L6 6DJNF11ME 42.9 235 2 7.0 60.6 100 12.3 72.9 110 MCA = Minimum Circuit Ampacity Independent Vs. Single Power Supplies MOP = Maximum Overcurrent Protection All selection require 3 phase power supply. Independent Power Supplies for Condensing Units and Unit Coolers (Std) In this option, a separate high voltage power supply is run to each evaporator and the condensing unit Low voltage control wiring is run between the condensing unit and each evaporator (including evaporator sensor, liquid solenoid and evaporator control contactor(s) Single Power Supply for Condensing Unit Providing Power to Unit Coolers 18 In this option, a power supply is run to the condensing unit and high voltage wiring is run from the condensing unit to power the fan motor and drain pan heaters in each evaporator Low voltage control wiring is run between the condensing unit and each evaporator for the evaporator sensor and liquid solenoid Advantages Electrician can run simple point-to-point power supplies without having to understand the control circuit wiring Evaporator disconnect switch wiring is simplified (if required) Refrigeration contractors can generally run the low voltage wiring with the refrigeration piping and make these wiring connections with a good understanding of the control circuit function The condensing unit wire size and fusing requirements are minimized because they don t include a worst-case remote evaporator load Lower cost installation solution Advantages A benefit for retrofit situations if there is existing control wiring that can be employed In applications where there is limited evaporator accessibility (ex: controlled atmosphere rooms)

Hot Gas Unit Cooler Typical Factory Piping Electrical Connections (this side) Note: Control contactors mount under a cover on front of unit (not shown) Air Flow Suction Connection Liquid Connection Liquid Solenoid Valve Thermostatic Expansion Valve Check Valves Check Valve Suction P-Trap Hot Gas Drain Pan Shown 19

Medium Profile Hot Gas Defrost Unit Coolers for use with the Bohn Mohave Hot Gas Defrost System Standard Features Mounted and wired control contactors Schrader valve provided for suction pressure measurement Permanent split capacitor (PSC), thermally protected, lifetime-lubricated motors in 115, 208-230 and 460 volts All internal panels have been isolated which provides for quiet unit operation Motors plug into wiring harness for easier servicing Factory mounted liquid line solenoid valve, TXV, and distributor nozzle Electric drain pan heaters Four and six FPI coils Single point power supply Suction P trap Insulated drain pan on low temp systems Options UL approved totally enclosed motors EC motors (optional) available factory-installed or as a drop-in replacement through InterLink Commercial Refrigeration Parts in 115/1/60, 208-230/1/60 voltages Available in stainless steel cabinets and/or drain pan* Copper fin or coil coatings (Electrofin, and BohnGuard ) Mounted hot gas drain pan loop Evaporator control contactors mounted in condensing unit Insulated drain pan for medium temp systems * aluminum inner drain pan with insulated outer stainless steel drain pan E Solutions branded products and options are designed to exceed current energy and environmental standards. We have made a conscious commitment to developing environmentally innovative products that allow our customers to make energy efficient, eco-conscious choices. Products included in the E Solutions portfolio reduce costs, improve bottom lines, and enhance both equipment performance and service life. Choosing EC motors for this portion of the system decreases energy consumption and increases energy cost savings. Nomenclature BMG (6 FPI), BMF (4 FPI) BMG 190 B G A Vintage Code Hot Gas System Evaporator Capacity X 100 Voltage: A = 115/1/60 B = 208-230/1/60 M = 460/1/60 20

Medium Profile Unit Coolers Capacity and Electrical Data Hot Gas Defrost Model 10 F. TD -20 F. SST CFM No. Fan Data Motor Data (Total Amps) Electrical Supply Requirements Dia. (In.) * Air Throw (Ft.) Diffused (Std.) Models BMG/BMF 60 Hz. Extended (Opt.) HP 115/ 1/60 PSC Motor EC Motor 115V 208-230V 460V 208-230/ 1/60 BMG (6 FPI MODELS) 460/ 1/60 115/ 1/60 208-230/ 1/60 MCA MOP MCA MOP MCA MOP BMG 260 26,000 4,500 2 18 50 65 1/4 8.0 3.6 2.0 5.6 2.8 9.0 20 4.5 20 2.3 15 BMG 310 31,000 7,050 3 18 50 65 1/4 12.0 5.4 3.0 8.4 4.2 13.0 20 6.0 20 3.3 15 BMG 390 39,000 6,750 3 18 50 65 1/4 12.0 5.4 3.0 8.4 4.2 13.0 20 6.0 20 3.3 15 BMG 430 43,000 8,800 4 18 50 65 1/4 16.0 7.2 4.0 11.2 5.6 17.0 20 8.0 20 4.3 15 BMG 520 52,000 8,400 4 18 50 65 1/4 16.0 7.2 4.0 11.2 5.6 17.0 20 8.0 20 4.3 15 BMF (4 FPI MODELS) BMF 220 22,000 4,650 2 18 50 65 1/4 8.0 3.6 2.0 5.6 2.8 9.0 20 4.5 20 2.3 15 BMF 250 25,000 7,350 3 18 50 65 1/4 12.0 5.4 3.0 8.4 4.2 13.0 20 6.0 20 3.3 15 BMF 330 33,000 6,975 3 18 50 65 1/4 12.0 5.4 3.0 8.4 4.2 13.0 20 6.0 20 3.3 15 BMF 370 37,000 9,100 4 18 50 65 1/4 16.0 7.2 4.0 11.2 5.6 17.0 20 8.0 20 4.3 15 BMF 440 44,000 8,700 4 18 50 65 1/4 16.0 7.2 4.0 11.2 5.6 17.0 20 8.0 20 4.3 15 *Standard molded fan guards allow for extended air throw; optional wire guards promote air diffusion Air throw data based on 12-ft. high ceilings with no obstructions where velocity drops to 50 FPM Data appropriate for electric and hot gas defrost drain pan MCA = Minimum Circuit Ampacity MOP = Maximum Overcurrent Protection Physical Data Model No. of Fans Hot Gas Defrost Physical Data FPI MLG6 (6 FPI Models) Connections (Inches) Approximate Liquid Suction Net Weight (lbs.) BMG 260 2 6 1/2 1-3/8 ODF 216 BMG 310 3 6 1/2 1-3/8 ODF 242 BMG 390 3 6 1/2 1-3/8 ODF 269 BMG 430 4 6 1/2 1-5/8 ODF 312 BMG 520 4 6 1/2 1-5/8 ODF 345 MLG4 (4 FPI Models) BMF 220 2 4 1/2 1-3/8 ODF 214 BMF 250 3 4 1/2 1-3/8 ODF 239 BMF 330 3 4 1/2 1-3/8 ODF 266 BMF 370 4 4 1/2 1-5/8 ODF 307 BMF 440 4 4 1/2 1-5/8 ODF 340 21

Medium Profile Unit Coolers Dimensional Data 18-7/8" 480 mm 17-1/2" 444 mm 24" 608 mm Air Flow 23-1/4" 590 mm 2-1/2" 64 mm 15-1/2" 390 mm 22-3/4" 578 mm Refrigerant Connection End Electrical Connection End 6 FPI Models Hot Gas BMG *Factory piping extends behind the unit cooler and may add up to 6 inches to this dimension. 4 FPI Models Hot Gas BMF Dimensions A B C D E F in. mm in. mm in. mm in. mm in. mm in. mm BMG260 BMF220 67-5/16 1,710 58-1/4 1,480 - - - - - - 4-15/16 125 BMG310 BMF250 95-5/16 2,420 86-1/4 2,190 - - - - - - 4-15/16 125 BMG390 BMF330 95-5/16 2,420 86-1/4 2,190 - - - - - - 4-15/16 125 BMG430 BMF370 123-5/16 3,130 114-1/4 2,900 56 1,420 58-1/4 1,480 - - 4-15/16 125 BMG520 BMF440 123-5/16 3,130 114-1/4 2,900 56 1,420 58-1/4 1,480 - - 4-15/16 125 NOTE: Evaporator mounting brackets accept up to 1/2" hanger rod 22

Large Hot Gas Defrost Unit Coolers for use with the Bohn Mohave Hot Gas Defrost System Standard Features Mill finish aluminum provides an attractive design and structurally sound cabinet Thermo-Flex (with five-year limited warranty) is innovative, eliminates leaks, and reduces risk of refrigerant loss 850 RPM motors are quiet and reliable Liquid line solenoid wiring harness for faster installation Suction Schrader fitting for easier suction temperature measurement Captive fasteners on access panels for easy servicing Long air throw is ideal for large warehouse and industrial applications Electric drain pan heater Insulated drain pan heater for low temp systems Optional Features High CFM motor and fan combinations (208-230/3/60 and 460/3/60) Totally enclosed motors (208-230/3/60 and 460/3/60) Long air throw collars for large warehouse and industrial applications More factory mounted features for easier field installation (Consult factory) Evaporator control contactors mounted in condensing unit Insulated drain pan for medium temperature systems Mounted hot gas drain pan loop Nomenclature BHG (6 FPI), F (4 FPI) BHG 850 B P G A Vintage Capacity x 100 (standard motor/fan blade) Optional Motor Code T = Totally Enclosed Motors V = High CFM Option P = 3 Phase Motor Voltage Code A = 115/1/60 B = 208-230/1/60 C = 208-230/3/60 D = 460/3/60 M = 460/1/60 Hot Gas System Evap. 23

Large Unit Coolers Hot Gas Defrost Capacity & Electrical Data - 60Hz. Hot Gas Defrost Model 10 F. TD -20 F. SST Std. CFM No. Fan Data Dia. (In.) Air Throw (Ft.) Data appropriate for electric and hot gas defrost drain pan Note: TD = Temperature Difference = (Room temperature - saturated suction temperature) MCA = Minimum Circuit Ampacity MOP = Maximum Overcurrent Protection Std. with Collar HP 208-230/1/60 Wired 1 Phase Wired 3 Phase 6 FPI MODELS Standard Motor Data 208-230/3/60 Total Amps 460/1/60 Wired 1 Phase Electrical Supply Requirements 208-230V 460V Wired 3 Phase 460/3/60 MCA MOPD MCA MOP BHG 450 45,000 9,000 2 24 70 85 1/2+ 6.4 5.2 3.4 2.6 9.2 20 4.6 15 BHG 550 55,000 9,000 2 24 70 85 1/2+ 6.4 5.2 3.4 2.6 9.2 20 4.6 15 BHG 640 64,000 12,600 3 24 70 85 1/2+ 5.5 7.8 3.0 3.9 12.0 20 5.9 15 BHG 740 74,000 12,600 3 24 70 85 1/2+ 5.5 7.8 3.0 3.9 12.0 20 5.9 15 BHG 810 81,000 16,800 4 24 70 85 1/2+ 8.7 10.4 4.7 5.2 18.0 20 8.7 15 BHG 950 95,000 16,800 4 24 70 85 1/2+ 8.7 10.4 4.7 5.2 18.0 20 8.7 15 BHG 1020 102,000 20,700 3 30 100 115 1 13.8 6.9 18.0 25 8.7 15 BHG 1200 120,000 20,700 3 30 100 115 1 13.8 6.9 18.0 25 8.7 15 BHG 1390 139,000 24,300 3 30 100 115 1-1/2 19.8 9.9 21.5 40 10.7 20 BHG 1650 165,000 26,550 3 30 120 140 1-1/2 21.0 10.5 22.8 40 11.4 20 BHG 2120 212,000 35,400 4 30 120 140 1-1/2 28.0 14.0 29.9 45 14.9 25 4 FPI MODELS BHF 400 40,000 9,400 2 24 70 85 1/2+ 6.4 5.2 3.4 2.6 9.2 20 4.6 15 BHF 480 48,000 9,400 2 24 70 85 1/2+ 6.4 5.2 3.4 2.6 9.2 20 4.6 15 BHF 560 56,000 13,200 3 24 70 85 1/2+ 5.5 7.8 3.0 3.9 12.0 20 5.9 15 BHF 650 65,000 13,200 3 24 70 85 1/2+ 5.5 7.8 3.0 3.9 12.0 20 5.9 15 BHF 710 71,000 17,600 4 24 70 85 1/2+ 8.7 10.4 4.7 5.2 18.0 20 8.7 15 BHF 840 84,000 17,600 4 24 70 85 1/2+ 8.7 10.4 4.7 5.2 18.0 20 8.7 15 BHF 890 89,000 21,600 3 30 100 115 1 13.8 6.9 18.0 25 8.7 15 BHF 1050 105,000 21,600 3 30 100 115 1 13.8 6.9 18.0 25 8.7 15 BHF 1220 122,000 25,200 3 30 100 115 1-1/2 19.8 9.9 21.5 40 10.7 20 BHF 1440 144,000 27,600 3 30 120 140 1-1/2 21.0 10.5 22.8 40 11.4 20 BHF 1860 186,000 36,800 4 30 120 140 1-1/2 28.0 14.0 29.9 45 14.9 25 Capacity Correction Factors for Electric and Hot Gas Defrost Units Saturated Suction Temperature F +20-10 -20-30 -40 Saturated Suction Temperature C -7-23 -29-34 -40 Multiply Capacity By 1.15 1.04 1.00 0.90 0.80 24

Large Unit Coolers Hot Gas Defrost High CFM Capacity & Electrical Data - 60Hz. Hot Gas Defrost Model 10 F. TD -20 F. SST Std. CFM No. Fan Data Dia. (In.) Air Throw (Ft.) Std. Standard Motor Data Electrical Supply Requirements Total Amps 208-230V 460V with Collar HP 208-230/3/60 460/3/60 MCA MOP MCA MOP 6 FPI MODELS BHG 450*V 49,500 11,300 2 24 85 100 2 12.0 6.0 13.5 30 6.8 15 BHG 550*V 60,500 11,300 2 24 85 100 2 12.0 6.0 13.5 30 6.8 15 BHG 640*V 70,400 15,900 3 24 85 100 2 18.0 9.0 19.5 35 9.8 15 BHG 740*V 81,400 15,900 3 24 85 100 2 18.0 9.0 19.5 35 9.8 15 BHG 810*V 89,100 21,200 4 24 85 100 2 24.0 12.0 25.5 40 12.8 20 BHG 950*V 104,000 21,200 4 24 85 100 2 24.0 12.0 25.5 40 12.8 20 BHG 1020*V 107,100 23,300 3 30 110 130 3 24.6 12.3 26.7 45 13.3 25 BHG 1200*V 126,000 23,300 3 30 110 130 3 24.6 12.3 26.7 45 13.3 25 BHG 1390*V 146,000 27,200 3 30 110 130 3 24.6 12.3 26.7 45 13.3 25 BHG 1650*V 174,000 29,700 3 30 130 150 3 24.6 12.3 26.7 45 13.3 25 BHG 2120*V 223,000 39,600 4 30 130 150 3 32.8 16.4 34.9 50 17.4 25 4 FPI MODELS BHF 400*V 42,000 12,200 2 24 85 100 2 12.0 6.0 13.5 30 6.8 15 BHF 480*V 50,400 12,200 2 24 85 100 2 12.0 6.0 13.5 30 6.8 15 BHF 560*V 58,800 17,000 3 24 85 100 2 18.0 9.0 19.5 35 9.8 15 BHF 650*V 68,300 17,000 3 24 85 100 2 18.0 9.0 19.5 35 9.8 15 BHF 710*V 74,600 22,600 4 24 85 100 2 24.0 12.0 25.5 40 12.8 20 BHF 840*V 88,200 22,600 4 24 85 100 2 24.0 12.0 25.5 40 12.8 20 BHF 890*V 91,200 23,800 3 30 110 130 3 24.6 12.3 26.7 45 13.3 25 BHF 1050*V 107,600 23,800 3 30 110 130 3 24.6 12.3 26.7 45 13.3 25 BHF 1220*V 125,000 32,800 3 30 110 130 3 24.6 12.3 26.7 45 13.3 25 BHF 1440*V 147,000 30,600 3 30 130 150 3 24.6 12.3 26.7 45 13.3 25 BHF 1860*V 190,000 40,800 4 30 130 150 3 32.8 16.4 34.9 50 17.4 25 Data appropriate for electric and hot gas defrost drain pan. Note: TD = Temperature Difference = (Room temperature - saturated suction temperature) MCA = Minimum Circuit Ampacity MOP = Maximum Overcurrent Protection High CFM models can handle external static pressure up to 1/2 of water High CFM models are designed for operation below +15 F S.S.T. CFM is at 0.0 external static pressure Capacity Correction Factors for Electric and Hot Gas Defrost Units Saturated Suction Temperature F +20-10 -20-30 -40 Saturated Suction Temperature C -7-23 -29-34 -40 Multiply Capacity By 1.15 1.04 1.00 0.90 0.80 25

Large Unit Coolers Physical Specifications - Hot Gas Defrost Hot Gas Defrost Model Size No. of Fans Connections (Inches) Liquid Suction Drain 6 FPI MODELS Approx. Net Weight (Lbs.) BHG 450 2 5/8 OD 1-5/8 OD 1-1/4 FPT 320 BHG 550 2 5/8 OD 1-5/8 OD 1-1/4 FPT 350 BHG 640 3 5/8 OD 2-1/8 OD 1-1/4 FPT 458 BHG 740 3 5/8 OD 2-1/8 OD 1-1/4 FPT 498 BHG 810 4 5/8 OD 2-1/8 OD 1-1/4 FPT 597 BHG 950 4 5/8 OD 2-1/8 OD 1-1/4 FPT 647 BHG 1,020 3 5/8 OD 2-1/8 OD 1-1/4 FPT 842 BHG 1,200 3 7/8 OD 2-1/8 OD 1-1/4 FPT 904 BHG 1,390 3 7/8 OD 2-1/8 OD 1-1/4 FPT 958 BHG 1,650 3 1-1/8 OD 2-5/8 OD 1-1/4 FPT 1,291 BHG 2,120 4 1-1/8 OD 2-5/8 OD 1-1/4 FPT 1,781 4 FPI MODELS BHG 400 2 5/8 OD 1-5/8 OD 1-1/4 FPT 317 BHG 480 2 5/8 OD 1-5/8 OD 1-1/4 FPT 346 BHG 560 3 5/8 OD 2-1/8 OD 1-1/4 FPT 453 BHG 650 3 5/8 OD 2-1/8 OD 1-1/4 FPT 493 BHG 710 4 5/8 OD 2-1/8 OD 1-1/4 FPT 590 BHG 840 4 5/8 OD 2-1/8 OD 1-1/4 FPT 640 BHG 890 3 5/8 OD 2-1/8 OD 1-1/4 FPT 833 BHG 1,050 3 7/8 OD 2-1/8 OD 1-1/4 FPT 894 BHG 1,220 3 7/8 OD 2-1/8 OD 1-1/4 FPT 947 BHG 1,440 3 1-1/8 OD 2-5/8 OD 1-1/4 FPT 1,276 BHG 1,860 4 1-1/8 OD 2-5/8 OD 1-1/4 FPT 1,761 26

Large Unit Coolers Dimensions Figure 1. 261 4 241 4 67 8 C A B 8 G F 49 16 215 32 291/2* Refrigerant Piping End Accepts 1 2 Hanger Rod Electrical End *Factory piping extends behind the unit cooler and may add up to 6 inches to this dimension Hot Gas Defrost Models Dimensions (Inches) 6 FPI 4 FPI Figure A B C F G BHG 450 BHF 400 1 83-3/32 68-1/8-37-3/16 40-11/32 BHG 550 BHF 480 1 83-3/32 68-1/8-37-3/16 40-11/32 BHG 640 BHF 560 1 105-5/32 90-3/16 45-3/32 37-3/16 40-11/32 BHG 740 BHF 650 1 105-5/32 90-3/16 45-3/32 37-3/16 40-11/32 BHG 810 BHF 710 1 135-7/32 120-1/4 60-1/8 37-3/16 40-11/32 BHG 950 BHF 840 1 135-7/32 120-1/4 60-1/8 37-3/16 40-11/32 27

Large Unit Coolers Dimensions Figure 2. 3521 32 34 79 16 C D E A B G 233 4 F 47 16 32 413 32* Refrigerant Piping End Accepts 5 8 Hanger Rod Electrical End *Factory piping extends behind the unit cooler and may add up to 6 inches to this dimension Hot Gas Defrost Models Dimensions (Inches) 6 FPI 4 FPI Fig. A B C D E F G BHG 1,020 BHF 890 2 135-13/32 120-9/32 40-3/32 80-3/16 44-1/2 50-5/16 BHG 1,200 BHF 1,050 2 135-13/32 120-9/32 40-3/32 80-3/16 44-1/2 50-5/16 BHG 1,390 BHF 1,220 2 135-13/32 120-9/32 40-3/32 80-3/16 50-7/32 55-13/16 BHG 1,650 BHF 1,440 2 142-1/2 127-25/32 42-19/32 85-3/16 50-7/32 55-13/16 2 185-1/2 170-3/8 42-19/32 85-3/16 127-25/32 44-1/2 50-5/16 BHG 2,120 BHF 1,860 2 185-1/2 170-3/8 42-19/32 85-3/16 127-25/32 50-7/32 56-1/4 Air Throw Hot Gas Defrost Models 6 FPI 4 FPI Standard Motor RPM Standard HP Each Air Throw Air Throw with Collar Optional High CFM Motor RPM Optional HP Each Air Throw 450-950 400-840 850 1/2+ 70 85 1,750 2 80 100 1,020-1,390 890-1,220 850 1 & 1-1/2 100 120 1,750 3 115 145 1,650-2,120 1,440-1,860 1,140 1-1/2 120 145 1,750 3 130 150 + Three Phase Motors are 1,140 RPM Air throw data based on 30 ft. ceiling height with no obstructions where velocity drops to 50 FPM Air Throw with Collar 28

REFRIGERATION OPERATION The refrigeration operation of the hot gas system is very similar to a standard refrigeration system. An external thermostat is connected to the hot gas control board at the terminal block connections labeled T-Stat and C (for common). When the normally open contact inside the thermostat closes (a call for cooling), the hot gas control board responds by activating a series of solenoids and contactors (described below) in order to initiate and maintain a refrigeration cycle. Later, when the thermostat contact opens, the hot gas control board deactivates the solenoids in a preset manner in order to safely turn off the refrigeration process and maintain an Off condition. At initial power up, the system defaults to the OFF mode for a minimum of two minutes. Following the two-minute hold off period, the control circuit examines the state of the thermostat input. If the thermostat input signal is activated (closed between T- Stat and C), the system begins the refrigeration startup process. Full refrigeration mode (or COOL mode) is achieved when the control board has activated the solenoids necessary to provide refrigerant flow between the evaporator(s) and the condensing unit (Suction Solenoid and Liquid Line Solenoid), activated the compressor contactor, deployed the appropriate control over the condenser fans, and turned on the evaporator fans. Refrigerant Solenoid and Compressor Contactor Control: The Suction Solenoid is initially activated following the power-up two-minute hold off time. It is maintained in the ON state until a defrost cycle is initiated. The timing of the liquid line solenoid (LLS) activation is based upon the saturated suction temperature (SST) which is calculated from the suction pressure value. If the SST is greater than 15ºF, the compressor contactor is activated before the LLS is activated in order to decrease the suction pressure prior to startup. When the SST drops to -5ºF, the LLS is activated. If the SST does not fall to -5ºF within 2 minutes, Er12 is activated and the system goes to OFF mode. If the SST is 15ºF or less, the LLS is activated immediately. When the SST rises to -10ºF for medium temperature applications or -20ºF for low temperature applications, the compressor contactor is activated. If the SST fails to rise in 2 minutes, ER11 is activated and the system goes to OFF mode. When the thermostat signal is deactivated, the liquid line solenoid is turned off immediately. The compressor contactor will stay activated until the suction pressure falls below the pre-programmed cut out pressure. The compressor contactor and all condenser fan contactors will be deactivated simultaneously. The evaporator fans will continue running. Condenser Fan Control: When the Condensing Unit Model is selected in the Program Review Menu; the program automatically activates the default Head Pressure Control Scheme. Method: Pressure Fan Cycling (PRES) All fans Minimum condensing temperature: 65F The default ON and OFF settings are optimized to maximize energy efficiency while still providing adequate pressure for the thermostatic expansion valve(s) to work properly. The parameters are refrigerant specific. Fans are staged to minimize fluctuations in head pressure during operation. During refrigeration operation, the hot gas controller monitors liquid pressure to determine if each fan should be ON or OFF. These settings and other fan control options may be modified by turning on the Expert Mode (XPRT) in the Program Menu. See Program Review and Optional Controls for more information. Evaporator Fan Control: After initial power-up, the evaporator fans will be turned off. When the system initiates the first cooling cycle, the hot gas controller monitors the temperature value of the evaporator defrost termination sensor mounted on the evaporator suction headers. When the controller determines that the suction header has reached the refreeze setpoint, the evaporator fans will be activated. If there are two evaporators, the fans will be energized by the first sensor to achieve setpoint. Once activated, the evaporator fans will continue to run until either a defrost cycle is initiated, or if the system is placed in SERVICE mode. Anti Short-Cycle Protection: During cooling mode, the control board is programmed to allow a minimum system ON time of 1 minute and a minimum OFF time of 2 minutes. 29

Pump Down At the end of each cooling cycle, when the box temperature is met, the hot gas control system will pump down and turn off the compressor. To pump down, the Liquid Line Solenoid(s) is deactivated and the compressor runs until the pressure measured at the suction accumulator falls below the pre-programmed cut out pressure value, or two minutes has elapsed. The compressor is then turned off until the start of the next cooling cycle. During the pump down process, the LED display will show PMPD. Manual Pump down: A single pole, single throw switch is connected to the Service SW input on the hot gas control board. Activating this switch (closing the contact) will cause the system to pump down and shut off. While in Service mode, the evaporator fans will turn off. Note that the system will not restart until the switch contact has been opened. The hot gas controller will display SERV while in Service mode. The system can also be pumped-down by pressing the SERVICE button twice. To restart the system, press the CLEAR button. 30

DEFROST OPERATION Defrost Timing/Schedule Programming The hot gas controller can be programmed with up to 12 defrost start times. The Program Review menu section describes the process to program or delete a valid start time. Note that clearing a start time by pressing CLEAR and the ENTER will disable all start times following the one being cleared. There must be 30 minutes of elapsed time following a start of defrost before another defrost can be scheduled. A defrost cycle can be initiated manually at any time. Force Defrost Manually To manually force the start of a defrost-cycle, press the FORCE DEFROST button. If the system is in COOL mode, the system will pump down and go to the off mode before the defrost process is started. Defrost Process The defrost process has four steps: Pre-defrost (DEF1) pressure equalization, Defrost operation (DEF2), Postdefrost (DEF3) pressure equalization and drain down, and Refreeze (FREZ). DEF1: Pre-defrost, or defrost step 1, always follows activation of Off mode. If the system is in Cool mode when the defrost cycle is activated, the control will pump down and go to Off mode before activating pre-defrost. The purpose of DEF1 is to equalize the refrigerant pressures between the condensing unit receiver and the evaporator(s). This is accomplished by first deactivating the evaporator fans, and the suction solenoid. Next the Bypass Solenoid and the evaporator Pan Heater contactor are activated. The time duration of the pressure equalization is programmed as EQUT in the PROGRAM REVIEW menu. DEF2: After the equalization time has elapsed, the Bypass Solenoid is deactivated. The Defrost Solenoid is activated 1 second later, followed by the 3-Way valve solenoid 1 second after that. Next, the pressure regulator control algorithm is enabled. The initial position is full open, but it quickly makes adjustments in order to stabilize the pressures and temperatures seen at the inlet of the suction accumulator. The compressor contactor turns on at the same time that the pressure regulator is activated. The ambient temperature is measured, and a determination is made of how many condenser fans should be operating. The correct number of condenser fans is activated at the same time as the compressor contactor. During the DEF2 operation, the pressure regulator continues to maintain the appropriate volume of refrigerant flow through the system based upon the current ambient conditions, the refrigerant type, and the type of cooling application. Termination of defrost is accomplished by either both evaporators reaching their target termination temps, or the liquid pressure measured between the receiver and the condenser coil reaching its target pressure, or the pre-programmed fail safe time. When one of the termination factors is realized, the compressor, condenser fan(s), and the defrost solenoid are turned off. The 3-Way valve and the Pan heaters are left on. The pressure regulator is activated to 100% open, and DEF3 begins. DEF3: Post-defrost has two purposes. The first is the transfer of high pressure refrigerant at the evaporator back to the condenser receiver by way of the pressure regulator. The pressure regulator is open 100% during this step. The second purpose is drain down time for the warm evaporators. This allows the water that was melted off of the coil to drain out of the evaporator drain pan. The time duration for this step is identical to the DEF1 equalization time. After the completion of the delay time period, the 3- way valve and the pan heater contactor are turned off. One second later the suction solenoid is turned on, and then one second after that the compressor turns on. The condenser fan control algorithm is also enabled. When the pressure measured at the suction sensor falls below 20 psig, the liquid line solenoid is activated and the process step changes to refreeze. 31

FREZ: The refreeze step is identical to cooling mode except that the evaporator fans are turned off. This is to allow the evaporator coils to freeze any remaining water that might be left over from the drain down step so that when the fans turn on, the water will not be sprayed into the refrigerated space. When the evaporator reaches the refreeze setpoint, the fans turn on and the system begins a cooling cycle. If the thermostat is satisfied, or deactivated, the system will run a cooling cycle for two minutes and then pump down and shut off. After the compressor is energized, the suction stop valve may be pulsed to limit the suction pressure at the compressor. Mohave Hot Gas Defrost Cycle Diagrams Black = Piping Inactive Gray = Piping Active 32

Mohave Hot Gas Defrost Cycle Diagrams Black = Piping Inactive Gray = Piping Active 33

Notes 34

Notes 35

For more information on Bohn refrigeration products, contact your sales representative or visit us at www.heatcraftrpd.com. A Brand of Heatcraft Refrigeration Products, LLC 2,175 West Park Place Blvd. Stone Mountain, GA 30,087 (800) 537-7,775 www.heatcraftrpd.com Visit our website at www.heatcraftrpd.com for technical literature online. Since product improvement is a continuing effort, we reserve the right to make changes in specifications without notice. 36