Page 1: Table Of Contents
48GC**04-06 Single Package Rooftop Gas Heat/Electric Cooling Unit with Puron ® (R-410A) Refrigerant 3 to 5 Nominal Tons Service and Maintenance Instructions CONTENTS Dirty Controller Test ......24 Dirty Sensor Test .
Page 2: Safety Considerations
Ventilation (Continuous Fan) ....62 FASTENER TORQUE VALUES ....62 WARNING START-UP, RTU OPEN CONTROLS .
Page 3: Unit Arrangement And Access
Heating UNIT ARRANGEMENT AND ACCESS • Heat exchanger flue passageways cleanliness General • Gas burner condition Figures 1 and 2 show general unit arrangement and access • Gas manifold pressure locations. • Heating temperature rise Filter Access Panel Economizer or Outside Air Damper •...
Page 4: Supply Fan (Blower) Section
All low-voltage wiring should be routed through the provided raceway built into the corner post of the unit or secured to the unit 17 1/4" control box with the electrical conduit in order to provide UL- required clearance between high and low-voltage wiring. Supply Fan (Direct-Drive) All GC units have the EcoBlue™...
Page 5 lower fan rpms. This offset is factory set and controlled by the UCB. If fan speed verification is being done with a strobe, fan speed should be verified in all unit operation modes. Units with Electro-mechanical controls The Fan Speed set up controls are located on the lower section of the Unit Control Board (UCB).
Page 6 ESP in. wg Factory Setting: Calculator 9.0 V 1500 Field Setting: 1625 Record field setting here 10.0 1750 1875 2000 Switch Range: 2125 2250 4.1 - 7.5 2375 6.9 - 8.7 2500 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range designed for maximum field adjustment potential.
Page 7 Low Speed Fan Adjustment (Single Phase and 3-Phase units) Units with SystemVu™ controls 2-Pin DIP Switch On units equipped with the factory-installed SystemVu controller the Fan Speed settings are accessed through the SystemVu inter- The 2-pin DIP switch is common to both the single and 3-phase face.
Page 8 FAN SPEED SETUP (RPM) MAIN MENU: SETTINGS UNIT CONFIGURATIONS INDOOR FAN IDF VENT SPD -RPM IDF HEAT SPD -RPM IDF LOW COOL SPD -RPM IDF HIGH COOL SPD -RPM IDF FREE COOL SPD -RPM DETERMINE RPM FROM BELOW 48TC003136 REV. A ESP in.
Page 9 TROUBLESHOOTING THE ECM MOTOR EcoBlue™ motors are designed with several built-in protections included in the motor software. If the motor detects a fault it will safely shut down. For temperature related faults the motor re- quires a line voltage reset to continue operation. For all others, the motor will resume operation automatically as soon as the fault condition is cleared.
Page 10 Removing the Motor and Fan Assembly NOTE: Due to press fit design of composite Rotor on Motor, it is highly recommended that any time a motor is replaced the fan ro- tor is replaced as well. The rest of the assembly may be reused. See Fig.
Page 11: Staged Air Volume
Install four no. 10-32 x 1/2 in. hex head machine screws Reinstalling Motor and Fan Assembly (P/N: AD07AB126) to connect aluminum stator to motor. See Fig. 17. Tighten to 23 in.-lb (2.6 Nm). Align motor harness/grommet at ~7 o’clock (facing Fit grommet on motor wire harness into keyhole feature on installer) and align the bottom flats on right and left sides the side of the stator and pull wire harness out through...
Page 12: Cooling
Totaline environmentally balanced coil cleaner is nonflammable, COOLING hypo-allergenic, non-bacterial, and a USDA accepted biodegrad- able agent that will not harm the coil or surrounding components such as electrical wiring, painted metal surfaces, or insulation. Use WARNING of non-recommended coil cleaners is strongly discouraged since coil and unit durability could be affected.
Page 13: Evaporator Coil
CAUTION Coil Clips UNIT DAMAGE HAZARD Failure to follow this caution may result in reduced unit performance or unit shutdown. High velocity water from a pressure washer, garden hose, or compressed air should never be used to clean a coil. The force of the water or air jet will bend the fin edges and increase airside pressure drop.
Page 14: Thermostatic Expansion Valve (Txv)
If economizer or two-position damper is installed, remove coil has a brazed connection, use a file or a tubing cutter to economizer by disconnecting Molex plug and removing remove the mechanical flare nut from the equalizer line. ®1 mounting screws. Then use a new coupling to braze the equalizer line to the Slide filters out of unit.
Page 15: Puron (R-410A) Refrigerant
59.9 Amount of refrigerant charge is listed on the unit’s nameplate. Re- fer to Carrier GTAC2-5 Charging, Recovery, Recycling and Rec- lamation training manual and the following procedures. Add Charge if Above the Curve 48.8 Unit panels must be in place when unit is operating during the charging procedure.
Page 16 4 Ton Mid Tier Hot Gas Reheat R-410A CHARGING CHART 3 Ton Mid Tier Hot Gas Reheat R-410A CHARGING CHART (Unit must run on Sub-cooling mode) (Unit must run on Sub-cooling mode) 59.9 59.9 Add Charge if Above the Curve Add Charge if Above the Curve 48.8 48.8...
Page 17: Compressor
5 Ton Mid Tier Hot Gas Reheat R-410A CHARGING CHART WARNING (Unit must run on Sub-cooling mode) FIRE, EXPLOSION HAZARD 59.9 Failure to follow this warning could result in death, serious personal injury and/or property damage. Add Charge if Above The Curve Never use non-certified refrigerants in this product.
Page 18: Filter Drier
Filter Drier Replace whenever refrigerant system is exposed to atmosphere. Only use factory specified liquid-line filter driers with working pressures no less than 650 psig. Do not install a suction-line filter drier in liquid line. A liquid-line filter drier designed for use with Puron refrigerant is required on every unit.
Page 19: Troubleshooting Cooling System
Troubleshooting Cooling System Refer to Table 4 for additional troubleshooting topics. Table 4 — Troubleshooting SYMPTOM CAUSE SOLUTION Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Determine root cause. Defective thermostat, contactor, transformer, Replacement component.
Page 20: Convenience Outlets
Press the gasket over the screw heads. Slip the backing CONVENIENCE OUTLETS plate over the screw heads at the keyhole slots and align with the gasket; tighten the 2 screws until snug (do not over-tighten). WARNING Mount the weatherproof cover to the backing plate as ELECTRICAL OPERATION HAZARD shown in Fig.
Page 21: Duty Cycle
necessary for operation are factory-provided and mounted. The unit is factory-configured for immediate smoke detector shut- down operation; additional wiring or modifications to unit termi- nal board may be necessary to complete the unit and smoke de- tector configuration to meet project requirements. System The smoke detector system consists of a 4-wire controller and one or 2 sensors.
Page 22: Smoke Detector Locations
action to shut down fans and blowers, change over air handling systems, notify the fire alarm control panel, etc. The sensor uses a process called differential sensing to prevent Supply Air gradual environmental changes from triggering false alarms. A Smoke Detector rapid change in environmental conditions, such as smoke from a fire, causes the sensor to signal an alarm state but dust and debris accumulated over time does not.
Page 23: Completing Installation Of Return Air Smoke
RETURN AIR SMOKE DETECTOR SENSOR WITH Return Air Smoke Detector ECONOMIZER (Operating Position Shown) The sampling tube is inserted through the side plates of the econo- mizer housing, placing it across the return air opening on the unit basepan. See Fig. 39. The holes in the sampling tube face down- ward, into the return air stream.
Page 24: Sensor And Controller Tests
Fig. 42 — Typical Smoke Detector System Wiring ADDITIONAL APPLICATION DATA Refer to the application data document “Factory Installed Smoke IMPORTANT: Failure to follow this ALERT can result in Detectors for Small and Medium Rooftop Units 2 to 25 Tons” for an unnecessary evacuation of the facility....
Page 25: Changing The Dirt Sensor Test
Table 5 — Dirty LED Test FLASHES DESCRIPTION 0-25% dirty. (Typical of a newly installed detector) Smoke Detector Controller 25-50% dirty 51-75% dirty − Auxiliary 76-99% dirty Equipment DIRTY SENSOR TEST PROCEDURE Hold the test magnet where indicated on the side of the sensor housing for 2 seconds.
Page 26: Indicators
Table 6 — Detector Indicators HVAC Duct Sampling CONTROL OR DESCRIPTION INDICATOR Tube Sensor Resets the sensor when it is in the alarm or trouble Housing Magnetic test/ state. Activates or tests the sensor when it is in the reset switch normal state.
Page 27: Protective Devices
SENSOR’S POWER LED IS OFF CONDENSER FAN MOTOR PROTECTION Check the controller’s Power LED. If it is off, determine The condenser fan motor is internally protected against over- temperature. why the controller does not have power and make the nec- essary repairs.
Page 28: Fuel Types And Pressures
SUPPLY PRESSURE SWITCH Fuel Types and Pressures The LP conversion kit includes a supply low pressure switch. The NATURAL GAS switch contacts (from terminal C to terminal NO) will open the The 48GC unit is factory-equipped for use with natural gas (NG) gas valve power whenever the supply line pressure drops below fuel at elevation under 2000 ft (610 m).
Page 29: Burners And Igniters
Heater Tube Assembly Seal Strips, Sponge Rubber Regulator Gasket Regulator Baffle Assembly (Low NO x Only) Retainer Flue Cover Assembly Pressure Switch Hose Connection Vestibule Plate Flue Baffle (Low NO x Only) Inducer Fan-Motor Assembly Burner Assembly Fig. 50 — Heat Exchanger Assembly To inspect blower wheel, shine a flashlight into draft hood open- Orifice projection ing.
Page 30 Heat Exchanger Support Rack Limit Switch Heat Exchanger Cover Panel Unit Center Burner Post Partition Panel Fig. 52 — Heat Exchanger Access — Internal Panels, Center Post and HX Rack Locations CLEANING AND ADJUSTMENT Manifold Pressure Tap Remove burner rack from unit as described in “Removal and Replacement of Gas Train”...
Page 31 Disconnect the igniter wires and sensor wires at the inte- 11. Remove the screws around the vestibule plate. grated gas controller (IGC). 12. Remove the nuts holding the heat exchanger support rack Disconnect a gas pipe union and remove the gas manifold to the fan deck.
Page 32: Burner Ignition
GAS VALVE LED (light-emitting diode). A single LED (see Fig. 57) on the IGC provides a visual display of operational or sequential prob- All 3-phase models (except Low NOx) are equipped with 2-stage lems when the power supply is uninterrupted. When a break in gas valves.
Page 33 RED LED - STATUS Fig. 57 — Integrated Gas Control (IGC) Board...
Page 34: Troubleshooting Heating System
MINIMUM HEATING ENTERING AIR TEMPERATURE Thermostat When operating on first stage heating, the minimum tempera- ture of air entering the dimpled heat exchanger is 50°F continu- ous and 45°F intermittent for standard heat exchangers and 40°F continuous and 35°F intermittent for stainless steel heat OALT exchangers.
Page 35 Table 13 — IGC Board LED Alarm Codes a,b,c,d ACTION TAKEN BY FLASH DESCRIPTION RESET METHOD PROBABLE CAUSE CONTROL CODE Normal Operation — — — Loss of power to the IGC. Check 5 amp fuse Hardware Failure No gas heating. —...
Page 36: Systemvu Control System
Through the SystemVu interface, the user can access all of the The SystemVu control system is fully communicating and inputs and outputs to check on their values and status, config- cable-ready for connection to the Carrier Comfort Network ® ure operating parameters, and evaluate the current decision sta- (CCN), Carrier i-Vu ®...
Page 37: Rtu Open Control System
The RTU Open controller is an integrated component of the RTU Open. Some of these can be factory or field installed, while Carrier rooftop unit. Its internal application programming pro- others are only field installable. The RTU Open controller may vides optimum performance and energy efficiency.
Page 38: Additional Rtu Open Installation And Troubleshooting
Outside Air WARNING Temperature Sensor EconoMi$er X Harness ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury, death and/or equipment damage. Disconnect and lockout/tag-out electrical power before wiring the RTU Open controller. Additional RTU Open Installation and Trouble- shooting Additional installation, wiring and troubleshooting information for the RTU Open Controller can be found in the following...
Page 39: Economi$Er ® 2
EconoMi$er ® IMPORTANT: The optional EconoMi$er 2 does not include a controller. The EconoMi$er 2 is operated by a 4 to 20 mA signal from an existing field-supplied controller. See Fig. 64 for wiring information. BLACK Tranformer Ground BLUE 500 OHM Resistor VIOLET PINK...
Page 40: Economi$Er Iv (Field-Installed Accessory)
EconoMi$er IV (Field-Installed Accessory) IMPORTANT: For GC rooftop units EconoMi$er IV is only available as a field-installed accessory. ECONOMI$ER IV STANDARD SENSORS Troubleshooting instructions are enclosed. A functional view of the EconoMi$er ® IV is shown in Fig. 65. Typical settings, sensor ranges, and jumper positions are also shown.
Page 41 Table 14 — EconoMi$er IV Input/Output Logic INPUTS OUTPUTS Demand Enthalpy Compressor N Terminal Controlled Ventilation Outdoor Return Stage 1 Stage 2 Occupied Unoccupied (DCV) High (Free Cooling Minimum position Closed LED Off) Below set (DCV LED Modulating (between Modulating (between Off) minimum position and full-...
Page 42 Table 15 — Supply Air Sensor DIP Switch Changeover Temperature/Resistance Values Position Temperature TEMPERATURE (°F) RESISTANCE (ohms) 48°F –58 220,250 1 2 3 –40 100,000 –22 53,010 53°F –4 29,091 1 2 3 16,500 9,795 55°F 5,970 1 2 3 3,747 58°F 3,000...
Page 43 HORIZONTAL ECONOMIZER BAROMETRIC RELIEF FLOW VERTICAL ECONOMIZER BAROMETRIC RELIEF FLOW 2500 2500 Horizontal Economizers Vertical Economizers 2000 2000 1500 1500 3-5 Ton 3-5 Ton 1000 1000 0.05 0.15 0.25 0.05 0.15 0.25 RETURN DUCT STATIC PRESSURE (in. wg) RETURN DUCT STATIC PRESSURE (in. wg) HORIZONTAL ECONOMIZER RETURN AIR PRESSURE DROP VERTICAL ECONOMIZER RETURN AIR PRESSURE DROP 6000...
Page 44 Exhaust Set Point Adjustment (29) (32) (35) (38) (41) (43) The exhaust set point will determine when the exhaust fan runs based on damper position (if accessory power exhaust is in- CONTROL POINT CONTROL APPROX. °F (°C) stalled). The set point is modified with the Exhaust Fan set point CURVE AT 50% RH (27)
Page 45 TR and N. When the timeclock contacts are Use setting 1 or 2 for Carrier equipment. closed, the EconoMi$er IV control will be in occupied mode. When the timeclock contacts are open (removing the 24-v signal Press Clear and Mode buttons.
Page 46 Put 620-ohm resistor across terminals SR and +. DCV MINIMUM AND MAXIMUM POSITION Set minimum position, DCV set point, and exhaust poten- To check the DCV minimum and maximum position: tiometers fully CCW (counterclockwise). Make sure EconoMi$er IV controller preparation proce- 10.
Page 47: Economi$Er X (Factory Option)
Economizer Module EconoMi$er X (Factory Option) The module is the core of the EconoMi$er X system. The module The EconoMi$er X system is an expandable economizer control ® is mounted in the unit’s control box, and includes the user inter- system, which includes a W7220 economizer module (controller) face for the system.
Page 48 INPUTS Sensors NOTE: A Mixed Air (MA) analog sensor is required on all W7220 units; either an Outdoor Air (OA) sensor for dry bulb change over or an OA bus sensor for outdoor enthalpy change over is required in addition to the MA sensor. An additional Re- turn Air (RA) bus sensor can be added to the system for differen- tial enthalpy or dry bulb changeover.
Page 49 Table 17 — Economizer Module — Table 18 — HH57AC081 Sensor Wiring Terminations Right Hand Terminal Blocks TERMINAL TYPE DESCRIPTION LABEL TYPE DESCRIPTION Number Label Top Right Terminal Blocks S-BUS Communications AUX2 I 24 vac IN The first terminal is not used. S-BUS S-BUS (Enthalpy Control...
Page 50 INTERFACE OVERVIEW Press the (Enter) button to display the value of the This section describes how to use the EconoMi$er X user inter- ® currently displayed item. face for: Press the ▲ button to increase (change) the displayed • Keypad and menu navigation parameter value.
Page 51 Table 20 — W7220 Menu Structure PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT FIRST STAGE COOLING DEMAND (Y1–IN) ECONO AVAIL YES/NO YES = economizing available; the system can use outside air for free cooling when required FIRST STAGE COOLING RELAY OUTPUT ECONOMIZING YES/NO YES = outside air being used for 1 stage cooling...
Page 52 Table 20 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT MECH COOL ON Displays stage of mechanical cooling that is active. 0, 1, or 2 HEAT STAGES ON Displays the stage of heat pump heating that is active. STATUS SUPPLY FAN SPEED (CONT)
Page 53 Table 20 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR 0 to 50°F ERV OAT SP 32°F TEMPERATURE SETPOINT increment by 1 Only displayed when AUX1 O = ERV Exhaust fan set point for single speed units.
Page 54 Table 20 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT COOLING STAGE 3 DELAY 0 min, 5 min, Delay after stage 2 cool has been active. Turns on second stage of 15 min, then cooling when economizer is first stage and mechanical cooling is STG3 DLY 2.0h...
Page 55 Table 20 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT DISCHARGE AIR S-BUS SENSOR ERROR DA SYLK T ERR — — Discharge air sensor has failed or become disconnected — check wiring then replace sensor if the alarm continues. OUTSIDE AIR TEMPERATURE SENSOR ERROR OA SENS T ERR —...
Page 56 Enthalpy Settings When the OA temperature, OA humidity and OA dew point are all below the selected boundary, the economizer sets the econo- When the OA temperature, enthalpy and dew point are below the mizing mode to YES, economizing is available. respective setpoints, the Outdoor Air can be used for economiz- ing.
Page 57 Standard or Single Speed Fan Operation The W (heating mode) is not controlled by the W7220 but it re- quires the status to know where to position the OA damper for FAN TYPE = 1SPEED is not used on 48GC units. minimum position for the fan speed.
Page 58 2SP H/C (2 Speed Heat/Cool) Fan Operation fan speed during heat, the economizer FAN TYPE must be set to keep the appropriate outside air intake. FAN TYPE = 2SP H/C is not used on 48GC units. On single phase 48GC 3 to 5 ton units, if reduced the heating 3 Speed Fan Operation (single phase units only) fan speed is lower than the high cooling speed and higher than The W7220 controller does not actually control the fan speed or...
Page 59 CHECKOUT Press the (Enter) button to select the item. RUN? Inspect all wiring connections at the economizer module’s termi- appears. nals, and verify compliance with the installation wiring diagrams. Press the (Enter) button to start the test. The unit For checkout, review the Status of each configured parameter and pauses and then displays IN PROGRESS.
Page 60: Pre-Start-Up/Start-Up
c. Inspect all field-wiring and factory-wiring connections. PRE-START-UP/START-UP Be sure that connections are completed and tight. Be sure that wires are not in contact with refrigerant tubing or sharp edges. WARNING d. Inspect coil fins. If damaged during shipping and han- PERSONAL INJURY HAZARD dling, carefully straighten fins with a fin comb.
Page 61: Return-Air Filters
Compressor Rotation WARNING CAUTION If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal in- EQUIPMENT DAMAGE HAZARD jury or loss of life. Failure to follow this caution can result in premature wear and Do not store or use gasoline or other flammable vapors and damage to equipment.
Page 62 Set system switch selector at HEAT position and fan Ventilation (Continuous Fan) switch at AUTO. or ON position. Set heating temperature Set fan and system selector switches at ON and OFF positions, re- lever above room temperature. spectively. Evaporator fan operates continuously to provide con- The induced-draft motor will start.
Page 63 APPENDIX A — MODEL NUMBER NOMENCLATURE Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Factory Assigned 48 = Gas Heat Packaged Rooftop 0 = Standard 1 = LTL Model Series — WeatherMaster ® GC = 17.4 SEER and 16.5 SEER2 High Eff.
Page 64 APPENDIX B — PHYSICAL DATA 48GC 3 Ton Physical Data 48GC UNIT 48GC*J04 48GC*K04 48GC*T04 NOMINAL TONS BASE UNIT OPERATING WT (lb) 513/468 513/468 513/468 REFRIGERATION SYSTEM No. Circuits/No. Compressors/Type 1 / 1 / 2-Stage Scroll 1 / 1 / 2-Stage Scroll 1 / 1 / 2-Stage Scroll Puron ®...
Page 65 APPENDIX B — PHYSICAL DATA 48GC 3 Ton Physical Data (cont) 48GC UNIT 48GC*J04 48GC*K04 48GC*T04 EVAPORATOR FAN AND MOTOR (cont) High Static 3 Phase Motor Qty/Drive Type 1 / Direct 1 / Direct — Maximum Cont Bhp 1.07 1.07 —...
Page 66 APPENDIX B — PHYSICAL DATA 48GC 4 Ton Physical Data 48GC UNIT 48GC*J05 48GC*K05 48GC*T05 NOMINAL TONS BASE UNIT OPERATING WT (lb) 555/510 555/510 555/510 REFRIGERATION SYSTEM No. Circuits/No. Compressors/Type 1 / 1 / 2-Stage Scroll 1 / 1 / 2-Stage Scroll 1 / 1 / 2-Stage Scroll Puron ®...
Page 67 APPENDIX B — PHYSICAL DATA 48GC 4 Ton Physical Data (cont) 48GC UNIT 48GC*J05 48GC*K05 48GC*T05 EVAPORATOR FAN AND MOTOR (cont) High Static 3 Phase Motor Qty/Drive Type 1 / Direct 1 / Direct — Maximum Cont Bhp 1.96 1.96 —...
Page 68 APPENDIX B — PHYSICAL DATA 48GC 5 Ton Physical Data 48GC UNIT 48GC*J06 48GC*K06 48GC*T06 NOMINAL TONS BASE UNIT OPERATING WT (lb) 600/555 600/555 600/555 REFRIGERATION SYSTEM No. Circuits/No. Compressors/Type 1 /1 / 2-Stage Scroll 1 / 1 / 2-Stage Scroll 1 /1 / 2-Stage Scroll Puron ®...
Page 69 APPENDIX B — PHYSICAL DATA 48GC 5 Ton Physical Data (cont) 48GC UNIT 48GC*J06 48GC*K06 48GC*T06 EVAPORATOR FAN AND MOTOR (cont) High Static 3 Phase Motor Qty/Drive Type 1 / Direct 1 / Direct — Maximum Cont Bhp 2.43 2.43 —...
Page 70 APPENDIX B — PHYSICAL DATA 48GC 3 to 5 Ton Gas Heat Data — 1-Phase Units 48GC UNIT 48GC**04 48GC**05 48GC**06 GAS CONNECTION No. of Gas Valves Natural Gas Supply Line Pressure (in. 4-13 / 0.18-0.47 4-13 / 0.18-0.47 4-13 / 0.18-0.47 wg)/(psig) Liquid Propane Supply Line Pressure (in.
Page 71 APPENDIX B — PHYSICAL DATA 48GC 3 to 6 Ton Gas Heat Data — 3-phase units 48GC UNIT 48GC**04 48GC**05 48GC**06 GAS CONNECTION No. of Gas Valves Natural Gas Supply Line Pressure (in. 4-13 / 0.18-0.47 4-13 / 0.18-0.47 4-13 / 0.18-0.47 wg)/(psig) Liquid Propane Supply Line Pressure (in.
Page 72 APPENDIX C — FAN PERFORMANCE For information on the electrical properties of Carrier motors, GENERAL FAN PERFORMANCE NOTES please see the Electrical information section of the Product Interpolation is permissible. Do not extrapolate. Data book for this model and size.
Page 73 APPENDIX C — FAN PERFORMANCE 48GCET04 Single Phase — 3 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1129 0.10 1356 0.17 1544 0.26 1708 0.35 1857 0.45 1182 0.11 1402 0.19 1586 0.28 1748 0.37 1894 0.47 1050...
Page 74 APPENDIX C — FAN PERFORMANCE 48GCET04 Single Phase — Medium Static — 3 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1129 1356 1544 1708 1857 1182 1402 1586 1748 1894 1050 1236 1449 1630 1789 1933 1125 1290...
Page 75 APPENDIX C — FAN PERFORMANCE 48GCEJ04 Three Phase — 3 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1129 0.10 1356 0.17 1544 0.26 1708 0.35 1857 0.45 1182 0.11 1402 0.19 1586 0.28 1748 0.37 1894 0.47 1050...
Page 76 APPENDIX C — FAN PERFORMANCE 48GCEJ04 Three Phase — Medium Static — 3 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1129 1356 1544 1708 1857 1182 1402 1586 1748 1894 1050 1236 1449 1630 1789 1933 1125 1290...
Page 77 APPENDIX C — FAN PERFORMANCE 48GCFT05 Single Phase — 4 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1262 0.21 1453 0.33 1614 0.45 1757 0.58 1888 0.72 1300 1333 0.25 1517 0.37 1674 0.50 1813 0.63 1942...
Page 78 APPENDIX C — FAN PERFORMANCE 48GCFT05 Single Phase — Medium Static — 4 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1262 1453 1614 1757 1888 1300 1333 1517 1674 1813 1942 1400 1405 1583 1735 1872 1997...
Page 79 APPENDIX C — FAN PERFORMANCE 48GCFJ05 Three Phase — 4 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1262 0.21 1452 0.33 1614 0.45 1757 0.58 1888 0.72 1300 1333 0.25 1516 0.37 1674 0.50 1813 0.63 1942...
Page 80 APPENDIX C — FAN PERFORMANCE 48GCFJ05 Three Phase — Medium Static — 4 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1262 1453 1614 1757 1888 1300 1333 1517 1674 1813 1942 1400 1405 1583 1735 1872 1997...
Page 81 APPENDIX C — FAN PERFORMANCE 48GCFT06 Single Phase — 5 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1387 0.28 1561 0.40 1711 0.53 1845 0.66 1966 0.80 1625 1473 0.34 1638 0.46 1784 0.60 1914 0.74 2034...
Page 82 APPENDIX C — FAN PERFORMANCE 48GCFT06 Single Phase — Medium Static — 5 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1387 1561 1711 1845 1966 1625 1473 1638 1784 1914 2034 1750 1560 1717 1859 1986 2103...
Page 83 APPENDIX C — FAN PERFORMANCE 48GCFJ06 Three Phase — 5 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1387 0.28 1560 0.40 1711 0.53 1845 0.66 1966 0.80 1625 1473 0.34 1638 0.46 1784 0.60 1915 0.74 2034...
Page 84 APPENDIX C — FAN PERFORMANCE 48GCFJ06 Three Phase — Medium Static — 5 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1387 1560 1711 1845 1966 1625 1473 1638 1784 1915 2034 1750 1561 1717 1858 1986 2103...
Page 85 APPENDIX C — FAN PERFORMANCE 48GCET04 Single Phase — 3 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1097 0.09 1331 0.16 1524 0.25 1692 0.34 1842 0.44 1146 0.10 1373 0.18 1562 0.27 1728 0.36 1877 0.46 1050...
Page 86 APPENDIX C — FAN PERFORMANCE 48GCET04 Single Phase — Medium Static — 3 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1097 1331 1524 1692 1842 1146 1373 1562 1728 1877 1050 1197 1416 1601 1765 1912 1125 1249...
Page 87 APPENDIX C — FAN PERFORMANCE 48GCEJ04 Three Phase — 3 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1097 0.09 1331 0.16 1524 0.25 1692 0.34 1842 0.44 1146 0.10 1373 0.18 1562 0.27 1728 0.36 1877 0.46 1050...
Page 88 APPENDIX C — FAN PERFORMANCE 48GCEJ04 Three Phase — Medium Static — 3 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1097 1331 1524 1692 1842 1146 1373 1562 1728 1877 1050 1197 1416 1601 1765 1912 1125 1249...
Page 89 APPENDIX C — FAN PERFORMANCE 48GCFT05 Single Phase — 4 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1217 0.19 1411 0.30 1576 0.42 1722 0.55 1855 0.68 1300 1283 0.23 1470 0.34 1631 0.46 1774 0.60 1904...
Page 90 APPENDIX C — FAN PERFORMANCE 48GCFT05 Single Phase — Medium Static — 4 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1217 1411 1576 1722 1855 1300 1283 1470 1631 1774 1904 1400 1351 1531 1688 1827 1955...
Page 91 APPENDIX C — FAN PERFORMANCE 48GCFJ05 Three Phase — 4 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1216 0.19 1411 0.30 1576 0.42 1722 0.55 1855 0.68 1300 1283 0.23 1470 0.34 1631 0.46 1774 0.60 1904...
Page 92 APPENDIX C — FAN PERFORMANCE 48GCFJ05 Three Phase — Medium Static — 4 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1216 1411 1576 1722 1855 1300 1283 1470 1631 1774 1904 1400 1351 1531 1687 1827 1955...
Page 93 APPENDIX C — FAN PERFORMANCE 48GCFT06 Single Phase — 5 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1335 0.25 1508 0.36 1661 0.49 1797 0.62 1921 0.75 1625 1418 0.30 1580 0.42 1727 0.55 1861 0.68 1983...
Page 94 APPENDIX C — FAN PERFORMANCE 48GCFT06 Single Phase — Medium Static — 5 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1335 1507 1660 1796 1921 1625 1417 1580 1727 1860 1982 1750 1502 1654 1796 1926 2046...
Page 95 APPENDIX C — FAN PERFORMANCE 48GCFJ06 Three Phase — 5 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1335 0.25 1507 0.36 1660 0.49 1796 0.61 1921 0.75 1625 1418 0.30 1579 0.42 1727 0.55 1860 0.68 1982...
Page 96 APPENDIX C — FAN PERFORMANCE 48GCFJ06 Three Phase — Medium Static — 5 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1335 1507 1660 1796 1921 1625 1418 1579 1727 1860 1982 1750 1502 1654 1797 1927 2046...
Page 97 APPENDIX D — WIRING DIAGRAMS Wiring Diagrams 48GC**04-06 UNITS SIZE VOLTAGE CONTROL (OVERLAY) PAGE POWER PAGE 04-05 208/230-1-60 48TC005554 48TC005574 Electro-Mechanical 208/230-3-60 48TC005550 48TC005573 W7220 Standard 460/575-3-60 48TC005552 48TC005575 Controller 208/230-1-60 48TC005719 48TC005574 Electro-Mechanical 208/230-3-60 48TC005634 48TC005573 W7220 Standard 460/575-3-60 48TC005636 48TC005575 Controller...
Page 98 APPENDIX D — WIRING DIAGRAMS Fig. B — 48GC**04-05 Electro-Mechanical Control Wiring Diagram — 208/230-1-60 (with W7220 Control)
Page 99 APPENDIX D — WIRING DIAGRAMS Fig. C — 48GC**04-05 Electro-Mechanical Control Wiring Diagram — 208/230-3-60 (with W7220 Control)
Page 100 APPENDIX D — WIRING DIAGRAMS Fig. D — 48GC**04-05 Electro-Mechanical Control Wiring Diagram — 460/575-3-60 (with W7220 Control)
Page 101 APPENDIX D — WIRING DIAGRAMS Fig. E — 48GC**06 Electro-Mechanical Control Wiring Diagram — 208/230-1-60 (with W7220 Control)
Page 102 APPENDIX D — WIRING DIAGRAMS Fig. F — 48GC**06 Electro-Mechanical Control Wiring Diagram — 208/230-3-60 (with W7220 Control)
Page 103 APPENDIX D — WIRING DIAGRAMS Fig. G — 48GC**06 Electro-Mechanical Control Wiring Diagram — 460/575-3-60 (with W7220 Control)
Page 104 APPENDIX D — WIRING DIAGRAMS Fig. H — 48GC**04-05 208/230-1-60 Unit with RTU Open Controller...
Page 105 APPENDIX D — WIRING DIAGRAMS Fig. I — 48GC**04-05 208/230-3-60 Unit with RTU Open Controller...
Page 106 APPENDIX D — WIRING DIAGRAMS Fig. J — 48GC**04-05 460/575-3-60 Unit with RTU Open Controller...
Page 107 APPENDIX D — WIRING DIAGRAMS Fig. K — 48GC**06 208/230-1-60 Unit with RTU Open Controller...
Page 108 APPENDIX D — WIRING DIAGRAMS Fig. L — 48GC**06 208/230-3-60 Unit with RTU Open Controller...
Page 109 APPENDIX D — WIRING DIAGRAMS Fig. M — 48GC**06 460/575-3-60 Unit with RTU Open Controller...
Page 110 APPENDIX D — WIRING DIAGRAMS Fig. N — 48GC**04-06 Power Wiring Diagram — 208/230-1-60...
Page 111 APPENDIX D — WIRING DIAGRAMS Fig. O — 48GC**04-06 Power Wiring Diagram — 208/230-3-60...
Page 112 APPENDIX D — WIRING DIAGRAMS Fig. P — 48GC**04-06 Power Wiring Diagram — 460/575-3-60...
Page 113 APPENDIX D — WIRING DIAGRAMS Fig. Q — 48GC**04-05 SystemVu™ Control Wiring Diagram (All Voltages)
Page 114 APPENDIX D — WIRING DIAGRAMS Fig. R — 48GC**06 SystemVu™ Control Wiring Diagram (All Voltages)
Page 115 APPENDIX D — WIRING DIAGRAMS Fig. S — 48GC**04-06 SystemVu™ Power Wiring Diagram — 208/230-1-60...
Page 116 APPENDIX D — WIRING DIAGRAMS Fig. T — 48GC**04-06 SystemVu™ Power Wiring Diagram — 208/230-3-60...
Page 117 APPENDIX D — WIRING DIAGRAMS Fig. U — 48GC**04-06 SystemVu™ Power Wiring Diagram — 460/575-3-60...
Page 118 Fig. X — 48GC**06 Outdoor Circuiting Sensor Location Fig. W — 48GC**05 Outdoor Circuiting © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480405-01 Printed in U.S.A.
Page 119 START-UP CHECKLIST FOR 48GC**04-06 SINGLE PACKAGE ROOFTOP GAS HEATING/ELECTRIC COOLING UNIT (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sec- tions of this Service and Maintenance document.
Page 120 (Y/N) _____ 10. Restore set points for thermostat and humidistat (Y/N) _____ © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480405-01 Printed in U.S.A.

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