Page 2 - TABLE OF CONTENTS
2 TABLE OF CONTENTS Page Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14Application Dat...
Page 4 - OPTIONS AND ACCESSORIES; accessory/and option package information.
4 OPTIONS AND ACCESSORIES *Factory-installed. †Field-installed. **Special order/DEC only. NOTES: 1. Refer to unit 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 Two-Posi...
Page 5 - LOW AMBIENT CONTROLS; MOTORMASTER IV CONTROL; BAROMETRIC RELIEF/POWER EXHAUST
5 OPTIONS AND ACCESSORIES (cont) LOW AMBIENT CONTROLS Standard units are designed to operate in cooling at outdoor temperatures down to 25 F (for size 036-120 units) and 40 F (for size 150,180 units).With accessory Motormaster control (outdoor-fan cycling) units can operate at outdoor temperatures d...
Page 6 - OUTDOOR COIL OPTIONS; Aluminum Fin with Copper Tube Coil; ELECTRIC HEATERS
6 OPTIONS AND ACCESSORIES (cont) CONTROLLER BAROMETRICRELIEF DAMPERS OUTDOOR AIRTEMPERATURESENSOR GEAR-DRIVENDAMPER ACTUATOR ECONOMI$ERPLUG 20 40 60 80 100 0 A B C D OFF 500 1000 1400 1200 10 ° 20 ° 30 ° 50 ° 60 ° 40 ° ECON 5P CO SP (FFM) 2 MIN POS (%) MECH C O LOCKOUT L STATUS CONFIG AD-DME1711-1 D...
Page 7 - CONVENIENCE OUTLET
7 OPTIONS AND ACCESSORIES (cont) Factory-installed, internally mounted, NEC (National ElectricalCode) and UL (Underwriters’ Laboratories) approved non-fusedswitch provides unit power shutoff with disconnect lockout protec-tion capability. The switch is accessible from outside the unit. Factory-insta...
Page 8 - BRYANT COMMERCIAL PROGRAMMABLE THERMOSTAT; Hinged access panels are not available on 548F units.; COMPRESSOR HINGED PANEL OPTION,
8 OPTIONS AND ACCESSORIES (cont) Outdoor coil hail guard accessory (field installed) protects coilsagainst damage from hail and other flying debris. Coil guard grille protects coils against large objects and vandalism. BRYANT COMMERCIAL PROGRAMMABLE THERMOSTAT NOTE: Hinged access panels are not avai...
Page 9 - Hinged access panels are not available on
9 OPTIONS AND ACCESSORIES (cont) This is included as a factory-installed option. It per-mits quick and simple indoor-fan access. This is included as a factory-installed option. It permits tool-lessfilter access. NOTE: Hinged access panels are not available on 548F units. FILTER HINGED PANEL OPTION (...
Page 10 - CONTROLS
10 CONTROLS OPERATING SEQUENCE — 548F036-120 AND 549B036-120Cooling, Units Without Economizer — When thermostat calls for cooling, terminals G and Y1 are energized. The indoor-fancontactor (IFC), reversing valve solenoid (RVS1) and compres-sor contactor no. 1 (C1) are energized and indoor-fan motor,...
Page 11 - Heating, Units With Economizer —
11 CONTROLS (cont) NOTE: Compressor no. 2 cannot be energized unless there is a signal for Y2 from the space thermostat. 4. If compressor no. 2 is energized, and the Y2 signal from the thermostat is satisfied, compressor no. 1 and 2 are deener-gized. Reasser ting Y2 will start compressor no. 1 and (...
Page 13 - OPERATING MODES; BP —; Building Pressurization:; SD —; Field Wiring
13 CONTROLS (cont) OPERATING MODES BP — Building Pressurization: Indoor fan on, economizer energized to fully open position, power exhaust disabled. E — Evacuation: Indoor fan off, economizer energized to fully open position, power exhaust on (open). SD — Complete Unit Shutdown: Breaks 24-v power to...
Page 14 - APPLICATION DATA; will not
14 CONTROLS (cont) LEGEND 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 horizon...
Page 15 - Concentric Duct Distribution —; Concentric Duct Details —
15 APPLICATION DATA (cont) Concentric Duct Distribution — 542J150,180 NOTE: 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 usewith electric heat. 6'-2 3/8'...
Page 16 - TYPICAL PIPING AND WIRING; LEGEND; National Electrical Code
16 TYPICAL PIPING AND WIRING Vertical Discharge Ducting — 548F036-120 and 549B036-120 Horizontal Discharge Ducting — 548F036-120 and 549B036-120 LEGEND NEC — National Electrical Code
Page 17 - use with electric heat.; NEC —
17 TYPICAL PIPING AND WIRING (cont) LEGEND NOTES: 1. Illustration shown is a general guide only and is not intended for or to include all details for any specific installation.2. Installation must comply with all applicable codes.3. A 90-degree elbow must be provided in the supply ductwork to comply...
Page 18 - No factory-installed electric heaters
18 MODEL NUMBER NOMENCLATURE — 548F UNITS (ODS Model Number) 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 heat pump units. ††Not ASHRAE 90.1-99 compl...
Page 19 - PHYSICAL DATA
19 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 Durablade 34 3...
Page 21 - BASE UNIT DIMENSIONS
21 BASE UNIT DIMENSIONS 548 F03 6 -0 72 50TFQ 004 -012 548F0 3 6-120
Page 23 - ACCESSORY DIMENSIONS
23 ACCESSORY DIMENSIONS TO ENSURE AIRTIGHT CONNECTION.PLACE UNIT AS CLOSE TO THISEND AS POSSIBLE TO ENSURE AIRTIGHT CONNECTION.PLACE UNIT AS CLOSE TO THISEND AS POSSIBLE ROOF CURB ACCESSORY A UNIT SIZE CRRFCURB001A00 1 ′ -2 ″ [356] 548F036-072 CRRFCURB002A00 2 ′ -0 ″ [610] NOTES: 1. Roof curb access...
Page 25 - SELECTION PROCEDURE (WITH 548F048 EXAMPLE)
25 SELECTION PROCEDURE (WITH 548F048 EXAMPLE) I DETERMINE COOLING AND HEATING LOADS AT DESIGN CONDITIONS. Given: Required Cooling Capacity (TC) . . . . . . . . . . 38,000 BtuhSensible Heat Capacity (SHC). . . . . . . . . . . . 24,000 BtuhRequired Heating Capacity . . . . . . . . . . . . . . 35,000 B...
Page 26 - PERFORMANCE DATA; COOLING CAPACITIES
26 PERFORMANCE DATA 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 19.3 26....
Page 28 - INSTANTANEOUS AND INTEGRATED HEATING RATINGS
28 PERFORMANCE DATA (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 leaving indoor coil (h lwb ) Where: h ewb = Enthalpy of air entering evap...
Page 29 - INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont); indicates integrated ratings.
29 PERFORMANCE DATA (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) Cfm (St...
Page 32 - FAN PERFORMANCE — VERTICAL DISCHARGE UNITS
32 PERFORMANCE DATA (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS LEGEND Refer to page 51 for general Fan Performance notes. LEGEND *Motor drive range: 760 to 1000 rpm. All other r pms require field-supplied drive. Refer to page 51 for general Fan Performance notes. NOTES : 1. Boldface indicates...
Page 33 - FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
33 PERFORMANCE DATA (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND Refer to page 51 for general Fan Performance notes. LEGEND *Motor drive range: 835 to 1185 r pm. All other rpms require field-supplied drive. Refer to page 51 for general Fan Perfor mance notes. NOTES: 1. Boldface in...
Page 41 - *Standard motor drive range: 685 to 935 rpm. Alternate motor drive
41 PERFORMANCE DATA (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND *Standard motor drive range: 685 to 935 rpm. Alternate motor drive range: 835 to 1085 rpm. High-static motor drive range is 830 to1130 rpm. All other rpms require field-supplied drive. Refer to page 51 for general Fa...
Page 42 - FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS
42 PERFORMANCE DATA (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS LEGEND Refer to page 51 for general Fan Performance notes. LEGEND *Motor drive range: 760 to 1000 rpm. All other r pms require field-supplied drive. Refer to page 51 for general Fan Performance notes. NOTES: 1. Boldface indicate...
Page 43 - FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
43 PERFORMANCE DATA (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND Refer to page 51 for general Fan Performance notes. LEGEND *Motor drive range: 835 to 1185 r pm. All other rpms require field-supplied drive. Refer to page 51 for general Fan Perfor mance notes. NOTES: 1. Boldface ...
Page 51 - Refer to this page for general Fan Performance notes.
51 PERFORMANCE DATA (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND *Standard motor drive range: 685 to 935 rpm. Alternate motor drive range: 835 to 1085 rpm. High static motor drive range: 830 to1130 rpm. All other rpms require field-supplied drive. Refer to this page for general ...
Page 53 - EconoMi$er Barometric Relief; POWER REQUIREMENTS
53 PERFORMANCE DATA (cont) FLOW (cfm) 0 0.1 0.2 0.3 0.4 0.5 STATIC PRESSURE (in. wg) 2 FANSOPERATING 1 FANOPERATING 2500 2000 1500 1000 500 0 5000 4000 3000 2000 1000 0 0 0.1 0.2 0.3 0.4 0.5 STATIC PRESSURE (in. wg) FLOW (cfm) 2 FANSOPERATING 1 FANOPERATING 0.25 0.20 0.15 0.10 0.05 0.00 0 500 1000 1...
Page 55 - INDOOR-FAN MOTOR PERFORMANCE — 548F UNITS
55 PERFORMANCE DATA (cont) INDOOR-FAN MOTOR PERFORMANCE — 548F UNITS LEGEND BHP — Brake Horsepower *Extensive motor and electrical testing on these units ensures that the full horse- power range of the motors can be utilized with confidence. Using your fan motorsup to the horsepower ratings shown in...
Page 56 - ELECTRICAL DATA; UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET
56 ELECTRICAL DATA UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET NOTE: Legend and Notes for Electrical Data are on page 64. 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** FLA MCA MOCP FLA LRA 0...
Page 57 - UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET (cont)
57 ELECTRICAL DATA (cont) UNITS WITHOUT ELECTRICAL CONVENIENCE OUTLET (cont) NOTE: Legend and Notes for Electrical Data are on page 64. UNIT 548F 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** FLA MCA...
Page 60 - UNITS WITH ELECTRICAL CONVENIENCE OUTLET
60 ELECTRICAL DATA (cont) UNITS WITH ELECTRICAL CONVENIENCE OUTLET NOTE: Legend and Notes for Electrical Data are on page 64. UNIT 548F 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** FLA MCA MOCP FLA ...
Page 61 - UNITS WITH ELECTRICAL CONVENIENCE OUTLET (cont)
61 ELECTRICAL DATA (cont) UNITS WITH ELECTRICAL CONVENIENCE OUTLET (cont) NOTE: Legend and Notes for Electrical Data are on page 64. 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** FLA MCA MOC...
Page 64 - LEGEND AND NOTES FOR ELECTRICAL TABLES
64 ELECTRICAL DATA (cont) LEGEND AND NOTES FOR ELECTRICAL TABLES 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, 480 v, and 575 v. If power distribution voltage to unit varies from ratedh...
Page 65 - TYPICAL WIRING SCHEMATIC
65 TYPICAL WIRING SCHEMATIC LEGEND AHA — Adjustable Heat Anticipator AWG — American Wire Gage C — Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CC — Cooling Capacitor CH — Crankcase Heater COMP — Compressor Motor D — Diode DB — Defrost Board DFT — Defrost Thermostat EC — Enthalpy Contro...
Page 67 - Factory-Installed Options; No Heat Installed
67 MODEL NUMBER NOMENCLATURE (ODS Model Number) ARI* CAPACITY RATINGS 549B036-060 549B072-120 LEGEND *Air Conditioning and Refrigeration Institute. †Applies only to units with capacity of 60,000 Btuh or less. NOTE: Rated in accordance with ARI Standard 210/240-95 and 270-95. Rat-ings are net values,...
Page 68 - Scroll
68 PHYSICAL DATA 549B036-072 LEGEND BASE UNIT 549B 036 048 060 072 NOMINAL CAPACITY (tons) 3 4 5 6 OPERATING WEIGHT (lb) Unit 500 550 590 630 Durablade Economizer 34 34 34 34 EconoMi$er 47 47 47 47 Roof Curb 115 115 115 115 COMPRESSOR Scroll Quantity 1 1 1 1 Oil (oz) 42 53 50 60 REFRIGERANT TYPE R-2...
Page 74 - SELECTION PROCEDURE (WITH 549B048 EXAMPLE)
74 SELECTION PROCEDURE (WITH 549B048 EXAMPLE) I DETERMINE COOLING AND HEATING REQUIRE- MENTS AT DESIGN CONDITIONS. Given: Required Cooling Capacity (TC) . . . . . . . . . . . 38,000 BtuhSensible Heat Capacity (SHC) . . . . . . . . . . . . 24,000 BtuhRequired Heating Capacity . . . . . . . . . . . . ...
Page 80 - Refer to page 87 for general Fan Performance notes.
80 PERFORMANCE DATA (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS LEGEND Refer to page 87 for general Fan Performance notes. NOTES: 1. Boldface indicates a field-supplied drive is required. (See Note 3.) 2. Maximum continuous bhp is 1.20. 3. Motor drive range: 760 to 1090 rpm. All other rpms req...
Page 90 - ARI; Air Conditioning and Refrigeration Institute
90 PERFORMANCE DATA (cont) ELECTRIC HEATING CAPACITIES ELECTRIC HEATING CAPACITIES (cont) *Two heater packages required to provide kW indicated.†On units with factor y-installed outlet, use CRSINGLE014A00. NOTES: The kW ratings shown above are at 240 and 480 v. Use the Multiplication Factors table t...
Page 96 - LEGEND FOR TYPICAL WIRING SCHEMATIC
96 TYPICAL WIRING SCHEMATIC (cont) LEGEND FOR TYPICAL WIRING SCHEMATIC IMPORTANT: Consult unit wiring label for actual wiring schematic. NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent. 2. Three phase motors are protected un...
Page 102 - WEIGHT DISTRIBUTION AND CENTER OF GRAVITY
102 ARI* CAPACITY RATINGS 542J150,180 UNITS LEGEND *Air-Conditioning and Refrigeration Institute. NOTES: 542J units are rated in accordance with ARI Standard 340. Cooling ratings are net values, reflecting the effects of circulating fanheat. Ratings are based on:ESP: –.35 in. wg Cooling Standard: 80...
Page 106 - CRRFCURB013A00 is a fully factory pre-assembled horizontal; ACCESSORY; High Static
106 ACCESSORY DIMENSIONS (cont) Horizontal Adapter Installation — 542J150,180 NOTE: CRRFCURB013A00 is a fully factory pre-assembled horizontal adapter which includes an insulated high static regain transition duct andsubstantially improves fan static performance. Power exhaust and baro-metric relief...
Page 108 - SELECTION PROCEDURE (WITH 542J180 EXAMPLE)
108 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 110 - INTEGRATED HEATING CAPACITIES
110 PERFORMANCE DATA (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 interpolatio...
Page 112 - Fan Performance Using Accessory Power Exhaust
112 PERFORMANCE DATA (cont) ACCESSORY/FIOP STATIC PRESSURE* (in. wg) — 542J150,180 LEGEND *Units with electric heat are not designed to operate at these ranges. NOTES: 1. Heaters are rated at 208/240 v and 480 v.2. The static pressure must be added to external static pressure. The sum and the indoor...
Page 116 - LEGEND AND NOTES FOR TYPICAL WIRING SCHEMATIC
116 TYPICAL WIRING SCHEMATIC (cont) LEGEND AND NOTES FOR TYPICAL WIRING SCHEMATIC AHA — Adjustable Heat Anticipator BKR W/AT — Breaks with Amp Turns C — Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CC — Cooling Compensator CH — Crankcase Heater CLO — Compressor Lockout COMP — Compresso...
Page 117 - and the component arrangement label.
117 TYPICAL WIRING SCHEMATIC (cont) 5L3 3L2 1L1 LINE 6T3 4T2 2T1 LOAD Optional Non-Fused Disconnect — 542J150,180 NOTES: 1. If the non-fused disconnect Service Option is ordered for size 150,180 units, the Non-Fused Disconnect will be factory-installed. 2. The Disconnect takes the place of TB-1 as s...
Page 122 - INDEX
Copyright 2002 Bryant Heating & Cooling Systems Printed in U.S.A. 1/02 Catalog No. 5254-804 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE UNIT MUST BE INSTALLED IN ACCORDANCE WITH INSTALLATION INSTRUCTIONS INDEX 542J150,180 section 101-121 548F036-120 section 18-66,97-100 549B036-120 section 6...
