Models 575B, 575C, 541A with 524A-H

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COMMERCIAL

SPLIT SYSTEM

HEAT PUMP

Heat Pump Systems that Save Energy and Provide Outstanding Heating and Cooling All Year

• All-season comfort in any climate • High energy savings capability

• Suitable for new construction or replacement

FEATURES/BENEFITS

System indoor and outdoor sections offer outstanding perfor-mance in either the Cooling or Heating mode.

HEAT PUMP SYSTEM ENERGY SAVINGS OPPORTU-NITY — Electrical energy consumption is always a prime concern when selecting an air-conditioning system for a com-mercial application. An easy, effective way to save energy is to install a heat pump. Should your building plans call for one, consider a matched Bryant 575B, 575C, 541A/524A-H heat pump system. These systems not only offer highly efficient cooling, they also provide a clean, safe, efficient source of heat. In fact, they are capable of delivering approximately 3 units of heat energy for each unit of electrical power consumed. HEAT PUMP UNIQUENESS — The outstanding performance of these heat pump systems is due to the heat pump’s ability to absorb and transfer heat — from outdoors to indoors for heat-ing, and from indoors to outdoors for cooling. System indoor and outdoor sections operate as evaporators or condensers, depending on whether heating or cooling is required. The heat-ing cycle always starts with the outdoor coil absorbheat-ing heat from

the surrounding air (even outside air at extremely cold tempera-tures), and ends with the indoor coil releasing or rejecting heat to the air around it.

575B, 575C AND 541A APPLICATION VERSATILITY — Whether for a new application or replacement, these Bryant split system heat pumps offer time-proven performance for year-round comfort in any climate.

RUGGED LONG LIFE COMPRESSOR

575B and 575C Units — The 575B and 575C outdoor units are equipped with a scroll compressor for superior efficiency and long life. A recycle delay device in the unit control box will dis-able the compressor if any operational or safety devices open and stop the compressor. The unit safety circuit may be reset manually at the thermostat.

541A Units — The 541A180 outdoor unit is equipped with an 06D semi-hermetic compressor, which is famous throughout the industry for reliability. This compressor has a vane-type oil pump for positive oil pressure, an oil pressure regulating valve, a low oil pressure switch, Class F stator windings, capacity reduction, oil level sight glass and service valves. The 541A180 with cylin-der unloading (one unloacylin-der is standard equipment) can reduce capacity during cooling operation to reduce energy usage and improve space temperature regulation. A Cycle-LOC™ device in the control box will disable the compressor if any operational or safety devices open and stop the compressor. The unit safety circuit may be reset manually at the thermostat.

Models 575B, 575C,

541A with 524A-H

Sizes 072-300

Nominal Cooling: 6 to 25 Tons

Nominal Heating: 71,000 to 270,000 Btuh

575B072

541A180

524A-H 575C090,120

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CONTROLS FOR PERFORMANCE EFFICIENCY — These units offer the building owner operating controls and components designed for performance dependability. The highly efficient scroll or semi-hermetic compressors are engineered for long life and durability. The compressor includes overload protection and compressor vibration isolation for further enhancement of quiet operation. The high-pressure switch protects the entire refrigeration system from abnormally high operating pressures. A loss-of-charge switch is also provided to protect the system against low charge conditions.

The unit also includes anti-short-cycling protection which pro-tects the compressor from the damage that can be caused by rapid compressor cycling. The 24-v control circuit transformer permits quick, easy wiring of standard and programmable 24-v thermostats.

Latest safety standards are assured through UL (Underwriters’ Laboratories) and UL, Canada approval.

The 575B, 575C and 541A units utilize a state-of-the-art defrost board with field configurable timed defrost cycles. The defrost board may be easily configured for defrost cycles of 30 to 90 minutes, depending upon the application.

Motor failure due to electrical overload is prevented by tempera-ture and current sensors. Coil quality and performance are enhanced by copper tubes and aluminum fins, which provide maximum heat transfer. The coil is circuited for subcooling. A large heat transfer surface offers additional efficiency.

INNOVATIVE BRYANT 524A-H INDOOR UNITS ARE CUS-TOM MATCHED TO 575B, 575C AND 541A OUTDOOR UNITS FOR SUPERIOR SYSTEM PERFORMANCE — The 524A-H Series has excellent fan performance, efficient direct-expansion (DX) coils, easy installation, and a unique combination of indoor air quality features. Its versatility and state-of-the-art features help to ensure that your heat pump system provides economical performance now and in the future.

Easy Installation and Service — The 524A-H multiposition design and component layout helps to get the unit installed and running quickly. The direct-expansion (DX) coils have factory-installed thermostatic expansion valves (TXVs) with matching distributor nozzles. All 524A-H units also include factory-installed check valves and piping for heat pump duty with matching 575B, 575C or 541A units.

The 524A-H units can be converted from horizontal to vertical operation by simply repositioning the unit. Drain pan connec-tions are duplicated on both sides of the unit. Fan motors and contactors are prewired. For easier service, the filters, motor, drive, TXVs, check valves, and coil connections are accessible by removing a single side panel.

Indoor-Air Quality (IAQ) Features — The unique combination of IAQ features in the 524A-H Series indoor units helps to make sure that only clean, fresh, conditioned air is delivered to the occupied space.

In the Cooling mode, direct-expansion (DX) cooling coils pre-vent the build-up of humidity in the room, even during part-load conditions. Unit sizes of 10 tons and above feature dual-circuit coils.

Standard 2-in. disposable filters remove dust and airborne parti-cles from the occupied space.

Thermal insulation contains an immobilized anti-microbial agent to inhibit the growth of bacteria and fungi. The anti-microbial agent is registered with the U.S. Environmental Protection Agency (EPA).

The pitched corrosion-free drain pan can be adjusted for a right-or left-hand connection to provide positive drainage and to pre-vent standing condensate.

The 524A-H accessory economizer can provide ventilation air to improve indoor air quality.

Economy — The 524A-H Series air handlers have low initial costs, and they continue to save money by providing reduced installation expense and energy-efficient performance.

Quick installation reduces installation costs, and TXVs, check valves, and heat pump piping are factory-installed.

High-efficiency, precision-balanced fans minimize air turbu-lence, surging, and unbalanced operation, cutting operating expenses.

The economizer accessory precisely controls the blend of out-door air and room air to achieve comfort levels.

When the outside air enthalpy is suitable, outside air dampers can fully open to provide “free” cooling.

Rugged Dependability — The 524A-H units are made to last. The die-formed galvanized steel panels ensure structural integ-rity under all operating conditions. Galvanized steel fan hous-ings are securely mounted to a die-formed galvanized steel deck. Coil housings are galvanized steel, and coils have alumi-num fins mechanically bonded to copper tubes. The conden-sate drain pans provide corrosion-free performance.

Coil Flexibility — Model 524A-H coils have galvanized steel casings; inlet and outlet connections are on the same end. The coils are designed for use with Refrigerant 22 and have3_/₈_-in.

diameter copper tubes mechanically bonded to aluminum sine-wave fins. The coils include matched, factory-installed TXVs with matching distributor nozzles. Check valves and heat pump piping are also included in all 524A-H units.

Duplicate piping access holes on both sides of the unit elimi-nate drilling; condensate connections for both vertical and hori-zontal installations are also provided on both sides of the unit.

TABLE OF CONTENTS

Page Features/Benefits . . . 1,2 Model Number Nomenclature. . . 3,4 ARI Capacity Ratings . . . 5 Options and Accessories . . . 6-9 Physical Data . . . 10,11 Dimensions — Outdoor Units . . . 12-14 Dimensions — Indoor Units . . . 15-18 Selection Procedure . . . 19 Performance Data. . . 20-27 Typical Piping and Wiring . . . 28,29 Electrical Data . . . 30-35 Controls . . . 36,37 Typical Wiring Schematic . . . 38,39 Application Data . . . 39-42 Guide Specifications . . . 43-49

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MODEL NUMBER NOMENCLATURE 575B P X 072 000 AA

575B – Commercial Split System

Heat Pump with Scroll Compressor Voltage Designation P — 208/230-3-60 E — 460-3-60 T — 575-3-60 Nominal Tons 072 — 6 Tons Factory-Installed Options AA — No Options

HG — Security Grille/Hail Guard Electric Heaters

000 — No Factory-Installed Electric Heater X — No Heat Installed

(field-installed electric heaters available)

575C P X 120 000 – –

575C — Commercial Split-System Heat Pump Unit With Scroll Compressor Voltage Designation E — 460-3-60 P — 208/230-3-60 T — 575-3-60 Heating X — None

Nominal Tons Cooling 090 — 7-1/2

120 — 10 Heating Capacity 000 — No Heat

Factory-Installed Options* Rated in accordance with ARI Standard 210.

Certification applies only when used with proper components as listed with ARI.

*Contact your local representative for details.

Quality Assurance

Certified to ISO 9001:2000

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MODEL NUMBER NOMENCLATURE (cont) 541A E X 180 000 AA

541A – Commercial Split System

Heat Pump with Semi-Hermetic Compressor Voltage Designation

E — 460-3-60 P — 208/230-3-60

Cooling Capacity 180 — 15 Tons

Condenser Coil Protection Options AA — Standard Aluminum Fin/

Copper Tube Coil KA — Pre-Coated Aluminum Fin/

Copper Tube Coil EA — E-Coated Al Fin/Cu Tube

Not Used Not Used

LEGEND

*YC and WD option codes for 090 size with single-phase motors designate standard motor and high-static drive.

†All 524A090 and 120 units with an “E” voltage designation are triple voltage (i.e., 208-230/460-3-60). Size 524A180 is also triple voltage in the “E” configuration unless the alternate motor (YC or WD) option is used.

DX — Direct Expansion

TXV — Thermostatic Expansion Valve

541A UNITS 524A UNITS LEGEND Al — Aluminum Cu — Copper

Quality Assurance

Certified to ISO 9001:2000 ANCE MX-0074/2003 CRE 0053

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ARI* CAPACITY RATINGS

LEGEND

*Air Conditioning & Refrigeration Institute. †Energy Star® compliant.

NOTES:

1. Standard ratings are net values, reflecting the effects of circulating fan heat. Supplementary electric heat is not included. Ratings are based on:

Cooling Standard: 80 F db, 67 F wb (wet bulb) indoor entering-air

tempera-ture and 95 F db entering-air outdoor unit.

Hi-Temp Heating Standard: 70 F db (dry bulb) indoor entering-air

tempera-ture and 47 F db/43 F wb entering-air outdoor unit.

Lo-Temp Heating Standard: 70 F db indoor entering-air temperature and

17 F wb/15 F db entering-air outdoor unit.

Unit combinations are rated in accordance with ARI standard 210/240-95 or 340/360-2000 as appropriate.

2. 575C120 and 541A180 are connected to 524A-H240,300 in duplex configurations.

SOUND LEVELS (dB), 60 Hz

NOTES:

1. Estimated sound power levels, dB re 1 Picowatt.

2. 575C and 541A data is based upon a limited amount of actual test-ing with the estimated sound power data betest-ing generated from this data in accordance with ARI standard 370 for large outdoor refrig-erating and air-conditioning equipment.

3. 524A-H data is based on the ASHRAE calculation approach from the ASHRAE handbook 1987 HVAC Systems & Applications, Chapter 52.

4. Since this data is estimated, the sound power levels should not be guaranteed or certified as being the actual sound power levels. 5. The acoustic center of the unit is located at the geometric center of

the unit. OUTDOOR UNIT INDOOR UNIT 524A-H COOLING HEATING Hi-Temp Low-Temp Net Capacity

(Btuh) EER IPLV

Net Capacity (Btuh) COP Net Capacity (Btuh) COP 575B072† 090 75,000 10.3 N/A 71,000 3.2 46,000 2.3 575C090† 090 88,000 10.4 N/A 93,000 3.2 57,000 2.2 575C120† 120 105,000 10.1 N/A 100,000 3.2 67,000 2.2 541A180 180 174,000 9.3 11.3 172,000 3.1 100,000 2.1 575C120 x2 240 208,000 9.3 10.5 200,000 3.1 122.000 2.2 541A180 & 575C120 300 272,000 9.3 9.5 270,000 3.1 158,000 2.1

COP — Coefficient of performance = Btuh output or Btuh input Btuh output

(Based on ARI conditions) Unit Power Input x 3.413

EER — Energy Efficiency Ratio = Btuh (Based on ARI conditions) Unit Power Input

IPLV — Integrated Part-Load Value

UNIT OCTAVE BAND

63 125 250 500 1000 2000 4000 8000 dBA 575C090 83.1 82.3 82.6 80.9 81.2 78.1 72.8 67.3 85.0 575C120 88.7 82.3 82.6 81.2 81.2 79.2 73.8 67.8 86.0 541A180 N/A 93.0 86.0 83.0 80.0 78.0 73.0 71.0 86.0 524A-H090 95.3 91.3 87.3 86.3 82.3 80.3 76.7 N/A 88.3 524A-H120 99.0 95.0 91.0 90.0 86.0 84.0 80.0 N/A 92.0 524A-H180 99.2 95.2 91.2 92.2 86.2 84.2 80.2 N/A 92.9 524A-H240 102.6 98.6 94.6 95.6 89.6 87.6 83.6 N/A 96.4 524A-H300 102.5 98.5 94.5 95.5 89.5 87.5 83.5 N/A 96.2

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OPTIONS AND ACCESSORIES OUTDOOR UNITS

*Factory-installed option. †Field-installed accessory.

**Available as an option or accessory for 575C; accessory only for 541A.

Dura-Shield Outdoor Coil Options are available to match coil protection to site conditions for optimum durability. See the table below and refer to the Application data for selection guidance. Consult your Bryant representative for further information. Low Ambient Temperature Motormaster Head Pressure Control operates in Cooling mode at outdoor temperatures below 55 F. The Motormaster control varies the speed of out-door-fan motors to maintain correct condensing temperature down to –20 F.

115-V Convenience Outlet is available to provide power to electric drills, lights, and refrigerant recovery machines. This means you are not longer required to run a separate 115-v power supply.

Non-Fused Disconnect Switch removes power locally at the condensing unit. This switch also includes a power lockout capability to protect the service person. This lockout switch saves the service person time and effort because there is no

need to access a distant disconnect switch while servicing the unit.

Outdoor Coil Hail Guard protects outdoor units from hail and other flying debris.

Outdoor Coil Grille protects outdoor coil from large objects and vandalism.

Mounting Legs hold unit approximately 18 in. off the ground to allow for condensate drain connection.

Non-Programmable Thermostats provide one- or 2-stage cooling for control of unit. Matching subbases are available with or without tamperproof switches and automatic changeover. Bryant Commercial Programmable Thermostats provide effi-cient temperature control by allowing you to program heating and cooling setbacks and setups with provisions for weekends and holidays.

OUTDOOR COIL PROTECTION APPLICATIONS (575C, 541A)

LEGEND

ITEM OPTION* ACCESSORY†

Disconnect Switch (non-fused) (575C only) X

Dura-ShieldCoil Protection (575C, 541A only) X

Convenience Outlet (115-v) (575C only) X

Low Ambient Temperature Motormaster® Control** X X

Mounting Legs (541A180 only) X

Outdoor Coil Grille (575C090,120; 541A180) X

Outdoor Coil Hail Guard (575C090,120) X

Outdoor Coil Security Grille/Hail Guard (575B072) X

Programmable Thermostats X

Non-Programmable Thermostats X

DESCRIPTION (Dura-ShieldOption)

ENVIRONMENT

Standard _CoastalMild Moderate_Coastal _CoastalSevere Industrial

Standard, Al/Cu X

Pre-Coated Al/Cu X

E-Coated Al/Cu X X X

Al/Cu — Aluminum Fin with Copper Tube Coil

Dura-Shield — Family of Coil Protection Options

E-Coated — Epoxy Coating Applied to Entire Coil Assembly Pre-Coated — Epoxy Coating Applied to Fin Stock Material

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OPTIONS AND ACCESSORIES (cont) INDOOR UNITS

*Factory-installed option. †Field-installed accessory.

Alternate Fan Motors and Drives are available to provide the widest possible range of performance.

Prepainted Steel Units are available from the factory for appli-cations that require painted units. Units are painted with Ameri-can Sterling Gray color.

Two-Row Hot Water Coils have copper tubes mechanically bonded to aluminum plate fins and non-ferrous headers. One-Row Steam Coil has copper tubes and aluminum fins. The Inner Distributing Tube (IDT) design provides uniform tem-peratures across the coil face. The steam coil has a broad oper-ating pressure range; up to 20 psig (138 kPag) at 260 F (127 C). The IDT steam coils are especially suited to applica-tions where sub-freezing air enters the unit.

Electric Resistance Heat Coils have an open-wire design and are mounted in a rigid frame. Safety cutouts for high tempera-ture conditions are standard. Terminal block for single-point power connection is included.

Economizer (Enthalpy Controlled) provides ventilation air and “free” cooling if outside ambient temperature and humidity are suitable. Can also be used with CO2sensors to help meet

indoor air quality requirements.

Discharge Plenum directs the air discharge directly into the occupied space; integral horizontal and vertical louvers enable redirection of airflow. Accessory is available unpainted or painted. Field assembly required.

Return-Air Grille provides a protective barrier over the return-air opening and gives a finished appearance to units installed in the occupied space. Accessory is available unpainted or painted.

Subbase provides a stable, raised platform and room for con-densate drain trap connection for vertical floor-mounted units. Accessory is available unpainted or painted.

Overhead Suspension Package includes necessary brackets to support units in horizontal ceiling installations.

CO2Sensors can be used in conjunction with the economizer accessory to help meet indoor air quality requirements. The sensor signals the economizer to open when the CO2level in

the space exceeds the set point.

Condensate Drain Trap includes an overflow shutoff switch that can be wired to turn off the unit if the trap becomes plugged. Kit also includes a wire harness that can be connected to an alarm if desired. The transparent trap is designed for easy service and maintenance.

UV-C Germicidal Lamps kill mold and fungus, which may grow on evaporator coil and condensate pan surfaces. The use of UV-C germicidal lamps eliminates the foul odors that result from this growth of mold and fungus. It also provides a self-cleaning function for the evaporator coil and drain pan.

ITEM OPTION* ACCESSORY†

Alternate Fan Motors X

Alternate Drives X

Prepainted Units X

Hot Water Heating Coil X

Steam Heating Coil X

Electric Heat X

Economizer X

Discharge Plenum X

Return-Air Grille X

Subbase X

Overhead Suspension Package X

CO2Sensors X

Condensate Drain Trap X

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OPTIONS AND ACCESSORIES (cont)

H C

BRYANT COMMERCIAL PROGRAMMABLE THERMOSTAT

NON-PROGRAMMABLE THERMOSTAT

Thermostats

575C Unit-Mounted Disconnect

Factory-installed, internally-mounted, NEC (National Electrical Code) and UL (Underwriters’ Laboratories) approved non-fused switch provides unit power shutoff with disconnect lockout protec-tion capability. The switch is accessible from outside the unit.

575C Convenience Outlet

Factory-installed, internally mounted and externally accessible 115-v female receptacle. Includes 15-amp GFI (Ground Fault Interrupter) receptacle with independent fuse protection. A factory-supplied step down transformer is wired to the “load” side of the unit’s main power connection.

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OPTIONS AND ACCESSORIES (cont) DISCHARGE PLENUM RETURN-AIR GRILLE SUBBASE FAN COIL UNIT 524A-H with Discharge Plenum,

Return-Air Grille and Subbase

524A-H with Hot Water or Steam Coil

524A-H with Economizer and UV-C Germicidal Lamps

524A-H with Condensate Drain Trap ECONOMIZER

UV-C GERMICIDAL LAMPS

FAN COIL UNIT HOT WATER OR STEAM COIL

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PHYSICAL DATA OUTDOOR UNITS

*Unit is factory supplied with holding charge only.

†Typical operating charge with 25 ft of interconnecting pipe. **Storage capacity of condenser coil with 80% full of liquid at 95 F.

††Equipped with electrically operated unloader, capacity steps 100%, 67% in cooling mode.

UNIT 575B072 575C090 575C120 541A180

NOMINAL CAPACITY (tons) 6 7.5 10 15

OPERATING WEIGHTS (lb)

Aluminum-Fin Coils (standard) 345 464 506 803

Copper-Fin Coils (optional) N/A 565 607 945

REFRIGERANT*

Type R-22

Operating Charge, Typical (lb)† 20 20 22 37

Shipping Charge (lb) 1 2 2 3

COMPRESSOR

Type Scroll Semi-hermetic_{reciprocating}

Qty...Model 1...SR_75 1...ZR_94 1...ZR108 1...06DF537††

Oil Charge (oz) 88 90 110 128

No. Cylinders N/A 6

Speed (rpm) 3500 1750

OUTDOOR FANS

Qty...Rpm 1…1100 2…1100 2…1075

Diameter (in.) 26 22 26

Nominal Hp 3_/₄ 1_/₄ 1_/₂

Nominal Airflow (cfm total) 6500 11,000

Watts (total) 750 570 1460

OUTDOOR COILS

Quantity 1 2 1

Face Area (sq ft total) 24 29.2 29.2

Rows...Fins/in. 2…18 2…17 3…15

Storage Capacity (lb)** 17.3 34.2 40.1

CONTROLS

Pressurestat Settings (psig) High Pressure Open 420 428 ± 10 395 ± 20 Close 300 320 ± 20 295 ± 20 Low Pressure Open 5 7 ± 3 7 ± 3 Close 20 22 ± 5 22 ± 5

PIPING CONNECTIONS (in. ODM)

Suction 11_/₈ ₁1_/₈ ₁3_/₈ ₁5_/₈

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PHYSICAL DATA (cont) INDOOR UNITS

LEGEND

*Refer to Application Data section, pages 41, for alternate motor data. †Units are shipped without refrigerant charge.

UNIT 524A-H 090 120 180 240 300

NOMINAL CAPACITY (Tons) 71_/₂ ₁₀ ₁₅ ₂₀ ₂₅

OPERATING WEIGHT (lb)

Base Unit with TXV 385 427 713 720 1050

Plenum 175 175 225 140 180

Economizer 185 185 340 340 450

Hot Water Coil 195 195 285 285 345

Steam Coil 215 215 340 340 405

FANS

Qty...Diam. (in.) 1...15 1...15 2...15 2...15 2...18

Nominal Airflow (cfm) 3000 4000 6000 8000 10,000

Airflow Range (cfm) 2250-3750 3000-5000 4500-7500 6000-10,000 7500-12,500

Nominal Motor Hp (Standard Motor)*

208/230-1-60 2.4 — — — — 208/230-3-60 and 460-3-60 2.4 2.4 3.7 5.0 7.5 575-3-60 2.0 2.0 3.0 5.0 7.5 Motor Speed (rpm) 208/230-1-60 1725 — — — — 208/230-3-60 and 460-3-60 1725 1725 1725 1745 1745 575-3-60 1725 1725 1725 1745 1755 REFRIGERANT R-22 Operating charge (lb)

(approx per circuit)† 3.0 2.0/2.0 3.0/3.0 3.5/3.5 4.5/4.5

DIRECT-EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine-Wave Fins

Max Working Pressure (psig) 435

Face Area (sq ft) 8.33 10.01 17.67 19.88 24.86

No. of Splits 1 2 2 2 2

Split Type...Percentage — Face...50/50 Face...50/50 Face...60/40

No. of Circuits per Split 15 9 16 18 20

Rows...Fins/in. 3...15 4...15 4...15 4...15 4...15

STEAM COIL

Max Working Pressure (psig at 400 F) 175 150 150

Total Face Area (sq ft) 6.67 6.67 13.33 13.33 15.0

Rows...Fins/in. 1...9 1...9 1...10 1...10 1...10

HOT WATER COIL

Max Working Pressure (psig) 150

Total Face Area (sq ft) 6.67 6.67 13.33 13.33 15.0

Rows...Fins/in. 2...8.5 2...8.5 2...8.5 2...8.5 2...12.5 Water Volume (gal) 8.3 13.9 13.9 (ft3₎ _1.1 _1.85 _1.85 PIPING CONNECTIONS Quantity...Size (in.)

DX Coil — Suction (ODF) 1...11_/₈ _2...11_/₈ _2...15_/₈ 2...11_/₈ _2...13_/₈

DX Coil — Liquid Refrigerant (ODF) 1...5_/

8 2...5/8 2...5/8 2...5/8 2...5/8

Steam Coil, In (MPT) 1...21_/₂ _1...21_/₂ 1...21_/₂ _1...21_/₂

Steam Coil, Out (MPT) 1...11_/₂ _1...11_/₂ 1...11_/₂ _1...11_/₂

Hot Water Coil, In (MPT) 1...11_/

2 1...11/2 1...2 1...2 1...2

Hot Water Coil, Out (MPT) 1...11_/₂ _1...11_/₂ _1...2 1...2 1...2

Condensate (PVC) 1...11_/₄_{ODM/1 IDF}

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 24 x 2 4...16 x 20 x 2_{4...16 x 24 x 2} 4...16 x 20 x 2_{4...16 x 24 x 2} 4...20 x 24 x 2_{4...20 x 25 x 2}

Access Location Right or Left Side

DX — Direct Expansion

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DIMENSIONS — OUTDOOR UNITS 1-1/2 38-1/2 1-1/2

TOP

FRONT

33 35 33 38-1/2 Line & Low

Voltage Wiring Entrances 1-1/2 1-1/2 4-1/4 2-1/2 1-1/8 2-1/8 5-3/4 9-3/4 1-1/2

BOTTOM

REAR

27 24 33 35 A B D C 7/8 4 PLACES 24 1/2 10 19 3/8 4 7/8 FRONT CONTROL BOX NOTES:

1. All dimensions are in inches.

2. Recommended clearance for proper airflow (local codes or jurisdictions may prevail): Top — 60 in.

Sides — 24 in. on 3 sides; one side may have 6-in. clearance. (Control box side should have 24-in. clearance for service access.)

3. Corner Weights (lb): A = 86 B = 84 C = 92 D = 90

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DIMENSIONS — OUTDOOR UNITS (cont)

UNIT ELECTRICAL CHARACTERISTICS

ALUMINUM COIL COPPER COIL Std. Unit Wt. Corner W Corner X Corner Y Corner Z Center of Gravity mm [in.] Std. Unit Wt. Corner W Corner X Corner Y Corner Z Center of Gravity mm [in.] lb kg lb kg lb kg lb kg lb kg X Y lb kg lb kg lb kg lb kg lb kg X Y 575C090 208/230-3-60, 460-3-60 464 210 120 54 142 64 108 49 94 43 _[32.00]812.8 _[26.00]660.4 565 256 135 61 173 79 144 65 113 51 _[33.50]850.9 _[25.00]635.0 575C120 208/230-3-60, 460-3-60,_575-3-60 506 230 120 54 168 76 127 58 91 42 _[35.00]889.0 _[26.25]666.8 607 275 130 59 203 92 166 75 108 49 _[36.50]927.1 _[25.25]641.4 NOTES:

1. Minimum clearance (local codes or jurisdiction may prevail): a. Bottom to combustible surfaces: 0 inches.

b. Outdoor coil, for proper airflow: 36 inches one side, 12 inches the other. The side getting the greater clearance is optional.

c. Overhead: 60 inches, to assure proper outdoor fan operation. d. Between units: Control box side, 42 inches per NEC.

e. Between unit and ungrounded surfaces: Control box side, 36 inches per NEC. f. Between unit and block or concrete walls and other grounded surfaces, control

box side, 42 inches per NEC.

2. With exception of the clearance for the outdoor coil as stated in Note 1B, a remov-able fence or barricade requires no clearance.

3. Units may be installed on combustible floors made from wood or Class A, B or C roof covering material.

SERVICE VALVE CONNECTIONS Unit Suction Liquid 575C090 11_/₈ 1_/₂

575C120 13_/₈ 1_/₂

Center of Gravity. Direction of airflow. Dimensions in [ ] are in inches.

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DIMENSIONS — OUTDOOR UNITS (cont) WEIGHT DISTRIBUTION UNIT 541A WEIGHT — lb (kg) Total Operating Weight Support Point 1 2 3 4 180 ₍₃₆₄₎803 ₍₇₂₎158 ₍₁₁₀₎243 ₍₁₁₁₎244 158₍₇₂₎

NOTE: Recommended service clearances are as

follows (local codes or jurisdictions may prevail): Side (compressor) — 31_/₂_{ft (1067 mm)} Side (opposite compressor) — 3 ft (914 mm) Ends — 2 ft (616 mm)

Top — 5 ft (1524 mm) 541A180

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DIMENSIONS — INDOOR UNITS

LEGEND

TXV — Thermostatic Expansion Valve NOTES:

1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Recommended clearance: • Rear: 3″ (76 mm) • Front: 2′-6″ (.76 m) • Right Side: 2′-6″ (.76 m) • Left Side: 2′-6″ (.76 m)

• Local codes or jurisdiction may prevail. 4. Liquid piping not supplied.

5. Duct flange is factory supplied and field installed.

UNIT UNIT WEIGHT_lb 524A-H090 385

524A-H120 427

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DIMENSIONS — INDOOR UNITS (cont)

LEGEND

TXV — Thermostatic Expansion Valve NOTES:

1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Recommended clearance: • Rear: 3″ (76 mm) • Front: 2′-6″ (.76 m) • Right Side: 2′-6″ (.76 m) • Left Side: 2′-6″ (.76 m)

524A-H240 720

(17)

DIMENSIONS — INDOOR UNITS (cont) CONTROL BOX CONTROL BOX ALTERNATE ACCESS FOR FILTERS RETURN AIR OPENING ALTERNATE ACCESS FOR MOTOR/BELT LEGEND NOTES:

1. Dimensions in [ ] are in millimeters. 2. Direction of airflow.

3. Recommended clearance:

• Rear: 3″ (76.2 mm) (2′-6″ [.76 m] with electric heat accessory)

• Front: 2′-6″ (.76 m) • Right Side: 2′-6″ (.76 m) • Left Side: 2′-6″ (.76 m)

TXV — Thermostatic Expansion Valve

(18)

DIMENSIONS — INDOOR UNITS (cont)

524A-H180-300 with Electric Heater Accessory

NOTE: Dimensions in [ ] are millimeters.

UNIT SIZE A B C D E F G H J 180-240 1′-31/4″ [387.4] 4′-6 3_/ 8″ [1381.1] 25_/ 16″ [58.7] 2′-1 1_/ 4″ [641.4] 105_/ 8″ [269.9] [406.4]1′-4″ 1′-4 5_/ 16″ [414.3] 1′-6 3_/ 4″ [476.3] 1-7_/ 8″ [327.0] 300 1′-33/8″ [390.5] 5′-47_/₁₆_″ [1636.8] 21_/₁₆_″ [26.9] 2′-63_/₁₆_″ [766.8] 1-1_/₄_″ [311.2] 1′-7″ [482.6] 1′-45_/₁₆_″ [414.0] 1′-10″ [558.8] 1′-47_/₁₆_″ [417.1] 524A-H090,120 with Electric Heater Accessory

(19)

SELECTION PROCEDURE (With Example)

I DETERMINE COOLING AND HEATING LOAD

REQUIREMENTS. Given:

Total Cooling Load (TC) . . . 88,000 Btuh Sensible Heat Capacity (SHC). . . 62,000 Btuh Temperature Air Entering

Outdoor Unit (Edb) . . . 95 F Temperature Air-Entering Indoor

Unit . . . 80 F edb/67 F ewb Indoor-Air Quantity. . . 3,000 cfm External Static Pressure . . . 0.80 in. wg Heating Load at Winter Design . . . 90,000 Btuh Temperature Air Entering Indoor Unit,

Heating . . . 70 F Winter Design, Outdoor . . . 0° F Power Supply (V-Ph-Hz) . . . 230-3-60

II SELECT SYSTEM THAT SATISFIES LOAD

REQUIREMENTS.

Select heat pump systems to satisfy cooling design load requirements. Enter the Combination Ratings, Gross Capacities — Cooling tables, page 20. At outdoor unit air entering temperature of 95 F, indoor unit air entering at 3,000 cfm, and 80 edb/67 ewb, find that a 575C090 out-door unit matched with a 524A-H090 inout-door unit delivers a TC of 90,300 Btuh and SHC of 68,400 Btuh at design con-ditions. These values satisfy the cooling requirements of the examples shown.

III DETERMINE THE HEATING CAPACITY OF SELECTED SYSTEM.

Enter the Combination Ratings Net Capacities — Heating tables on page 22 for units 575C090 and 524A-H090. Under the 0° F column, read down to the 70 F indoor-air section at 3,000 cfm and find an integrated heating capacity of 47,900 Btuh. The heating requirement is 90,000 Btuh, and the unit capacity is 47,900; therefore, 42,100 Btuh of supplemental electric heat is needed.

Select an electric heater that satisfies the voltage designa-tion and the supplemental heat requirement. Refer to the Electric Heater Data — Indoor Units table, page 34. The supplemental heating load required is 42,100 Btuh. To convert Btuh to kW:

= 12.3 kW of supplemental heat required.

For the 524A-H090, the heater part no.

CAELHEAT007A00 is rated 15 kW at 240 volts. To calcu-late kW at 230 volt, use the voltage multiplier found on page 32.

15 kW x 0.918 (230 volt multiplier) = 13.8 kW at 230 volts. 15 kW x 0.918 x 3413 Btuh/kW = 46,997 Btuh at 230 volts. The output of the CAELHEAT007A00 heater de-rated for 230 volt is 46,977 Btuh which satisfies the supplemental heat requirement for this example.

IV DETERMINE FAN RPM AND BHP (BRAKE

HORSEPOWER).

At the Indoor Unit Fan Performance Data table, page 27, enter the 524A-H090 section at 3,000 cfm and move to External Static Pressure (ESP) 0.80 column. Note that the conditions require 800 rpm and 1.24 bhp.

V DETERMINE MOTOR AND DRIVE.

For the 524A-H090 unit, find the type of drive that satisfies the 800 rpm requirement in the Drive Data tables on page 42. The Medium-Static Drive table shows an rpm range of 733 to 949 which satisfies this rpm requirement for the example described.

Next, enter the Fan Motor Data tables on page 41, and find that a 208/230-3-60 standard motor has a motor hp of 2.4 which satisfies the bhp requirement for the example described. Select the standard motor and medium-static drive (option code HC or FD).

42,100 Btuh 3413 Btuh/kW

(20)

PERFORMANCE DATA INTEGRATED HEATING CAPACITIES

LEGEND

NOTES:

1. To obtain total outdoor unit power, add outdoor fan kW shown to compressor draw: 575C120 and 541A180 — 1.4 kW.

2. Ratings are without supplementary heat and are based on 70 F db air entering indoor unit. Wet-bulb temperature entering outdoor unit varies with dry bulb; at 47 F db, wb is 43 F; at 17 F db, wb is 15 F.

COMBINATION RATINGS

GROSS CAPACITIES — COOLING OUTDOOR UNIT INDOOR UNIT 524A-H AIRFLOW (Cfm)

TEMPERATURE OF AIR ENTERING OUTDOOR UNIT (F db)

–10 0 10 17 20

Cap. kW Cap. kW Cap. kW Cap. kW Cap. kW 575B072 090 2,400 28.3 3.7 33.7 3.9 39.5 4.2 43.6 4.4 44.9 4.5 575C090 090 3,000 39.6 5.1 47.9 5.5 54.0 5.7 56.4 5.9 58.0 6.0 575C120 120 4,000 38.6 5.5 48.5 6.0 57.0 6.2 63.0 6.4 65.0 6.5 541A180 180 6,000 56.3 7.5 72.3 8.3 89.0 9.2 101.0 9.8 105.0 10.1 575C120 (2) 240 8,000 77.2 11.0 97.0 11.9 114.0 12.5 126.0 12.9 130.0 13.0 575C120; 541A180 300 10,000 93.2 13.3 118.6 14.6 143.3 15.8 161.0 16.6 166.9 17.0 OUTDOOR UNIT INDOOR UNIT 524A-H AIRFLOW (Cfm)

TEMPERATURE OF AIR ENTERING OUTDOOR UNIT (F db)

30 40 47 50 60

Cap. kW Cap. kW Cap. kW Cap. kW Cap. kW 575B072 090 2,400 49.6 4.8 62.0 5.1 70.6 5.4 73.1 5.5 81.4 5.8 575C090 090 3,000 63.5 6.3 85.8 7.0 92.9 7.4 99.2 7.7 120.0 8.7 575C120 120 4,000 71.9 6.8 90.0 7.3 103.0 7.6 106.0 7.7 119.0 8.2 541A180 180 6,000 120.0 11.1 154.0 12.2 177.0 13.0 184.0 13.4 208.0 14.5 575C120 (2) 240 8,000 143.8 13.6 180.0 14.5 206.0 15.1 212.0 15.4 238.0 16.3 575C120; 541A180 300 10,000 188.3 18.3 239.4 19.9 274.7 21.1 284.5 21.6 320.8 23.2

Cap. — Integrated Heating Capacity (1000 Btuh) — includes indoor-fan motor heat and effects of defrost. kW — Total Compressor Motor Power Input

575B072/524A-H090 Temp (F)

Air Ent Outdoor Coil

(Edb)

Indoor Entering Air — Cfm/BF

1800/0.07 2400/0.09 3000/0.11 Indoor Entering Air — Ewb (F)

59 63 67 71 59 63 67 71 59 63 67 71 65 TC 70.7 74.9 79.9 85.2 76.1 79.0 83.8 89.0 80.7 81.9 86.3 91.4 SHC 67.8 60.5 52.7 44.6 76.1 69.7 59.8 49.6 80.7 77.5 66.4 54.1 kW 3.90 3.96 4.04 4.11 3.98 4.02 4.09 4.17 4.04 4.06 4.13 4.21 75 TC 68.8 72.8 77.7 82.9 74.2 76.7 81.4 86.5 78.7 79.6 83.8 88.8 SHC 66.6 59.5 51.7 43.7 74.2 68.7 58.9 48.7 78.7 76.3 65.5 53.2 kW 4.36 4.42 4.51 4.59 4.45 4.49 4.57 4.65 4.52 4.54 4.60 4.69 85 TC 66.7 70.5 75.3 80.3 72.2 74.2 78.8 83.8 76.5 77.1 81.0 86.0 SHC 65.3 58.5 50.7 42.8 72.2 67.6 57.9 47.7 76.5 75.0 64.5 52.2 kW 4.87 4.94 5.02 5.12 4.97 5.01 5.09 5.18 5.04 5.06 5.13 5.22 95 TC 64.5 68.0 72.7 77.6 70.0 71.6 76.0 80.9 74.1 74.5 78.1 82.9 SHC 63.9 57.3 49.6 41.7 70.0 66.3 56.8 46.7 74.1 73.4 63.4 51.2 kW 5.42 5.49 5.59 5.69 5.53 5.57 5.65 5.75 5.62 5.62 5.70 5.79 105 TC 62.2 65.4 69.0 74.7 67.7 68.8 72.9 77.8 71.6 71.7 75.0 79.7 SHC 62.1 56.1 48.5 40.6 67.7 64.9 55.7 45.6 71.6 71.4 62.3 50.2 kW 6.02 6.09 6.19 6.31 6.14 6.17 6.27 6.38 6.24 6.24 6.31 6.42 115 TC 59.8 62.5 66.8 71.5 65.1 65.9 69.7 74.4 68.9 68.9 71.6 76.2 SHC 59.8 54.8 47.2 39.4 65.1 63.4 54.5 44.4 68.9 68.9 61.0 49.1 kW 6.67 6.74 6.85 6.97 6.81 6.83 6.93 7.05 6.90 6.90 6.98 7.09 125 TC 57.3 59.4 63.6 68.2 62.4 62.8 66.2 70.8 65.9 65.9 68.1 72.4 SHC 57.3 53.4 46.0 38.2 62.4 61.7 53.2 43.2 65.9 65.9 59.6 47.9 kW 7.36 7.42 7.55 7.68 7.52 7.52 7.63 7.76 7.62 7.62 7.68 7.81 575C090/524A-H090 Temp (F) Air Ent Outdoor Coil (Edb)

57 62 67 72 57 62 67 72 57 62 67 72 85 TC 79.2 82.8 89.8 97.4 86.3 87.5 93.9 101.0 91.1 91.3 96.5 104.0 SHC 79.2 72.9 61.1 49.0 86.3 83.8 69.8 54.3 91.1 91.2 77.7 59.2 kW 6.18 6.23 6.35 6.47 6.29 6.31 6.41 6.53 6.37 6.37 6.46 6.58 95 TC 76.8 79.8 86.5 93.9 83.5 84.3 90.3 97.7 88.2 88.2 92.8 100.0 SHC 76.8 71.4 59.8 47.7 83.5 82.0 68.4 53.0 88.2 88.2 76.3 57.9 kW 6.89 6.95 7.07 7.20 7.01 7.04 7.14 7.28 7.10 7.10 7.19 7.33 100 TC 75.5 78.2 84.8 92.1 82.0 82.7 88.5 95.8 86.6 86.7 90.9 98.1 SHC 75.5 70.6 59.0 47.0 82.0 80.9 67.7 52.3 86.6 86.7 75.5 57.2 kW 7.28 7.33 7.46 7.60 7.40 7.42 7.54 7.67 7.49 7.50 7.58 7.72 105 TC 74.2 76.6 83.1 90.2 80.6 81.0 86.6 93.8 85.0 85.1 89.0 95.4 SHC 74.2 69.8 58.3 46.3 80.6 79.9 67.0 51.6 85.0 85.1 74.7 56.2 kW 7.68 7.73 7.86 8.01 7.81 7.82 7.94 8.09 7.91 7.91 7.99 8.11 115 TC 71.4 72.8 78.9 85.8 77.5 77.2 82.2 89.0 81.6 81.3 84.4 91.1 SHC 71.4 67.9 56.6 44.7 77.5 77.1 65.2 50.0 81.6 81.3 72.9 54.9 kW 8.53 8.55 8.70 8.86 8.67 8.65 8.78 8.94 8.77 8.76 8.83 8.99 125 TC 68.1 69.2 74.5 81.0 73.7 73.8 77.4 83.9 77.6 77.7 79.5 85.8 SHC 68.1 66.0 54.9 43.0 73.7 73.8 63.3 48.2 77.6 77.7 70.8 53.2 kW 9.42 9.45 9.60 9.78 9.58 9.59 9.68 9.86 9.69 9.69 9.74 9.91 LEGEND NOTES:

1. Direct interpolation is permissible. Do not extrapolate. 2. SHC is based on 80 F db air entering indoor coil.

Below 80 F db, subtract (Corr Factor x Cfm) from SHC. Above 80 F db, add (Corr Factor x Cfm) to SHC.

Interpolation is permissible.

Correction Factor = 1.10 x (1 – BF) x (db – 80) 3. Formulas:

where hewb = enthalpy of air entering indoor coil

4. Capacities are based on 25 actual ft (40 equivalent ft) of inter-connecting piping sized to the outdoor unit field connections. (Equivalent length is equal to the actual length plus a 50% allowance for fitting losses.)

BF — Bypass Factor Edb — Entering Dry Bulb Ewb — Entering Wet Bulb

kW — Compressor Motor Power Input, Total Ldb — Leaving Dry Bulb

Lwb — Leaving Wet Bulb

SHC — Sensible Heat Capacity, Gross (1000 Btuh) TC — Total Capacity, Gross (1000 Btuh)

BYPASS FACTOR

ENTERING-AIR DRY-BULB TEMP (F) 79 78 77 76 75 under 75 81 82 83 84 85 over 85 Correction Factor 0.03 1.07 2.13 3.20 4.27 5.34 Use formula given. 0.06 1.03 2.07 3.10 4.14 5.17 0.09 1.00 2.00 3.00 4.00 5.01 0.12 0.97 1.94 2.90 3.87 4.84 0.15 0.94 1.87 2.81 3.74 4.68

tldb = tedb – sensible heat capacity (Btuh) 1.1 x cfm tlwb = wet-bulb temperature corresponding to

enthalpy of air leaving indoor coil (hlwb) hlwb = hewb – total capacity (Btuh)_{4.5 x cfm}

(21)

PERFORMANCE DATA (cont) COMBINATION RATINGS (cont)

GROSS CAPACITIES — COOLING (cont)

LEGEND

NOTES:

1. Direct interpolation is permissible. Do not extrapolate. 2. SHC is based on 80 F db air entering indoor coil.

Below 80 F db, subtract (Corr Factor x Cfm) from SHC. Above 80 F db, add (Corr Factor x Cfm) to SHC.

Interpolation is permissible.

Correction Factor = 1.10 x (1 – BF) x (db – 80)

3. Formulas:

where hewb = enthalpy of air entering indoor coil

4. Capacities are based on 25 actual ft (40 equivalent ft) of interconnecting piping sized to the outdoor unit field connections. (Equivalent length is equal to the actual length plus a 50% allowance for fitting losses.)

575C120/524A-H120 Temp (F)

Air Ent Outdoor Coil (Edb)

62 67 72 62 67 72 62 67 72 80 TC 106.0 113.0 122.0 111.0 117.0 126.0 116.0 120.0 128.0 SHC 96.6 80.2 63.1 110.0 92.3 70.4 116.0 103.0 77.4 kW 7.61 7.85 8.12 7.79 7.98 8.25 7.95 8.07 8.33 85 TC 104.0 111.0 120.0 109.0 115.0 124.0 115.0 118.0 126.0 SHC 95.7 79.4 62.3 109.0 91.4 69.7 115.0 102.0 76.7 kW 7.93 8.16 8.44 8.11 8.29 8.56 8.27 8.38 8.64 95 TC 100.0 107.0 115.0 106.0 111.0 119.0 111.0 114.0 121.0 SHC 93.8 77.7 60.8 106.0 89.7 68.1 111.0 101.0 75.2 kW 8.57 8.79 9.07 8.75 8.92 9.2.0 8.91 9.01 9.28 100 TC 98.0 105.0 113.0 104.0 109.0 116.0 109.0 111.0 119.0 SHC 92.7 76.8 59.9 104.0 88.8 67.3 109.0 99.4 74.3 kW 8.93 9.14 9.42 9.11 9.27 9.54 9.27 9.36 9.62 105 TC 96.0 103.0 110.0 102.0 106.0 114.0 106.0 109.0 116.0 SHC 91.6 75.9 59.0 102.0 87.8 66.4 106.0 98.4 73.4 kW 9.29 9.50 9.77 9.47 9.62 9.88 9.63 9.70 9.96 115 TC 91.8 97.9 105.0 97.6 101.0 109.0 102.0 104.0 110.0 SHC 89.3 74.0 57.3 97.6 85.9 64.6 102.0 96.2 71.7 kW 10.00 10.20 10.50 10.20 10.30 10.60 10.30 10.40 10.60 125 TC 87.5 92.9 100.0 93.3 96.0 103.0 97.4 98.3 104.0 SHC 86.7 72.1 55.3 93.3 83.8 62.8 97.4 93.7 69.8 kW 10.80 11.00 11.20 11.00 11.10 11.30 11.10 11.10 11.40 541A180/524A-H180 Temp (F) Air Ent Outdoor Coil (Edb)

62 67 72 62 67 72 62 67 72 80 TC 172.0 186.0 201.0 181.0 194.0 209.0 190.0 199.0 214.0 SHC 152.0 127.0 101.0 175.0 146.0 113.0 190.0 163.0 123.0 kW 13.7 14.2 14.7 14.1 14.5 15.0 14.3 14.7 15.1 85 TC 168.0 182.0 197.0 178.0 190.0 205.0 186.0 195.0 209.0 SHC 150.0 125.0 100.0 173.0 144.0 111.0 186.0 161.0 122.0 kW 14.3 14.9 15.4 14.7 15.1 15.7 15.0 15.3 15.8 95 TC 161.0 174.0 189.0 171.0 182.0 196.0 179.0 186.0 200.0 SHC 146.0 122.0 96.9 169.0 141.0 108.0 179.0 158.0 119.0 kW 15.5 16.1 16.8 16.0 16.5 17.1 16.4 16.7 17.2 100 TC 158.0 170.0 184.0 167.0 177.0 191.0 176.0 182.0 195.0 SHC 145.0 121.0 95.3 166.0 139.0 107.0 176.0 156.0 117.0 kW 16.1 16.8 17.4 16.6 17.1 17.7 17.0 17.3 17.9 105 TC 154.0 166.0 180.0 163.0 173.0 187.0 172.0 178.0 191.0 SHC 143.0 119.0 93.8 163.0 137.0 105.0 172.0 154.0 116.0 kW 16.7 17.4 18.1 17.2 17.7 18.4 17.7 18.0 18.6 115 TC 147.0 158.0 172.0 156.0 165.0 177.0 165.0 169.0 181.0 SHC 139.0 116.0 90.7 156.0 134.0 102.0 165.0 151.0 113.0 kW 17.9 18.6 19.4 18.5 19.0 19.8 19.0 19.2 20.0 125 TC 139.0 150.0 163.0 149.0 156.0 168.0 157.0 160.0 171.0 SHC 135.0 112.0 87.5 149.0 131.0 98.8 157.0 147.0 109.0 kW 19.1 19.8 20.7 19.8 20.2 21.1 20.3 20.5 21.3 BF — Bypass Factor Edb — Entering Dry Bulb Ewb — Entering Wet Bulb

kW — Compressor Motor Power Input, Total Ldb — Leaving Dry Bulb

Lwb — Leaving Wet Bulb

SHC — Sensible Heat Capacity, Gross (1000 Btuh) TC — Total Capacity, Gross (1000 Btuh)

BYPASS FACTOR

ENTERING-AIR DRY-BULB TEMP (F) 79 78 77 76 75 under 75 81 82 83 84 85 over 85 Correction Factor 0.03 1.07 2.13 3.20 4.27 5.34 Use formula given. 0.06 1.03 2.07 3.10 4.14 5.17 0.09 1.00 2.00 3.00 4.00 5.01 0.12 0.97 1.94 2.90 3.87 4.84 0.15 0.94 1.87 2.81 3.74 4.68 (2) 575C120/524A-H240 Temp (F) Air Ent Outdoor Coil (Edb)

6,000/0.05 8,000/0.07 10,000/0.08 Indoor Entering Air — Ewb (F)

62 67 72 62 67 72 62 67 72 80 TC 212.0 226.0 244.0 222.0 234.0 252.0 232.0 240.0 256.0 SHC 193.2 160.4 126.2 220.0 184.6 140.8 232.0 206.0 154.8 kW 15.2 15.7 16.2 15.6 16.0 16.5 15.9 16.1 16.7 85 TC 208.0 222.0 240.0 218.0 230.0 248.0 230.0 236.0 252.0 SHC 191.4 158.8 124.6 218.0 182.8 139.4 230.0 204.0 153.4 kW 15.9 16.3 16.9 16.2 16.6 17.1 16.5 16.8 17.3 95 TC 200.0 214.0 230.0 212.0 222.0 238.0 222.0 228.0 242.0 SHC 187.6 155.4 121.6 212.0 179.4 136.2 222.0 202.0 150.4 kW 17.1 17.6 18.1 17.5 17.8 18.4 17.8 18.0 18.6 100 TC 196.0 210.0 226.0 208.0 218.0 232.0 218.0 222.0 238.0 SHC 185.4 153.6 119.8 208.0 177.6 134.6 218.0 198.8 148.6 kW 17.9 18.3 18.8 18.2 18.5 19.1 18.5 18.7 19.2 105 TC 192.0 206.0 220.0 204.0 212.0 228.0 212.0 218.0 232.0 SHC 183.2 151.8 118.0 204.0 175.6 132.8 212.0 196.8 146.8 kW 18.6 19.0 19.5 18.9 19.2 19.8 19.3 19.4 19.9 115 TC 183.6 195.8 210.0 195.2 202.0 218.0 204.0 208.0 220.0 SHC 178.6 148.0 114.6 195.2 171.8 129.2 204.0 192.4 143.4 kW 20.0 20.4 21.0 20.4 20.6 21.2 20.6 20.8 21.2 125 TC 175.0 185.8 200.0 186.6 192.0 206.0 194.8 196.6 208.0 SHC 173.4 144.2 110.6 186.6 167.6 125.6 194.8 187.4 139.6 kW 21.6 22.0 22.4 22.0 22.2 22.6 22.2 22.2 22.8 575C120, 541A180/524A-H300 Temp (F) Air Ent Outdoor Coil (Edb)

7,500/0.04 10,000/0.06 12,500/0.08 Indoor Entering Air — Ewb (F)

62 67 72 62 67 72 62 67 72 80 TC 273.9 294.5 318.2 287.7 306.3 330.0 301.4 314.2 336.9 SHC 245.4 204.5 162.0 281.3 235.2 181.0 302.0 262.6 197.8 kW 21.1 21.9 22.6 21.7 22.3 23.1 22.1 22.6 23.2 85 TC 268.0 288.6 312.3 282.7 300.4 324.1 296.5 308.3 330.0 SHC 242.6 201.8 160.2 278.4 232.4 178.4 297.1 259.6 196.1 kW 22.1 22.9 23.7 22.6 23.2 24.1 23.1 23.5 24.3 95 TC 257.1 276.8 299.5 272.9 288.6 310.3 285.7 295.5 316.2 SHC 236.7 197.1 155.7 271.5 227.7 173.8 286.2 255.7 191.7 kW 23.9 24.7 25.7 24.6 25.2 26.1 25.1 25.5 26.3 100 TC 252.2 270.9 292.6 267.0 281.8 302.4 280.8 288.6 309.3 SHC 234.7 195.3 153.2 266.5 224.9 172.1 281.3 252.1 188.8 kW 24.8 25.7 26.6 25.5 26.2 27.0 26.1 26.5 27.3 105 TC 246.3 265.0 285.7 261.1 274.8 296.5 273.9 282.7 302.4 SHC 231.6 192.4 150.8 261.6 221.9 169.2 274.4 249.2 187.0 kW 25.8 26.7 27.7 26.5 27.1 28.1 27.1 27.5 28.3 115 TC 235.3 252.1 272.9 249.9 262.0 281.8 263.0 268.9 286.7 SHC 225.4 187.6 146.1 250.3 217.1 164.5 263.5 244.0 182.3 kW 27.7 28.6 29.7 28.5 29.1 30.2 29.1 29.4 30.4 125 TC 223.2 239.3 259.1 238.7 248.3 267.0 250.6 254.5 270.9 SHC 218.9 181.7 141.0 239.2 212.0 159.5 251.1 237.6 176.5 kW 29.7 30.6 31.7 30.6 31.1 32.1 31.2 31.4 32.4

tldb = tedb – sensible heat capacity (Btuh) 1.1 x cfm tlwb = wet-bulb temperature corresponding to

enthalpy of air leaving indoor coil (hlwb) hlwb = hewb – total capacity (Btuh)

(22)

NET CAPACITIES — HEATING

LEGEND 575B072/524A-H090 Temp (F) Air Ent Indoor Coil Indoor Airflow (Cfm)

Air Temp Entering Outdoor Coil (F)

–10 0 10 17 20 30 40 47 50 60 60 1800 TH 30.8 36.7 43.2 47.7 49.7 56.5 64.7 70.4 72.8 81.0 THI 28.4 33.7 39.5 43.5 44.9 49.5 61.8 70.4 72.8 81.0 kW 3.43 3.70 3.99 4.19 4.28 4.58 4.96 5.22 5.34 5.71 2400 TH 31.6 37.5 44.1 48.7 50.8 57.6 66.1 72.1 74.6 83.1 THI 29.1 34.5 40.3 44.4 45.8 50.5 63.2 72.1 74.6 83.1 kW 3.35 3.58 3.82 3.99 4.06 4.30 4.61 4.82 4.91 5.22 3000 TH 32.3 38.2 44.9 49.5 51.6 58.5 67.1 73.2 75.8 84.5 THI 29.7 35.2 41.0 45.1 46.5 51.2 64.1 73.2 75.8 84.5 kW 3.30 3.50 3.71 3.85 3.92 4.12 4.39 4.58 4.65 4.92 65 1800 TH 30.4 36.2 42.7 47.2 49.2 55.9 64.1 69.8 72.2 80.3 THI 27.9 33.3 39.0 43.1 44.4 49.0 61.2 69.8 72.2 80.3 kW 3.59 3.88 4.19 4.41 4.50 4.82 5.22 5.50 5.62 6.02 2400 TH 31.2 37.1 43.6 48.2 50.3 57.1 65.5 71.4 73.9 82.2 THI 28.7 34.1 39.9 44.0 45.4 50.0 62.6 71.4 73.9 82.2 kW 3.51 3.76 4.02 4.20 4.28 4.54 4.86 5.09 5.19 5.51 3000 TH 31.9 37.8 44.4 49.1 51.1 58.0 66.5 72.5 75.1 83.6 THI 29.3 34.8 40.6 44.7 46.1 50.8 63.6 72.5 75.1 83.6 kW 3.46 3.68 3.91 4.07 4.14 4.36 4.64 4.84 4.92 5.20 70 1800 TH 29.9 35.7 42.2 46.7 48.7 55.4 63.5 69.1 71.5 79.6 THI 27.5 32.9 38.6 42.6 44.0 48.5 60.6 69.1 71.5 79.6 kW 3.75 4.06 4.39 4.63 4.73 5.07 5.49 5.78 5.91 6.33 2400 TH 30.7 36.6 43.2 47.8 49.8 56.6 64.8 70.6 73.1 81.4 THI 28.3 33.7 39.5 43.6 44.9 49.6 62.0 70.6 73.1 81.4 kW 3.67 3.94 4.22 4.42 4.50 4.78 5.12 5.36 5.47 5.81 3000 TH 31.4 37.3 44.0 48.6 50.7 57.5 65.9 71.8 74.4 82.8 THI 28.9 34.4 40.2 44.3 45.7 50.4 63.0 71.8 74.4 82.8 kW 3.61 3.87 4.11 4.29 4.36 4.60 4.89 5.10 5.19 5.48 75 1800 TH 29.4 35.2 41.7 46.2 48.2 54.8 62.8 68.4 70.7 78.7 THI 27.0 32.4 38.1 42.1 43.5 48.0 60.0 68.4 70.7 78.7 kW 3.90 4.24 4.60 4.85 4.96 5.32 5.76 6.07 6.20 6.65 2400 TH 30.2 36.1 42.7 47.2 49.3 56.0 64.3 70.1 72.6 80.8 THI 27.8 33.2 39.0 43.1 44.5 49.1 61.4 70.1 72.6 80.8 kW 3.82 4.12 4.43 4.64 4.73 5.03 5.40 5.66 5.76 6.13 3000 TH 30.9 36.8 43.5 48.1 50.1 56.9 65.3 71.2 73.7 82.1 THI 28.4 33.9 39.7 43.8 45.2 49.9 62.4 71.2 73.7 82.1 kW 3.78 4.05 4.32 4.51 4.59 4.85 5.16 5.38 5.48 5.79 575C090/524A-H090 Temp (F) Air Ent Indoor Coil Indoor Airflow (Cfm)

–20 –10 0 10 17 30 40 47 50 60 60 2250 TH 35.2 44.0 52.8 59.6 62.5 72.6 85.8 92.8 99.1 120.0 THI 32.4 40.5 48.5 54.3 56.7 63.6 85.8 92.8 99.1 120.0 kW 4.44 4.82 5.19 5.48 5.60 6.10 6.80 7.21 7.56 8.71 3000 TH 36.5 45.4 54.4 61.1 64.1 74.3 88.0 94.1 100.0 120.0 THI 33.6 41.8 49.9 55.7 58.1 65.1 88.0 94.1 100.0 120.0 kW 4.33 4.65 4.95 5.18 5.30 5.72 6.34 6.60 6.89 7.89 3750 TH 37.5 46.4 55.5 62.2 65.2 75.5 88.8 93.9 99.1 117.0 THI 34.5 42.7 50.9 56.7 59.1 66.2 88.8 93.9 99.1 117.0 kW 4.26 4.53 4.80 5.02 5.12 5.50 6.02 6.21 6.44 7.19 65 2250 TH 33.9 42.8 51.7 58.5 61.4 71.7 84.6 91.6 98.4 121.0 THI 31.2 39.4 47.5 53.4 55.7 62.8 84.6 91.6 98.4 121.0 kW 4.62 5.04 5.44 5.76 5.89 6.40 7.13 7.55 7.96 9.31 3000 TH 35.2 44.3 53.3 60.2 63.2 73.4 86.9 93.4 99.2 118.0 THI 32.4 40.7 49.0 54.9 57.3 64.3 86.9 93.4 99.2 118.0 kW 4.52 4.87 5.21 5.45 5.56 6.01 6.65 6.95 7.23 8.19 3750 TH 36.2 45.4 54.5 61.4 64.4 74.6 88.5 94.2 100.0 120.0 THI 33.3 41.7 50.0 56.0 58.4 65.4 88.5 94.2 100.0 120.0 kW 4.45 4.77 5.06 5.27 5.38 5.78 6.37 6.59 6.86 7.78 70 2250 TH 32.4 41.5 50.6 57.4 60.3 70.7 83.4 90.4 97.4 121.0 THI 29.9 38.2 46.4 52.4 54.7 61.9 83.4 90.4 97.4 121.0 kW 4.80 5.26 5.70 6.04 6.18 6.71 7.46 7.91 8.38 9.97 3000 TH 33.8 43.0 52.2 59.2 62.1 72.5 85.8 92.9 99.2 120.0 THI 31.1 39.6 47.9 54.0 56.4 63.5 85.8 92.9 99.2 120.0 kW 4.71 5.10 5.47 5.74 5.85 6.31 6.97 7.35 7.66 8.71 3750 TH 34.8 44.1 53.4 60.4 63.4 73.8 87.2 93.9 99.1 116.0 THI 32.1 40.6 49.0 55.1 57.5 64.6 87.2 93.9 99.1 116.0 kW 4.65 5.00 5.32 5.55 5.65 6.07 6.68 6.96 7.20 8.00 75 2250 TH 30.8 40.1 49.3 56.2 59.2 69.5 82.3 89.1 96.1 119.0 THI 28.3 36.9 45.2 51.3 53.7 60.9 82.3 89.1 96.1 119.0 kW 4.97 5.47 5.95 6.32 6.47 7.03 7.81 8.27 8.76 10.40 3000 TH 32.2 41.7 51.0 58.0 61.0 71.5 84.6 91.7 98.5 121.0 THI 29.6 38.3 46.8 52.9 55.3 62.7 84.6 91.7 98.5 121.0 kW 4.88 5.32 5.73 6.02 6.15 6.61 7.29 7.69 8.06 9.30 3750 TH 33.3 42.8 52.2 59.3 62.3 72.9 86.1 93.3 99.5 120.0 THI 30.6 39.4 47.9 54.1 56.5 63.9 86.1 93.3 99.5 120.0 kW 4.83 5.23 5.58 5.84 5.95 6.38 6.99 7.36 7.63 8.55

kW — Compressor Motor Power Input (Total) TH — Total Heating Capacity (1000 Btuh) THI — Integrated Heating Capacity (1000 Btuh)

(23)

NET CAPACITIES — HEATING (cont)

LEGEND 575C120/524A-H120 Temp (F) Air Ent Indoor Coil Indoor Airflow (Cfm)

–10 0 10 17 20 30 40 47 50 60 60 3000 TH 44.8 54.0 63.1 69.5 72.5 82.4 94.3 103.0 106.0 118.0 THI 41.2 49.7 57.7 63.4 65.4 72.2 90.1 103.0 106.0 118.0 kW 5.29 5.62 5.89 6.08 6.18 6.52 7.02 7.37 7.52 8.03 4000 TH 46.7 55.7 64.9 71.3 74.4 84.6 96.9 105.0 109.0 121.0 THI 43.0 51.3 59.4 65.0 67.1 74.1 92.5 105.0 109.0 121.0 kW 5.20 5.45 5.67 5.82 5.91 6.20 6.67 7.00 7.14 7.60 5000 TH 48.1 56.9 66.2 72.7 75.8 86.1 98.5 107.0 111.0 123.0 THI 44.3 52.4 60.6 66.3 68.4 75.4 94.1 107.0 111.0 123.0 kW 5.13 5.34 5.52 5.65 5.73 6.01 6.46 6.77 6.90 7.35 65 3000 TH 42.4 52.5 61.8 68.4 71.3 81.1 93.0 101.0 105.0 117.0 THI 39.0 48.3 56.6 62.3 64.4 71.1 88.8 101.0 105.0 117.0 kW 5.43 5.86 6.17 6.38 6.48 6.82 7.32 7.66 7.81 8.31 4000 TH 44.6 54.5 63.8 70.2 73.3 83.4 95.6 104.0 108.0 120.0 THI 41.0 50.1 58.3 64.0 66.1 73.1 91.4 104.0 108.0 120.0 kW 5.37 5.72 5.95 6.12 6.21 6.50 6.96 7.28 7.42 7.87 5000 TH 46.2 55.9 65.1 71.6 74.7 85.0 97.4 106.0 110.0 122.0 THI 42.5 51.4 59.6 65.3 67.4 74.5 93.0 106.0 110.0 122.0 kW 5.32 5.61 5.81 5.95 6.03 6.30 6.74 7.05 7.18 7.62 70 3000 TH 39.7 50.5 60.2 67.0 69.9 79.7 91.4 99.6 103.0 115.0 THI 36.5 46.4 55.0 61.0 63.1 69.8 87.4 99.6 103.0 115.0 kW 5.53 6.07 6.43 6.68 6.78 7.13 7.62 7.96 8.10 8.59 4000 TH 41.9 52.7 62.3 69.1 72.1 82.1 94.2 103.0 106.0 119.0 THI 38.6 48.5 57.0 63.0 65.0 71.9 90.0 103.0 106.0 119.0 kW 5.49 5.95 6.23 6.43 6.51 6.81 7.26 7.57 7.71 8.16 5000 TH 43.5 54.2 63.8 70.6 73.6 83.7 96.0 105.0 108.0 121.0 THI 40.1 49.9 58.4 64.3 66.4 73.4 91.7 105.0 108.0 121.0 kW 5.46 5.86 6.10 6.26 6.34 6.60 7.03 7.33 7.46 7.88 75 3000 TH 36.4 48.0 58.2 65.4 68.3 78.1 89.7 97.8 101.0 113.0 THI 33.4 44.2 53.2 59.6 61.6 68.4 85.7 97.8 101.0 113.0 kW 5.58 6.23 6.66 6.97 7.08 7.44 7.93 8.27 8.41 8.90 4000 TH 38.6 50.3 60.5 67.6 70.6 80.7 92.7 101.0 105.0 117.0 THI 35.5 46.3 55.3 61.6 63.7 70.7 88.6 101.0 105.0 117.0 kW 5.56 6.14 6.49 6.73 6.82 7.13 7.56 7.86 7.99 8.42 5000 TH 40.3 51.9 62.0 69.1 72.2 82.4 94.6 103.0 107.0 119.0 THI 37.0 47.8 56.7 63.0 65.1 72.2 90.4 103.0 107.0 119.0 kW 5.54 6.07 6.36 6.57 6.65 6.92 7.33 7.61 7.74 8.15 541A180/524A-H180 Temp (F) Air Ent Indoor Coil Indoor Airflow (Cfm)

–10 0 10 17 20 30 40 47 50 60 60 4500 TH 64.4 80.9 99.0 112.0 118.0 137.0 161.0 177.0 184.0 207.0 THI 59.2 74.5 90.5 102.0 106.0 120.0 154.0 177.0 184.0 207.0 kW 7.18 7.99 8.87 9.49 9.78 10.80 12.00 12.80 13.20 14.40 6000 TH 67.3 84.1 103.0 115.0 121.0 142.0 166.0 182.0 190.0 214.0 THI 61.9 77.4 93.8 105.0 110.0 124.0 158.0 182.0 190.0 214.0 kW 7.09 7.85 8.65 9.22 9.48 10.40 11.40 12.20 12.50 13.60 7500 TH 69.7 86.7 105.0 118.0 124.0 144.0 169.0 186.0 193.0 218.0 THI 64.1 79.7 96.2 108.0 112.0 127.0 162.0 186.0 193.0 218.0 kW 7.03 7.76 8.51 9.04 9.29 10.10 11.10 11.80 12.10 13.10 65 4500 TH 61.5 78.2 96.4 109.0 115.0 135.0 158.0 174.0 181.0 205.0 THI 56.6 72.0 88.1 99.5 104.0 118.0 151.0 174.0 181.0 205.0 kW 7.37 8.22 9.14 9.79 10.10 11.10 12.30 13.20 13.60 14.80 6000 TH 64.4 81.5 100.0 113.0 119.0 139.0 163.0 180.0 187.0 211.0 THI 59.3 75.0 91.5 103.0 107.0 122.0 156.0 180.0 187.0 211.0 kW 7.29 8.08 8.93 9.53 9.80 10.70 11.80 12.60 12.90 14.10 7500 TH 66.8 84.1 103.0 116.0 122.0 142.0 167.0 184.0 191.0 215.0 THI 61.5 77.4 94.0 106.0 110.0 125.0 159.0 184.0 191.0 215.0 kW 7.23 8.00 8.80 9.36 9.61 10.50 11.50 12.20 12.50 13.60 70 4500 TH 58.2 75.3 93.6 106.0 112.0 132.0 155.0 172.0 179.0 202.0 THI 53.6 69.3 85.6 97.0 101.0 116.0 149.0 172.0 179.0 202.0 kW 7.56 8.45 9.41 10.10 10.40 11.50 12.70 13.60 14.00 15.30 6000 TH 61.2 78.6 97.3 110.0 116.0 137.0 161.0 177.0 184.0 208.0 THI 56.3 72.3 89.0 101.0 105.0 120.0 154.0 177.0 184.0 208.0 kW 7.48 8.32 9.21 9.83 10.10 11.10 12.20 13.00 13.40 14.50 7500 TH 63.7 81.2 100.0 113.0 119.0 140.0 164.0 181.0 188.0 212.0 THI 58.6 74.7 91.5 103.0 108.0 123.0 157.0 181.0 188.0 212.0 kW 7.43 8.23 9.08 9.67 9.94 10.80 11.90 12.70 13.00 14.10 75 4500 TH 54.7 72.1 90.5 103.0 109.0 129.0 153.0 169.0 176.0 199.0 THI 50.3 66.3 82.8 94.3 98.7 113.0 146.0 169.0 176.0 199.0 kW 7.75 8.68 9.68 10.40 10.70 11.80 13.10 14.10 14.50 15.80 6000 TH 57.7 75.4 94.3 108.0 114.0 134.0 158.0 175.0 182.0 206.0 THI 53.1 69.4 86.3 98.1 102.0 117.0 151.0 175.0 182.0 206.0 kW 7.68 8.55 9.48 10.10 10.40 11.40 12.60 13.50 13.80 15.00 7500 TH 60.1 78.1 97.2 111.0 117.0 137.0 161.0 178.0 186.0 210.0 THI 55.3 71.8 88.9 101.0 105.0 120.0 154.0 178.0 186.0 210.0 kW 7.63 8.47 9.36 9.98 10.30 11.20 12.30 13.10 13.40 14.50

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NET CAPACITIES — HEATING (cont)

LEGEND TWO 575C120/524A-H240 Temp (F) Air Ent Indoor Coil Indoor Airflow (Cfm)

–10 0 10 17 20 30 40 47 50 60 60 6,000 TH 89.6 108.0 126.2 139.0 145.0 164.8 188.6 206.0 212.0 236.0 THI 82.4 99.4 115.4 126.8 130.8 144.4 180.2 206.0 212.0 236.0 kW 10.6 11.2 11.8 12.2 12.4 13.0 14.0 14.7 15.0 16.1 8,000 TH 93.4 111.4 129.8 142.6 148.8 169.2 193.8 210.0 218.0 242.0 THI 86.0 102.6 118.8 130.0 134.2 148.2 185.0 210.0 218.0 242.0 kW 10.4 10.9 11.3 11.6 11.8 12.4 13.3 14.0 14.3 15.2 10,000 TH 96.2 113.8 132.4 145.4 151.6 172.2 197.0 214.0 222.0 246.0 THI 88.6 104.8 121.2 132.6 136.8 150.8 188.2 214.0 222.0 246.0 kW 10.3 10.7 11.0 11.3 11.5 12.0 12.9 13.5 13.8 14.7 65 6,000 TH 84.8 105.0 123.6 136.8 142.6 162.2 186.0 202.0 210.0 234.0 THI 78.0 96.6 113.2 124.6 128.8 142.2 177.6 202.0 210.0 234.0 kW 10.9 11.7 12.3 12.8 13.0 13.6 14.6 15.3 15.6 16.6 8,000 TH 89.2 109.0 127.6 140.4 146.6 166.8 191.2 208.0 216.0 240.0 THI 82.0 100.2 116.6 128.0 132.2 146.2 182.8 208.0 216.0 240.0 kW 10.7 11.4 11.9 12.2 12.4 13.0 13.9 14.6 14.8 15.7 10,000 TH 92.4 111.8 130.2 143.2 149.4 170.0 194.8 212.0 220.0 244.0 THI 85.0 102.8 119.2 130.6 134.8 149.0 186.0 212.0 220.0 244.0 kW 10.6 11.2 11.6 11.9 12.1 12.6 13.5 14.1 14.4 15.2 70 6,000 TH 79.4 101.0 120.4 134.0 139.8 159.4 182.8 199.2 206.0 230.0 THI 73.0 92.8 110.0 122.0 126.2 139.6 174.8 199.2 206.0 230.0 kW 11.1 12.1 12.9 13.4 13.6 14.3 15.2 15.9 16.2 17.2 8,000 TH 83.8 105.4 124.6 138.2 144.2 164.2 188.4 206.0 212.0 238.0 THI 77.2 97.0 114.0 126.0 130.0 143.8 180.0 206.0 212.0 238.0 kW 11.0 11.9 12.5 12.9 13.0 13.6 14.5 15.1 15.4 16.3 10,000 TH 87.0 108.4 127.6 141.2 147.2 167.4 192.0 210.0 216.0 242.0 THI 80.2 99.8 116.8 128.6 132.8 146.8 183.4 210.0 216.0 242.0 kW 10.9 11.7 12.2 12.5 12.7 13.2 14.1 14.7 14.9 15.8 75 6,000 TH 72.8 96.0 116.4 130.8 136.6 156.2 179.4 195.6 202.0 226.0 THI 66.8 88.4 106.4 119.2 123.2 136.8 171.4 195.6 202.0 226.0 kW 11.2 12.5 13.3 13.9 14.2 14.9 15.9 16.5 16.8 17.8 8,000 TH 77.2 100.6 121.0 135.2 141.2 161.4 185.4 202.0 210.0 234.0 THI 71.0 92.6 110.6 123.2 127.4 141.4 177.2 202.0 210.0 234.0 kW 11.1 12.3 13.0 13.5 13.6 14.3 15.1 15.7 16.0 16.8 10,000 TH 80.6 103.8 124.0 138.2 144.4 164.8 189.2 206.0 214.0 238.0 THI 74.0 95.6 113.4 126.0 130.2 144.4 180.8 206.0 214.0 238.0 kW 11.1 12.1 12.7 13.1 13.3 13.8 14.7 15.2 15.5 16.3 575C120/541A180/524A-H300 Temp (F) Air Ent Indoor Coil Indoor Airflow (Cfm)

–10 0 10 17 20 30 40 47 50 60 60 7,500 TH 107.3 132.5 159.1 178.1 187.0 215.3 250.5 274.7 284.5 318.8 THI 98.6 122.0 145.5 162.3 168.2 188.6 239.5 274.7 284.5 318.8 kW 12.8 13.9 15.1 15.9 16.3 17.7 19.5 20.7 21.2 23.0 10,000 TH 112.0 137.3 164.8 182.9 191.8 222.3 257.9 281.5 293.3 328.6 THI 103.0 126.4 150.4 166.9 173.8 194.4 245.8 281.5 293.3 328.6 kW 12.6 13.6 14.7 15.4 15.8 17.0 18.5 19.7 20.1 21.7 12,500 TH 115.7 141.0 168.1 187.2 196.1 225.8 262.4 287.4 298.2 334.5 THI 106.5 129.7 153.9 171.1 177.0 198.6 251.2 287.4 298.2 334.5 kW 12.4 13.4 14.4 15.0 15.4 16.5 18.0 19.0 19.5 21.0 65 7,500 TH 102.1 128.4 155.3 174.1 182.9 212.1 246.3 269.8 280.6 315.9 THI 93.9 118.1 142.1 158.8 165.3 185.6 235.3 269.8 280.6 315.9 kW 13.1 14.4 15.7 16.6 17.0 18.4 20.1 21.4 21.9 23.7 10,000 TH 107.1 133.6 160.8 179.8 188.7 218.2 253.7 278.6 289.4 324.7 THI 98.5 122.9 147.1 163.9 169.9 191.4 242.7 278.6 289.4 324.7 kW 12.9 14.1 15.2 16.0 16.4 17.6 19.2 20.4 20.8 22.5 12,500 TH 111.0 137.5 165.0 184.1 193.0 222.7 259.4 284.5 295.3 330.6 THI 102.2 126.5 150.8 168.1 174.1 195.8 247.2 284.5 295.3 330.6 kW 12.8 13.9 15.0 15.7 16.0 17.2 18.7 19.7 20.2 21.8 70 7,500 TH 96.2 123.5 151.0 169.8 178.5 207.7 241.8 266.4 276.6 310.9 THI 88.5 113.6 138.0 155.1 161.1 182.3 231.9 266.4 276.6 310.9 kW 13.4 14.9 16.2 17.2 17.6 19.1 20.8 22.1 22.6 24.5 10,000 TH 101.3 128.9 156.7 175.8 184.6 215.0 250.4 274.7 284.5 320.8 THI 93.2 118.6 143.3 161.0 166.9 188.3 239.4 274.7 284.5 320.8 kW 13.3 14.6 15.8 16.6 17.0 18.3 19.9 21.1 21.6 23.2 12,500 TH 105.3 133.0 160.8 180.2 189.0 219.5 255.1 280.6 290.4 326.6 THI 96.9 122.4 147.2 164.2 171.2 192.7 244.0 280.6 290.4 326.6 kW 13.2 14.4 15.5 16.3 16.7 17.8 19.4 20.5 21.0 22.5 75 7,500 TH 89.5 117.9 146.0 165.3 174.0 203.2 238.1 261.7 271.7 306.0 THI 82.2 108.5 133.5 151.1 157.3 178.0 227.3 261.7 271.7 306.0 kW 13.6 15.2 16.7 17.8 18.2 19.7 21.5 22.9 23.5 25.3 10,000 TH 94.6 123.4 152.0 172.4 181.2 210.7 246.0 270.8 281.5 316.8 THI 87.0 113.6 139.0 156.8 162.6 184.2 235.1 270.8 281.5 316.8 kW 13.5 15.0 16.3 17.2 17.6 19.0 20.7 21.9 22.3 24.0 12,500 TH 98.6 127.7 156.3 176.8 185.7 215.3 250.8 275.7 287.4 322.7 THI 90.6 117.4 142.9 161.0 167.0 188.6 239.8 275.7 287.4 322.7 kW 13.5 14.9 16.1 16.9 17.4 18.6 20.1 21.2 21.7 23.2

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PERFORMANCE DATA (cont) INDOOR UNIT ACCESSORY COILS —

HYDRONIC HEATING CAPACITIES

LEGEND

*Based on 5 psig steam, 60 F entering-air temperature. All steam coils are non-freeze type.

†Based on 200 F entering water, 20 F water temperature drop, 60 F entering-air temperature.

NOTES:

1. Maximum operating limits for heating coils: 175 psig at 400 F.

3. See Heating Correction Factors table.

INDOOR UNIT FACTORY-SUPPLIED PRESSURE DROP — (in. wg)

INDOOR UNIT ACCESSORY COILS — HEATING CORRECTION FACTORS

NOTE: Multiply capacity given in the Hydronic Heating Capacities table

by the correction factor for conditions at which unit is actually operating. Correct leaving-air temperature using formula in Note 2 of Hydronic Heating Capacities table.

UNIT 524A-H AIRFLOW (Cfm) 1-ROW STEAM* 2-ROW HOT WATER COIL† Cap. Ldb Cap. Ldb Gpm PD 090 2,250 3,000 3,750 168 209 240 129 123 117 174 206 238 133 124 118 17.4 20.6 23.8 4.0 5.2 6.5 120 3,000 4,000 5,000 209 243 279 123 115 111 299 275 316 152 124 119 29.9 27.5 31.6 5.0 6.6 8.2 180 4,500 6,000 7,500 402 458 479 141 129 118 412 471 529 145 133 125 41.2 47.1 52.9 4.5 5.5 6.6 240 6,000 8,000 10,000 458 487 499 129 115 105 506 584 652 138 128 120 30.6 58.4 65.2 5.1 6.3 7.5 300 7,500 10,000 12,500 511 575 626 122 112 106 649 752 842 140 130 122 64.9 75.2 84.2 5.7 7.1 8.5

Cap. — Capacity (Btuh in thousands) Ldb — Leaving-Air Dry-Bulb Temp (F) PD — Pressure Drop (ft water)

2. Leaving db = ent db (F) + Capacity (Btuh) 1.1 x cfm

UNIT AIRFLOW_(Cfm) PRESSURE DROP_{(in. wg)}

524A-H 090 2,250 3,000 3,750 0.07 0.11 0.15 524A-H 120 3,000 4,000 5,000 0.11 0.17 0.23 524A-H 180 4,500 6,000 7,500 0.08 0.12 0.17 524A-H 240 6,000 8,000 10,000 0.12 0.19 0.26 524A-H 300 7,500 10,000 12,500 0.15 0.22 0.30

HOT WATER COIL Water Temp Drop (F) Ent Water Temp (F) Entering-Air Temp (F) 40 50 60 70 80 10 140 0.72 0.64 0.57 0.49 0.41 160 0.89 0.81 0.74 0.66 0.58 180 1.06 0.98 0.90 0.83 0.75 200 1.22 1.15 1.07 1.00 0.92 220 1.39 1.32 1.24 1.17 1.09 20 140 0.64 0.57 0.49 0.41 0.33 160 0.81 0.74 0.66 0.58 0.51 180 0.98 0.91 0.83 0.75 0.68 200 1.15 1.08 1.00 0.93 0.85 220 1.32 1.25 1.17 1.10 1.02 30 140 0.56 0.49 0.41 0.33 0.24 160 0.74 0.66 0.58 0.51 0.43 180 0.91 0.83 0.76 0.68 0.60 200 1.08 1.00 0.93 0.85 0.78 220 1.25 1.18 1.10 1.03 0.95 STEAM COIL Steam Pressure (psig) Entering-Air Temp (F) 40 50 60 70 80 0 1.06 0.98 0.91 0.85 0.78 2 1.09 1.02 0.95 0.89 0.82 5 1.13 1.06 1.00 0.93 0.87