Bryant 549C User Manual
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Bryant 549C User Manual

Bryant 549C User Manual

Commercial single package rooftop standard and high efficiency heat pump units durapac and durapac plus
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COMMERCIAL
SINGLE PACKAGE ROOFTOP
STANDARD AND HIGH EFFICIENCY
HEAT PUMP UNITS
50-1219
Standard-Efficiency (548F), and High-Efficiency (549B, 549C,
542J) heat pump units offer:
• Pre-painted galvanized steel cabinet for long life and quality
appearance
• Commercial strength base rails with built-in rigging capability
• Convertible design for vertical or horizontal supply/return
• Non-corrosive,
sloped
ASHRAE 62 (IAQ)
• Two-inch return-air filters
• A wide assortment of factory-installed options available,
including high-static drives that provide additional perfor-
mance range
• Factory-installed optional gear driven EconoMi$erIV (vertical
return for sizes 024-120 only) for use with standard rooftop
unit controls (includes CO
• Factory-installed optional gear driven EconoMi$er2 (vertical
return only) for use with third party controls (includes 4 to
20 mA actuator for demand control ventilation)
• State-of-the-art defrost system
• Dependable 4-way valve operation
Heat Options
• Field-installed electric heat available
• Glycol hydronic coils
548F036-072
549B036-072
549C024-060
50-1214
condensate
drain
pan,
sensor control capability)
2
Models 542J, 548F, 549B, 549C
50-1304
542J150,180
Every compact one-piece unit arrives fully assembled,
charged, tested, and ready to run.
QUIET, EFFICIENT OPERATION AND DEPENDABLE PER-
FORMANCE — Compressors have vibration isolators for quiet
operation. Efficient fan and motor design permits operation at
meets
low sound levels.
Unit sizes 090-180 offer lower utility costs through part-load
operation using 2 stages of cooling.
Quiet and efficient operation is provided by belt-driven indoor
fans (standard on all units over 5 tons). The belt-driven indoor
fan is equipped with variable-pitch pulleys which allow adjust-
ment within the rpm ranges of the factory-supplied pulleys.
Increased operating efficiency is achieved through computer-
designed coils featuring staggered internally enhanced copper
tubes. Fins are ripple-edged for strength, lanced, and double
waved for higher heat transfer.
Sizes 024-180
DuraPac and DuraPac Plus

FEATURES/BENEFITS

Form No. PDS548F-36-6
2 to 15 Tons
548F090-120
549B090-120

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Summary of Contents for Bryant 549C

  • Page 1: Features/Benefits

    STANDARD AND HIGH EFFICIENCY HEAT PUMP UNITS 50-1219 50-1214 Standard-Efficiency (548F), and High-Efficiency (549B, 549C, 542J) heat pump units offer: • Pre-painted galvanized steel cabinet for long life and quality appearance • Commercial strength base rails with built-in rigging capability •...

  • Page 2: Table Of Contents

    In addition, color-coded wires permit easy tracing and diagnostics. PROVEN COMPRESSOR RELIABILITY Design techniques feature computer-programmed balance between compressor, condenser, and evaporator. Bryant-specified hermetic compressors are equipped with compressor overcurrent and overtemperature protection to ensure dependability. All units have a fixed orifice metering device which precisely controls refrigerant flow, preventing slugging and flood-back, while maintaining optimum unit performance.

  • Page 3: Service Options

    These options include the following: • Hinged access panels (549B, 549C and 542J only) are pro- vided for the filter/indoor-fan motor, compressors, indoor fan, and control box areas. Quick access to major components is accomplished by simply unlatching and swinging open the various panels.

  • Page 4: Model Number Nomenclature

    †Single-phase is only available on 036-060 size units. NOTE: The example model number 548FEX090000AA designates a 7 460-3-60 volt electric heat pump unit with factory-installed economizer. MODEL NUMBER NOMENCLATURE — 549B AND 549C UNITS 549B – Single-Packaged High-Efficiency Heat Pump Unit –...

  • Page 5: Model Number Nomenclature

    — wet bulb *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 with ARI Standards 210/240-95 and 270-95.

  • Page 6: Ari Capacity Ratings

    UNIT NOMINAL 549C TONS UNIT NOMINAL 549B TONS COOLING UNIT NOMINAL 549B TONS Net Cap. (Btuh) 71,000 88,000 98,000 116,000 LEGEND Cap. — Net Capacity (Btuh) — Coefficient of Performance — Energy Efficiency Ratio HSPF — Heating Seasonal Performance Factor IPLV —...

  • Page 7: Options And Accessories

    ITEM 100% Open Two-Position Damper 25% Open Two-Position Damper Alternate Motors and Drives Convenience Outlet (Load Side) Copper Fins Indoor and Outdoor Coil Copper Fins Outdoor Coil E-Coat Outdoor Coil (Aluminum) E-Coat Outdoor Coil (Copper) EconoMi$erIV with Controller EconoMi$er2 (without Controller) Electric Heat Electronic Programmable Thermostat Emergency Heat Package...
  • Page 8 ITEM 100% Open Two-Position Damper 25% Open Two-Position Damper Alternate Motors and Drives Convenience Outlet (Load Side) Copper Fins Indoor and Outdoor Coil Copper Fins Outdoor Coil E-Coat Outdoor Coil (Aluminum) E-Coat Outdoor Coil (Copper) EconoMi$erIV with Controller EconoMi$er2 (without Controller) Electric Heat Electronic Programmable Thermostat Emergency Heat Package...
  • Page 9 ITEM 25% Open Two-Position Damper Alternate Motors and Drives Barometric Relief Damper (Not for use with horizontal roof curb) Convenience Outlet (Load Side) Copper Fins Indoor and Outdoor Coil Copper Fins Outdoor Coil E-Coat Outdoor Coil (Aluminum) E-Coat Outdoor Coil (Copper) EconoMi$erIV with Controller EconoMi$er2 (without Controller) Electric Heat...
  • Page 10 Roof Curbs (Horizontal and Vertical) permit installation and securing of ductwork to curb prior to mounting unit on the curb. Both 14-in. and 24-in. roof curbs are available as field-installed accessories. EconoMi$erIV is available as a factory-installed option in vertical supply/return configuration only for unit sizes 036-120. Vertical or horizontal configuration is available for unit sizes 150 and 180.

  • Page 11: Convenience Outlet

    ECONOMI$ERIV CONTROL Open Free Cool a50-7750 UNIT-MOUNTED DISCONNECT (Sizes 024-120) 50-1247 CONVENIENCE OUTLET 50-1246 OPTIONS AND ACCESSORIES (cont) GEAR-DRIVEN ECONOMI$ERIV COMPONENT PARTS WIRING HARNESS 24 Vac ACTUATOR a50-8041 UNIT-MOUNTED DISCONNECT (Sizes 150,180) a48-7445 (3 to 6 Ton Unit Shown) ECONOMI$ERIV CONTROLLER OUTSIDE AIR TEMPERATURE SENSOR...
  • Page 12 OPTIONS AND ACCESSORIES (cont) CONTROL BOX HINGED PANEL OPTION, CONTROL BOX HINGED PANEL OPTION, 549B036-072 UNITS SHOWN 549B090-120 UNITS SHOWN 50-1288 a50-8042 COMPRESSOR HINGED PANEL OPTION, 549B036-060 UNITS SHOWN COMPRESSOR HINGED PANEL OPTION, 549B090-120 UNITS SHOWN 50-1298 NOTE: Hinged access panels are not available on 548F units. 50-1289...

  • Page 13: Options And Accessories

    OPTIONS AND ACCESSORIES (cont) EVAPORATOR-FAN HINGED PANEL OPTION FILTER HINGED PANEL OPTION 50-1290 NOTE: Hinged access panels are not available on 548F units. a50-8043 LOUVERED HAIL GUARD OPTON (024-120 only) a50-8059...

  • Page 14: Physical Data

    UNIT SIZE 548F NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit Economizer EconoMi$erIV or EconoMi$er2 Roof Curb* COMPRESSOR Quantity Oil (oz) REFRIGERANT TYPE Operating Charge (lb-oz) Circuit 1 Circuit 2 OUTDOOR COIL Rows...Fins/in. Total Face Area (sq ft) OUTDOOR FAN Nominal Cfm Quantity...Diameter (in.) Motor Hp...Rpm Watts Input (Total)

  • Page 15: Physical Data

    UNIT SIZE 548F NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit Economizer EconoMi$erIV or EconoMi$er2 Roof Curb* COMPRESSOR (Hermetic) Quantity Oil (oz) REFRIGERANT TYPE Operating Charge (lb-oz) Circuit 1 Circuit 2 OUTDOOR COIL Rows...Fins/in. Total Face Area (sq ft) OUTDOOR FAN Nominal Cfm Quantity...Diameter (in.) Motor Hp...Rpm...

  • Page 16: Base Unit Dimensions

    BASE UNIT DIMENSIONS a50-8044...

  • Page 17: Base Unit Dimensions

    BASE UNIT DIMENSIONS (cont) a50-8045...

  • Page 18: Accessory Dimensions

    CONNECTOR D ALT PKG. ACCY. DRAIN HOLE CRBTMPWR001A00 CRBTMPWR002A00 ″ 1′-9 1′-4″ CRBTMPWR003A00 [551] [406] [44.5] CRBTMPWR004A00 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 ACCESSORY DIMENSIONS POWER...
  • Page 19 CONNECTOR PKG. ACCY. CRBTMPWR001A00 CRBTMPWR002A00 ″ ″ 2′-8 1′-10 CRBTMPWR003A00 [827] [583] CRBTMPWR004A00 TO ENSURE AN AIRTIGHT CONNECTION, PLACE UNIT ON CURB AS CLOSE TO DUCT END AS POSSIBLE. TO ENSURE AN AIRTIGHT CONNECTION, PLACE UNIT ON CURB AS CLOSE TO DUCT END AS POSSIBLE.

  • Page 20: Selection Procedure

    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.

  • Page 21: Performance Data

    548F036 (3 TONS) Temp (F) 900/0.10 Outdoor Entering Air (Edb) 42.4 39.9 36.5 16.7 22.0 26.8 2.77 2.71 2.62 41.5 38.4 34.8 16.6 21.6 26.2 3.01 2.92 2.80 40.0 36.3 33.0 16.2 20.9 25.7 3.24 3.10 2.99 38.4 34.7 31.0 15.7 20.5 24.8...
  • Page 22 548F072 (6 TONS) Temp (F) 1800/0.10 Outdoor Entering Air (Edb) 81.1 77.6 72.1 36.2 46.9 57.0 5.16 5.11 5.01 80.7 75.8 70.0 36.1 46.5 56.4 5.83 5.74 5.65 79.3 73.0 67.3 35.8 45.4 55.3 6.54 6.37 6.28 76.0 70.6 64.3 34.6 44.8 54.1...

  • Page 23: Instantaneous And Integrated Heating Ratings

    548F120 (10 TONS) Temp (F) 2800/0.11 Outdoor Entering Air (Edb) 127.4 120.4 60.0 76.4 8.30 8.18 124.6 116.2 59.2 74.6 9.24 9.04 121.8 112.0 58.4 73.2 10.34 10.04 116.9 107.2 56.6 71.4 11.38 11.08 112.0 102.0 55.0 69.6 12.58 12.18 106.4 96.8 53.2...
  • Page 24 INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont) 548F048 Return (Standard (F db) Air) Cap. 22.7 19.3 1200 2.91 Cap. 23.1 19.7 1600 2.87 Cap. 23.4 19.9 2000 2.85 Cap. 20.6 17.5 1200 3.00 Cap. 21.2 18.0 1600 2.99 Cap. 21.6 18.3 2000 2.97 Cap.
  • Page 25 INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont) 548F072 Return (Standard (F db) Air) Cap. 37.8 32.2 1800 4.72 Cap. 37.9 32.2 2400 4.55 Cap. 38.0 32.3 3000 4.46 Cap. 37.3 31.7 1800 5.32 Cap. 37.5 31.9 2400 5.13 Cap. 37.6 32.0 3000 5.03 Cap.
  • Page 26 INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont) 548F120 Return (Standard (F db) Air) Cap. 52.2 44.4 2650 7.20 Cap. 52.7 44.8 3500 6.98 Cap. 53.2 45.2 4100 6.88 Cap. 53.2 45.2 4400 6.84 Cap. 49.8 42.2 2650 8.08 Cap. 50.6 43.0 3500 7.86 Cap.
  • Page 27 2. Values include losses for filters, unit casing, and wet coils. See Accessory/FIOP Static Pressure tables on page 50 for accessory static pressure information. 3. Use of a field-supplied motor may affect wire sizing. Contact your Bryant representative for details. 4. Interpolation is permissible. Do not extrapolate. High Speed 208 v...
  • Page 28 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F036 (3 TONS) — HIGH-STATIC MOTOR AND DRIVE* Airflow (Cfm) Watts 0.15 1000 0.19 1100 0.24 1200 0.29 1300 0.35 1400 0.43 1500 0.51 1002 548F036 (3 TONS) — HIGH-STATIC MOTOR AND DRIVE* (cont) Airflow (Cfm) Watts...
  • Page 29 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F048 (4 TONS) — ALTERNATE MOTOR AND DRIVE* Airflow (Cfm) Watts 1200 0.29 1300 0.35 1400 0.43 1500 0.51 1002 1600 0.60 1044 1700 0.70 1086 1800 1038 0.81 1130 1900 1085 0.94 2000 —...
  • Page 30 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F060 (5 TONS) — STANDARD MOTOR (DIRECT DRIVE) Low Speed Airflow 208 v 230, 460, 575 v (Cfm) Watts 1500 0.88 0.67 1.20 1600 0.68 0.70 1.04 1700 0.51 0.73 0.89 1800 0.35 0.75 0.73 1900...
  • Page 31 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F060 (5 TONS) — HIGH-STATIC MOTOR AND DRIVE* Airflow (Cfm) Watts 1500 0.42 1600 0.49 1700 0.57 1800 0.66 1020 1900 0.76 1057 2000 1010 0.87 1095 2100 1052 0.99 1133 2200 1095 1.12 1173 2300...
  • Page 32 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F072 (6 TONS) — HIGH-STATIC MOTOR AND BELT DRIVE* Airflow (Cfm) Watts 1800 0.66 1020 1900 0.76 1057 2000 1010 0.87 1095 2100 1052 0.99 1133 2200 1095 1.12 1173 2300 1137 1.26 1105 1212 2400...
  • Page 33 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F090 (7 TONS) — STANDARD MOTOR AND DRIVE* Airflow (Cfm) Watts 2250 0.58 2300 0.61 2400 0.68 2500 0.75 2550 0.79 2600 0.83 2700 0.91 2800 1.00 2900 1.09 1020 3000 1.20 1115 3100 1.30 1217...
  • Page 34 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F090 (7 TONS) — ALTERNATE DRIVE* Airflow (Cfm) Watts 2250 0.58 2300 0.61 2400 0.68 2500 0.75 2550 0.79 2600 0.83 2700 0.91 2800 1.00 2900 1.09 1020 3000 1.20 1115 3100 1.30 1217 3200 1.42...
  • Page 35 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F090 (7 TONS) — HIGH-STATIC MOTOR AND DRIVE* Airflow (Cfm) Watts 2250 0.58 2300 0.61 2400 0.68 2500 0.75 2550 0.79 2600 0.83 2700 0.91 2800 1.00 2900 1.09 1020 3000 1.20 1115 3100 1.30 1217...
  • Page 36 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F120 (10 TONS) — STANDARD MOTOR AND DRIVE* Airflow (Cfm) Watts 3000 0.65 3100 0.70 3200 0.76 3300 0.83 3400 0.89 3500 0.96 3600 1.04 3700 1.11 1040 3800 1.20 1116 3900 1.28 1197 4000 1.37...
  • Page 37 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F120 (10 TONS) — ALTERNATE MOTOR AND DRIVE* Airflow (Cfm) Watts 3000 0.65 3100 0.70 3200 0.76 3300 0.83 3400 0.89 3500 0.96 3600 1.04 3700 1.11 1040 3800 1.20 1116 3900 1.28 1197 4000 1.37...
  • Page 38 FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) 548F120 (10 TONS) — HIGH-STATIC MOTOR AND DRIVE* Airflow (Cfm) Watts 3000 0.65 3100 0.70 3200 0.76 3300 0.83 3400 0.89 3500 0.96 3600 1.04 3700 1.11 1040 3800 1.20 1116 3900 1.28 1197 4000 1.37...
  • Page 39 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS 548F036 (3 TONS) — STANDARD MOTOR (DIRECT DRIVE) Airflow 208 v (Cfm) Watts 0.72 0.21 1000 0.67 0.23 1100 0.61 0.24 1200 0.57 0.26 1300 0.51 0.27 1400 0.44 0.29 1500 0.39 0.30 LEGEND —...
  • Page 40 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F048 (4 TONS) — STANDARD MOTOR (DIRECT DRIVE)* Airflow 208 v (Cfm) Watts 1200 0.93 0.41 1300 0.86 0.42 1400 0.78 0.45 1500 0.73 0.47 1600 0.67 0.49 1700 0.60 0.52 1800 0.51 0.54 1900 0.40...
  • Page 41 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* Airflow (Cfm) Watts 1200 0.26 1300 0.31 1400 0.37 1500 0.43 1600 0.50 1700 0.59 1800 0.68 1900 0.78 2000 1008 0.89 548F048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont) Airflow (Cfm) Watts...
  • Page 42 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F060 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)* Airflow (Cfm) Watts 1500 0.38 1600 0.45 1700 0.52 1800 0.60 1900 0.69 1019 2000 0.78 1054 2100 1004 0.89 1090 2200 1044 1.01 1127 2300 1084 1.14...
  • Page 43 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F072 (6 TONS) — STANDARD MOTOR (BELT DRIVE)* Airflow (Cfm) Watts 1800 0.60 1900 0.69 1019 2000 0.78 1054 2100 1004 0.89 1090 2200 1044 1.01 1127 2300 1084 1.14 1009 1164 2400 1123 1.27 1132...
  • Page 44 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F090 (7 TONS) — STANDARD MOTOR AND DRIVE* Airflow (Cfm) Watts 2250 0.49 2300 0.52 2400 0.57 2500 0.63 2550 0.66 2600 0.69 2700 0.76 2800 0.83 2900 0.91 3000 0.99 3100 1.07 1002 3200 1.17...
  • Page 45 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F090 (7 TONS) — ALTERNATE DRIVE* Airflow (Cfm) Watts 2250 0.49 2300 0.52 2400 0.57 2500 0.63 2550 0.66 2600 0.69 2700 0.76 2800 0.83 2900 0.91 3000 0.99 3100 1.07 1002 3200 1.17 1087 3300...
  • Page 46 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F090 (7 TONS) — HIGH-STATIC MOTOR AND DRIVE* Airflow (Cfm) Watts 2250 0.49 2300 0.52 2400 0.57 2500 0.63 2550 0.66 2600 0.69 2700 0.76 2800 0.83 2900 0.91 3000 0.99 3100 1.07 1002 3200 1.17...
  • Page 47 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F120 (10 TONS) — STANDARD MOTOR AND DRIVE* Airflow (Cfm) Watts 3000 0.58 3100 0.63 3200 0.68 3300 0.74 3400 0.80 3500 0.86 3600 0.93 3700 1.00 3800 1.07 3900 1.15 1069 4000 1.23 1144 4100...
  • Page 48 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F120 (10 TONS) — ALTERNATE MOTOR AND DRIVE* Airflow (Cfm) Watts 3000 0.58 3100 0.63 3200 0.68 3300 0.74 3400 0.80 3500 0.86 3600 0.93 3700 1.00 3800 1.07 3900 1.15 1069 4000 1.23 1144 4100...
  • Page 49 FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) 548F120 (10 TONS) — HIGH-STATIC MOTOR AND DRIVE* Airflow (Cfm) Watts 3000 0.58 3100 0.63 3200 0.68 3300 0.74 3400 0.80 3500 0.86 3600 0.93 3700 1.00 3800 1.07 3900 1.15 1069 4000 1.23 1144 4100...
  • Page 50 FAN RPM AT MOTOR PULLEY SETTINGS* — 548F036-120 UNIT 548F 036† 1000 036** 1455 1423 1392 048† 1175 1135 1094 048** 1455 1423 1392 060† 1192 1166 1140 060** 1685 1647 1608 072†† 1460 1420 1380 072** 1685 1647 1608 090††...
  • Page 51 5000 4000 3000 2000 1000 STATIC PRESSURE (in. wg) VERTICAL POWER EXHAUST PERFORMANCE 2500 2000 1500 1000 0.05 0.15 0.25 STATIC PRESSURE (in. wg) BAROMETRIC RELIEF FLOW CAPACITY 0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50 STATIC PRESSURE (in. wg) OUTDOOR AIR DAMPER LEAKAGE Vertical EconoMi$erIV and EconoMi$er2 Performance Data...
  • Page 52 UNIT VOLTAGE 548F (60 Hz) 208/230/240 (single phase) 208/230/240 (3 phase) 460/480 (3 phase) 208/230/240 (single phase) 208/230/240 (3 phase) 460/480 (3 phase) 208/230/240 (single phase) 208/230/240 (3 phase) 460/480 (3 phase) 208/230/240 (3 phase) 460/480 (3 phase) *Two heater packages required to provide kW indicated. †Use CRSINGLE004A00 for units with convenience outlet.
  • Page 53 UNIT UNIT VOLTAGE 548F (60 Hz) 208/230/240 (3 phase) 460/480 (3 phase) (3 phase) 208/230/240 (3 phase) 460/480 (3 phase) (3 phase) *Two heater packages required to provide kW indicated. NOTES: 1. The rated heater voltage is 240, 480, and 575 v. If power distribution voltage varies from rated heater voltage, heater kW will vary accordingly. 2.
  • Page 54 INDOOR-FAN MOTOR PERFORMANCE — 548F036-120 UNITS UNIT INDOOR-FAN UNIT 548F MOTOR VOLTAGE 208/230 Standard 208/230 Alternate 208/230 High Static 208/230 Standard 208/230 Alternate 208/230 High Static 208/230 Standard 208/230 Alternate 208/230 High Static 208/230 Standard 208/230 High Static 208/230 Standard, Alternate 208/230 High Static...

  • Page 55: Electrical Data

    548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 208/230-1-60 208/230-3-60 (3 Tons) HIGH-STATIC 460-3-60 HIGH-STATIC 575-3-60 HIGH-STATIC 208/230-1-60 (4 Tons) 208/230-3-60 HIGH-STATIC NOTE: Legend and Notes for Electrical Data are on page 57. ELECTRICAL DATA — 548F COMPRESSOR ELECTRIC (each)
  • Page 56 548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 460-3-60 (4 Tons) (cont) HIGH-STATIC 575-3-60 HIGH-STATIC 208/230-1-60 208/230-3-60 (5 Tons) HIGH-STATIC 460-3-60 HIGH-STATIC 575-3-60 HIGH-STATIC NOTE: Legend and Notes for Electrical Data are on page 57. ELECTRICAL DATA —...
  • Page 57 548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE Min Max 208/230-3-60 HIGH- STATIC (6 Tons) 460-3-60 HIGH- STATIC 575-3-60 HIGH- STATIC LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration — Indoor Fan Motor —...
  • Page 58 548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE Min Max 208/230-3-60 HIGH-STATIC 187 Tons) 460-3-60 HIGH-STATIC 414 575-3-60 HIGH-STATIC NOTE: Legend and Notes for Electrical Data are on page 57. ELECTRICAL DATA — 548F (cont) COMPRESSOR ELECTRIC HEAT* (each)
  • Page 59 548F036-120 (UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE Min Max 187 254 208/230-3-60 187 254 HIGH-STATIC 187 254 414 508 (10 Tons) 460-3-60 414 508 HIGH-STATIC 414 508 518 632 575-3-60 518 632 HIGH-STATIC 518 632 NOTE: Legend and Notes for Electrical Data are on page 57.
  • Page 60 548F036-120 (UNITS WITH ELECTRICAL CONVENIENCE OUTLET) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 208/230-1-60 208/230-3-60 (3 Tons) HIGH-STATIC 460-3-60 HIGH-STATIC 575-3-60 HIGH-STATIC 208/230-1-60 (4 Tons) 208/230-3-60 HIGH-STATIC NOTE: Legend and Notes for Electrical Data are on page 62. ELECTRICAL DATA — 548F (cont) COMPRESSOR ELECTRIC (each)
  • Page 61 548F036-120 (UNITS WITH ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 460-3-60 (4 Tons) (cont) HIGH-STATIC 575-3-60 HIGH-STATIC 208/230-1-60 208/230-3-60 (5 Tons) HIGH-STATIC 460-3-60 HIGH-STATIC 575-3-60 HIGH-STATIC NOTE: Legend and Notes for Electrical Data are on page 62. ELECTRICAL DATA —...
  • Page 62 548F036-120 (UNITS WITH ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 208/230-3-60 HIGH-STATIC (6 Tons) 460-3-60 HIGH-STATIC 575-3-60 HIGH-STATIC LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration — Indoor Fan Motor — Locked Rotor Amps —...
  • Page 63 548F036-120 (UNITS WITH ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 208/230-3-60 HIGH-STATIC Tons) 460-3-60 HIGH-STATIC 575-3-60 HIGH-STATIC 208/230-3-60 (10 Tons) HIGH-STATIC NOTE: Legend and Notes for Electrical Data are on page 64. ELECTRICAL DATA — 548F (cont) COMPRESSOR ELECTRIC (each)

  • Page 64: Electrical Data

    548F036-120 (UNITS WITH ELECTRICAL CONVENIENCE OUTLET) (cont) VOLTAGE RANGE UNIT NOMINAL 548F V-PH-Hz TYPE 460-3-60 HIGH-STATIC (10 Tons) 575-3-60 HIGH-STATIC LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration — Indoor Fan Motor — Locked Rotor Amps —...

  • Page 65: Typical Wiring Schematics

    a50-8052 — American Wire Gage — Contactor, Compressor — Capacitor — Circuit Breaker — Crankcase Heater COMP — Compressor Motor — Defrost Board — Defrost Thermostat EQUIP — Equipment — Freeze Protection Thermostat — Ground — Heater Contactor — High-Pressure Switch —...
  • Page 66 TYPICAL WIRING SCHEMATICS — 548F (cont) a48-7910 NOTE: LEGEND Potentiometer Defaults Settings: IAQ — Indoor Air Quality Power Exhaust LA — Low Ambient Lockout Device Minimum Pos. POT— Potentiometer DCV Max. OAT — Outdoor-Air Temperature DCV Set RAT — Return-Air Temperature Enthalpy 500 OHM RESISTOR...

  • Page 67: Typical Wiring Schematics

    TYPICAL WIRING SCHEMATICS — 548F (cont) 460V YEL BLU TRAN4 SECONDARY 120V 600V TRAN4 SECONDARY 120V a48-7462 FIELD POWER SUPPLY a48-7463 NOTE: Use copper conductors only. Non-Fused Disconnect (Optional) — 548F036-120 C2 FOR 008-014 UNITS TRAN4 SECONDARY 120V FUSE SWITCH 15 AMP Convenience Outlet (Optional) —...

  • Page 68: Typical Piping And Wiring

    TYPICAL PIPING AND WIRING — 548F 50-1279 Vertical Discharge Ducting LEGEND NEC — National Electrical Code 50-1297 Horizontal Discharge Ducting...

  • Page 69: Quality Assurance

    SIZE RANGE: 3 TO 10 TONS, NOMINAL (COOLING) 34,400 TO 105,000 BTUH, NOMINAL (HEATING) 4 TO 50 kW NOMINAL (ELECTRIC HEATING) BRYANT MODEL NUMBER: 548F PART 1 — GENERAL 1.01 SYSTEM DESCRIPTION Outdoor rooftop-mounted or slab-mounted, electrically controlled air-to-air heat pump utilizing a hermetic com- pressor for heating and cooling duty.

  • Page 70: Guide Specifications

    L. Special Features: Certain features are not applicable when the features designated by * are specified. For assistance in amend- ing the specifications, your local Bryant Sales Office should be contacted. 1. Roof Curbs: a. Formed galvanized steel with wood nailer strip and capable of supporting entire unit weight.
  • Page 71 GUIDE SPECIFICATIONS — 548F036-120 (cont) f. EconoMi$erIV and EconoMi$er2 shall be equipped with a barometric relief damper capable of relieving up to 100% return air. g. Designed to close damper(s) during loss-of- power situations with spring return built into motor. h.
  • Page 72 GUIDE SPECIFICATIONS — 548F036-120 (cont) 12. Power Exhaust Accessory for EconoMi$erIV or EconoMi$er2: Power exhaust shall be used in conjunction with EconoMi$erIV or EconoMi$er2 to provide system exhaust of up to 100% of return air (vertical only). The power exhaust is a field-installed accessory (separate vertical and horizontal design).

  • Page 73: 549C Physical Data

    UNIT SIZE 549B NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit EconoMi$erIV Roof Curb COMPRESSOR Quantity Oil (oz) REFRIGERANT TYPE Operating Charge (lb) OUTDOOR COIL Rows...Fins/in. Total Face Area (sq ft) OUTDOOR FAN Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm INDOOR COIL Rows...Fins/in.
  • Page 74 BASE UNIT 549B NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit EconoMi$erIV Roof Curb COMPRESSOR Quantity Oil (oz) (each compr) REFRIGERANT TYPE Operating Charge (lb) Circuit 1 Circuit 2 OUTDOOR COIL Rows...Fins/in. Total Face Area (sq ft) OUTDOOR FAN Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm INDOOR COIL...

  • Page 75: Physical Data

    UNIT SIZE 549C NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit EconoMi$erIV Roof Curb COMPRESSOR Quantity Oil (oz) REFRIGERANT TYPE Operating Charge (lb) OUTDOOR FAN Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm OUTDOOR COIL Rows...Fins/in. Total Face Area (sq ft) INDOOR FAN Quantity...Size (in.)

  • Page 76: Base Unit Dimensions

    BASE UNIT DIMENSIONS a50-8054...
  • Page 77 BASE UNIT DIMENSIONS (cont) a50-8055...

  • Page 78: Base Unit Dimensions

    BASE UNIT DIMENSIONS (cont) a50-8097...

  • Page 79: Accessory Dimensions

    ″ [31.7] [19] NPT 549B036-072 AND 549C024-060 ROOF CURB UNIT SIZE ACCESSORY 1′-2″ CRRFCURB001A01 [356] 549B, 549C 024-072 2′-0″ CRRFCURB002A01 [610] NOTES: 1. Roof curb accessory is shipped disassembled. 2. Insulated panels. 3. Dimensions in [ ] are in millimeters.
  • Page 80 D ALT CONNECTOR DRAIN PKG. ACCY. HOLE CRBTMPWR001A01 CRBTMPWR002A01 ″ ″ ″ 2′-8 1′-10 CRBTMPWR003A01 [827] [583] [44.5] CRBTMPWR004A01 ACCESSORY DIMENSIONS (cont) ACCESSOR POWER CONTROL POWER ″ [19] NPT ″ ″ [31.7] [19] NPT ″ ″ ″ ″ [19] NPT [12.7] NPT [12.7] NPT [12.7] NPT...

  • Page 81: Selection Procedure

    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 82: Performance Data

    43.5 4.96 4.91 4.81 60.2 47.9 41.2 28.8 34.8 39.3 5.55 5.43 5.33 PERFORMANCE DATA — 549B, 549C COOLING CAPACITIES Indoor Entering Air — Cfm/BF 1200/0.15 1500/0.18 Indoor Entering Air — Ewb (F) 42.9 39.6 36.3 43.6 40.6 21.5 27.6 32.9...
  • Page 83 9.79 9.60 9.40 94.0 76.6 63.1 48.3 58.5 63.1 10.91 10.65 10.45 PERFORMANCE DATA — 549B, 549C (cont) COOLING CAPACITIES (cont) 2400/0.071 3000/0.088 Indoor Entering Air — Cfm/BF 3000/0.15 3750/0.18 Indoor Entering Air — Ewb (F) 100.8 95.6 89.9 101.6 97.8...
  • Page 84 (h total capacity (Btuh) – 4.5 x cfm Where: h = Enthalpy of air entering indoor coil PERFORMANCE DATA — 549B, 549C (cont) COOLING CAPACITIES (cont) Indoor Entering Air — Cfm/BF 4000/0.04 5000/0.06 Indoor Entering Air — Ewb (F) 141.2...
  • Page 85 (h total capacity (Btuh) – 4.5 x cfm Where: h = Enthalpy of air entering indoor coil PERFORMANCE DATA — 549B, 549C (cont) COOLING CAPACITIES (cont) Indoor Entering Air — Cfm/BF 1200/0.07 1500/0.09 Indoor Entering Air — Ewb (F) 38.5...
  • Page 86 (h total capacity (Btuh) – 4.5 x cfm Where: h = Enthalpy of air entering indoor coil PERFORMANCE DATA — 549B, 549C (cont) COOLING CAPACITIES (cont) Indoor Entering Air — Cfm/BF 1750/.05 Indoor Entering Air — Ewb (F) 70.3 59.5...
  • Page 87 Cap. — Heating Capacity (1000 Btuh) (includes indoor-fan motor heat) kW — Total Power Input (includes compressor motor power input, outdoor-fan motor input, and indoor-fan motor input) — Relative Humidity PERFORMANCE DATA — 549B, 549C (cont) Temperature Air Entering Outdoor Coil (F db at 70% rh) 1.66 1.75 1.85...
  • Page 88 Cap. — Heating Capacity (1000 Btuh) (includes indoor-fan motor heat) kW — Total Power Input (includes compressor motor power input, outdoor-fan motor input, and indoor-fan motor input) — Relative Humidity PERFORMANCE DATA — 549B, 549C (cont) Temperature Air Entering Outdoor Coil (F db at 70% rh) 3.36 3.54 3.54...
  • Page 89 Cap. — Heating Capacity (1000 Btuh) (includes indoor-fan motor heat) kW — Total Power Input (includes compressor motor power input, outdoor-fan motor input, and indoor-fan motor input) — Relative Humidity PERFORMANCE DATA — 549B, 549C (cont) Temperature Air Entering Outdoor Coil (F db at 70% rh) 5.61 5.74 5.84...
  • Page 90 Cap. — Heating Capacity (1000 Btuh) (includes indoor-fan motor heat) kW — Total Power Input (includes compressor motor power input, outdoor-fan motor input, and indoor-fan motor input) — Relative Humidity PERFORMANCE DATA — 549B, 549C (cont) Temperature Air Entering Outdoor Coil (F db at 70% rh) 7.25 7.43 7.55...
  • Page 91 Cap. — Heating Capacity (1000 Btuh) (includes indoor-fan motor heat) kW — Total Power Input (includes compressor motor power input, outdoor-fan motor input, and indoor-fan motor input) — Relative Humidity PERFORMANCE DATA — 549B, 549C (cont) Temperature Air Entering Outdoor Coil (F db) 2.09 2.18 2.25...
  • Page 92 NOTES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bhp is 0.58. 3. See page 103 for General Fan Performance Notes. PERFORMANCE DATA — 549B, 549C (cont) Temperature Air Entering Outdoor Coil (F db) 3.36 3.47 3.56 3.74...
  • Page 93 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1075 to 1455 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.23 0.32 0.27...
  • Page 94 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1075 to 1455 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts Watts 0.36 0.48...
  • Page 95 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.53 0.68 0.60 1022 0.75...
  • Page 96 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1119 to 1585 rpm. All other rpms require field-supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.53 0.68 0.60 1022 0.75...
  • Page 97 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1300 to 1685 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.80 1092 0.97...
  • Page 98 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 730 to 950 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.73 0.95 0.76...
  • Page 99 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 860 to 1080 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.73 0.95 0.76...
  • Page 100 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 840 to 1085 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.54 0.67 0.59...
  • Page 101 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 860 to 1080 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.54 0.67 0.59...
  • Page 102 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 860 to 1080 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.80 0.95 0.86...
  • Page 103 Unit warranty will not be affected. For additional information on motor performance, refer to Indoor-Fan Motor Performance table on page 115. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.80 0.95...
  • Page 104 1093 LEGEND — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied drive. PERFORMANCE DATA — 549B, 549C (cont) 0.14 0.21 0.29 0.37 0.16 0.24 0.32 0.41...
  • Page 105 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1075 to 1455 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts Watts 0.35 0.46...
  • Page 106 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.45 0.59 0.51 0.65...
  • Page 107 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1119 to 1585 rpm. All other rpms require field-supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.45 0.59 0.51 0.65...
  • Page 108 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 1300 to 1685 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts Watts 0.66 1018 0.82...
  • Page 109 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 730 to 950 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.64 0.86 0.66...
  • Page 110 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 860 to 1080 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts Watts 0.64 0.86...
  • Page 111 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 840 to 1085 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts Watts 0.50 0.64...
  • Page 112 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 860 to 1080 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts Watts 0.50 0.64...
  • Page 113 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 860 to 1080 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.73 0.88 0.78...
  • Page 114 — Brake Horsepower Input to Fan Watts — Input Watts to Motor *Motor drive range: 922 to 1219 rpm. All other rpms require field- supplied drive. PERFORMANCE DATA — 549B, 549C (cont) External Static Pressure (in. wg) Watts 0.73 0.88 0.78...
  • Page 115 Using your fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. PERFORMANCE DATA — 549B, 549C (cont) FAN RPM AT MOTOR PULLEY SETTINGS*...
  • Page 116 Fan Performance tables to deter- mine blower rpm and watts. NOTE: The rooftop unit return air configuration determines the economizer configuration (verti- cal or horizontal). PERFORMANCE DATA — 549B, 549C (cont) 1200 1400 1600 0.05...
  • Page 117 As an example: For a 16 kW heater rated at 240 v with a power distribution voltage of 215 v = 16 kW (215/240) = 12.8 kW (rating at 215 v) PERFORMANCE DATA — 549B, 549C (cont) ACCESSORY HEATER ACCESSORY PART NUMBER CRHEATER---A00 3.3/ 4.0/ 4.4...

  • Page 118: Multiplication Factors

    62.3 69.3 71.5 74.7 76.2 64.6 71.1 73.3 76.9 77.6 64.6 71.1 73.3 76.9 77.6 — Air Conditioning and Refrigeration Institute Lw (A) — Unit A — Weighted Sound Power Level PERFORMANCE DATA — 549B, 549C (cont) ACCESSORY 7.8/ 9.6/10.4 12.0/14.7/16.0 18.6/22.8/24.8 24.0/29.4/32.0...

  • Page 119: Electrical Data

    549B036-120 STANDARD MOTOR UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET VOLTAGE NOMINAL COMPRESSOR UNIT RANGE VOLTAGE 549B V-PH-Hz 208/230-1-60 16.0 (3 Tons) 208/230-3-60 10.3 460-3-60 208/230-1-60 18.3 (4 Tons) 208/230-3-60 12.4 460-3-60 208/230-1-60 25.0 208/230-3-60 17.3 (5 Tons) 460-3-60 208/230-3-60 20.5 (6 Tons) 460-3-60 See Legend on page 114.
  • Page 120 549B036-120 STANDARD MOTOR UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET (cont) VOLTAGE COMPRESSOR NOMINAL UNIT RANGE VOLTAGE 549B (V-Ph-Hz) 208/230-3-60 12.4 Tons) 460-3-60 208/230-3-60 13.9 Tons) 460-3-60 208/230-3-60 19.3 (10 Tons) 460-3-60 10.0 LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration —...
  • Page 121 549B036-120 — STANDARD MOTOR UNITS WITH ELECTRICAL CONVENIENCE OUTLET VOLTAGE NOMINAL UNIT RANGE VOLTAGE 549B V-PH-Hz 208/230-1-60 (3 Tons) 208/230-3-60 460-3-60 208/230-1-60 (4 Tons) 208/230-3-60 460-3-60 208/230-1-60 208/230-3-60 (5 Tons) 460-3-60 208/230-3-60 (6 Tons) 460-3-60 See Legend on page 122. ELECTRICAL DATA —...
  • Page 122 549B036-120 — STANDARD MOTOR UNITS WITH ELECTRICAL CONVENIENCE OUTLET (cont) VOLTAGE COMPRESSOR NOMINAL UNIT RANGE VOLTAGE 549B (V-Ph-Hz) 208/230-3-60 12.4 Tons) 460-3-60 208/230-3-60 13.9 Tons) 460-3-60 208/230-3-60 19.3 (10 Tons) 460-3-60 10.0 LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration —...
  • Page 123 549B036-120 — HIGH-STATIC MOTOR UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET VOLTAGE NOMINAL COMPRESSOR UNIT RANGE VOLTAGE 549B V-PH-Hz 208/230-3-60 (3 Tons) 460-3-60 208/230-3-60 (4 Tons) 460-3-60 208/230-3-60 (5 Tons) 460-3-60 208/230-3-60 (6 Tons) 460-3-60 See Legend on page 124. ELECTRICAL DATA — 549B (cont) ELECTRIC HEAT* kW†...
  • Page 124 549B036-120 — HIGH-STATIC MOTOR UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET (cont) VOLTAGE COMPRESSOR NOMINAL UNIT RANGE VOLTAGE 549B (V-Ph-Hz) 208/230-3-60 12.4 Tons) 460-3-60 208/230-3-60 13.9 Tons) 460-3-60 208/230-3-60 19.3 (10 Tons) 460-3-60 10.0 LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration —...
  • Page 125 549B036-120 — HIGH-STATIC MOTOR UNITS WITH ELECTRICAL CONVENIENCE OUTLET VOLTAGE NOMINAL UNIT RANGE VOLTAGE 549B V-PH-Hz 208/230-3-60 (3 Tons) 460-3-60 208/230-3-60 (4 Tons) 460-3-60 208/230-3-60 (5 Tons) 460-3-60 208/230-3-60 (6 Tons) 460-3-60 See Legend on page 126. ELECTRICAL DATA — 549B (cont) ELECTRIC COMPRESSOR HEAT*...
  • Page 126 549B036-120 — HIGH-STATIC MOTOR UNITS WITH ELECTRICAL CONVENIENCE OUTLET (cont) VOLTAGE COMPRESSOR NOMINAL UNIT RANGE VOLTAGE 549B (V-Ph-Hz) 208/230-3-60 12.4 Tons) 460-3-60 208/230-3-60 13.9 Tons) 460-3-60 208/230-3-60 19.3 (10 Tons) 460-3-60 10.0 LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration —...
  • Page 127 208/230-1-60 197 (4Tons) 208/230-3-60 187 14.1 460-3-60 208/230-1-60 187 25.0 208/230-3-60 187 17.3 (5Tons) 460-3-60 See Legend on page 128. ELECTRICAL DATA — 549C ELECTRIC HEAT* (each) (each) kW† —/— —/— 3.3/ 4.4 15.9/18.3 63.0 4.9/ 6.5 23.6/27.1 6.5/ 8.7 31.3/36.3...
  • Page 128 Example: Supply voltage is 460-3-60. AB = 452 v BC = 464 v AC = 455 v 452 + 464 + 455 Average Voltage = 1371 = 457 ELECTRICAL DATA — 549C (cont) ELECTRIC HEAT* (each) (each) kW† —/— 3.3/ 4.4 4.9/ 6.5 77.0...
  • Page 129 208/230-1-60 21.0 (4 Tons) 208/230-3-60 14.1 460-3-60 208/230-1-60 25.0 208/230-3-60 17.3 (5 Tons) 460-3-60 See Legend on page 130. ELECTRICAL DATA — 549C (cont) ELECTRIC HEAT* (each) (each) kW† —/— 3.3/ 4.4 15.9/18.3 63.0 4.9/ 6.5 23.6/27.1 6.5/ 8.7 31.3/36.3 7.9/10.5...
  • Page 130 Example: Supply voltage is 460-3-60. AB = 452 v BC = 464 v AC = 455 v 452 + 464 + 455 Average Voltage = 1371 = 457 ELECTRICAL DATA — 549C (cont) ELECTRIC HEAT* (each) (each) kW† —/— 3.3/ 4.4 4.9/ 6.5 77.0...

  • Page 131: Typical Wiring Schematics

    TYPICAL WIRING SCHEMATICS — 549B, 549C a50-8056 — American Wire Gage — Contactor, Compressor — Capacitor — Circuit Breaker — Compressor Lockout COMP — Compressor Motor — Defrost Board — Defrost Thermostat — Freeze Protection Thermostat — Fuse — Ground —...
  • Page 132 TYPICAL WIRING SCHEMATICS — 549B, 549C (cont) a48-7910 NOTE: LEGEND Potentiometer Defaults Settings: IAQ — Indoor Air Quality Power Exhaust LA — Low Ambient Lockout Device Minimum Pos. POT— Potentiometer DCV Max. OAT — Outdoor-Air Temperature DCV Set RAT — Return-Air Temperature Enthalpy EconoMi$erIV Wiring —...

  • Page 133: Typical Wiring Schematics

    TYPICAL WIRING SCHEMATICS — 549B, 549C (cont) 460V YEL BLU TRAN4 SECONDARY 120V 600V TRAN4 SECONDARY 120V a48-8189 Convenience Outlet (Optional) — 549B036-120, 549C024-060 FIELD POWER SUPPLY a48-7463 NOTE: Use copper conductors only. Non-Fused Disconnect (Optional) — 549B036-120, 549C024-060 C2 FOR 090-120 UNITS...

  • Page 134: Typical Piping And Wiring

    TYPICAL PIPING AND WIRING — 549B036-120, 549C024-060 50-1262 Vertical Discharge Ducting LEGEND NEC — National Electrical Code a50-6711 Horizontal Discharge Ducting...

  • Page 135: Quality Assurance

    PART 1 — GENERAL 1.01 SYSTEM DESCRIPTION Outdoor rooftop mounted, electrically controlled air-to-air heat pump unit utilizing a scroll compressor for cooling duty and electric resistance coils for heating duty. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.

  • Page 136: Guide Specifications

    GUIDE SPECIFICATIONS — 549B036-120, 549C024-060 (cont) 3. Coils: a. Copper-fin coils shall be constructed of copper fins mechanically bonded to copper tubes and copper tube sheets. Galvanized steel tube sheets shall not be acceptable. A polymer strip shall pre- vent coil assembly from contacting the sheet metal coil pan to minimize potential for galvanic corrosion between coil and pan.
  • Page 137 M. Special Features: Certain features are not applicable when the features designated * are specified. For assistance in amending the specifications, contact your local Bryant Sales Office. 1. Roof Curbs (Horizontal and Vertical): a. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
  • Page 138 GUIDE SPECIFICATIONS — 549B036-120, 549C024-060 (cont) * 5. 25% Two-Position Damper: a. Two-position damper package shall include single blade damper and motor. Admits up to 25% outdoor air. b. Damper shall close upon indoor fan shutoff. * 6. Head Pressure Control Package: Control package shall consist of solid-state control and condenser-coil temperature sensor to maintain condensing temperature between 90 F and 110 F at...
  • Page 139 GUIDE SPECIFICATIONS — 549B036-120, 549C024-060 (cont) 23. Indoor Quality (EconoMi$erIV): Sensor shall have the ability to provide demand ven- tilation control through the EconoMi$erIV. The IAQ sensor shall be wall mounted with an LED display in parts per million. The set point shall have adjustment capability.

  • Page 140: Physical Data

    UNIT SIZE 542J NOMINAL CAPACITY (tons) OPERATING WT (lb) Unit EconoMi$erIV EconoMi$er2 Roof Curb* COMPRESSOR Model Number (Quantity) Cylinders Capacity Staging (%) Oil Change (oz) REFRIGERANT TYPE Charge (lb) System 1 System 2 OUTDOOR COIL Rows Fins/in. Total Face Area (sq ft) OUTDOOR FAN Nominal Cfm Number...Diameter (in.)

  • Page 141: Base Unit Dimensions

    a50-8057 BASE UNIT DIMENSIONS UNIT 542J LEGEND KO — Knockout NOTES: 1. Dimensions in [ ] are in millimeters. Center of gravity. 4. Ductwork to be attached to accessory roof curb only. 5. Minimum clearance: a. Rear: 7′-0″ (2134) for coil removal. This dimension can be reduced to 4′-0″...
  • Page 142 ACCESSORY DIMENSIONS — 542J150,180 a50-5670...

  • Page 143: Accessory Dimensions

    ACCESSORY DIMENSIONS — 542J150,180 (cont) a48-7457 NOTE: CRRFCURB013A00 is a fully factory preassembled horizontal adapter and includes an insulated transition duct. The pressure drop through the adapter curb is negligible. Power exhaust and barometric relief accessory are not avail- able with horizontal adapter. For horizontal return applications: The power exhaust and barometric relief dampers must be installed in the return air duct.
  • Page 144 ACCESSORY DIMENSIONS — 542J150,180 (cont) a50-6498 Non-Fused Disconnect — 542J150,180 2'-1 5/8" 2'-2 1/16" 48-1169 1'-6 5/16" Power Exhaust — 542J150,180...

  • Page 145: Selection Procedure

    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 542J150 (12 Tons) Temp (F) 3750/0.04 Outdoor Entering Air (Edb) 167.0 154.0 140.0 79.6 100.0 120.0 10.00 9.77 9.50 160.0 148.0 133.0 77.6 98.9 118.0 11.10 10.80 10.40 155.0 141.0 127.0 76.1 96.3 115.0 12.20 11.80 11.40 147.0 133.0 120.0 73.6 93.3 112.0...
  • Page 147 542J150 (12 Tons) Return –10 Temp Cap. Cap. Cap. F (db) 40.4 7.81 53.0 8.35 65.6 3750 37.7 8.19 49.8 8.85 61.9 35.4 8.41 47.1 9.15 58.8 40.3 7.98 53.9 8.49 67.5 4500 36.7 8.38 49.8 9.00 62.9 33.2 8.64 46.4 9.32 59.6...

  • Page 148: Performance Data

    FAN PERFORMANCE — VERTICAL DISCHARGE UNITS 542J150 (208/230 V AND 460 V) (12 TONS)* Airflow (Cfm) Watts 3750 0.55 4000 0.70 4250 0.86 4500 1.04 4750 1084 1.23 5000 1267 1.44 5250 1464 1.67 1011 5500 1675 1.91 1041 5750 1901 2.17 1072...
  • Page 149 2. Values include losses for filters, unit casing, and wet coils. See page 151 for accessory/FIOP static pressure information. 3. Use of a field-supplied motor may affect wire sizing. Contact your Bryant representative for details. 4. Interpolation is permissible. Do not extrapolate. Watts...

  • Page 150: Fan Rpm At Motor Pulley Settings

    a50-4028 Fan Performance Using Accessory Power Exhaust — 542J150,180 UNIT 542J 150 (208/230 V and 460 V)† — 150 (208/230 V and 460 V)** — 150 (575 V)† — 180† — 180** — *Approximate fan rpm shown. †Indicates standard motor and drive package. **Indicates standard motor and alternate drive package.
  • Page 151 ACCESSORY/FIOP STATIC PRESSURE* (in. wg) — 542J150,180 ACCESSORY/FIOP UNIT SIZE Electric Heaters EconoMi$erIV and 150,180 EconoMi$er2 Glycol Coil 150,180 LEGEND FIOP — Factory-Installed Option *Units with electric heat are not designed to operate at these ranges. NOTES: 1. Heaters are rated at 208/240 v, 480 v, and 600 v. UNIT 542J —...
  • Page 152 4400 Cap. Cap. LEGEND Cap. — Btuh x 1000 EDB — Entering Dry-Bulb Temperature (F) EGT — Entering Glycol Temperature (F) Gpm — Gallons per Minute — Leaving Dry-Bulb Temperature (F) ENTERING FLUID 4000 TEMP ΔP NOTE: ΔP is the fluid pressure in ft of head. HEATER RATING VOLTAGE 0.694...

  • Page 153: Electrical Data

    COMPRESSOR VOLTAGE RANGE UNIT VOLTAGE No. 1 542J (3 PH, 60 Hz) Min Max RLA LRA RLA LRA 208/230 39.7 19.9 16.0 208/230 28.2 14.1 11.3 LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration — Locked Rotor Amps —...

  • Page 154: Typical Wiring Schematics

    TYPICAL WIRING SCHEMATIC — 542J a50-7581 542J180 460 V Shown...
  • Page 155 TYPICAL WIRING SCHEMATIC — 542J (cont) — Contactor, Compressor — Capacitor — Circuit Breaker — Crankcase Heater — Compressor Lockout COMP — Compressor Motor — Defrost Board — Defrost Thermostat — Freeze Protection Limit Switch — Freeze Protection Thermostat — Fuse —...

  • Page 156: Typical Wiring Schematics

    TYPICAL WIRING SCHEMATIC — 542J (cont) 500 OHM RESISTOR NOTE 1 NOTE 2 50HJ540573 ACTUATOR ASSEMBLY DIRECT DRIVE ACTUATOR a50-8058 LEGEND OAT — Outdoor Air Temperature Sensor NOTES: 1. Switch on actuator must be in run position for economizer to operate. 2.

  • Page 157: Typical Piping And Wiring

    TYPICAL PIPING AND WIRING — 542J150,180 c50-1087 LEGEND NEC — National Electrical Code NOTES: 1. Illustration shown is a general guide only and is not intended to include all details for any specific installation. 2. Installation must comply with all applicable codes. 3.
  • Page 158 SIZE RANGE: 13 AND 15 TONS, NOMINAL (COOLING) 136,000 TO 172,000 BTUH, NOMINAL (HEATING) 19 TO 50 kW NOMINAL (ELECTRIC HEATING) BRYANT MODEL NUMBER: 542J PART 1 — GENERAL 1.01 SYSTEM DESCRIPTION Outdoor rooftop mounted, electrically controlled air-to-air heat pump unit utilizing reciprocating, semi-hermetic compressor(s) for cooling duty and electric resistance coils for heating duty.

  • Page 159: Guide Specifications

    GUIDE SPECIFICATIONS — 542J150,180 (cont) E. Coils: 1. Standard indoor and outdoor coils shall have copper or aluminum plate fins mechanically bonded to seamless internally grooved copper tubes with all joints brazed. 2. Coils shall be leak tested at 150 psig (1034 kPa) and pressure tested at 450 psig (3103 kPa).
  • Page 160 M. Special Features: Certain features are not applicable when the features designated * are specified. For assistance in amending the specifications, contact your local Bryant Sales Office. 1. Roof Curbs (Horizontal and Vertical): a. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
  • Page 161 GUIDE SPECIFICATIONS — 542J150,180 (cont) 5. Manual Outdoor-Air Damper: Manual damper package shall consist of damper, birdscreen, and rainhood which can be preset to admit up to 50% outdoor air for year round ventilation. * 6. 25% Two-Position Damper: a. Two-position damper package shall include single blade damper and motor.
  • Page 162 GUIDE SPECIFICATIONS — 542J150,180 (cont) 24. Glycol Coil: Coil shall be 2-row copper tube ( aluminum plate fins (15 fins/in.) and 1.625 in. OD copper headers. Input and output connections shall be 1.625 in. ODM copper stubs for sweat connec- tion.

  • Page 163: Controls

    SEQUENCE OF OPERATION — 548F036-120, 549B036-120, AND 549C024-060 Cooling, Units Without Economizer — When thermostat calls for cooling, terminals G and Y1 are energized. The indoor-fan contactor (IFC), reversing valve solenoid (RVS1 for sizes 024- 072) (RVS1 and RVS2 for sizes 090-120) and compressor con- tactor are energized and indoor-fan motor, compressor, and outdoor fan starts.
  • Page 164 Continuous Air Circulation — Turn unit power on. Set system control at OFF position. Set fan switch at ON position. The indoor-fan contactor is energized through the thermostat switch and the indoor fan runs continuously. Cycle-LOC™ Protection — If unit operation is interrupted by an open high-pressure switch, low-pressure switch, indoor coil freezestat, or by compressor internal line-break device (over- current or overtemperature), and compressor is calling for...

  • Page 165: Application Data

    090-120 34.0 Vertical For 542J, 549B, and 549C units with electric heating, required minimum cfm is 600 for 549C024, 900 for 549B/C036, 1200 for 549B/C048, 1500 for 549B/C060, 1700 for 549B072, 2250 for 549B090, 3000 for 549B120, 3900 for 542J150, and 4500 for...
  • Page 166 NOTES: 1. Do not drill in this area, damage to basepan may result in water leak. 2. A 90-degree elbow must be provided in the supply ductwork to comply with UL (Underwriters Laboratories) codes for use with electric heat. Concentric Duct Distribution — 542J150,180 DESCRIPTION (Enviro-Shield™...
  • Page 167 IAQ sensors — EconoMi$erIV can be utilized with any IAQ ) sensor that provides a 2 to 10 vdc output. The con- troller will modulate the outdoor air damper to provide venti- lation based on the sensor output and the IAQ setting of the controller.
  • Page 168 Outside air enthalpy — EconoMi$erIV will be enabled based on the outside air enthalpy curves as shown in the EconoMi$erIV Changeover diagram below. The A, B, C, and D curves shown have been in use for many years and have been included as part of the latest ASHRAE 90.1 energy efficiency code.
  • Page 170 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE UNIT MUST BE INSTALLED IN ACCORDANCE WITH INSTALLATION INSTRUCTIONS Copyright 2009 Bryant Heating & Cooling Systems Printed in U.S.A. 4/09 Catalog No. PDS548F-36-6...

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