Carrier WeatherExpert 48LC B Series Product Data
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Carrier WeatherExpert 48LC B Series Product Data

Gas heat/electric cooling multizone vav packaged rooftop units 6 to 10 nominal tons
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Unit shown with economizer.
© 2022 Carrier
Product Data
WeatherExpert
Gas Heat/Electric Cooling
Multizone VAV
Packaged Rooftop Units
6 to 10 Nominal Tons
48LC*B Sizes 07-12
Single Packaged Multizone VAV Rooftop Units with
Gas Heat/Electric Cooling
®
Form 48LCB-7-12-02PD

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Summary of Contents for Carrier WeatherExpert 48LC B Series

  • Page 1 Product Data WeatherExpert ® Gas Heat/Electric Cooling Multizone VAV Packaged Rooftop Units 6 to 10 Nominal Tons 48LC*B Sizes 07-12 Unit shown with economizer. Single Packaged Multizone VAV Rooftop Units with Gas Heat/Electric Cooling © 2022 Carrier Form 48LCB-7-12-02PD...

  • Page 2: Table Of Contents

    Easy to Maintain maintenance costs, and high metering devices to provide opti- reliability. Easy access door handles by Carrier mum operation through the entire provide quick access to all normally operating range. These MZ-VAV models not only pro- serviced components.
  • Page 3 45°F (7°C). An economizer shall be the source of - Integrated system control - Linkage to required Carrier i-Vu ® cooling in low ambient conditions. required Carrier i-Vu VAV zon- VAV zoning controls for single ®...
  • Page 4 TYPICAL VAV RTU-OPEN SYSTEM LAYOUT AND COMPONENTS...

  • Page 5: Model Number Nomenclature

    S = Cu/Cu — Cu/Cu — Louvered Hail Guard NOTE: Not all possible options can be displayed above. Refer to other support material or your local Carrier Expert. Vertical air flow economizer factory option, must be field installed for horizontal air flow models.

  • Page 6: Ahri Capacity Ratings

    AHRI capacity ratings AHRI COOLING RATING, 208V a, b, c, d RATED NOMINAL TOTAL COOLING HEATING MOTOR NOMINAL SEER/ INDOOR 48LC*B COOLING POWER STAGES OPTION OPTION CAPACITY IEER AIRFLOW CAPACITY (kW) (CFM) — 70.0 13.0 20.5 2,250 89.0 13.0 19.8 2,625 89.0 12.8...

  • Page 7: Sound Performance

    Sound power values are independent of the environment and therefore more accurate. c. A-weighted sound ratings filter out very high and very low frequencies, to better approximate the response of “average” human ear. A-weighted measurements for Carrier units are taken in accordance with AHRI.

  • Page 8: Physical Data

    Physical data PHYSICAL DATA (COOLING) 6 TO 10 TONS 48LC*B07 48LC*B08 48LC*B09 48LC*B12 REFRIGERATION SYSTEM No. Circuits/No. Comp./Type/Cooling Stages 1/2/Scroll/3 1/2/Scroll/3 1/2/Scroll/3 1/2/Scroll/3 RTPF Models R-410A Charge A/B (lb-oz) 15-8 22-5 25-11 24-15 Metering Device High-Press. Trip/Reset (psig) 630/505 630/505 630/505 630/505 Low-Press.
  • Page 9 Physical data (cont) PHYSICAL DATA (HEATING) 6 TO 10 TONS 48LC*B07 48LC*B08 48LC*B09 48LC*B12 GAS CONNECTION No. of Gas Valves Natural Gas Supply Line Press. (in. wg)/(psig) 4-13/0.18-0.47 4-13/0.18-0.47 4-13/0.18-0.47 4-13/0.18-0.47 Propane Supply Line Press. (in. wg)/(psig) 11-13/0.40-0.47 11-13/0.40-0.47 11-13/0.40-0.47 11-13/0.40-0.47 HEAT ANTICIPATOR SETTING (AMPS) First Stage...
  • Page 10 Open (BACnet MS/TP) equipment controller. Includes built-in temperature and humidity sensor. i-Vu System Touch; Carrier brand 4.3 in. color touch screen user interface connects to a network of up to 60 Open (BACnet MS/TP) equipment controllers. Includes built-in temperature and humidity sensor.

  • Page 11: Options And Accessories

    Trust the experts. Smoke detectors make your application Allows access to the unit’s major components with specifi- safer and your job easier. Carrier smoke detectors immedi- cally designed hinged access panels. Panels are: filter, con- ately shut down the rooftop unit when smoke is detected.
  • Page 12 Flue Discharge Deflector Zone Terminal Sensors The flue discharge deflector is a useful accessory when flue A full range of Carrier zone air terminal space sensors are gas recirculation is a concern. By venting the flue discharge available with capabilities combining: upwards, the deflector minimizes the chance for a neigh- •...
  • Page 13 Options and accessories (cont) OPTIONS AND ACCESSORY WEIGHTS WEIGHTS IN LB OPTION/ACCESSORY 48LC*B07 48LC*B08 48LC*B09 48LC*B12 Medium Gas Heat High Gas Heat Medium Heat with Stainless Steel Exchanger High Heat with Stainless Steel Exchanger Return Smoke Detector Supply Smoke Detector RA and SA Smoke Detector Sensor RA Smoke Detector and CO...

  • Page 14: Dimensions

    48LC*B07 UNIT DIMENSIONS...
  • Page 15 48LC*B07 UNIT DIMENSIONS (cont)
  • Page 16 48LC*B07 UNIT DIMENSIONS (cont)
  • Page 17 THIRD ANGLE DIMENSIONS ARE IN INCHES PROJECTION TOLERANCES ON: THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS PROPRIETARY TO CARRIER CORPORATION AND SHALL NOT 1 DEC 2 DEC 3 DEC BE USED OR DISCLOSED TO OTHERS, IN WHOLE OR IN PART, MATERIAL WITHOUT THE WRITTEN AUTHORIZATION OF CARRIER CORPORATION.
  • Page 18 48LC*B08 UNIT DIMENSIONS...
  • Page 19 48LC*B08 UNIT DIMENSIONS (cont)
  • Page 20 48LC*B08 UNIT DIMENSIONS (cont)
  • Page 21 48LC*B08 UNIT DIMENSIONS (cont)
  • Page 22 48LC*B09-12 UNIT DIMENSIONS...
  • Page 23 48LC*B09-12 UNIT DIMENSIONS (cont)
  • Page 24 48LC*B09-12 UNIT DIMENSIONS (cont)
  • Page 25 48LC*B09-12 UNIT DIMENSIONS (cont)
  • Page 26 48LC*B08-12 ROOF CURB DETAILS...

  • Page 27: Performance Data

    Performance data COOLING CAPACITIES — FIRST STAGE, PART LOAD (6 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 07 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 31.6 31.6 34.5 30.6 30.6 33.0 29.5 29.5 32.0 28.3 28.3 31.4...
  • Page 28 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (6 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 07 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 39.0 39.0 43.9 39.1 39.1 43.8 39.0 39.0 43.6 38.9...
  • Page 29 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (6 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 07 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 35.9 35.9 35.9 34.8 34.8 34.9 33.5 33.5 34.1 32.2 32.2...
  • Page 30 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (6 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 07 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 49.9 49.9 56.3 48.7 48.7 54.7 47.2 47.2 53.0 45.6...
  • Page 31 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (6 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 07 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 61.5 61.5 62.7 59.6 59.6 61.5 57.3 57.3 60.3 54.9 54.9...
  • Page 32 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (6 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 07 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 78.9 78.9 89.0 76.0 76.0 85.7 72.8 72.8 82.2 69.5...
  • Page 33 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (7.5 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 08 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 32.6 32.6 33.6 31.5 31.5 33.2 30.2 30.2 32.5 28.9 28.9...
  • Page 34 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (7.5 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 08 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 52.5 52.5 59.3 49.0 49.0 55.7 45.5 45.5 51.9 41.8...
  • Page 35 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (7.5 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 08 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 42.3 42.3 42.3 41.0 41.0 41.0 39.4 39.4 39.7 37.8 37.8...
  • Page 36 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (7.5 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 08 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 61.3 61.3 69.3 57.7 57.7 65.4 53.9 53.9 61.3 50.1...
  • Page 37 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (7.5 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 08 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 80.5 80.5 80.8 77.9 77.9 79.4 75.0 75.0 77.6 71.8 71.8...
  • Page 38 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (7.5 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 08 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 103.5 103.5 117.1 98.0 98.0 111.1 92.2 92.2 104.8 86.2 86.2 98.2...
  • Page 39 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (8.5 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 09 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 38.9 38.9 42.0 37.6 37.6 41.2 36.2 36.2 40.5 34.8 34.8...
  • Page 40 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (8.5 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 09 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 55.3 55.3 62.3 53.2 53.2 60.1 50.9 50.9 57.4 48.5...
  • Page 41 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (8.5 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 09 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 50.1 50.1 50.1 48.7 48.7 48.7 47.1 47.1 47.1 45.3 45.3...
  • Page 42 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (8.5 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 09 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 71.7 71.7 80.8 69.0 69.0 77.9 66.2 66.2 74.8 63.2...
  • Page 43 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (8.5 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 09 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 89.2 89.2 90.4 86.4 86.4 88.7 83.4 83.4 87.0 80.0 80.0...
  • Page 44 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (8.5 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 09 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 113.9 113.9 128.6 108.9 108.9 123.1 103.7 103.7 117.5 98.2 98.2 111.4 92.3 92.3 105.1 86.2 86.2...
  • Page 45 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (10 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 12 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 44.3 44.3 48.7 42.8 42.8 47.9 41.3 41.3 46.6 39.9 39.9...
  • Page 46 Performance data (cont) COOLING CAPACITIES — FIRST STAGE, PART LOAD (10 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 12 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 63.9 63.9 72.0 61.7 61.7 69.5 59.4 59.4 66.9 56.7...
  • Page 47 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (10 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 12 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 59.4 59.4 59.4 57.9 57.9 57.9 56.0 56.0 56.0 53.8 53.8...
  • Page 48 Performance data (cont) COOLING CAPACITIES — SECOND STAGE, PART LOAD (10 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 12 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 83.8 83.8 94.7 80.1 80.1 90.8 76.1 76.1 86.5 71.9...
  • Page 49 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (10 TONS) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 12 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 89.2 89.2 91.2 86.2 86.2 89.5 82.8 82.8 87.7 78.9 78.9...
  • Page 50 Performance data (cont) COOLING CAPACITIES — THIRD STAGE, FULL LOAD (10 TONS) (cont) AMBIENT TEMPERATURE (°F) 48LC*B SIZE 12 EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) EAT (db) 132.5 132.5 149.6 126.7 126.7 143.2 120.3 120.3 136.4 113.6 113.6 129.0 106.3 106.3 121.1 98.6 98.6 112.5 90.3 90.3 103.4 SHC 115.3 132.5 149.6 110.0 126.7 143.2 104.3 120.3 136.4 98.1 113.6 129.0 91.6 106.3 121.1 84.5...

  • Page 51: Static Pressure Adders

    Performance data (cont) STATIC PRESSURE ADDERS 48LC*B07 PRESSURE DROP — LOW LEAK ECONOMIZER AIRFLOW (cfm) 1800 1950 2100 2250 2400 2550 2700 2850 3000 Low Leak Economizer 0.04 0.05 0.06 0.07 0.09 0.10 0.12 0.13 0.15 Pressure Drop for Low Leak Economizer (Size 07) 0.18 0.16 0.14...
  • Page 52 Performance data (cont) ESP ADDER FOR GAS HEAT EXCHANGER (SIZE 07, VERTICAL SUPPLY) 1800 1950 2100 2250 2400 2550 2700 2850 3000 10 Cell to 9 Cell 0.01 0.02 0.02 0.03 0.03 0.04 0.05 0.05 0.06 10 Cell to 7 Cell 0.01 0.02 0.02...
  • Page 53 Performance data (cont) PRESSURE DROP FOR GAS HEAT EXCHANGER (SIZES 08-12 VERTICAL SUPPLY) 2000 2500 3000 3500 4000 4500 5000 5 Cell 0.03 0.04 0.05 0.07 0.09 0.11 0.13 6 Cell 0.03 0.05 0.07 0.09 0.11 0.13 0.16 8 Cell 0.04 0.06 0.08...
  • Page 54 Performance data (cont) ECONOMIZER, BAROMETRIC, AND POWER EXHAUST PERFORMANCE HORIZONTAL ECONOMIZERS 2500 2000 1500 6 Ton 7.5-12.5 Ton 1000 0.05 0.15 0.25 Return Duct Static Pressure (in. wg) 6 Ton 7.5-12.5 Ton 0.00 0.10 0.20 0.30 0.40 0.50 Static Pressure Delta (in. wg)
  • Page 55 Performance data (cont) VERTICAL ECONOMIZERS 2500 2000 1500 6 Ton 7.5-12.5 Ton 1000 0.05 0.15 0.25 Return Duct Static Pressure (in. wg) 6 Ton 7.5- 12.5 Ton 0.00 0.10 0.20 0.30 0.40 0.50 Static Pressure Delta (in. wg)
  • Page 56 Performance data (cont) VERTICAL POWER EXHAUST PERFORMANCE RETURN DUCT STATIC PRESSURE (in. wg) Vertical Power Exhaust (cfm) 3239 2974 2642 2244 1780 1249 Power Exhaust Performance 4000 3000 2000 1000 Static Pressure Difference (in. wg)

  • Page 57: Fan Data

    Variable-speed motors are exempt from binations would work, Carrier recommends the lower EPACT compliance requirements. horsepower option. 5. For information on the electrical properties of Carrier motors, please see the electrical information section of this book. 48LC*B07 — 6 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in.
  • Page 58 Fan data (cont) 48LC*B07 — 6 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1800 0.25 0.38 0.52 0.67 0.82 1950 0.30 0.43 0.58 0.73 0.90 2100 0.35 0.49 0.65 0.81 0.98 2250 0.41 0.56 0.72 0.89 1.07 2400 0.48 0.63 0.80...
  • Page 59 Fan data (cont) 48LC*B08 — 7.5 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 2250 0.26 0.49 0.76 1.07 1.40 2438 0.29 0.53 0.81 1.13 1.47 2625 0.33 0.57 0.86 1.19 1.54 2813 0.37 0.62 0.92 1.25 1.61 3000 0.42 0.67 0.98...
  • Page 60 Fan data (cont) 48LC*B08 — 7.5 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 2250 0.28 0.52 0.80 1.09 1.40 2438 0.32 0.57 0.86 1.16 1.48 2625 0.35 0.62 0.92 1.24 1.57 2813 0.40 0.67 0.98 1.32 1.67 3000 0.45 0.73 1.05...
  • Page 61 Fan data (cont) 48LC*B09 — 8.5 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 2550 0.31 0.55 0.84 1.16 1.51 2763 0.36 0.61 0.90 1.23 1.59 2975 0.41 0.66 0.97 1.31 1.67 3188 0.47 0.73 1.04 1.39 1.76 3400 0.54 0.80 1.12...
  • Page 62 Fan data (cont) 48LC*B09 — 8.5 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 2550 0.34 0.60 0.89 1.21 1.54 2763 0.39 0.66 0.97 1.30 1.64 2975 0.44 0.72 1.04 1.39 1.75 3188 0.51 0.79 1.13 1.49 1.86 3400 0.58 0.87 1.22...
  • Page 63 Fan data (cont) 48LC*B12 — 10 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 3000 0.42 0.67 0.98 1.32 1.69 3250 0.49 0.75 1.06 1.41 1.79 3500 0.58 0.84 1.16 1.52 1.91 3750 0.68 0.94 1.27 1.63 2.03 4000 0.79 1.06 1.39...
  • Page 64 Fan data (cont) 48LC*B12 — 10 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 3000 0.45 0.73 1.05 1.40 1.76 3250 0.53 0.82 1.15 1.51 1.90 3500 0.62 0.91 1.26 1.64 2.04 3750 0.72 1.02 1.38 1.77 2.19 4000 0.83 1.14 1.51...
  • Page 65 Fan data (cont) PULLEY ADJUSTMENT — FAN RPM AT MOTOR PULLEY SETTINGS MOTOR PULLEY TURNS OPEN (RPM) 48LC*B MOTOR/DRIVE UNIT COMBO Standard Static — — 3 Phase Medium Static — — High Static — — 1150 1120 1089 1059 1029 Standard Static —...

  • Page 66: Electrical Data

    Electrical data ELECTRICAL INFORMATION VOLTAGE RANGE COMP 1 COMP 2 OFM (ea) 48LC*B V-Ph-Hz UNIT WATTS TYPE EFF AT FULL LOAD 208-3-60 13.2 81.5% 81.5% HIGH 84.5% 230-3-60 13.2 81.5% 81.5% HIGH 84.5% 460-3-60 81.5% 81.5% HIGH 84.5% 575-3-60 81.5% 81.5% HIGH 84.5%...
  • Page 67 Electrical data (cont) UNIT WIRE/FUSE OR HACR BREAKER SIZING DATA (6 TO 10 TONS, NO CO) NO CO OR UNPWRD CO NO PE WITH PE (PWRD FR/UNIT) NOM. UNIT SIZE V-Ph-Hz TYPE DISC. SIZE DISC. SIZE FUSE OR FUSE OR HACR BRKR HACR BRKR 48LC*B07...
  • Page 68 Electrical data (cont) UNIT WIRE/FUSE OR HACR BREAKER SIZING DATA (6 TO 10 TONS, WITH POWERED CO) WITH PWRD CO NO PE WITH PE (PWRD FR/UNIT) UNIT NOM. SIZE V-Ph-Hz TYPE DISC. SIZE DISC. SIZE FUSE OR FUSE OR HACR BRKR HACR BRKR 48LC*B07 208/230-3-60...
  • Page 69 Electrical data (cont) UNIT WIRE SIZING DATA WITH FACTORY-INSTALLED HACR BREAKER (6 TO 10 TONS, NO CO) NO CO OR UNPWRD CO NO PE WITH PE (PWRD FR/UNIT) UNIT NOM. SIZE V-Ph-Hz TYPE DISC. SIZE DISC. SIZE HACR BRKR HACR BRKR 48LC*B07 208/230-3-60 35/35...
  • Page 70 Electrical data (cont) UNIT WIRE SIZING DATA WITH FACTORY-INSTALLED HACR BREAKER (6 TO 10 TONS, NO CO) WITH PWRD CO NO PE WITH PE (PWRD FR/UNIT) UNIT NOM. SIZE V-Ph-Hz TYPE DISC. SIZE DISC. SIZE HACR BRKR HACR BRKR 48LC*B07 208/230-3-60 39/39 50/50...
  • Page 71 Electrical data (cont) 3-STAGE COOLING W/3-SPEED INDOOR FAN MOTOR, SIZES 07-12 (6-10 TONS) — HIGH SCCR VOLTAGE COMP 1 COMP 2 OFM (ea) HIGH MODEL V-Ph-Hz RANGE SCCR EFF at WATTS TYPE Full Load 48LCB*07 208-3-60 13.2 81.5% 81.5% HIGH 84.5% 230-3-60 81.5%...
  • Page 72 Electrical data (cont) UNIT WIRE/FUSE OR HACR BREAKER SIZING DATA, 3-SPEED INDOOR FAN MOTOR, SIZES 07-12 (6 TO 10 TONS) — HIGH SCCR NO CO OR UNPWR CO HIGH NO PE WITH PE (PWRD FR/UNIT NOM. MODEL SCCR FUSE or DISC.
  • Page 73 Electrical data (cont) Legend and Notes for Electrical Data NOTES: 1. In compliance with NEC requirements for multimotor and combina- Tables, pages 66-72. tion load equipment (refer to NEC Articles 430 and 440), the over- current protective device for the unit shall be fuse or HACR LEGEND breaker.
  • Page 74 48LC*B07 VAV-RTU OPEN CONTROL WIRING DIAGRAM...
  • Page 75 48LC*B08-12 VAV-RTU OPEN CONTROL WIRING DIAGRAM...

  • Page 76: Typical Wiring Diagrams

    Typical wiring diagram (cont) 48LC*B07 TYPICAL POWER WIRING DIAGRAM...
  • Page 77 Typical wiring diagram (cont) 48LC*B08-12 TYPICAL POWER WIRING DIAGRAM...

  • Page 78: Sequence Of Operation

    The VAV-RTU Open control is designed to provide VAV system operation when using a 48LCB chassis small pack- Occupied Heating aged rooftop and Carrier i-Vu ® Open VAV terminal con- Optionally, the user may enable occupied heating, which trols.
  • Page 79 SA temperature, the first cooling stage will be disabled. The control will support Airside Linkage to accommodate Minimum Ventilation system operation using Carrier VAV terminal controls. The VAV-RTU Open will receive zone information (occupancy The economizer minimum position will be adjusted as status, occupied and unoccupied zone temperatures, occu- required based on the supply fan speed.

  • Page 80: Application Data

    Motor Limits, Break Horsepower (bhp) not be required to run, which will provide exceptional Due to the internal design of Carrier units, the air path, energy savings due to less power draw, improved system and specially designed motors, the full horsepower (maxi-...

  • Page 81: System Overview

    “safety factors” life, and maintains even, comfortable temperatures. Please to the calculated load are signs of oversizing air condition- contact your local Carrier representative for assistance. ers. Oversizing the air conditioner leads to poor humidity SYSTEM OVERVIEW...

  • Page 82: Guide Specifications

    A. 23 09 13.23.A. Space terminal sensors indicate GO operation as well as a fault LED indicator for thermostat mis-wiring, no fan 1. Carrier zone air terminal space sensors shall be operation and safety switches. available with capabilities of combining: 4.
  • Page 83 Guide specifications (cont) technician to correctly wire and or trouble- Morning Warm-up above, except it will not be limited shoot the rooftop unit. by the transition into an occupied period. 4. Automatic reset, motor thermal overload E. 23 09 93.13 E. Heating and Cooling Setpoint Sepa- protector.
  • Page 84 I. 23 09 93.13 I. Minimum Ventilation — The econo- trol will support Airside Linkage to accommodate sys- mizer minimum position will be adjusted as required tem operation using Carrier VAV terminal controls. based on the supply fan speed. Two user configurable The VAV-RTU Open will receive zone information minimum economizer positions will be provided.
  • Page 85 10,000 hours of data and time clock retention during power outages. 6.01 23 40 13.13 Packaged VAV, Rooftop Units: l. Shall have built-in support for Carrier techni- A. 23 40 13.13.A. Standard filter section cian tool. 1. Shall consist of factory-installed, low velocity, m.
  • Page 86 Guide specifications (cont) when temperature and/or humidity are b. Integrated Ultra Low Leak Models: below setpoints. 1) Integrated, gear driven opposing modu- 5) Shall be equipped with gear driven lating blade design type capable of simul- dampers for both the outdoor ventilation taneous economizer and compressor air and the return air for positive air operation.
  • Page 87 Guide specifications (cont) 15) Economizer controller shall accept a 14. High efficiency motors listed shall meet 2 to 10 vdc CO sensor input for section 313 of the Energy Independence and IAQ/DCV control. In this mode, damp- Security Act of 2007 (EISA 2007). ers shall modulate the outdoor air C.
  • Page 88 Guide specifications (cont) 4. Base of unit shall have a minimum of 4 locations b. Unit shall have one factory installed, tool- for thru-the-base gas and electrical connections less, removable, filter access panel. (factory installed or field installed), standard. c. Panels covering control box, indoor fan, 5.
  • Page 89 Guide specifications (cont) 4. Optional Stainless Steel Heat Exchanger e. Corrosion durability of fin stock shall be con- construction. firmed through testing to have no visible corrosion after 48 hour immersion in a a. Use energy saving, direct-spark ignition room temperature solution of 5% salt, system.
  • Page 90 Guide specifications (cont) allow change out of power element and bulb safely diverting harmful shaft voltages and without removing the valve body. bearing currents to ground. b. Refrigerant filter drier. Solid core design. 2. Variable Frequency Drive (VFD). For indoor fan motor controlled by duct static pressure c.
  • Page 91 Guide specifications (cont) natural gas unit for use with liquefied pro- 2) A transformer shall not be included. pane, up to 2000 ft (610 m) elevation. 3) Outlet shall be factory-installed and b. Additional accessory kits may be required for internally mounted with easily accessible applications above 2000 ft (610 m) elevation.
  • Page 92 208/230-v and 460-v units. interface with rooftop unit or other equipment. Carrier Corporation • Syracuse, New York 13221 6-22 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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