48PM Ultra High Efficiency Single Package Gas Heating/Electric Cooling Commercial Rooftop Units with PURON

20---28 Ultra igh Efficiency Single Package Gas eating/electric Cooling Commercial Rooftop Units with PURONR (R---410A) Refrigerant 18 to 25 Nominal Tons Product Data

TABLE OF CONTENTS PAGE FEATURES/BENEFITS... 2 MODEL NUMBER NOMENCLATURE... 6 ARI CAPACITY RATINGS... 7 PYSICAL DATA... 10 OPTIONS AND ACCESSORIES... 14 BASE UNIT DIMENSIONS... 16 ACCESSORY DIMENSIONS... 17 PERFORMANCE DATA... 18 ELECTRICAL DATA... 46 TYPICAL WIRING SCEMATICS... 49 CONTROLS... 55 OPTIONAL EnergyX SYSTEM SEQUENCE OF OPERATIONS... 58 APPLICATION DATA... 60 GUIDE SPECIFICATIONS... 62 Carrier s CENTURION Series commercial packaged rooftops offer: S Puronr environmentally sound refrigerant (R -410A) S Coolingefficienciesupto11.6EERand12.2IPLV S Industry leading sound ratings as low as 82 db S TXV refrigerant metering with cooling operation up to 125_F S Factory -installed umidi -MiZert adaptive dehumidification system S Factory -installed EnergyX, Energy Recovery Ventilator system S inged access doors with doublewall construction S Convertible duct airflow configuration from vertical to horizontal S Models with internally sloped, condensate pan S Slide -out filter rack with up to 4 -in. capabilities S Slide-out blower motor assembly FEATURES/BENEFITS Carrier s Centurion commercial packaged rooftop unit is among Carrier s most efficient, easiest to service, and most reliable rooftop unit utilizing Puron refrigerant and Novation eat Exchanger Technology. Premium Performance The Centurion Series provides ARI (Air Conditioning and Refrigeration Institute) certified cooling EERs (Energy Efficiency Ratio) up to 11.6 and IPLVs (Integrated Part -Load Values) up to 12.4. Gas heating efficiencies are as high as 82%. The unit well exceeds ASRAE (American Society of eating, Refrigeration and Air Conditioning Engineers) 90.1 and ENERGY STARr levels. These efficiency ratings ensure low operating costs, qualify for attractive utility rebates in many areas and earn credits for Leadership in Energy and Environmental Design (LEEDt) issued by Green Building Council. These units offer ultra-high energy efficiency and environmental benefits by utilizing Carrier s Puron (R -410A) refrigerant that eliminates all concerns of mandated refrigerant phase out of R -22 (CFC) in 2010. Each unit has been specifically designed for use with Puron refrigerant to provide years of optimum efficiency. Easy Installation The rooftop units accommodate easy installation. Units come from the factory with either vertical or horizontal discharge and return duct configuration. The entire Centurion Series from 18 to 25 ton only uses 1 roof curb size. The contractor can order and install the roof curb early in the construction stage, before decisions on size requirements are made. Unit controls provide optimum flexibility to meet any application or customer requests. A choice of either base electro -mechanical controls or the popular integrated intelligent ComfortLinkt controls can be ordered from the factory. Large component areas facilitate easy installation for electrical, gas or any other field accessory that may be required. All units feature rigid base rails with rigging holes for easier maneuvering, rigging, and lifting to and on the job site. Durable packaging protects all units during shipment and storage. A full range of time saving factory -installed options are available such as power exhaust, hail guards, breakers, smoke detectors, and air management devices. All factory options are pre -engineered and certified. Large and accessible wiring terminal boards, located in the base unit control box, facilitate connections to room thermostat or sensor, outdoor thermostat(s), and economizer. inged service panels are provided, permitting easy access. Thru -the -curb power and control wiring connections route through both the curb and unit, minimizing roof penetrations. Connections are located in an enclosed area away from harsh ambient conditions, eliminating water entry. Both power and control connections are made on the same side of the unit to simplify installation. In addition, color -coded and labeled wires permit easy tracing and diagnostics. The Carrier Centurion units with ComfortLink controls will operate in the cooling mode down to 0_F ambient temperature, eliminating the need for expensive aftermarket low ambient controllers while providing comfort in the harshest environments. Easy Maintenance and Service Maintaining and servicing a rooftop unit has never been easier thanks to the new Centurion design. Integrated hinged access panels for the filter, indoor-fan motor/blower assembly, compressors, control box, and gas heat areas provide quick access to major components. Each hinged panel has multiple heavy -duty quarter-turn latches and is permanently mounted to the unit, thereby eliminating the concern of a dropped or wind -blown panel puncturing delicate roof materials. Door tie downs are also provided to ensure panels remain stationary, eliminating any panel blowback conditions. Indoor fan system slides out for easy access. Blower wheels, motors, belts, and bearings can be easily serviced and maintained. Evaporator and condenser coils are of a single slab/single pass design that facilitates optimum cleaning without unit disassembly or coils separation as with hybrid type coil designs. Each coil has a dedicated access door to ensure ease of cleaning. 2

Novation (Microchannel) eat Exchanger Technology Carrier s 48/50PM rooftop units include microchannel technology condenser coils. Microchannel technology provides many performance and reliability benefits, that results in a more compact coil design with high coil and overall unit efficiencies. In addition, the surface of the coil is much more robust than a conventional round tube plate fin copper tube aluminum fin coil. S 0.3 fins/inch S 18 louvers per fin S 32 ports per tube (high ratio of internal wetted perimeter to flow area) S Double wall thickness on exposed tube edges S All aluminum coil S Furnace -brazed coil S Epoxy -lined shrink wrap protection of Al to Cu tube joint S No galvanic corrosion between Al and Cu S No wear points between Cu tubes and steel tube sheets S No fin combing Optional ComfortLinkt Controls These controls provide temperature, pressure readings and all diagnostics electronically on the unit by utilizing a large visual display on the Scrolling Marquee. All messages are largely displayed in full text so no decoding is required. All sensor information can be accessed at the Scrolling Marquee, so no gauges are needed. If remote capabilities are necessary, ComfortLink provides network capabilities as well. Optional umidi -MiZert Adaptive Dehumidification System Carrier s umidi -MiZer adaptive dehumidification system is an all-inclusive factory -installed option that can be ordered with any Centurion 20-28 rooftop unit. This system expands the envelope of operation of Carrier s Centurion rooftop products to provide unprecedented flexibility to meet year-round comfort conditions. The umidi -MiZer adaptive dehumidification system has the industry s only dual dehumidification mode setting. The umidi-mizer system includes two new modes of operation. The Centurion 20-28 rooftop coupled with the umidi-mizer system is capable of operating in normal design cooling mode, subcooling mode, and hot gas reheat mode. Normal design cooling mode is when the unit will operate under its normal sequence of operation by cycling compressors to maintain comfort conditions. Subcooling mode will operate to satisfy part load type conditions when the space requires combined sensible and a higher proportion of latent load control. ot Gas Reheat mode will operate when outdoor temperatures diminish and the need for latent capacity is required for sole humidity control. ot Gas Reheat mode will provide neutral air for maximum dehumidification operation. Optional fan and filter indicator switches will alert necessary personnel when filters require changing or the system fan is not operating properly. DedicatedhingedfilterdoorandwithanEasyGlidet slide out filter tracks make air filter replacement easy. This eliminates the need to reach within the unit. All filters are a standard off -the -shelf size for easy availability and lower replacement costs. Compressors are located in a dedicated insulated compartment that allows troubleshooting without creating air bypass that causes misreadings and diagnostics. Optional EnergyXt System EnergyX is a factory integrated, single piece, fully tested and certified energy recovery system specifically designed for the Centurion series rooftop product family (vertical return duct only). The EnergyX system uses exhaust air to provide latent and sensible energy exchange from the intake air prior to entering either the unit DX coil or heating section. This preconditioning of air allows even higher system operating efficiencies and increased comfort control. Operating cost savings of up to 4 tons per 1,000 cfm in cooling and 80,000 Btu/hour per 1,000 cfm in heating can be achieved by the EnergyX system. This also would allow for the base unit capacity requirements reduction and installation cost savings, while providing lower life-cycle energy consumption during operation. The ARI Guideline V Combined Efficiency (CEF) are well above conventional packaged rooftop EER values of the same tonnage size. In addition, EnergyX units are compliant with the ASRAE 62.1-2004 leakage rates for classification of air streams, allowing the EnergyX system to be used for bathroom or toilette exhaust airstreams. EnergyX Energy Recovery Cassette Wheel is rated in accordance with ARI 1060 and has UL/CUL certification. EnergyX system comes with the following standard features: S Doublewall fully gasketed hinged access panels with quarter-turn handles. S Direct or belt drive exhaust and intake blower motors with centrifugal fans. S Exhaust and Intake 2 -in filters (exhaust filters are optional). S Single point electrical connection. S Rotary heat exchanger wheel with desiccant silica gel coating S Economizer and power exhaust option S Stop Jog logic that prevents dirt and contaminants from building on the wheel by rotating the wheel while the pressure differential is sensed (provided with Economizer bypass models only). S Air flow test ports to properly balance the exhaust and intake air. S Pre-assembled exhaust and intake hoods. S Five year wheel warranty. The following optional features are available with the EnergyX system: Frost Protection In extremely cold climates, this option monitors wheel pressure drop and outside temperature. When outside air temperature is 20_F or lower and the pressure drop measurement confirms frost build -up, the wheel activates and exhaust fan energizes to remove accumulated frost. Motor Status Switch This factory option monitors the system pressure drop of all EnergyX motors, which includes the intake, exhaust and rotating energy wheel motors. If lack of pressure is detected, a signal is sent to a field -supplied 24 volt indicator light advising that maintenance is required. Filter Maintenance Switch This factory -installed option monitors pressure drop through both outside air and exhaust air filters. If excess pressure drop is detected, a signal is sent to a field -supplied 24 volt indicator light advising that maintenance is required. Exhaust filters are included. Economizer and Power Exhaust This factory option uses a modulating enthalpy economizer bypass and return damper system for free cooling situations. The bypass method eliminates the need for costly and single -point failure, tilting -wheel mechanisms. 3

Indoor Air Quality Begins With Carrier Rooftops Two -in. disposable filters are factory furnished as standard in every unit with the capability of accommodating 4 -in. filters with Factory Option as well as factory -installed MERV -8 pleated filters. Internally sloped condensate pans are self -draining to ensure minimizing biological growth in rooftop units in accordance with ASRAE Standard 62. All 20-28 units use an epoxy powder-coated steel condensate pan. Unit uses foil -faced cleanable insulation that is securely fastened. Selected panels are mechanically fastened for added support. All edges are either sealed or encapsulated so no fibers enter the airstream. Built -in capability for DCV (demand control ventilation) is standard and integrates with CO 2 sensors, both as a factory -installed option or a field -installed accessory. Belt-driven evaporator fans provide quiet and efficient operation. The belt-driven evaporator-fan with variable-pitch pulleys allows adjustment to available static pressure to meet the job requirements of even the most demanding applications. Multiple motor and drive options are available to match system airflow and static pressure requirements. Durable, Dependable Construction Weather-resistant cabinets are constructed of galvanized steel and all exterior panels are coated with a prepainted baked enamel finish. The paint finish is a non -chalking type that provides years of maximum aesthetic protection. Fully -insulated cabinets include non -fibrous, foil -faced cleanable insulation that is mechanically secured and encapsulated in unit design. Totally enclosed condenser-fan, gas heat vent motor, and evaporator fan motor use permanently lubricated bearings to provide additional unit dependability. The shaft -down design of the condenser fan also ensures protection from the continued harsh environments. Quality and Reliability To assure optimum life expectancy and performance, every rooftop unit is factory run tested prior to shipping to the job site. Individual components are also tested at many levels to assure than only the best parts make it into the Carrier rooftop units. All units are manufactured in a facility registered to ISO 9001:2000. Reliable, fully hermetic scroll compressors with crankcase heater(s) are mounted on a dedicated formed pad and are secured for quiet operation. A TXV (thermostatic expansion valve) for refrigerant metering on each circuit allows efficient operation up to 125_F ambient cooling temperature, with removable power head. Each circuit contains a solid core liquid line filter drier specifically designed for Puronr refrigerant systems. Units contain provisions to eliminate internal damage if a blower motor belt breaks or comes off during operation. Specially located stop bars or strategically located belt drive eliminates damages to sensitive areas such as coils, piping and metering devices. Standard warranty coverage provides one-year parts warranty, 5 -year compressor warranty, and 3 -year condenser coil, and 10 -year aluminized gas heat exchanger warranty (15 years on stainless steel heat exchanger) and 5 -year EnergyX wheel warranty. Integrated Economizers and Outdoor Air Management During a call for cooling, if the outdoor-air temperature is below the control changeover set point, unit control modulates the economizer outdoor-air damper open to achieve the set point. If economizer cooling is not sufficient, additional compressor stages are energized in addition to the economizer. If the outdoor-air temperature is above the changeover set point, the first stage of compression is activated and the economizer stays at minimum position. Economizer operation is controlled by a thermistor that senses outdoor-air temperature. Gear driven, spring return, close on power loss economizers with dry bulb or single enthalpy are available as a factory -installed option as well as two -position motorized dampers, manual dampers and power exhaust. All provide the flexibility to meet any application needs or codes. Ultra Low Sound Outdoor sound levels of 82 db are the lowest in the industry for this type of equipment. Low sound levels allow for maximum installation flexibility and greater indoor environmental comfort, and reduce or eliminate the need for expensive sound barriers requiredbymanyothers. Integrated Gas eating Unit Controller (IGC) Provides 2 -stage eating Capacity Control on All Sizes All ignition components are contained in the compact IGC that is easily accessible for servicing. The IGC control board, designed and manufactured exclusively for Carrier rooftop units, provides built-in diagnostic capability. An 4 LED (light -emitting diode) simplifies troubleshooting by providing visual fault notification and system status confirmation. The IGC also contains an anti -cycle protection for gas heat operation. After 4 continuous automatic cycles on the unit high -temperature limit switch, the gas heat operation is disabled, and an error code is issued. This feature greatly improves reliability of the rooftop unit. The IGC also contains burner control logic for accurate and dependable gas ignition. This LED fault-notification system reduces service person troubleshooting time and minimizes service costs. The IGC can also maximize heating efficiency by controlling evaporator fan on and off delays. Efficient, Dependable Operation Tubular, dimpled gas heat exchangers optimize heat transfer for improved efficiency. The tubular design permits hot gases to make multiple passes across the path of the supply air. The dimpled design creates a turbulent gas flow to maximize heating efficiency. The extra thick Alumagardt heat exchanger coating provides corrosion resistance and ensures long life. An optional stainless steel heat exchanger is also available. The induced draft combustion system eliminates the unsightly appearance of flue stacks and diminishes the effects of wind on heating operations. The inducer fan draws hot combustion gas through the heat exchanger at the optimum rate for the most effective heat transfer. Induced draft heating systems are safer than positive pressure, forced draft heating systems. With the induced draft heating system, the heat exchanger operates under negative pressure, preventing flue gas leakage into the indoor supply air. During the eating mode, the evaporator -fan relay automatically starts the evaporator fan after the heat exchanger warms up to a suitable temperature. The 30 -second fan delay prevents cold air from entering the supply duct system when the conditioned space is calling for heat to maximize efficiency. 4

The direct -spark ignition system saves operating expense when compared to pilot ignition systems. No crossover tube is required, therefore no sooting or pilot fouling problems can occur. Safety is built in All units have a flame rectification sensor to quickly sense the burner flame. Fast shutdown is a certainty since the sensor reacts quickly to any flame outage or system failure. In the event of a shutdown, an error code is issued at the IGC board. eating safety controls will shut down the unit if there is a problem. If excessive temperatures develop, limit switches shut off the gas valve. After 4 continuous short cycles of the high temperature limit switch, the IGC board locks out the gas heat cycle to prevent any further short cycles. This safety feature is provided exclusively on Carrier rooftop units. The rollout switch also de -energizes the gas valve in the event of a flame rollout. ComfortLinkt Control Option The ComfortLink control is your link to a world of simple and easy to use rooftop units that offer outstanding performance and value. When used with a space temperature sensor, the ComfortLink controls intelligence maintains control over the economizer and condenser fans and optimizes the performance of the refrigeration circuits as conditions change resulting in the following features: S better control of temperature and humidity S superior reliability S automatic redundancy S low ambient cooling operation to 0_F S more accurate diagnostics, at unit or remote The ComfortLink Scrolling Marquee is very easy to use. The messages are displayed in easy to understand English, no decoding is required. A scrolling readout provides detailed explanations of control information. Only four, large, easy -to -use buttons are required to maneuver through the entire menu. The readout is designed to be visible even in the brightest sunlight. A handheld Navigatort accessory or System Pilott device can be used for added service flexibility. The ComfortLink control provides unparalleled service diagnostic information. Temperature and pressure can be read directly from the display with no need for separate gauges. Other data, such as compressor cycles, unit run time hours, current alarms, can also be accessed. A history of alarms is also available for viewing. The service run test can be very helpful when troubleshooting. The user can run test major components to determine the root cause of a problem. The unit can be run -tested before an installation is complete to ensure satisfactory start -up. To ensure reliability, the ComfortLink control prevents reverse compressor rotation. No laptop computers are required for start-up. Time schedules are built in and the Scrolling Marquee display provides easy access to set points. The ComfortLink control accepts input from a CO 2 sensor and a smoke detector. Both are available as factory -installed options or as field -installed accessories. ComfortLink controls are fully communicating and are cable -ready for connection to the Carrier Comfort Networkr (CCN) communication network. The control communicates at 38.4 kilobaud. This provides highspeed communications for remote monitoring via the Internet. Multiple Centurion rooftop units can be daisychained together using a 3 -wire communication bus at the rooftop level. The ComfortLink/CCN system is a peer -to -peer system, rather than a polling system. This results in lower cost installations. The Centurion rooftop units have a terminal strip on board, therefore, the Centurion units can operate with a standard thermostat. Expensive interface devices are not required. 3Vt Control System The Centurion rooftop unit is linkage compatible for use with the 3V zoning system. Carrier s 3V control system provides optimized equipment control through airside linkage. Linkage allows the Centurion rooftop unit to adjust its supply air temperature set points and occupancy schedules to run in the most efficient manner. The 3V zoning system maintains precise temperature control in the space by regulating the flow of conditioned air into the space using Carrier s VVTR Zone and Bypass Controllers. 5

MODEL NUMBER NOMENCLATURE D C 06 A A A 6 --- --- BB Product Series Type --- Single Packaged CV Rooftop Unit with PURONR Refrigerant, Novation Condenser Coil and Gas eat eat Options D --- Low eat Standard eat Exchanger E --- Medium eat Standard eat Exchanger F --- igh eat Standard eat Exchanger L --- Low eat Stainless Steel eat Exchanger M --- Medium eat Stainless Steel eat Exchanger N --- igh eat Stainless Steel eat Exchanger Base Unit Controls M --- Electro---Mechanical C --- ComfortLinkt Nominal Cooling Capacity --- Tons 20 --- 17.5 Ton 24 --- 20 Ton 28 --- 25 Ton Control Options{{ ComfortLink Only Options --- --- None A --- CO 2 Sensor B --- Return Air Smoke Detector C --- CO 2 Sensor, Return Air Smoke Detector D --- Fan and Filter Switches E --- CO 2 Sensor, Fan and Filter Switches F --- CO 2 Sensor, Return Air Smoke Detector, Fan and Filter Switches G --- Return Air Smoke Detector, Fan and Filter Switches --- Return and Supply Air Smoke Detectors J --- CO 2 Sensor, Return and Supply Air Smoke Detectors K --- CO 2 Sensor, Fan and Filter Switches, Return Air and Supply Air Smoke Detectors L --- Fan and Filter Switches, Return and Supply Air Smoke Detectors Electro---Mechanical Only Options --- --- None B --- Return Air Smoke Detector B --- Return and Supply Air Smoke Detectors **Seepage14forfactory---installedoptions } See page 14 for additional indoor fan motor/phase loss options {{ See page 14 for additional control options Voltage --- Phase --- z 1 --- 575 --- 3 --- 60 3 --- 208/230---1---60 5 --- 208/230---3---60 6 --- 460 --- 3 --- 60 FIOP Codes** EnergyXt --- --- Standard, No EnergyX E --- Low CFM EnergyX --- Low CFM EnergyX with Motor Status Switch L --- Low CFM EnergyX with Frost Protection P --- Low CFM EnergyX with Frost Protection and Motor Status Switch Factory Design Revision Coil Options --- --- Standard Coils, no umidimizer J --- Standard Coils, with umidimizer See Carrier representative for coil coating options Indoor---Fan Options} A --- Low Range Motor/Drive with Vertical Supply and Return Air Configuration B --- Mid ---Low Range Motor/Drive with Vertical Supply and Return Air Configuration C --- Mid ---igh Range Motor/Drive with Vertical Supply and Return Air Configuration D --- igh Range Motor/Drive with Vertical Supply and Return Air Configuration J --- Low Range Motor/Drive with Vertical Supply and Return Air Configuration and Phase Loss K --- Mid ---Low Range Motor/Drive with Vertical Supply and Return Air Configuration and Phase Loss L --- Mid ---igh Range Motor/Drive with Vertical Supply and Return Air Configuration and Phase Loss M --- igh Range Motor/Drive with Vertical Supply and Return Air Configuration and Phase Loss E --- Low Range Motor/Drive with orizontal Supply and Return Air Configuration F --- Mid ---Low Range Motor/Drive with orizontal Supply and Return Air Configuration G --- Mid ---igh Range Motor/Drive with orizontal Supply and Return Air Configuration --- igh Range Motor/Drive with orizontal Supply and Return Air Configuration N --- Low Range Motor/Drive with orizontal Supply and Return Air Configuration and Phase Loss P --- Mid ---Low Range Motor/Drive with orizontal Supply and Return Air Configuration and Phase Loss Q --- Mid ---igh Range Motor/Drive with Vertical Supply and Return Air Configuration and Phase Loss R --- igh Range Motor/Drive with Vertical Supply and Return Air Configuration and Phase Loss Quality Assurance Certified to ISO 9001:2000 This product has been designed and manufactured to meet Energy Star criteria for energy efficiency. owever, proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency. Installation of this product should follow all manufacturer s refrigerant charging and air flow instructions. Failure to confirm proper charge and air flow may reduce energy efficiency and shorten equipment life. Well exceeds ASRAE 90.1 and Energy Star Standards 6

ARI* CAPACITY RATINGS UNIT NOMINAL NET COOLING TOTAL SOUND EER[ CAPACITY (Tons) CAPACITY (Btuh) POWER (kw) RATING (db) IPLV** 20 18 202,000 17.6 11.6 81.7 12.4 24 20 242,000 21.0 11.5 84.9 12.1 28{ 25 292,000 26.5 11.0 84.9 11.7 LEGEND ASRAE --- American Society of eating, Refrigeration and Air Conditioning Engineers db --- Decibel EER --- Energy Efficiency Ratio IPLV --- Integrated Part --- Load Values *Air Conditioning and Refrigeration Institute. **IPLV values are calculated based on control configuration T.CTL = 2 (2 Stage Y1). {Size28unitisnotlistedwithARI,butistestedtoARIStandards. NOTES: 1. Tested in accordance with ARI Standards 360---95 (18---28 sizes). 2. Ratings are net values, reflecting the effects of circulating fan heat. 3. Ratings are based on: Cooling Standard: 80_F db, 67_F wb indoor entering---air temperature and 95 F db air entering outdoor unit. IPLV Standard: 80_F db, 67_F wb indoor entering---air temperature and 80_F db outdoor entering---air temperature. 4. All units are in compliance with ENERGY STARR and ASRAE 90.1 2004 Energy Standard for minimum EER requirements. 5. Units are rated in accordance with ARI sound standards 270 or 370. 7

eating Capacities and Efficiencies - 20-28 Vertical and orizontal Supply Units with Natural Gas Standard D20 E20 F20 D24 E24 F24 D28 E28 F28 UNIT Stainless Steel L20 M20 N20 L24 M24 N24 L28 M28 N28 EATING INPUT Stage 2 (Btuh) 250,000 365,000 400,000 250,000 365,000 400,000 250,000 365,000 400,000 EATING INPUT Stage 1 (Btuh) 199,000 281,000 317,000 199,000 281,000 317,000 199,000 281,000 317,000 LEGEND AFUE -- Annual Fuel Utilization Efficiency ASRAE --- American Society of heating, Refrigeration and Air Conditioning Engineers LP --- Liquid Propane * Minimum eating cfm must be maintained to ensure proper heating operation. OUTPUT CAPACITY Stage 2 (Btuh) 205,000 296,000 328,000 205,000 296,000 328,000 205,000 296,000 328,000 TEMPERATURE RISE Min --- Max (F) 15 --- 45 25 --- 55 25 --- 55 15 --- 45 25 --- 55 25 --- 55 15 --- 45 25 --- 55 25 --- 55 eating Capacities and Efficiencies - 20-28 (Cont) MINIMUM EATING CFM* 4,218 4,977 5,522 4,218 4,977 5,522 4,218 4,977 5,522 TERMAL EFFICIENCY (%) 82.0 81.0 82.0 82.0 81.0 82.0 82.0 81.0 82.0 NOTES: 1. Minimum allowable temperature of mixed air entering the heat exchanger during first stage heating is 45_F. Both stages of heat must be energized when the temperature of the mixed air entering the heat exchanger is below 45_F for standard heat exchangers or 35_F for optional stainless steel heat exchangers. 2. Propane operation requires field---installed accessory kit. 3. All data is applicable to 2000 ft of altitude. Vertical Supply Units With Propane Gas (Three Phase) UNIT Standard Stainless Steel D20 L20 E20 M20 F20 N20 D24 L24 E24 M24 F24 N24 D28 L28 E28 M28 F28 N28 EATING INPUT Stage 2 (Btuh) 250,000 365,000 400,000 250,000 365,000 400,000 250,000 365,000 400,000 EATING INPUT Stage 1 (Btuh) 207,000 291,000 331,000 207,000 291,000 331,000 207,000 291,000 331,000 OUTPUT CAPACITY Stage 2 (Btuh) 205,000 296,000 328,000 205,000 296,000 328,000 205,000 296,000 328,000 TEMPERATURE RISE Min --- Max (F) 15 --- 45 25 --- 55 25 --- 55 15 --- 45 25 --- 55 25 --- 55 15 --- 45 25 --- 55 25 --- 55 MINIMUM EATING CFM* 4,218 4,480 5,522 4,218 4,480 5,522 4,218 4,480 5,522 TERMAL EFFICIENCY (%) 82.0 81.0 82.0 82.0 81.0 82.0 82.0 81.0 82.0 orizontal Supply Units With Propane Gas (Three Phase) UNIT Standard Stainless Steel D20 L20 E20 M20 F20 N20 D24 L24 E24 M24 F24 N24 D28 L28 E28 M28 F28 N28 EATING INPUT Stage 2 (Btuh) 225,000 329,000 350,000 225,000 329,000 350,000 225,000 329,000 350,000 EATING INPUT Stage 1 (Btuh) 207,000 291,000 331,000 207,000 291,000 331,000 207,000 291,000 331,000 LEGEND AFUE -- Annual Fuel Utilization Efficiency ASRAE --- American Society of heating, Refrigeration and Air Conditioning Engineers LP --- Liquid Propane * Minimum eating cfm must be maintained to ensure proper heating operation. OUTPUT CAPACITY Stage 2 (Btuh) 185,000 266,000 292,000 185,000 266,000 292,000 185,000 266,000 292,000 TEMPERATURE RISE Min --- Max (F) 15 --- 45 25 --- 55 25 --- 55 15 --- 45 25 --- 55 25 --- 55 15 --- 45 25 --- 55 25 --- 55 MINIMUM EATING CFM* 3,807 4,480 4,916 3,807 4,480 4,916 3,807 4,480 4,916 TERMAL EFFICIENCY (%) 82.0 81.0 82.0 82.0 81.0 82.0 82.0 81.0 82.0 NOTES: 1. Minimum allowable temperature of mixed air entering the heat exchanger during first stage heating is 45_F. Both stages of heat must be energized when the temperature of the mixed air entering the heat exchanger is below 45_F for standard heat exchangers or 35_F for optional stainless steel heat exchangers. 2. Propane operation requires field---installed accessory kit. 3. All data is applicable to 2000 ft of altitude. 8

OPERATION AIR QUANTITY LIMITS 20-28 Units Maximum Cfm COOLING 20 5000 9,000 24 5500 10,000 28 6500 12,000 GAS EAT EATING (NAT. GAS, VERTICAL) EATING (NAT. GAS, ORIZONTAL) EATING (PROPANE, VERTICAL) EATING (PROPANE, ORIZONTAL) Minimum Cfm Minimum Cfm Minimum Cfm Minimum Cfm Minimum Cfm *7000 cfm minimum recommended above 1.0 in. wg external static pressure. igh eat (8 Cell) 5522 5522 5522 4920 Medium eat (8 Cell) 4977 4977 4480 4480 Low eat (5 Cell) 4218 4218 4218 3796 igh eat (8 Cell) 5522 5522 5522 4920 Medium eat (8 Cell) 4977 4977 4480 4480 Low eat (5 Cell) 4218 4218 4218 3796 igh eat (8 Cell) 5522 5470* 5522 4920* Medium eat (8 Cell) 4977 4977* 4480 4480* Low eat (5 Cell) 4218 4218 4218 3796 UNIT STANDARD RATING (dba) A -WEIGTED SOUND POWER LEVEL (dba) TYPICAL OCTAVE BAND SPECTRUM LEVELS (dba without tone adjustment) 63 125 250 500 1000 2000 4000 8000 20 81.7 90.2 84.8 80.7 79.0 77.6 71.4 66.7 60.7 24 84.9 90.0 86.3 83.6 82.9 80.3 74.9 71.4 66.5 28 84.9 90.0 86.3 83.6 82.9 80.3 74.9 71.4 66.5 LEGEND dba --- Decibel NOTE: Tested in accordance with ARI Standard 370---2001. UNIT STANDARD RATING (dba) A -WEIGTED SOUND POWER LEVEL (dba) WIT EnergyX TYPICAL OCTAVE BAND SPECTRUM LEVELS (dba without tone adjustment) 63 125 250 500 1000 2000 4000 8000 20 91.2 93.1 92.7 87.4 85.8 85.2 84.2 83.3 78.3 24 91.7 93.0 93.0 88.2 86.9 85.8 84.5 83.5 78.5 28 91.7 93.0 93.0 88.2 86.9 85.8 84.5 83.5 78.5 LEGEND dba --- Decibel NOTE: Tested in accordance with ARI Standard 370---2001. 9

PYSICAL DATA Physical Data - 20-28 UNIT 20 24 28 NOMINAL CAPACITY (TONS) 18 20 25 VOLTAGE (volts) 208/230 / 460 / 575 208/230 / 460 / 575 208/230 / 460 / 575 OPERATING WEIGT (lbs) Unit* 2329 2344 2494 umidi -MiZer System 80 80 100 Economizer 170 170 195 Roof Curb 14 -in 24 -in 305 385 305 385 270 345 REFRIGERANT SYSTEM Refrigerant Metering Device Puronr (410A) Balanced -Port TXV with Bypass # Circuits # Comp. 2 2 2 2 2 2 STD Unit Charge A B (lbs) 13.7 12.0 15.0 15.0 16.7 16.7 umidi -MiZer Unit Charge A B (lbs) 22.6 20.9 22.6 22.6 27.1 27.1 COMPRESSOR Scroll OilType Copeland 3MA Oil A B C (oz) 110 60 110 110 110 110 IG- PRESSURE SWITC (psig) Cutout Reset (Auto.) 630+/ -10 505+/ -20 630+/ -10 505+/ -20 630+/ -10 505+/ -20 CONDENSER COIL Microchannel Circuit A B Outer Inner Outer Inner Outer Inner Rows Fins/in. 1 20 1 20 1 20 Face Area (sq ft) 52.6 57 65.5 CONDENSER FAN (type) Propeller Quantity Diameter (in.) 4 22 6 22 6 22 Nominal CFM (Total, all fans) 14400 21000 21000 Motor p... Watts 0.25 1400 0.25 2100 0.25 2100 Nominal RPM 1100 1100 1100 EVAPORATOR COIL Round Tube Plate Fin Circuit A B Bottom...Top Bottom...Top Bottom...Top Rows Fins/in. 4..15 4..15 4..15 Face Area (sq ft) 23.1 23.1 28.9 Condensate drain conn. Size (in.) 3/4 NPT 3/4 NPT 3/4 NPT umidi- MiZer COIL Round Tube Plate Fin Circuit A B Bottom...Top Bottom...Top Bottom...Top Rows Fins/in. 2 15 2 15 2 15 Face Area (sq ft) 12.4 12.4 17.1 EVAPORATOR FAN (see motor & drive tables for more) Fan Quantity Size (in.) 2 15x11 2 15x11 2 15x11 Type Drive Belt Belt Belt Nominal CFM 7200 8000 10000 FanBearingType Ball - Concentric Lock Maximum Fan RPM 1400 1400 1400 Blower Shaft Diameter (in.) 1.1875 1.1875 1.1875 Blower Pulley Type Fixed Fixed Fixed FILTERS RA Filter #... size (in) 9 16x25 9 16x25 9 20x25 Economizer OA inlet screen #... size (in) 3 20x25 3 20x25 3 20x25 GAS EAT SECTION Manifold Pressure (in. wg.) NaturalGas Vertical orizontal 3.00 2.95 3.00 2.95 3.00 2.95 Liquid Propane Vertical orizontal 3.00 2.8 3.00 2.8 3.00 2.8 Thermostat eat Anticipator Setting (amps) First Stage Second Stage 0.98 0.44 0.98 0.44 0.98 0.44 Field Gas Connection Size (in.) 3/4 3/4 3/4 Gas Supply Pressure Range (in. wg.) 5.5-13.0 5.5-13.0 5.5-13.0 Gas Supply Pressure Range (PSIG) 0.235-0.469 0.235-0.469 0.235-0.469 # of burners (total) 5 5 5 Rollout switch opens... closes (deg F) 225 175 225 175 225 175 Temperature Rise Min - Max (deg F) 15-45 15-45 15-45 Natural Gas Input (Btuh) Stage1...Stage 2 199,000 250,000 199,000 250,000 199,000 250,000 Burner Orifice Diameter (in....drill size)** 0.136 29 0.136 29 0.136 29 Liquid Propane Input*** (Btuh) Stage1...Stage 2 207,000 250,000 207,000 250,000 207,000 250,000 Burner Orifice Diameter (in....drill size)** 0.110 35 0.110 35 0.110 35 LOW EAT MEDIUM EAT IG EAT # of burners (total) 8 8 8 Rollout switch opens... closes (deg F) 225 175 225 175 225 175 Temperature Rise Min - Max (deg F) 25-55 25-55 25-55 Natural Gas Input (Btuh) Stage1...Stage 2 281,000 365,000 281,000 365,000 281,000 365,000 Burner Orifice Diameter (in....drill size)** 0.1285 30 0.1285 30 0.1285 30 Liquid Propane Input*** (Btuh) Stage1...Stage 2 291,000 365,000 291,000 365,000 291,000 365,000 Burner Orifice Diameter (in....drill size)** 0.1015 38 0.1015 38 0.1015 38 # of burners (total) 8 8 8 Rollout switch opens... closes (deg F) 225 175 225 175 225 175 Temperature Rise Min - Max (deg F) 25-55 25-55 25-55 Natural Gas Input (Btuh) Stage1...Stage 2 317,000 400,000 317,000 400,000 317,000 400,000 Burner Orifice Diameter (in....drill size)** 0.136 29 0.136 29 0.136 29 Liquid Propane Input*** (Btuh) Stage1...Stage 2 331,000 400,000 331,000 400,000 331,000 400,000 Burner Orifice Diameter (in....drill size)** 0.110 35 0.110 35 0.110 35 * Aluminum evaporator coil/aluminum condenser coil with low heat ** For applications less than 2000 ft elevation *** Vertical application numbers shown. 10

20-28 EnergyX for Use with Vertical Return Air Only BASE UNIT EnergyX 20---24 28 Low CFM Low CFM with Low CFM with Low CFM Bypass** Bypass** NOMINAL CAPACITY (CFM) 2.600 3,000 OUTSIDE AIR CAPACITY (CFM) 2,000---3,500 2,000---3,500 EXAUST AIR CAPACITY RANGE (CFM) 2,000---3,500 2,000---6,800 2,000---3,500 2,000---6,800 MAXIMUM SIPPING WEIGT (lb) 1033 1048 1053 1068 MAXIMUM OPERATING WEIGT (lb) 1033 1048 1053 1068 ERV DIMENSIONS (added to hvac) (in.) Width (in.) 86.7 86.7 86.7 86.7 Depth (in.) 56.8 56.8 56.8 56.8 eight (in.) 56.3 56.3 56.3 56.3 ROTARY ENERGY EXCANGER Type Enthalpy Lightweight Polymer with Silica Gel Desiccant Coating Size (Dia. x Depth) (in.) 39.8 x 3 39.8 x 3 39.8 x 3 39.8 x 3 Nominal Drive Motor (hp) 1/6 1/6 1/6 1/6 SUPPLY AIR FAN Qty...Type 1 1 1 1 Drive Type Adjustable Belt Drive Fan Isolation Neoprene Rubber Pads Specify for use in Vertical Applications Only 12 x 12 12 x 12 12 x 12 12 x 12 Nominal Motor (hp) 2 2 2 2 ERV EXAUST AIR FAN Qty...Type 1 1 1 1 Drive Type Adjustable Belt Drive Fan Isolation Neoprene Rubber Pads Wheel Dimensions (Dia. x Depth) 10 x 10 10 x 10 10 x 10 10 x 10 Nominal Motor (hp) 3 3 3 3 ECONOMIZER EXAUST AIR FAN (Used only with ERVs with bypass) Qty...Type 1 1 1 1 Drive Type Adjustable Belt Drive Fan Isolation Neoprene Rubber Pads Wheel Dimensions (Dia. x Depth) NA 10 x 10 NA 10 x 10 Nominal Motor (hp) NA 3 NA 3 FILTERS Type 2 ---in. Pleated --- 30% Efficiency Exhaust air (optional)*...qty...size (in.) (2) 20 x 25 x 2 (2) 20 x 25 x 2 (2) 20 x 25 x 2 (2) 20 x 25 x 2 Outside air.size...qty Size (in.) (2) 20 x 25 x 2 (2) 20 x 25 x 2 (2) 20 x 25 x 2 (2) 20 x 25 x 2 * Exhaust air filter comes with the optional filter maintenance switch. ** Bypass models include modulating economizer, 100% bypass damper, and additional exhaust blower. Effectiveness 20-28 EnergyX Size CFM range CFM(O/A) EFFECTIVENESS (%) Sensible Latent TClg Ttg 2000 74.9 68.9 71.3 72.7 20---24 Low CFM 2600 67.6 59.7 62.9 64.8 3500 59.4 49.2 53.3 55.8 2000 68.6 60.9 63.9 65.8 28 Low CFM 3000 64 55.1 58.6 60.8 3500 59.4 49.2 53.3 55.8 LEGEND O/A --- Outside Air T Clg --- Total Cooling Capacity T tg --- Total eating Capacity 11

PYSICAL DATA (CONT) Fan Motor and Drive Data - Vertical Supply/Return - 20-28 UNIT 20 24 28 Voltage (volts) 208/230 and 460 575 208/230 and 460 575 208/230 and 460 575 LOW RANGE Motor P 3.7 5 3.7 5 5 5 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 4.26 5.75 4.26 5.75 5.37 / 5.75 5.75 Maximum Continuous Watts 3700 5015 3700 5015 4578 / 5115 5015 Motor Frame Size 56Z S184T 56Z S184T S184T S184T Motor shaft diameter (in.) 7/8 11/8 7/8 11/8 11/8 11/8 Motor Pulley Pitch Diameter Min - Max (in) 2.7-3.7 3.7-4.7 2.7-3.7 3.7-4.7 3.7-4.7 3.7-4.7 Fan RPM Range 685-939 751-954 685-939 751-954 687-873 687-873 Blower Pulley Pitch Diameter (in.) 6.8 8.6 6.8 8.6 9.4 9.4 Pulley center line distance (in.) 11.293-13.544 9.81-13.055 11.293-13.544 9.81-13.055 9.81-13.055 9.81-13.055 Belt, Quantity..Type..Length (in.) 1..BX38..39.8 1..BX40..41.8 1..BX38..39.8 1..BX40..41.8 1..BX41..42.8 1..BX41..42.8 Speed change per turn - moveable pulley (RPM) 42 34 42 34 31 31 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 812 853 812 853 780 780 MID- LOW RANGE Motor P 5 5 5 5 5 5 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 5.37 / 5.75 5.75 5.37 / 5.75 5.75 5.37 / 5.75 5.75 Maximum Continuous Watts 4578 / 5115 5015 4578 / 5115 5015 4578 / 5115 5015 Motor Frame Size S184T S184T S184T S184T S184T S184T Motor shaft diameter (in.) 11/8 11/8 11/8 11/8 11/8 11/8 Motor Pulley Pitch Diameter Min - Max (in) 3.7-4.7 3.7-4.7 3.7-4.7 3.7-4.7 4.8-6 4.8-6 Fan RPM Range 949-1206 949-1206 949-1206 949-1206 805-1007 805-1007 Blower Pulley Pitch Diameter (in.) 6.8 6.8 6.8 6.8 10.4 10.4 Pulley center line distance (in.) 9.81-13.055 9.81-13.055 9.81-13.055 9.81-13.055 9.81-13.055 9.81-13.055 Belt, Quantity..Type..Length (in.) 1..BX38..39.8 1..BX38..39.8 1..BX38..39.8 1..BX38..39.8 1..BX45..46.8 1..BX45..46.8 Speed change per turn - moveable pulley (RPM) 43 43 43 43 34 34 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 1078 1078 1078 1078 906 906 MID- IG RANGE Motor P 7.5 7.5 7.5 7.5 7.5 7.5 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 7.66/8.51 / 8.63 8.63 7.66/8.51 / 8.63 8.63 7.66/8.51 / 8.63 8.63 Maximum Continuous Watts 6458 / 7586 7586 6458 / 7586 7586 6458 / 7586 7586 Motor Frame Size S213T S213T S213T S213T S213T S213T Motor shaft diameter (in.) 13/8 13/8 13/8 13/8 13/8 13/8 Motor Pulley Pitch Diameter Min - Max (in) 4.8-6.0 4.8-6.0 4.8-6.0 4.8-6.0 4.8-6.0 4.8-6.0 Fan RPM Range 941-1176 941-1176 941-1176 941-1176 941-1176 941-1176 Blower Pulley Pitch Diameter (in.) 8.9 8.9 8.9 8.9 8.9 8.9 Pulley center line distance (in.) 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 Belt, Quantity..Type..Length (in.) 1..BX42..43.8 1..BX42..43.8 1..BX42..43.8 1..BX42..43.8 1..BX42..43.8 1..BX42..43.8 Speed change per turn - moveable pulley (RPM) 39 39 39 39 39 39 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 1059 1059 1059 1059 1059 1059 IG RANGE Motor P 10 10 10 10 10 10 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 9.94/10.45 / 11.19 11.5 9.94/10.45 / 11.19 11.5 9.94/10.45 / 11.19 11.5 Maximum Continuous Watts 8284 / 9330 9711 8284 / 9330 9711 8284 / 9330 9711 Motor Frame Size S215T S215T S215T S215T S215T S215T Motor shaft diameter (in.) 13/8 13/8 13/8 13/8 13/8 13/8 Motor Pulley Pitch Diameter Min - Max (in) 4.3-5.5 4.3-5.5 4.3-5.5 4.3-5.5 4.3-5.5 4.3-5.5 Fan RPM Range 1014-1297 1014-1297 1014-1297 1014-1297 1014-1297 1014-1297 Blower Pulley Pitch Diameter (in.) 7.4 7.4 7.4 7.4 7.4 7.4 Pulley center line distance (in.) 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 Belt, Quantity..Type..Length (in.) 2..BX38..39.8 2..BX38..39.8 2..BX38..39.8 2..BX38..39.8 2..BX38..39.8 2..BX38..39.8 Speed change per turn - moveable pulley (RPM) 47 47 47 47 47 47 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 1156 1156 1156 1156 1156 1156 12

PYSICAL DATA (CONT) Fan Motor and Drive Data - orizontal Supply/Return - 20-28 UNIT 20 24 28 Voltage (volts) 208/230 and 460 575 208/230 and 460 575 208/230 and 460 575 LOW RANGE Motor P N/A N/A N/A N/A 5 5 Motor Nominal RPM N/A N/A N/A N/A 1750 1750 Maximum Continuous BP N/A N/A N/A N/A 5.37 / 5.75 5.75 Maximum Continuous Watts N/A N/A N/A N/A 4578 / 5115 5015 Motor Frame Size N/A N/A N/A N/A S184T S184T Motor shaft diameter (in.) N/A N/A N/A N/A 11/8 11/8 Motor Pulley Pitch Diameter Min - Max (in) N/A N/A N/A N/A 3.7-4.7 3.7-4.7 Fan RPM Range N/A N/A N/A N/A 687-873 687-873 Blower Pulley Pitch Diameter (in.) N/A N/A N/A N/A 9.4 9.4 Pulley center line distance (in.) N/A N/A N/A N/A 9.81-13.055 9.81-13.055 Belt, Quantity..Type..Length (in.) N/A N/A N/A N/A 1..BX41..42.8 1..BX41..42.8 Speed change per turn - moveable pulley (RPM) N/A N/A N/A N/A 31 31 Moveable pulley maximum full turns N/A N/A N/A N/A 6 6 Factory Speed setting (RPM) N/A N/A N/A N/A 780 780 MID- LOW RANGE Motor P 3.7 5 3.7 5 5 5 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 4.26 5.75 4.26 5.75 5.37 / 5.75 5.75 Maximum Continuous Watts 3700 5015 3700 5015 4578 / 5115 5015 Motor Frame Size 56Z S184T 56Z S184T S184T S184T Motor shaft diameter (in.) 7/8 11/8 7/8 11/8 11/8 11/8 Motor Pulley Pitch Diameter Min - Max (in) 2.7-3.7 3.7-4.7 2.7-3.7 3.7-4.7 4.8-6.0 4.8-6.0 Fan RPM Range 896-1227 873-1108 896-1227 873-1108 805-1007 805-1007 Blower Pulley Pitch Diameter (in.) 5.2 7.4 5.2 7.4 10.4 10.4 Pulley center line distance (in.) 11.293-13.544 9.81-13.055 11.293-13.544 9.81-13.055 9.81-13.055 9.81-13.055 Belt, Quantity..Type..Length (in.) 1..BX35..36.8 1..BX38..39.8 1..BX35..36.8 1..BX38..39.8 1..BX45..46.8 1..BX45..46.8 Speed change per turn - moveable pulley (RPM) 55 39 55 39 34 34 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 1062 991 1062 991 906 906 MID- IG RANGE Motor P 5 5 5 5 7.5 7.5 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 5.37 / 5.75 5.75 5.37 / 5.75 5.75 7.66/8.51 / 8.63 8.63 Maximum Continuous Watts 4578 / 5115 5015 4578 / 5115 5015 6458 / 7586 7586 Motor Frame Size S184T S184T S184T S184T S213T S213T Motor shaft diameter (in.) 11/8 11/8 11/8 11/8 13/8 13/8 Motor Pulley Pitch Diameter Min - Max (in) 3.7-4.7 3.7-4.7 3.7-4.7 3.7-4.7 4.8-6.0 4.8-6.0 Fan RPM Range 1113-1414 1113-1414 1113-1414 1113-1414 941-1176 941-1176 Blower Pulley Pitch Diameter (in.) 5.8 5.8 5.8 5.8 8.9 8.9 Pulley center line distance (in.) 9.81-13.055 9.81-13.055 9.81-13.055 9.81-13.055 9.025-12.179 9.025-12.179 Belt, Quantity..Type..Length (in.) 1..BX35..36.8 1..BX35..36.8 1..BX35..36.8 1..BX35..36.8 1..BX42..43.8 1..BX42..43.8 Speed change per turn - moveable pulley (RPM) 50 50 50 50 39 39 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 1264 1264 1264 1264 1059 1059 IG RANGE Motor P 7.5 7.5 7.5 7.5 10 10 Motor Nominal RPM 1750 1750 1750 1750 1750 1750 Maximum Continuous BP 7.66/8.51 / 8.63 8.63 7.66/8.51 / 8.63 8.63 9.94/10.45 / 11.19 11.5 Maximum Continuous Watts 6458 / 7586 7586 6458 / 7586 7586 8284 / 9330 9711 Motor Frame Size S213T S213T S213T S213T S215T S215T Motor shaft diameter (in.) 13/8 13/8 13/8 13/8 13/8 13/8 Motor Pulley Pitch Diameter Min - Max (in) 5.4-6.6 5.4-6.6 5.4-6.6 5.4-6.6 4.3-5.5 4.3-5.5 Fan RPM Range 1096-1339 1096-1339 1096-1339 1096-1339 1014-1297 1011-1293 Blower Pulley Pitch Diameter (in.) 8.6 8.6 8.6 8.6 7.4 7.4 Pulley center line distance (in.) 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179 Belt, Quantity..Type..Length (in.) 1..BX42..43.8 1..BX42..43.8 1..BX42..43.8 1..BX42..43.8 1..BX38..39.8 1..BX38..39.8 Speed change per turn - moveable pulley (RPM) 41 41 41 41 47 47 Moveable pulley maximum full turns 6 6 6 6 6 6 Factory Speed setting (RPM) 1218 1218 1218 1218 1156 1156 13

OPTIONS AND ACCESSORIES ITEM FACTORY---INSTALLED OPTIONS FIELD---INSTALLED ACCESSORIES Intelligent ComfortLink Controls X Electro---Mechanical Controls X umidi --- MiZer Adaptive Dehumidification System X Economizer With Single Enthalpy Sensor X X Differential Enthalpy Sensor X Economizer with Dry Bulb Sensor X Differential Dry Bulb Sensor X EnergyX (Energy Recovery Ventilator) X Line---Side Powered 115---volt GFI Convenience Outlet X Non --- Powered 115 --- volt GFI Convenience Outlet X ACR Breaker X Non---Fused Disconnect Switch X Manual Outdoor Air Damper X X Two---Position Motorized Outdoor Air Damper X X Barometric Relief Damper X X Power Exhaust X X CondenserCoilailGuardGrille X X MERV---8 Pleated Return Air Filters X 4---in. Filter Capabilities X CO2 Sensor X X Return Air Smoke Detector X X Return and Supply Air Smoke Detectors X X Fan and Plugged Filter Switches X X orizontal Duct Configuration (2) X X Low Range Fan Performance Motor/Drive X Mid---Low Fan Performance Motor/Drive X Mid---igh Fan Performance Motor/Drive X igh Fan Performance Motor/Drive X Phase Loss Protection X X Copper Fin/Copper Tube Coil X Stainless Steel eat Exchanger X 14---in. Full Perimeter Roof Curb X 24---in. Full Perimeter Roof Curb X Roof Curb Burglar Bars X Liquefied Propane (LP) Gas Conversion Kits X igh Altitude Gas Kits X Thermostats and Subbases X Electronic Programmable Thermostats X LEGEND GFI --- Ground Fault Interrupt ACR --- eating, Air Conditioning, and Refrigeration MERV --- Minimum Efficiency Reporting Value 14

Weight Adders OPTION/ACCESSORY WEIGTS (cont) OPTION/ACCESSORY 20 24 28 lb kg lb kg lb kg umidi --- MiZer Adaptive Dehumidification System 80 36 80 36 100 45 Barometric Relief Damper 50 23 50 23 50 23 Power Exhaust 125 57 125 57 125 57 Economizer 170 77 170 77 195 88 Cu Condenser Coils 202 92 290 132 290 132 Cu Condenser and Evaporator Coils 330 150 418 190 453 205 Low Gas eat NO ADDITIONAL WEIGT Medium Gas eat 5 2 10 2 10 2 igh Gas eat 28 13 28 13 28 13 Roof Curb (14 in.) 305 138 305 138 270 122 Roof Curb (24 in.) 385 175 385 175 345 156 Optional Indoor Motor/Drive 73 33 73 33 40 18 ail Guard 100 45 100 45 100 45 CO2Sensor 5 2 5 2 5 2 Return Smoke Detector 5 2 5 2 5 2 Supply Smoke Detector 5 2 5 2 5 2 Plugged Filter Indicator 2 1 2 1 2 1 Fan Status 2 1 2 1 2 1 Non---Fused Disconnect 15 7 15 7 15 7 ACR Breaker 20 9 20 9 20 9 Line---Side Powered Convenience Outlet 35 16 35 16 35 16 Non---Powered Convenience Outlet 20 9 20 9 20 9 Enthalpy Sensor 2 1 2 1 2 1 Differential Enthalpy Sensor 3 1 3 1 3 1 4---In. Filter Capability 10 5 10 5 15 7 Two---Position Motorized Damper 40 18 40 18 40 18 Manual Damper 25 11 25 11 25 11 NOTE: All weights do not include packaging. 15

Note 2 Note 1 1. View A-A only applies to units ordered with dedicated orizontal Supply and Return configuration. 2. View B-B optional side entry gas line is located on side wall of gas heat compartment, as shown. BASE UNIT DIMENSION - 20-28 C08470 16

50TG505392 Rev. 2.0 ACCESSORY DIMENSION - 20-28 C07327 17

PERFORMANCE DATA 20 (18 Tons) UNIT WIT UMIDI---MIZER SYSTEM OT GAS REEAT MODE ALL CIRCUITS AirEnteringEvaporator Ewb(F) Temp (F) 75 Dry Bulb 75 Dry Bulb 75 Dry Bulb Air Entering 62.5 Wet Bulb (50% R) 64 Wet Bulb (55% R) 65.3 Wet Bulb (60% R) Condenser (Edb) AirEnteringEvaporator Cfm 5400 6300 7200 8100 9000 5400 6300 7200 8100 9000 5400 6300 7200 8100 9000 TC 79 82 85 87 88 85 88 91 93 95 90 94 96 98 100 80 SC 17 23 28 32 35 8 14 19 23 26 0 6 11 15 19 kw 12.1 12.2 12.2 12.2 12.3 12.2 12.2 12.3 12.3 12.4 12.2 12.3 12.3 12.4 12.4 TC 82 85 87 89 91 88 91 93 96 97 93 96 99 101 103 75 SC 21 26 31 35 38 13 18 23 27 30 5 11 16 20 23 kw 11.8 11.9 11.9 11.9 12.0 11.9 11.9 12.0 12.0 12.1 11.9 12.0 12.1 12.1 12.1 TC 85 88 90 92 94 91 94 96 98 100 96 99 101 103 105 70 SC 25 30 34 38 41 17 22 27 30 33 11 16 20 24 27 kw 11.5 11.6 11.6 11.6 11.7 11.6 11.6 11.7 11.7 11.8 11.7 11.7 11.8 11.8 11.8 TC 92 94 96 98 99 97 99 101 103 104 102 104 106 108 109 60 SC 33 37 41 44 46 27 31 35 38 40 21 26 29 32 35 kw 10.9 11.0 11.0 11.0 11.1 11.0 11.1 11.1 11.1 11.2 11.1 11.1 11.2 11.2 11.2 TC 98 100 102 103 104 103 105 107 108 109 107 110 111 113 114 50 SC 41 44 47 50 52 36 40 43 45 47 32 35 38 41 43 kw 10.3 10.4 10.4 10.4 10.4 10.4 10.5 10.5 10.5 10.6 10.5 10.6 10.6 10.6 10.7 20 (18 Tons) UNIT WIT UMIDI---MIZER SYSTEM OT GAS REEAT MODE CIRCUIT A ONLY AirEnteringEvaporator Ewb(F) Temp (F) 75 Dry Bulb 75 Dry Bulb 75 Dry Bulb Air Entering 62.5 Wet Bulb (50% R) 64 Wet Bulb (55% R) 65.3 Wet Bulb (60% R) Condenser (Edb) AirEnteringEvaporator Cfm 5400 6300 7200 8100 9000 5400 6300 7200 8100 9000 5400 6300 7200 8100 9000 TC 48 51 54 56 59 49 53 56 58 60 51 54 57 60 62 50 SC 21 24 27 29 31 15 19 21 24 26 10 14 17 19 21 kw 5.4 5.4 5.5 5.5 5.5 5.4 5.5 5.5 5.5 5.5 5.4 5.5 5.5 5.5 5.5 TC 51 54 56 58 59 53 55 58 60 61 54 57 59 61 63 40 SC 23 25 28 30 31 18 21 23 25 27 14 17 20 22 23 kw 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.4 5.4 5.3 5.4 5.4 5.4 5.4 LEGEND Edb --- Entering Dry --- Bulb Ewb --- Entering Wet --- Bulb kw --- Compressor Motor Power Input Idb --- Leaving Dry --- Bulb Iwb --- Leaving Wet --- Bulb R --- Relative umidity SC --- Sensible eat Capacity (1000 Btuh) Gross TC --- Total Capacity (1000 Btuh) Gross NOTES: 1. Direct interpolation is permissible. Do not extrapolate. 2. The following formulas may be used: sensible capacity (Btuh) t ldb = t edb 1.10 x cfm t lwb = Wet---bulb temperature corresponding to enthalpy of air leaving evaporator coil (h lwb ) total capacity (Btuh) h lwb =h ewb 4.5 x cfm Where: h ewb = Enthalpy of air entering evaporator coil 18