Page 2 - TABLE OF CONTENTS
2 TABLE OF CONTENTS Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . 4,5ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,6Options and Accessories . . . . ...
Page 3 - sensor for; SERVICE OPTIONS; • An integral non-fused disconnect switch within the rooftop unit; INDOOR-AIR QUALITY BEGINS WITH BRYANT ROOFTOPS; Optional proportional reacting CO
3 INTEGRATED ECONOMIZERS AND OUTDOOR-AIRDAMPERS Available as options or accessories, economizers and manualoutdoor-air dampers introduce outdoor air which mixes with theconditioned air, improving indoor-air quality and often reducingenergy consumption. During a first stage call for cooling, if the o...
Page 4 - Quality Assurance; No factory-installed electric heaters; Quality Assurance
4 MODEL NUMBER NOMENCLATURE — 548F UNITS (ODS Model Number) MODEL NUMBER NOMENCLATURE — 549B AND 549C UNITS (ODS Model Number) Voltage DesignationE – 460-3-60 J – 208/230-1-60† P – 208/230-3-60 T – 575-3-60 548F E X 090 000 AA 548F – Single-PackageHeat PumpUnit X – No Heat Installed.(Field-installed...
Page 5 - ARI* CAPACITY RATINGS; Economizer
5 MODEL NUMBER NOMENCLATURE — 542J150,180 UNITS ARI* CAPACITY RATINGS 548F036-060 548F072-120 LEGEND *Air Conditioning and Refrigeration Institute. †Applies only to units with capacity of 60,000 Btuh or less. **The IPLV applies only to 2-stage cooling heat pump units. NOTES: 1. Rated in accordance w...
Page 7 - OPTIONS AND ACCESSORIES; Refer to unit guide specifications, price pages, or contact your
7 OPTIONS AND ACCESSORIES 548F036-120 *Factory-installed. †Field-installed. NOTES: 1. Refer to unit guide specifications, price pages, or contact your local representative for accessory and option package information. 2. Some options may increase product lead times. ITEM OPTION* ACCESSORY† 100% Open...
Page 11 - CONVENIENCE OUTLET
11 OPTIONS AND ACCESSORIES (cont) TR1 24 Vac COM TR 24 Vac HOT 1 2 3 4 5 EF EF1 + _ P1 T1 P T N EXH 2V 10V EXH Set Set 2V 10V 2V 10V DCV DCV FreeCool B C A D SO+ SR+ SR SO AQ1 AQ DCV MinPos Open Max N1 ECONOMI$ERIVCONTROLLER OUTSIDE AIRTEMPERATURE SENSOR LOW AMBIENTSENSOR ACTUATOR WIRINGHARNESS ECON...
Page 12 - Hinged access panels are not available on 548F units.
12 OPTIONS AND ACCESSORIES (cont) CONTROL BOX HINGED PANEL OPTION, 549B036-072 UNITS SHOWN CONTROL BOX HINGED PANEL OPTION, 549B090-120 UNITS SHOWN COMPRESSOR HINGED PANEL OPTION, 549B090-120 UNITS SHOWN COMPRESSOR HINGED PANEL OPTION, 549B036-060 UNITS SHOWN NOTE: Hinged access panels are not avail...
Page 13 - LOUVERED HAIL GUARD OPTON
13 OPTIONS AND ACCESSORIES (cont) EVAPORATOR-FAN HINGED PANEL OPTION FILTER HINGED PANEL OPTION NOTE: Hinged access panels are not available on 548F units. LOUVERED HAIL GUARD OPTON (024-120 only) 50-1290 a50-8043 a50-8059
Page 14 - PHYSICAL DATA
14 PHYSICAL DATA 548F036-072 LEGEND *Weight of 14-in. roof curb. †Single phase/three phase. NOTE: The 548F units have a loss-of-charge switch located in the liquid line. UNIT SIZE 548F 036 048 060 072 NOMINAL CAPACITY (tons) 3 4 5 6 OPERATING WEIGHT (lb) Unit 500 520 550 590 Economizer EconoMi$erIV ...
Page 16 - BASE UNIT DIMENSIONS
16 BASE UNIT DIMENSIONS 548 F03 6 -072 a50-8044 548 F
Page 18 - ACCESSORY DIMENSIONS
18 ACCESSORY DIMENSIONS TO ENSURE AIRTIGHT CONNECTION. PLACE UNIT AS CLOSE TO THIS END AS POSSIBLE TO ENSURE AIRTIGHT CONNECTION. PLACE UNIT AS CLOSE TO THIS END AS POSSIBLE ROOF CURB ACCESSORY A UNIT SIZE CRRFCURB001A00 1 ′ -2 ″ [356] 548F036-072 CRRFCURB002A00 2 ′ -0 ″ [610] NOTES: 1. Roof curb ac...
Page 20 - SELECTION PROCEDURE (WITH 548F048 EXAMPLE)
20 SELECTION PROCEDURE (WITH 548F048 EXAMPLE) I DETERMINE COOLING AND HEATING LOADS AT DESIGN CONDITIONS. Given: Required Cooling Capacity (TC) . . . . . . . . . . . 38,000 Btuh Sensible Heat Capacity (SHC) . . . . . . . . . . . . 24,000 Btuh Required Heating Capacity . . . . . . . . . . . . . . . 3...
Page 21 - PERFORMANCE DATA — 548F; COOLING CAPACITIES; Direct interpolation is permissible. Do
21 PERFORMANCE DATA — 548F COOLING CAPACITIES 548F036 (3 TONS) Temp (F) Outdoor Entering Air (Edb) Indoor Entering Air — Cfm/BF 900/0.10 1200/0.15 1500/0.21 Indoor Entering Air — Ewb (F) 72 67 62 72 67 62 72 67 62 75 TC 42.4 39.9 36.5 43.0 41.2 38.7 45.1 42.8 40.3 SHC 16.7 22.0 26.8 17.5 24.2 30.9 1...
Page 23 - INSTANTANEOUS AND INTEGRATED HEATING RATINGS
23 PERFORMANCE DATA — 548F (cont) COOLING CAPACITIES (cont) LEGEND NOTES: 1. Direct interpolation is permissible. Do not extrapolate.2. The following formulas may be used: t lwb = Wet-bulb temperature corresponding to enthalpy of air leav- ing indoor coil (h lwb ) Where: h ewb = Enthalpy of air ente...
Page 24 - INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont); indicates integrated ratings.
24 PERFORMANCE DATA — 548F (cont) INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont) LEGEND NOTES: 1. indicates integrated ratings. 2. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it. 548F048 Return Air (F db) ...
Page 27 - FAN PERFORMANCE — VERTICAL DISCHARGE UNITS; See General Fan Performance notes below.; GENERAL FAN PERFORMANCE NOTES
27 PERFORMANCE DATA — 548F (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS LEGEND See General Fan Performance notes below. LEGEND *Motor drive range: 760 to 1000 rpm. All other rpms require a field- supplied drive. See General Fan Performance notes below.NOTES: 1. Boldface indicates field-supplied...
Page 28 - FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont); indicates field-supplied drive is required.
28 PERFORMANCE DATA — 548F (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND *Motor drive range: 1075 to 1455 rpm. All other rpms require a field- supplied drive. See General Fan Performance notes on page 27.NOTES: 1. Boldface indicates field-supplied drive is required. 2. Maximum cont...
Page 30 - See General Fan Performance notes on page 27.
30 PERFORMANCE DATA — 548F (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND See General Fan Performance notes on page 27. LEGEND *Motor drive range: 878 to 1192 rpm. All other rpms require a field- supplied drive. See General Fan Performance notes on page 27.NOTES: 1. Boldface indicat...
Page 39 - FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS
39 PERFORMANCE DATA — 548F (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS LEGEND See General Fan Performance notes on page 27. LEGEND *Motor drive range: 760 to 1000 rpm. All other rpms require a field-supplied drive. See General Fan Performance notes on page 27.NOTES: 1. Boldface indicates fie...
Page 40 - FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
40 PERFORMANCE DATA — 548F (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND See General Fan Performance notes on page 27. LEGEND *Motor drive range: 770 to 1175 rpm. All other rpms require a field- supplied drive. See General Fan Performance notes on page 27.NOTES: 1. Boldface indic...
Page 51 - Vertical EconoMi$erIV and
51 PERFORMANCE DATA — 548F (cont) 0 5 10 15 20 25 30 0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50 036 - 072 090 - 120 STATIC PRESSURE (in. wg) FLOW IN CUBIC FEET PER MINUTE (cfm) Vertical EconoMi$erIV and EconoMi$er2 Performance Data (548F036-120) VERTICAL POWER EXHAUST PERFORMANCE Horizontal EconoM...
Page 55 - ELECTRICAL DATA — 548F
55 ELECTRICAL DATA — 548F 548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) NOTE: Legend and Notes for Electrical Data are on page 57. UNIT548F NOMINAL V-PH-Hz IFM TYPE VOLTAGE RANGE COMPRESSOR (each) OFM FLA IFM FLA ELECTRIC HEAT* POWER SUPPLY DISCONNECT SIZE† Min Max RLA LRA Nominal kW** F...
Page 57 - POWER EXHAUST ELECTRICAL DATA
57 ELECTRICAL DATA — 548F (cont) 548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) (cont) LEGEND *Heaters are field installed only. †Used to determine minimum disconnect size per NEC. **Heater capacity (kW) is based on heater voltage of 208 v, 240 v and 480 v. If power distribution voltage t...
Page 65 - TYPICAL WIRING SCHEMATICS — 548F
65 TYPICAL WIRING SCHEMATICS — 548F AWG — American Wire Gage C — Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CH — Crankcase Heater COMP — Compressor Motor DB — Defrost Board DFT — Defrost Thermostat EQUIP — Equipment FPT — Freeze Protection Thermostat GND — Ground HC — Heater Contacto...
Page 66 - RUN
66 TYPICAL WIRING SCHEMATICS — 548F (cont) EconoMi$erIV Wiring 4 3 5 2 8 6 7 1 10 11 9 12 PINK VIOLET BLACK BLUE YELLOW NOTE 1 NOTE 2 RUN 500 OHMRESISTOR - + OPTIONAL CO SENSOR 4 - 20 mA OUTPUT 50HJ540573 ACTUATOR ASSEMBLY RED WHITE ECONOMISER2 PLUG DIRECT DRIVE ACTUATOR 2 NOTES: 1. Switch on actuat...
Page 67 - RED; Use copper conductors only.
67 TYPICAL WIRING SCHEMATICS — 548F (cont) C2 FOR 008-014 UNITS LINE SIDE C 11 13 23 23 21 BLU BLU GRA GRA RED GRA RED RED YEL YEL 208-230-1 ONLY 240V H1 H1 H3 H2 H2 H4 TRAN4 TRAN4 TRAN4 X4 X2 X3 X1 WHT BLK SECONDARY 120V GROUND FAULT INTERRUPTER CONVENIENCE OUTLET GFI - CO GRN-YEL GRN-YEL WHT BLK F...
Page 68 - TYPICAL PIPING AND WIRING — 548F; Vertical Discharge Ducting; National Electrical Code
68 TYPICAL PIPING AND WIRING — 548F Vertical Discharge Ducting Horizontal Discharge Ducting LEGEND NEC — National Electrical Code 50-1279 50-1297 548 F
Page 72 - both
72 GUIDE SPECIFICATIONS — 548F036-120 (cont) 12. Power Exhaust Accessory for EconoMi$erIV or EconoMi$er2: Power exhaust shall be used in conjunction withEconoMi$erIV or EconoMi$er2 to provide systemexhaust of up to 100% of return air (vertical only).The power exhaust is a field-installed accessory(s...
Page 81 - SELECTION PROCEDURE (WITH 549B048 EXAMPLE)
81 SELECTION PROCEDURE (WITH 549B048 EXAMPLE) I DETERMINE COOLING AND HEATING REQUIRE- MENTS AT DESIGN CONDITIONS: Given: Required Cooling Capacity (TC) . . . . . . . . . . 38,000 Btuh Sensible Heat Capacity (SHC). . . . . . . . . . . . 24,000 Btuh Required Heating Capacity . . . . . . . . . . . . ....
Page 115 - FAN RPM AT MOTOR PULLEY SETTINGS*; †Indicates standard motor and drive package.; INDOOR-FAN MOTOR PERFORMANCE — STANDARD MOTORS
115 PERFORMANCE DATA — 549B, 549C (cont) FAN RPM AT MOTOR PULLEY SETTINGS* *Approximate fan rpm shown. †Indicates standard motor and drive package. **Indicates high-static motor and drive package. INDOOR-FAN MOTOR PERFORMANCE — STANDARD MOTORS INDOOR-FAN MOTOR PERFORMANCE — HIGH-STATIC MOTORS LEGEND...
Page 117 - rated x; kW
117 PERFORMANCE DATA — 549B, 549C (cont) ELECTRIC HEATING CAPACITIES — 549B036-120 AND 549C024-060 *Two heater packages required to provide kW indicated. NOTES: 1. The rated heater voltage is 240 and 480 v. If power distribution voltage varies from rated heater voltage, heater kW will vary according...
Page 118 - MULTIPLICATION FACTORS
118 PERFORMANCE DATA — 549B, 549C (cont) ELECTRIC HEATING CAPACITIES — 549B036-120 AND 549C024-060 (cont) *Two heater packages required to provide kW indicated. NOTES: 1. The rated heater voltage is 240 and 480 v. If power distribution voltage varies from rated heater voltage, heater kW will vary ac...
Page 119 - ELECTRICAL DATA — 549B
119 ELECTRICAL DATA — 549B 549B036-120 STANDARD MOTOR UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET See Legend on page 114. UNIT549B NOMINALVOLTAGE V-PH-Hz VOLTAGE RANGE COMPRESSOR OFM IFM ELECTRIC HEAT* POWER SUPPLY MINIMUM UNIT DISCONNECT SIZE Min Max RLA LRA FLA FLA kW† FLA MCA MOCP FLA LRA 036 (3 ...
Page 127 - ELECTRICAL DATA — 549C; See Legend on page 128.
127 ELECTRICAL DATA — 549C 549C024-060 — STANDARD MOTOR UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET See Legend on page 128. UNIT 549C NOMINAL VOLTAGE (V-Ph-Hz) VOLTAGE RANGE COMPRESSOR (each) OFM (each) IFM ELECTRIC HEAT* POWER SUPPLY MINIMUM UNIT DISCONNECT SIZE Min Max RLA LRA FLA FLA kW† FLA MCA ...
Page 129 - See Legend on page 130.
129 ELECTRICAL DATA — 549C (cont) 549C024-060 — STANDARD MOTOR UNITS WITH ELECTRICAL CONVENIENCE OUTLET See Legend on page 130. UNIT 549C NOMINAL VOLTAGE (V-Ph-Hz) VOLTAGE RANGE COMPRESSOR (each) OFM (each) IFM ELECTRIC HEAT* POWER SUPPLY MINIMUM UNIT DISCONNECT SIZE Min Max RLA LRA FLA FLA kW† FLA ...
Page 134 - NEC —
134 TYPICAL PIPING AND WIRING — 549B036-120, 549C024-060 Vertical Discharge Ducting Horizontal Discharge Ducting LEGEND NEC — National Electrical Code 50-1262 a50-6711 549B , 549 C
Page 143 - CRRFCURB013A00 is a fully factory preassembled; ACCESSORY; Pre-Assembled Horizontal
143 ACCESSORY DIMENSIONS — 542J150,180 (cont) C O N V E N I E N C E O U T L E T F I E L D P O W E R K . O . C O N T R O L P O W E R K . O . 0 ’ - 4 1 / 2 " ( 11 4 ) 0 ’ - 7 3 / 1 6 " ( 4 8 7 ) Horizontal Adapter Installation — 542J150,180 NOTE: CRRFCURB013A00 is a fully factory preassembled ...
Page 145 - SELECTION PROCEDURE (WITH 542J180 EXAMPLE)
145 SELECTION PROCEDURE (WITH 542J180 EXAMPLE) I DETERMINE HEATING AND COOLING REQUIRE- MENTS AT DESIGN CONDITIONS: Given: Required Cooling Capacity (TC) . . . . . . . . . 164,000 Btuh Sensible Heat Capacity (SHC). . . . . . . . . . . 120,000 Btuh Required Heating Capacity . . . . . . . . . . . . . ...
Page 146 - PERFORMANCE DATA — 542J
146 PERFORMANCE DATA — 542J COOLING CAPACITIES LEGEND NOTES: 1. Direct interpolation is permissible. Do not extrapolate.2. The following formulas may be used: t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving indoor coil (h lwb ) Where: h ewb = Enthalpy of air entering indoor coi...
Page 147 - INTEGRATED HEATING CAPACITIES
147 PERFORMANCE DATA — 542J (cont) INTEGRATED HEATING CAPACITIES LEGEND NOTES: 1. Integrated heating capacity ratings shown are not adjusted for the effects of the indoor-fan motor power and heat. A deduction has been made for defrost-ing the outdoor coils at temperatures below 40 F. 2. Direct inter...
Page 152 - The following equation converts kW of heat energy to Btuh:
152 PERFORMANCE DATA — 542J (cont) GLYCOL COIL DATA* — 542J150,180 LEGEND *This accessory glycol coil is intended for use with a MINIMUM of 25% glycol solution. It IS NOT intended for use solely with water due tofreeze-up conditions and the resulting water damage to the condi-tioned space. NOTE: Flu...
Page 153 - ELECTRICAL DATA — 542J
153 ELECTRICAL DATA — 542J ELECTRICAL DATA — 542J150,180 LEGEND *Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 480 v and 600 v. If power distribution voltage to unit varies from rated heater voltage,heater kW will vary accordingly. †Fuse or HACR circuit breaker. This is the maximu...
Page 154 - TYPICAL WIRING SCHEMATIC — 542J
154 TYPICAL WIRING SCHEMATIC — 542J 542J180 460 V Shown a50-7581 5 42J
Page 156 - Outdoor Air Temperature Sensor
156 TYPICAL WIRING SCHEMATIC — 542J (cont) 4 3 5 2 8 6 7 1 10 11 9 12 PINK BLACK BLUE NOTE 1 NOTE 2 RUN 500 OHMRESISTOR 50HJ540573 ACTUATOR ASSEMBLY RED WHITE ECONOMISER2 PLUG DIRECT DRIVE ACTUATOR OAT LEGEND OAT — Outdoor Air Temperature Sensor NOTES: 1. Switch on actuator must be in run position f...
Page 163 - CONTROLS; Heating, Units Without Economizer —
163 CONTROLS SEQUENCE OF OPERATION — 548F036-120, 549B036-120,AND 549C024-060Cooling, Units Without Economizer — When thermostat calls for cooling, terminals G and Y1 are energized. The indoor-fancontactor (IFC), reversing valve solenoid (RVS1 for sizes 024-072) (RVS1 and RVS2 for sizes 090-120) and...
Page 165 - APPLICATION DATA; will not
165 APPLICATION DATA 1. OUTDOOR INSTALLATION — Units approved for outdoor installation only. 2. DUCTWORK — Secure vertical discharge ductwork to roof curb. For horizontal discharge applications, either attachductwork to unit, or use field-supplied flanges attached tothe horizontal discharge openings...
Page 167 - CHANGEOVER STRATEGIES —; APPROXIMATE DRY BULB TEMPERATURE— °F (°C); Economizer Changeover Curves
167 APPLICATION DATA (cont) IAQ sensors — EconoMi$erIV can be utilized with any IAQ(CO 2 ) sensor that provides a 2 to 10 vdc output. The con- troller will modulate the outdoor air damper to provide venti-lation based on the sensor output and the IAQ setting of thecontroller. When used, an IAQ senso...
Page 168 - ECONOMI$ERIV SENSOR USAGE; †CGCDXSEN004A00 is an accessory CO
168 Outside air enthalpy — EconoMi$erIV will be enabledbased on the outside air enthalpy curves as shown in theEconoMi$erIV Changeover diagram below. The A, B, C,and D curves shown have been in use for many years andhave been included as part of the latest ASHRAE 90.1energy efficiency code. The curv...