Model 581B Sizes

Transcription

1 Bryant Air Conditioning COMMERCIAL SINGLE PACKAGE ROOFTOP GAS HEAT/ELECTRIC COOLING UNITS Model 581B Sizes to12 1 2Tons DESCRIPTION Unit 581B (Size 072 Shown) Unit 581B (Size 150 Shown) Specifically designed to effectively compete in the highefficiency market, the 581B gas heating/electric cooling units are ideal for most commercial ground level and rooftop applications. 581B units are available in a variety of heating sizes, ranges, and voltage options and are capable of meeting most job requirements. The 581B units encompass state-of-the-art technology through their innovative use of efficient scroll compressors, sophisticated gas heating, corrosion resistant design, electronic controls, and internally enhanced copper tubes. 581B units can reach SEERs (Seasonal Energy Efficiency Ratio) as high as 12.3, EERs (Energy Efficiency Ratios) as high as 10.3, and AFUE (Annual Fuel Utilization Efficiency) and Steady State Efficiencies as high as 82%. Isolated compressor rails, independent compressor mountings, and standard belt-driven evaporator fan motors ensure quiet operation for all 581B units. All 581B units are characterized by distinctive safety features and high reliability. The units are fully protected by numerous standard internal safety features including a low-pressure/lossof-charge switch, high-pressure switch, freeze-protection thermostat, internal compressor overload, as well as the Cycle- LOC circuit board that prevents compressor short cycling. The use of scroll compressors provides highly efficient cooling operation. ing efficiency is guaranteed through the use of superior heat exchangers and 2-stage, redundant gas valves on all units. Constructed of galvanized steel, bonderized and coated with a pre-painted, baked enamel finish, 581B unit cabinets are designed for a long life and attractive appearance. The paint finish is a non-chalking type that is capable of withstanding Federal test Method Standard No. 141 (Method 6061) 500-hour salt spray test. Non-corrosive condensate pans and primed interior panels extend unit life and preserve their attractive appearance. The 581B units were designed with the service person in mind. Standard size filters, no tool filter access, and permanentlylubricated fan motors simplify unit maintenance. The unit s compact size permits easy shipment, rigging, and installation. Built-in diagnostics on the integrated gas unit control board simplify troubleshooting. Designed to be easily convertible from vertical discharge to horizontal discharge, 581B units are readily adaptable to a diverse range of new construction and replacement applications. For vertical discharge jobs, ductwork can be connected directly to the roof curb, allowing ductwork to be completed before the unit is installed. All units include easily replaceable 2-in. internal filters. All 581B units are listed with UL (Underwriters Laboratories), ULC (Underwriters Laboratories Canada), ARI (Air-Conditioning & Refrigeration Institute), and the CEC (California Energy Commission). STANDARD FEATURES THE FACTORY-ASSEMBLED PACKAGE is a compact, fully self-contained combination gas heating/electric cooling unit that is prewired, prepiped, and precharged for minimum installation expense. INTEGRATED GAS UNIT CONTROL BOARD (IGC) increases the reliability, safety, and efficiency of the 581B gas heating rooftop units. The control board provides timed control of evaporator fan functioning and burner ignition. Built-in diagnostics simplify troubleshooting and provide system status and fault notification through a light-emitting diode (LED). The LED is visible without removing the unit control box access panel. The IGC also provides exclusive anti-cycle protection for gas heat operation. UNITS ARE EASILY CONVERTED from vertical to horizontal configuration. Fast and easy conversion enables the 581B to be used for a variety of applications and makes retrofit and add-on jobs easier. Changing the configuration can be accomplished simply by rearranging the 2 movable vertical and horizontal duct panels. HEAVY-GAGE ROLL-FORMED BASE RAIL features forklift slots and rigging holes for easier maneuvering and installation. A stretch-wrap packaging protects the unit during shipment and storage. Form No. PDS 581B.36.2B

2 INTERNAL RETURN-AIR FILTERS are provided. Two-in., throwaway filters are standard on all units and can be easily accessed through a removable (tool-less) filter access door located directly above the outdoor air intake hood. On all units, no tools are required and there is no need to field-fabricate filter racks or install external filter accessories. DURABLE, EFFICIENT SCROLL COMPRESSORS minimize service costs. Scroll compressors are standard on all units, are fully hermetic, and feature vibration isolators for extremely quiet operation. Compressors are mounted on independent base rails for additional sound integrity and structural support. The 581B s efficient condenser fan and motor design permits operation at a low sound power of 8.0 bels (sizes ), 8.6 bels (sizes ), or 8.8 bels (size 150). The Cycle-LOC system protects against compressor short cycling. TWO INDEPENDENT COMPRESSOR CIRCUITS (sizes ) provide pinpoint comfort control, higher operating efficiency, and additional back-up capability. NON-CORROSIVE, SLOPED, CONDENSATE DRAIN PAN is factory installed with drain connections located on the bottom and end of the unit for unobstructed run-off. The condensate drain pan conforms to ASHRAE (American Society of ing, Refrigeration and Air Conditioning Engineers) Standard 62 to meet most Indoor Air Quality (IAQ) specifications. SIMPLIFIED DUCTWORK CONNECTIONS use the logical 2 to 1 aspect ratio. On vertical discharge units, ductwork attaches directly to the roof curb. STANDARD THRU-THE-BOTTOM SERVICE CONNECTION capability allows power and control wiring to be easily routed through the bottom of rooftop. No additional holes in the roof are necessary. Accessory power connection package is required. To simplify installation, both power and control connections are made on the same side of the unit. ADAPTABLE CONTROL SYSTEM works with all conventional and programmable thermostats and can be easily integrated into monitor control systems. STATE-OF-THE-ART COILS feature internally enhanced copper tubing and are thoroughly leak tested with helium particles at the factory. Condenser coils have louvered, aluminum lanced fins, providing maximum heat transfer for optimum efficiency and easy cleaning. MULTI-PASS HEAT ECHANGERS improve efficiency by optimizing heat transfer. The tubular design permits hot gases to make multiple passes across the path of the supply air. In addition, dimpled heat exchanger tubes force the hot gases to stay in close contact with the cell walls to improve heat transfer. REFRIGERANT CIRCUITRY PROTECTED by standard lossof-charge/low-pressure switch, freeze-protection thermostat, high-pressure switch, filter drier, and Cycle-LOC device. An exclusive metering device precisely controls the refrigerant flow and prevents slugging and floodback. Optimum unit performance is obtained by metering the circuits individually. FACTORY-INSTALLED OPTIONS DESCRIPTION AND USAGE Integrated Varislide Economizer Package consists of a low-leakage sliding damper with control board. The economizer will allow a fixed percentage between zero and 100% outdoor ventilation air into the unit any time the evaporator fan is running. The damper will close whenever a power loss occurs. A dry-bulb thermostat placed outdoors will bring in 100% outdoor air whenever the temperature of the outdoor air alone can adequately provide cooling. If the economizer alone cannot provide enough cooling, then simultaneous economizer and compressor operation will provide the most economical operation. The economizer is also equipped with 15% barometric relief. Allows a fixed percentage of outdoor air anytime the evaporator fan is on, or operates in economizer mode if outdoor air can provide cooling, but closes when the evaporator fan is off to prevent cold backdrafts and wasted energy. To reduce energy usage. Use whenever the number of hours of operation at below 55 F are significant. The damper may be used on either vertical or horizontal applications. Integrated PARABLADE Economizer Package features interposing blade design, standard enthalpy control, 30% barometric relief capability ( ), 45% barometric relief capability ( ), and built-in spring return for close on power loss. Allows a fixed percentage of outdoor air anytime the evaporator fan is on, or operates in economizer mode if outdoor air can provide cooling, but closes when the evaporator fan is off to prevent cold backdrafts and wasted energy. To reduce energy usage. Use whenever the number of hours of operation at below 55 F are significant. The damper may be used only on vertical applications. For indoor air quality to control humidity levels using enthalpy control. Unit Mounted Disconnect Factory-installed, internally mounted NEC (National Electrical Code) and UL approved fused switch. The disconnect switch is externally accessible. Equipped with disconnect switch lockout capability. To provide unit power shutoff. Convenience Outlet Factory-installed, internally mounted and externally accessible 115-v female receptacle. Includes 15-amp GFI receptacle with independent fuse protection. Voltage required to operate convenience outlet is provided by factory-installed step down transformer. To provide 115-v power at unit site for maintenance or service tools. FIELD-INSTALLED ACCESSORY DESCRIPTION AND USAGE Roof Curb Full-perimeter galvanized steel support frame in 14- and 24-in. high designs provides wood nailer to attach roof counter flashing. Insulated basepans in curb are provided to prevent condensation. Ductwork attaches to rails provided in the roof curb. A gasket is provided to form an air- and water-tight seal between unit and curb. The gasket meets the standards of the NRCA (National Roofing Contractors Association). Rooftop application for vertical discharge. Slab-mounted applications when elevation of the unit is necessary. Utility Connection Package Connection plates for power and gas, which attach to the roof curb, allowing the power and gas to be routed through the roof curb. To minimize the number of roof penetrations. Condenser Coil Hail Guard Package consists of a hood and coil grille which attach to the condenser coil. To protect the condenser coil from hail and other debris. 2

3 Manual Outdoor-Air Damper Package consists of a sliding damper which can be set at any position between zero and 25% outdoor air. The package includes a rainhood and birdscreen. To allow a fixed percentage of outdoor air for ventilation under all conditions. The damper may be used on either vertical or horizontal airflow applications. 100% Two-Position Damper Package consists of a low-leak damper assembly. The damper will allow from zero to 100% outdoor air into the unit any time the evaporator fan is running. The damper will close whenever a power loss occurs. When the evaporator fan is off, the damper will be closed. The damper is also equipped with 15% barometric relief. Allows a fixed percentage of outdoor air any time the evaporator fan is on, but closes when the evaporator fan is off to prevent cold backdrafts and wasted energy. The damper may be used on either vertical or horizontal airflow applications. To effectively fulfill many Indoor Air Quality (IAQ) specifications. 25% Two-Position Damper Package consists of a low-leak damper assembly. The damper will allow from zero to 25% outdoor air into the unit any time the evaporator fan is running. The damper will close whenever a power loss occurs. When the evaporator fan is off, the damper will be closed. Allows a fixed percentage of outdoor air any time the evaporator fan is on, but closes when the evaporator fan is off to prevent cold backdrafts and wasted energy. The damper may be used on either vertical or horizontal airflow applications. Integrated Varislide Economizer See description listed under Factory-Installed Options Description and Usage section on page 2. LP (Liquid Propane) Kit Kit consists of gas orifices to convert the unit for use with LP gas. No gas valve modification is required. When natural gas cannot be obtained. Solid-State Enthalpy Control Package consists of a solidstate sensor which is capable of sensing outdoor-air heat content (temperature and humidity) and controlling Varislide economizer cut-in point to have minimum heat content air passing over the evaporator coil. The solid-state enthalpy control replaces the standard dry-bulb thermostat in the Varislide economizer. To enhance economizer operation for additional energy savings. Enthalpy control is standard on PARABLADE economizers. Differential Enthalpy Control Package consists of a solidstate sensor to be used in conjunction with the solid-state enthalpy control. This sensor is mounted on the economizer assembly so that it can sense building return-air temperature. The 2 sensors will determine which combination of outdoor and return air will provide the greatest energy savings. To enhance economizer operation for maximum energy savings. Time Guard II Device Package consists of a control to be field wired into the unit controls, and provides a 5-minute delay in compressor operation between cooling cycles. Prevents compressor short cycling when rapid compressor cycles may be a problem. Low NO x Kit Consists of baffles to be inserted in the heat exchanger tubes to reduce the level of nitric oxide emissions to 40 nanograms per joule. To meet local NO x emission standards. Flue Hood Protector Consists of a sheet metal shield to go over the gas flue exhaust. If additional protection from hot flue hood is required for example, if unit is slab mounted near a driveway. Thermostats and Subbases Provides staged cooling and heating, automatic (or manual) changeover, fan control, and indicator light. To control unit operations. Condenser Coil Grille The grille protects the condenser coil from damage and requires no additional clearance. When unit is located in high traffic areas or could be subject to damage. Condenser Coil Salt Spray Protection Package The grille protects the condenser coil from damage caused by salt spray. To protect units located in coastal areas. Flue Discharge Deflector The flue discharge deflector exhausts flue discharge up and away from the unit. To allow minimum flue side clearances to combustibles to be reduced to 18 inches. Electronic Programmable Thermostat The programmable thermostat has dual set points for heating/cooling and controls two-stage heating and cooling. Depending upon the model selected, the thermostat may include or be used in conjunction with an electronic time clock for energy saving programmable setback. To increase energy savings. To program building s occupied and unoccupied modes. Remote Status Panel The decorative, wall-mounted panel with separate two-stage heating/cooling thermostat with automatic changeover. The kit consists of a system switch, fan switch, and operation lights. It offers ventilation control for the economizer through its ability to modulate the damper to the fully open, fully closed, or normal position. To control the economizer in the occupied and unoccupied modes. To provide immediate status of the operating mode. Fan/Filter Status Provides status of indoor fan (ON/OFF) or filter (CLEAN/DIRTY). Status is displayed with an indicator light at the thermostat in other applications. To provide additional information on fan or filter status. Motormaster Device Kit consists of a solid-state control and condenser coil temperature sensor to modulate the speed of the condenser fan motors in order to maintain condenser-coil lead pressure for proper cooling operation. Whenever cooling is required at low outdoor ambient temperatures (between 25 F and 20 F). Motormaster kit is not usually required when economizer is used. 3

4 CONTENTS Page Model Description...4 ARI Capacities...5 ing Capacities and Efficiencies...5 Dimensional Drawings Specifications...10,11 Selection Procedure...12 Gross Cooling Capacities Air Delivery Electrical Data...25,26 Performance Data Operating Sequence...30,31 Typical Control Wiring...31 Typical Field Wiring...32 Typical Wiring Schematic...33,34 Application Data...35,36 Engineers Specification Guide... 37,38 MODEL DESCRIPTION (ODS Model Number) ODS Order Distribution System *Refer to the CMU price pages for ordering codes on factory-installed options. 4

5 UNIT 581B NOMINAL TONS STANDARD CFM ARI* CAPACITIES NET COOLING CAPACITY (Btuh) Single-Phase Units Three-Phase Units TOTAL kw EER SEER BELS IPLV ,000 36, ** ,000 47, ** ,000 60, ** , ** , , , , BELS Sound Levels (1 bel = 10 decibels) EER Energy Efficiency Ratio IPLV Integrated Part-Load Value SEER Seasonal Energy Efficiency Ratio *Air-Conditioning & Refrigeration Institute. Applies only to units with capacity of 65,000 Btuh or less. **The IPLV is not applicable to single-compressor units. 1. Rated in accordance with ARI Standard 210/240 ( units) or 360 (150 units) and 270 ( units). 2. Ratings are net values, reflecting the effects of circulating fan heat. Ratings are based on: Cooling Standard: 80 F db, 67 F wb indoor entering-air temperature and 95 F db outdoor entering-air temperature. IPLV Standard: 80 F db, 67 F wb indoor entering-air temperature and 80 F db outdoor entering-air temperature. Size 150 only UNIT 581B HEATING INPUT (Btuh) First Stage/Second Stage HEATING CAPACITIES AND EFFICIENCIES UNITS 581B Single-Phase Units* First Stage/Second Stage OUTPUT CAPACITY (Btuh) 3-Phase Units First Stage/Second Stage TEMPERATURE RISE RANGE (F) AFUE (%) STEADY STATE EFFICIENCY (%) CALIFORNIA SEASONAL EFFICIENCY (%) ,000/ 72,000 40,000/ 57,700 41,000/ 59, ,000/115,000 63,500/ 89,000 65,600/ 92, ,000/ 72,000 40,000/ 57,700 41,000/ 59, ,000/115,000 65,600/ 92,000 66,420/ 93, ,000/150,000 94,400/118,000 96,000/120, ,000/ 72,000 40,000/ 57,700 41,000/ 59, ,000/115,000 65,600/ 92,000 66,420/ 93, ,000/150,000 94,400/118,000 96,000/120, ,000/ 72,000 41,000/ 59, ,000/115,000 66,420/ 93, ,000/150,000 96,000/120, UNIT 581B HEATING INPUT (Btuh) First Stage/Second Stage HEATING CAPACITIES AND EFFICIENCIES UNITS 581B OUTPUT CAPACITY (Btuh) First Stage/Second Stage TEMPERATURE RISE RANGE (F) AFUE (%) STEADY STATE EFFICIENCY (%) CALIFORNIA SEASONAL EFFICIENCY (%) ,000/125,000 73,800/102, ,000/180,000 98,400/147, ,000/224, ,600/183, ,000/125,000 73,800/102, ,000/180,000 98,400/147, ,000/224, ,600/183, ,000/180,000 98,400/147, ,000/224, ,600/183, ,000/250, ,000/200, ,000/224, ,600/183, ,000/250, ,000/200, AFUE Annual Fuel Utilization Efficiency NOTE: NO x levels are 40 nanograms/joule with accessory kit. *Single-phase units are rated for output capacity in accordance with U.S. Government Standard Tests. Three-phase units are rated for output capacity in accordance with ANSI Z21.47 Standard for gas fired central furnaces. 5

6 DIMENSIONAL DRAWING, 581B BASE UNIT UNIT 581B STANDARD UNIT WEIGHT VARISLIDE ECONOMIZER WEIGHT CORNER WEIGHT A CORNER WEIGHT B CORNER WEIGHT C CORNER WEIGHT D Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg A B C D E F G CONNECTION SIZES Dia. [35] Field Power Supply Hole 2 Dia. [51] Power Supply Knock-Out Dia. [44] Charging Port Hole 7 8 Dia. [22] Field Control Wiring Hole NPT Condensate Drain NPT Gas Connection Dia. [64] Power Supply Knock-Out 1. Dimensions in [ ] are in millimeters. 2. Center of Gravity. 3. Direction of airflow. 4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For horizontal discharge units field-supplied flanges should be attached to horizontal discharge openings, and all ductwork should be attached to the flanges. 5. Minimum clearance (local codes or jurisdiction may prevail): a. Between unit, flue side and combustible surfaces, 48 inches. b. Bottom of unit to combustible surfaces (when not using curb) 1 inch. Bottom of base rail to combustible surfaces (when not using curb) 0 inches. c. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater clearance is optional. d. Overhead, 60 in. to assure proper condenser fan operation. e. Between units, control box side, 42 in. per NEC (National Electrical Code). f. Between unit and ungrounded surfaces, control box side, 36 in. per NEC. g. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in. per NEC. h. Horizontal supply and return end, 0 inches. 6. With the exception of the clearance for the condenser coil and combustion side as stated in Note 5a, b, and c, a removable fence or barricade requires no clearance. 7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material if set on base rail. 8. The vertical center of gravity is 1-6 [457] up from the bottom of the base rail. BOTTOM POWER CHART, THESE HOLES REQUIRED FOR USE WITH ACCESSORY PACKAGES CRBTMPWR001A00 ( 1 2, 3 4 ) THREADED CONDUIT SIZE WIRE USE REQUIRED SIZES (MAIMUM) V 7 8 [22.2] 3 4 Power [28.4] 6

7 DIMENSIONAL DRAWING, 581B BASE UNIT UNIT 581B STANDARD UNIT WEIGHT VARISLIDE ECONOMIZER WEIGHT CORNER WEIGHT A CORNER WEIGHT (B) CORNER WEIGHT (C) CORNER WEIGHT (D) H J K L Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg ft-in. mm ft-in. mm ft-in. mm ft-in. mm Dimensions in [ ] are in millimeters. CONNECTION SIZES 2. Center of Gravity. A Dia. [35] Field Power Supply Hole 3. Direction of airflow. B Dia. [64] Power Supply Knock-Out 4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For horizontal discharge units field-supplied flanges should be attached to horizontal discharge openings, and all ductwork should be attached to the flanges. 5. Minimum clearance (local codes or jurisdiction may prevail): a. Between unit, flue side and combustible surfaces, 48 inches. b. Bottom of unit to combustible surfaces (when not using curb) 1 inch. Bottom of base rail to combustible surfaces (when not using curb) 0 inches. c. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater clearance is optional. d. Overhead, 60 in. to assure proper condenser fan operation. e. Between units, control box side, 42 in. per NEC (National Electrical Code). f. Between unit and ungrounded surfaces, control box side, 36 in. per NEC. g. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in. per NEC. h. Horizontal supply and return end, 0 inches. 6. With the exception of the clearance for the condenser coil and combustion side as stated in Notes 5, a removable fence or barricade requires no clearance. 7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material if set on base rail. 8. The vertical center of gravity is 1-7 [483] for 090 and 102, 1-11 [584] for 120 and 150 up from the bottom of the base rail. BOTTOM POWER CHART, THESE HOLES REQUIRED FOR USE WITH ACCESSORY PACKAGES CRBTMPWR001A00 ( 1 2, 3 4 ) OR CRBTMPWR002A00 ( 1 2, ) THREADED CONDUIT SIZE WIRE USE REQUIRED HOLE SIZES (MAIMUM) V 7 8 [22.2] 3 4 Power* [28.4] Power* [44.4] *Select either 3 4 or for power, depending on wire size. C D E F G Dia. [44] Charging Port Hole 7 8 Dia. [22] Field Control Wiring Hole NPT Condensate Drain NPT Gas Connection 581B V B V NPT Gas Connection (All other units) 2 Dia. [51] Power Supply Knock-Out 7

8 DIMENSIONAL DRAWING, 581B ROOF CURB ROOF CURB ACCESSORY CRRFCURB001A00 CRRFCURB002A00 A 14 [356] 24 [610] UNIT SIZE 581B Roof curb accessory is shipped disassembled. 2. Insulated panels. 3. Dimensions in [ ] are in millimeters. 4. Roof curb: galvanized steel. 5. Attach ductwork to curb (flanges of duct rest on curb). 6. Service clearance 4 ft on each side. 7. Direction of airflow. UNIT 581B B C SERVICE PLATE SIZES D Alt Drain Hole E Gas F Power G Control CONNECTOR PACKAGE ACCESSORY [551] 16 [406] [44.5] 3 4 NPT 3 4 NPT 3 4 NPT 3 4 NPT 3 4 NPT 1 2 NPT (Thru-the-Side) CRBTMPWR001A00 (Thru-the-Bottom) 8

9 DIMENSIONAL DRAWING, 581B ROOF CURB UNIT 581B B [827] C [583] D ALT DRAIN HOLE [45] E GAS F POWER G CONTROL 3 4 NPT 1 NPT 3 4 NPT 3 4 NPT 3 4 NPT 1 2 NPT 3 4 NPT NPT 1 2 NPT CONNECTOR PKG ACY 50DJ (THRU-THE-SIDE) CRBTMPWR001A00 (THRU-THE-BOTTOM) CRBTMPWR002A00 (THRU-THE-BOTTOM) ROOF CURB ACCESSORY A CRRFCURB003A [356] CRRFCURB004A [610] UNIT SIZE 581B Roof curb accessory is shipped unassembled. 2. Insulated panels. 3. Dimensions in [ ] are in millimeters. 4. Roof curb: galvanized steel. 5. Attach ductwork to curb (flanges of duct rest on curb). 6. Service clearance 4 ft on each side. 7. Direction of airflow. 9

10 SPECIFICATIONS BASE UNIT 581B NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit With Varislide Economizer With PARABLADE Economizer Roof Curb COMPRESSOR Scroll Quantity Oil (oz) REFRIGERANT TYPE R-22 Operating Charge (lb-oz) CONDENSER FAN Propeller Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total) CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins Rows...Fins/in Total Face Area (sq ft) EVAPORATOR FAN Centrifugal Size (in.) 10x10 10x10 10x10 10x10 Type Drive Belt Belt Belt Belt Nominal Cfm Maximum Continuous Bhp Motor Frame Size Fan Rpm Range Motor Bearing Type Ball Ball Ball Ball Maximum Fan Rpm Motor Pulley Pitch Diameter A/B (in.) 1.9/ / / /3.4 Nominal Motor Shaft Diameter (in.) Fan Pulley Pitch Diameter (in.) Belt Type...Length (in.) A...33 A...36 A...40 A...38 Pulley Center Line Distance (in.) Speed Change Per Full Turn of Movable Pulley Flange (rpm) Movable Pulley Maximum Full Turns from Closed Position Factory Setting Full Turns Open Factory Speed Setting (rpm) Fan Shaft Diameter at Pulley (in.) EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double Wavy Fins, Acutrol Feed Device Rows...Fins/in Total Face Area (sq ft) FURNACE SECTION Medium High Low Rollout Switch Cutout Temp (F)* Burner Orifice Diameter (in....drill size) Natural Gas Std Liquid Propane Alt** Thermostat Anticipator Setting (amps) 208/230/460 v Stage Stage Gas Input (Btuh) Stage 1 50,000 82,000 50,000 82, ,000 50,000 82, ,000 50,000 82, ,000 Stage 2 72, ,000 72, , ,000 72, , ,000 72, , ,000 Efficiency (Steady State) (%) Temperature Rise Range (F) Manifold Pressure (in. wg) Natural Gas (Std) Liquid Propane (Alt)** Maximum Static Pressure (in. wg) Gas Valve Quantity Field Gas Connection Size (in.) HIGH-PRESSURE SWITCH (psig) Standard Compressor Internal Relief 450±50 Cutout 428 Reset (Auto.) 320 LOSS-OF-CHARGE/LOW-PRESSURE SWITCH (Liquid Line) (psig) Cutout 7±3 Reset (Auto.) 22±5 FREEZE-PROTECTION THERMOSTAT Opens (F) 30±5 Closes (F) 45±5 OUTDOOR-AIR INLET SCREENS Cleanable Quantity...Size (in.) x 24 x 1 RETURN-AIR FILTERS Throwaway Quantity...Size (in.) x 25 x 2 Bhp Brake Horsepower *Indicates automatic reset. 581B units have 2 burners. 581B and 581B units have 3 burners. **Indicates an accessory. Medium High Low Medium High Low Medium High 10

11 SPECIFICATIONS (cont) BASE UNIT 581B NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit With Varislide Economizer With PARABLADE Economizer Roof Curb COMPRESSOR Scroll Quantity Oil (oz) (each compr) REFRIGERANT TYPE R-22 Operating Charge (lb-oz) Circuit Circuit CONDENSER FAN Propeller Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total) CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins Rows...Fins/in Total Face Area (sq ft) EVAPORATOR FAN Centrifugal Size (in.) 15x15 15x15 15x15 15x15 Type Drive Belt Belt Belt Belt Nominal Cfm Std [Alt] 3000 [ ] 3400 [ ] 4000 [ ] 5000 [4000] Maximum Continuous Bhp Std [Alt] 2.90 [ ] 2.90 [ ] 4.20 [ ] 5.25 [4.20] Motor Frame Size Fan Rpm Range Std [Alt] [ ] [ ] [ ] [ ] Motor Bearing Type Ball Ball Ball Ball Maximum Fan Rpm Motor Pulley Pitch Diameter A/B (in.) Std [Alt] 3.4/4.4 [ ] 3.4/4.4 [ ] 4.0/5.0 [ ] 2.8/3.8 [4.0/5.0] Nominal Motor Shaft Diameter (in.) Fan Pulley Pitch Diameter (in.) Std [Alt] 7.0 [ ] 7.0 [ ] 8.0 [ ] 5.8 [8.0] Belt Type...Length (in.) Std [Alt] A...51 [ ] A...51 [ ] A...51 [ ] B...46 [A...51] Pulley Center Line Distance (in.) Speed Change Per Full Turn of Movable Pulley Flange (rpm) Std [Alt] 50 [ ] 50 [ ] 45 [ ] 60 [45] Movable Pulley Maximum Full Turns from Closed Position Std [Alt] 5 [ ] 5 [ ] 5 [ ] 6 [5] Factory Setting Full Turns Open Factory Speed Setting (rpm) Std [Alt] 840 [ ] 840 [ ] 860 [ ] 960 [860] Fan Shaft Diameter at Pulley (in.) EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double Wavy Fins Rows...Fins/in Total Face Area (sq ft) FURNACE SECTION Low Medium High Low Medium High Low Medium High Medium Rollout Switch Cutout Temp (F)* Burner Orifice Diameter (in....drill size) Natural Gas Std Liquid Propane Alt** Thermostat Anticipator Setting (amps) 208/230/460/575 v Stage Stage Gas Input (Btuh) Stage 1 90, , ,000 90, , , , , , , ,000 Stage 2 125, , , , , , , , , , ,000 Efficiency (Steady State) (%) Temperature Rise Range (F) Manifold Pressure (in. wg) Natural Gas (Std) Liquid Propane (Alt)** Maximum Static Pressure (in. wg) Field Gas Connection Size (in.) HIGH-PRESSURE SWITCH (psig) Standard Compressor Internal Relief 450±50 500±50 Cutout Reset (Auto.) LOSS-OF-CHARGE/LOW-PRESSURE SWITCH (Liquid Line) (psig) Cutout 7±3 Reset (Auto.) 22±7 FREEZE-PROTECTION THERMOSTAT Opens (F) 30±5 Closes (F) 45±5 OUTDOOR-AIR INLET SCREENS Cleanable Quantity...Size (in.) x 25 x x 25 x 1 RETURN-AIR FILTERS Throwaway Quantity...Size (in.) x 20 x x 20 x x 20 x x 20 x 2 Bhp Brake Horsepower *Indicates automatic reset. 581B090125, units have 3 burners. 581B units have 4 burners. 581B units and 581B120250, units have 5 burners. **Indicates an accessory. 11 High

12 SELECTION PROCEDURE (with 581BJV example) I DETERMINE COOLING AND HEATING REQUIRE- MENTS AT DESIGN CONDITIONS: Given: Total Cooling Capacity Required...44,600 Btuh Sensible Capacity...32,000 Btuh Required ing Capacity...85,000 Btuh Condenser Entering Air Temperature...95F Evaporator Entering Air Temperature...82FEdb/ 67 F Ewb Evaporator Air Quantity cfm External Static Pressure in. wg Power Supply (V-Ph-Hz) II DETERMINE UNIT SIZE: Select unit based on cooling requirements. Enter Gross Cooling Capacities tables on pages at condenser entering temperature of 95 F, evaporator air entering at 1600 cfm and 80 F db and 67 F wb. The 581B048 unit will provide a gross cooling capacity of 48,900 Btuh and a sensible heat capacity of 34,700 Btuh. Since the evaporator air temperature is 82 F, calculate sensible heat capacity correction, using the formula found in Note 3 following the Gross Cooling Capacities tables. For this example: Correction factor = 1.10 x (1 -.21) x (82-80) = From the Gross Cooling Capacities tables find that the sensible heat capacity at 80 F is 34.7 MBtuh (equivalent to 34,700 Btuh). Add 34,700 and 2,781 to get the corrected sensible heat capacity of 37,481. NOTE: Unit ratings are gross capacities and do not include the effect of evaporator-fan motor heat. To calculate net capacities, see Step V. III SELECT HEATING CAPACITY OF UNIT TO PROVIDE DESIGN CONDITION REQUIREMENTS: In the ing Capacities table on page 5, note that unit 581B will provide output capacity of 92,000 Btuh, which is adequate for the given application. IV DETERMINE FAN SPEED AND POWER REQUIRE- MENTS AT DESIGN CONDITIONS: Before entering the Air Delivery tables on pages 17-24, calculate the total static pressure required based on unit components. From the given and the Economizer Static Pressure Drop table on page 28, find: External static pressure 0.75 in. wg Varislide Economizer 0.05 in. wg Total Static Pressure 0.80 in. wg Enter the Air Delivery table for 581B048 Vertical Discharge. At 1600 cfm the motor will deliver 1.10 in. wg static pressure and 1.17 bhp. This will adequately handle the job requirements. Using the Evaporator-Fan Motor Efficiency tale on page 28, convert 1.17 bhp to watts. bhp (746) Watts = motor efficiency 1.17 (746) Watts =.75 Watts = 1164 V DETERMINE NET COOLING CAPACITY: Cooling capacities are gross capacities and do not include indoor (evaporator) fan motor (IFM) heat. Determine net capacity using the following formula: Net capacity = gross capacity IFM heat Btuh = 48,900 Btuh 1164 Watts (3.413 ) Watt = 48,900 Btuh 3973 Btuh Net capacity = 44,927 Btuh Net sensible capacity = 37, Btuh Net sensible capacity = 33,508 Btuh 12

13 GROSS COOLING CAPACITIES 581B036 (3 TON) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B036 (3 TON) (cont) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B048 (4 TON) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B048 (4 TON) (cont) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw BF Bypass Factor Ewb Entering Wet-Bulb kw Compressor Motor Power Input ldb Leaving Dry Bulb lwb Leaving Wet Bulb 1. Direct interpolation is permissible. Do not extrapolate. 2. The following formulas may be used: t ldb = tedb sensible capacity (Btuh) 1.10 x cfm t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving evaporator coil (h lwb) total capacity (Btuh) h lwb = hewb 4.5 x cfm Where: h ewb = Enthalpy of entering evaporator coil 3. The sensible heat capacity is based on 80 F entering dry-bulb (edb) temperature of air entering evaporator coil. Below 80 F edb, subtract (corr factor x cfm) from the sensible heat capacity. Above 80 F edb, add (corr factor x cfm) to the sensible heat capacity. Correction Factor = 1.10 x (1 BF) x (edb 80). 13

14 GROSS COOLING CAPACITIES (cont) 581B060 (5 TON) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B060 (5 TON) (cont) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B072 (6 TON) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B072 (6 TON) (cont) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw

15 581B090 (7 1 2 TON) Indoor Air Cfm BF F Ewb 581B090 (7 1 2 TON) (cont) Indoor Air Cfm BF GROSS COOLING CAPACITIES (cont) Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B102 (8 1 2 TON) Indoor Air Cfm BF F Ewb 581B102 (8 1 2 TON) (cont) Indoor Air Cfm BF Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw BF Bypass Factor Ewb Entering Wet-Bulb kw Compressor Motor Power Input ldb Leaving Dry Bulb lwb Leaving Wet Bulb 1. Direct interpolation is permissible. Do not extrapolate. 2. The following formulas may be used: t ldb = tedb sensible capacity (Btuh) 1.10 x cfm t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving evaporator coil (h lwb) total capacity (Btuh) h lwb = hewb 4.5 x cfm Where: h ewb = Enthalpy of entering evaporator coil 3. The sensible heat capacity is based on 80 F entering dry-bulb (edb) temperature of air entering evaporator coil. Below 80 F edb, subtract (corr factor x cfm) from the sensible heat capacity. Above 80 F edb, add (corr factor x cfm) to the sensible heat capacity. Correction Factor = 1.10 x (1 BF) x (edb 80). 15

16 GROSS COOLING CAPACITIES (cont) 581B120 (10 TON) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B120 (10 TON) (cont) Indoor Air Cfm BF F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw B150 ( TON) Indoor Air Cfm BF F Ewb 581B150 ( TON) (cont) Indoor Air Cfm BF Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw F Ewb Outdoor-Air Temperature (F) Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Total Sensible kw Total Sensible kw Total Sensible Compressor kw BF Bypass Factor Ewb Entering Wet-Bulb kw Compressor Motor Power Input ldb Leaving Dry Bulb lwb Leaving Wet Bulb 1. Direct interpolation is permissible. Do not extrapolate. 2. The following formulas may be used: t ldb = tedb sensible capacity (Btuh) 1.10 x cfm t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving evaporator coil (h lwb) total capacity (Btuh) h lwb = hewb 4.5 x cfm Where: h ewb = Enthalpy of entering evaporator coil 3. The sensible heat capacity is based on 80 F entering dry-bulb (edb) temperature of air entering evaporator coil. Below 80 F edb, subtract (corr factor x cfm) from the sensible heat capacity. Above 80 F edb, add (corr factor x cfm) to the sensible heat capacity. Correction Factor = 1.10 x (1 BF) x (edb 80). 16