Specifications

ManualsBrandsCarrier ManualsPrint & Scan50TCQD

50TCQD17---D24

Single Package Heat Pump/Electric Heat

Nominal15to20Tons

With Puron

(R---410A) Refrigerant

Service and Maintenance Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS 1....................

UNIT ARRANGEMENT AND ACCESS 3...........

SUPPLY FAN (BLOWER) SECTION 4..............

HEAT PUMP REFRIGERATION SYSTEM 6.........

THERMOSTATIC EXPANSION VALVE (TXV) 11....

PURON



(R--410A) REFRIGERANT 14.............

COOLING CHARGING CHARTS 15................

CONVENIENCE OUTLETS 18....................

HEAT PUMP CONTROLS 20......................

PROTECTIVE CONTROLS 21.....................

COMMERCIAL DEFROST CONTROL 21...........

ELECTRIC HEATERS 24.........................

SMOKE DETECTORS 26.........................

PREMIERLINK



CONTROL 36...................

RTU--OPEN CONTROL SYSTEM 37................

SENSORY/ACCESSORY INSTALLATION 37........

ADDITIONAL RTU--OPEN INSTALLATION AND

TROUBLESHOOTING 37.........................

PRE--START-UP/START--UP 39....................

START-UP, GENERAL 39.........................

START-UP, PREMIERLINK CONTROLS 41........

START-UP, RTU--OPEN CONTROL 41..............

FASTENER TORQUE VALUES 41.................

APPENDIX I. MODEL NUMBER SIGNIFICANCE 42...

APPENDIX II. PHYSICAL DATA 44................

APPENDIX III. ELECTRICAL DATA 46.............

APPENDIX IV. ELECTRICAL INFORMATION 48....

APPENDIX V. WIRING DIAGRAMS 54.............

APPENDIX VI. FAN PERFORMANCE 54...........

APPENDIX VI. MOTORMASTER SENSOR

LOCATIONS 67.................................

UNIT START-UP CHECKLIST 69..................

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment

can be hazardous due to system pressure and electrical

components. Only tra ined and qualified service personnel

should install, repair, or service air-conditioning

equipment. Untrained personnel can perform only the

basic maintenance functions such as replacing filters.

Trained service personnel should perform all other service

and maintenance operations.

When working on a ir-conditioning equipment, observe

precautions in the literature, tags and labels attached to

the unit, and other safety precautions that can apply.

Follow all safety codes. Wear approved safety glasses and

leather work gloves. Use quenching cloth for unbrazing

operations. Have fire extinguishers available for all

brazing operations.

Read these instructions thoroughly and follow all

warnings or cautions attached to the unit. Consult local

building codes and National Electri cal Code (NEC) for

special requirements.

Recognize safety information. This is the safety--ALERT

symbol

. When you see this symbol on the unit and in

instructions or manual s, be aware of the potential for

physical injury hazards.

Understand the signal words DANGER, WARNING,and

CAUTION. These words are used with the safety--ALERT

symbol. DANGER indicates a hazardous situation which,

if not avoided, will result in death or severe personal

injury. WARNING indicates a hazardous situation which,

if not avoided, could result in death or personal injury.

CAUTION indicates a hazardous situation which, if not

avoided, could result in minor to moderate injury or

product and property damage. NOTICE is used to address

practices not related to physical injury. NOTE is used to

highlight suggestions which will result in enhanced

installation, reliability, or operation.

Summary of content (70 pages)

PAGE 1
50TCQD17---D24 Single Package Heat Pump/Electric Heat Nominal 15 to 20 Tons With PuronR (R---410A) Refrigerant Service and Maintenance Instructions TABLE OF CONTENTS APPENDIX VI. FAN PERFORMANCE . . . . . . . . . . . 54 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1 APPENDIX VI. MOTORMASTER SENSOR LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . 3 SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . .
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! WARNING ! FIRE, EXPLOSION HAZARD Failure to follow this warning could result in death, serious personal injury and/or property damage. Never use air or gases containing oxygen for leak testing or for operating refrigerant compressors. Pressurized mixtures of air or gases containing oxygen can lead to an explosion. ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death.
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UNIT ARRANGEMENT AND ACCESS S Ensure indoor coils are clean S Check supply blower motor amperage Electric Heating: General Fig. 1 and Fig. 2 show general unit arrangement and access locations.
PAGE 4
Observe the flow direction arrows on the side of each filter frame when reinstalling. Economizer and Manual Outside Air Hood Screen 50TCQ The Manual Outside Air Hood Screen is secured by three screws and a retainer angle across the top edge of the hood. See Fig. 3. C09090 Fig. 3 - Screens Installed on Outdoor-- Air Hood (Sizes D08-- 09s Shown) the blower housing. A fixed-- pitch driver pulley is attached to the fan shaft and an adjustable-- pitch driver pulley is on the motor.
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1. Loosen the four front and rear motor mounting plate bolts. 2. Loosen the two jack bolt jam nuts. 3. Turn the two jack bolts counterclockwise to loosen bringing the motor closer to the blower. 4. Remove the belt by gently lifting the old belt over one of the pulleys. 5. Install the new belt by gently sliding the belt over both pulleys. and then sliding the motor and plate away from the fan housing until proper tension is achieved.
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HEAT PUMP REFRIGERATION SYSTEM Bearings: The fan system uses bearings featuring concentric split locking collars. A Torx T25 socket head cap screw is used to tighten the locking collars. Tighten the locking collar by holding it firmly against the inner race of the bearing and tightening the socket head cap screw. Torque the socket head cap screw 55 - 60 in-- lb (6.2 - 6.8 Nm). See Fig. 8.
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Periodic Clean Water Rinse: 7. Clean the outer surfaces with a stiff brush in the normal manner. Use a water hose or other suitable equipment to flush down between the two coil sections to remove dirt and debris. 8. Secure inner and outer coil rows together with a field-- supplied fastener. 9. Reposition the outer coil section and remove the coil corner post from between the top panel and center post. Reinstall both coil corner posts and access panel. Replace all screws. See Fig. 9.
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Totaline Environmentally Sound Coil Cleaner Application Equipment: S 2.5 gal (9.5L) garden sprayer S Water rinse with low velocity spray nozzle 50TCQ CAUTION UNIT DAMAGE HAZARD Failure to follow this caution can result in corrosion and damage to the unit. Harsh chemicals, household bleach, acid or basic cleaners should not be used to clean outdoor or indoor coils of any kind.
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FILTER DRIER LPS/LOC 2B FILTER DRIER ACCUTROL COOLING LIQUID LINES 1B DFT1 TXV 2 1A COMP 2 1D OUTDOOR COIL STRAINER HPS1 INDOOR COIL COMP 1 1C STRAINER HEATING LIQUID LINES 2C C12383 Fig. 12 - Typical Unit Piping Schematic with TXV Valves on the Indoor Coils TO EVAPORATOR COIL CIRCUITS FROM LIQUID HEADER enters the Accutrol tees from the coil end. The refrigerant exits the tee at the side port and enters the liquid transfer header (see Fig. 14).
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To Condensing Circuit From Transfer Header C09231 50TCQ From Subcooler Circuit C09232 Fig. 16 - Heat Pump Accutrol— Flow as Condenser Function/ Exiting Subcooler Pass Each liquid line has a check valve to prevent back-- flow through the liquid line in its opposite mode. This ensures correct flow direction through the filter driers and the strainers preventing emptying of off-- mode liquid lines into the evaporator-- function coil circuits. See Fig. 17 on page 11. Table 1.
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Apply compressor refrigerant oil to the check valve core’s bottom O-- ring. Install the fitting body and torque to 9610 in-- lbs (10.9  1 Nm). Do not over-- tighten. CORE SEAT (Part No. EC39EZ067) 1/2-20 UNF RH 0.596 45 o o WASHER O-RING 5/8” HEX .47 1/2” HEX This surface provides a metal to metal seal when torqued into the seat. Appropriate handing is required to not scratch or dent the surface. DEPRESSOR PER ARI 720 +.01/-.035 FROM FACE OF BODY 50TCQ 30 7/16-20 UNF RH C08453 Fig.
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CAPILLARY TUBE DIAPHRAGM PUSHRODS FEEDER TUBES INLET COIL 50TCQ OUTLET NEEDLE VALVE SPRING DISTRIBUTOR BULB EXTERNAL EQUALIZER TUBE C09228 Fig. 18 - Thermostatic Expansion Valve (TXV) Operation Replacing TXV ! CAUTION PERSONAL INJURY HAZARD Failure to follow this caution can result in injury to personnel and damage to components. Always wear approved safety glasses, work gloves and other recommended Personal Protective Equipment (PPE) when working with refrigerants. 1. Recover refrigerant. 2.
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SIZE DESIGNATION D17 D24 NOMINAL TONS REFERENCE 15 20 EXAMPLE: Model 50TCQ*D17 THERMAL EXPANSION (TXV) VALVE Outdoor Temperature . . . . . . . . . . . . . . . . . . 85_F (29_C) Suction Pressure . . . . . . . . . . . . . . . . . 140 psig (965 kPa) Suction Temperature . . . . . . . . . . . . . . . . . . 55_ F (13_C) Refer to Fig. 20 through Fig. 23 for Cooling Charging Charts. 50TCQ Compressors Lubrication: Compressors are charged with the correct amount of oil at the factory.
PAGE 14
PURONR (R--410A) REFRIGERANT This unit is designed for use with Puron (R-- 410A) refrigerant. Do not use any other refrigerant in this system. 50TCQ Puron (R-- 410A) refrigerant is provided in pink (rose) colored cylinders. These cylinders are available with and without dip tubes; cylinders with dip tubes will have a label indicating this feature. For a cylinder with a dip tube, place the cylinder in the upright position (access valve at the top) when removing liquid refrigerant for charging.
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COOLING CHARGING CHARTS CAUTION DO NOT OVERCHARGE UNIT OVERCHARGING UNIT INCREASES THE RISK OF NUISANCE HIGH PRESSURE SWITCH TRIPS 15 TON HEAT PUMP CHARGING CHART - R410A REFRIGERANT (COOLING MODE) - CIRCUIT A 120 Add Charge if Above the Curve 100 80 60 50TCQ Outdoor Coil Leaving Temperature, (Degrees F) 140 Remove Charge if Below the Curve 40 20 150 200 250 300 350 400 450 500 550 600 Compressor Discharge Pressure, (psig) 50HE501614 - 2.
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CAUTION DO NOT OVERCHARGE UNIT OVERCHARGING UNIT INCREASES THE RISK OF NUISANCE HIGH PRESSURE SWITCH TRIPS 20 TON HEAT PUMP CHARGING CHART - R410A REFRIGERANT (COOLING MODE) - CIRCUIT A Outdoor Coil Leaving Temperature, (Degrees F) 120 Add Charge if Above the Curve 100 80 60 Remove Charge if Below the Curve 40 20 150 200 250 300 350 400 450 500 550 600 650 Compressor Discharge Pressure, (psig) 50HE501616 - 2.0 IN HEATING MODE, RECLAIM CHARGE AND RECHARGE UNIT PER NAMEPLATE C12027 Fig.
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! WARNING FIRE, EXPLOSION HAZARD Failure to follow this warning could result in death, serious personal injury and/or property damage. Never use air or gases containing oxygen for leak testing or for operating refrigerant compressors. Pressurized mixtures of air or gases containing oxygen can lead to an explosion. CAUTION 3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start-- up.
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Table 4. Heating and Cooling Troubleshooting PROBLEM 50TCQ Compressor and Outdoor Fan Will Not Start. CAUSE REMEDY Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Determine root cause. Defective thermostat, contactor, transformer, control relay, or capacitor. Replace component. Insufficient line voltage. Determine cause and correct. Incorrect or faulty wiring. Check wiring diagram and rewire correctly.
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! WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death. Units with convenience outlet circuits can use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Apply Lockout/Tagout to this switch, if necessary. Convenience Outlets: Two types of convenience outlets are offered on 50TCQ models: Non--powered and unit--powered.
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when the unit disconnect or HACR switch is open. See Fig. 27. 50TCQ Duty Cycle — the unit-- powered convenience outlet has a duty cycle limitation. The transformer is intended to provide power on an intermittent basis for service tools, lamps, etc; it is not intended to provide 15 amps loading for continuous duty loads (such as electric heaters for overnight use). Observe a 50% limit on circuit loading above 8 amps (i.e., limit loads exceeding 8 amps to 30 minutes of operation every hour).
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PROTECTIVE CONTROLS Compressor Protection Over-- current The compressor has internal line-- break motor protection. Over-- temperature: The compressor has an internal protector to protect it against excessively high discharge gas temperatures. High Pressure Switch: The system is provided with a high pressure switch mounted on the discharge line. The switch is stem-- mounted and brazed into the discharge tube. Trip setting is 630 psig  10 psig (4344  69 kPa) when hot.
PAGE 22
The DFB is located in the 50TCQ’s main control box (see Fig. 30). All connections are factory-- made through harnesses to the unit’s CTB, to IFC (belt-- drive motor), reversing valve solenoids and to defrost thermostats. DEFROST BOARD (HP ONLY) C12403 50TCQ DIP Switches Fig. 30 - Defrost Control Board (DFB) Location Speed-Up Jumpers C09275 Fig. 29 - Defrost Control Board (DFB) Arrangement Table 7.
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Compressor control — The DFB receives inputs indicating Stage 1 Cooling, Stage 2 Cooling (sizes 08 and 09 only) and Stage 1 Heating from the space thermostat or unit control system (PremierLink or RTU-- OPEN); it generates commands to start compressors with or without reversing valve operation to produce Stage 1 Cooling (one compressor), Stage 2 Cooling (both compressors run) or Stage 1 Heating (both compressors run).
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sec/minute. (For example, the 90 minute run period is reduced to 9 seconds) The DFB will step the unit through a Heating cycle and a Defrost cycle using these reduced time periods. This mode ends after the Defrost cycle. Table 8. Dip Switch Position Switch No. 1 2 J J 1 1 0 1 0 50TCQ 90 minutes 2 J J 1 1 60 minutes 50TC units may be equipped with field-- installed accessory electric heaters.
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Table 1 – Heater Model Number * UNIT MODELS HEATER/ BASE UNIT VOLTAGE HEATER KW* FAN DISCHARGE STAGES CRHEATER270A00 50TCQ-D17—24 208/230--- 3--- 60 25 Horizontal 2 CRHEATER271A00 50TCQ-D17—24 208/230--- 3--- 60 50 Horizontal 2 CRHEATER272A00 50TCQ-D17—24 208/230--- 3--- 60 75 Horizontal 2 CRHEATER273A00 50TCQ-D17—24 460/400--- 3--- 60/50 25/17.4 Horizontal 2 CRHEATER274A00 50TCQ-D17—24 460/400--- 3--- 60/50 50/34.
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On 50TCQ units, all fuses are 60-- A. Single point boxes containing fuses for 208/230-- V applications use UL Class RK5 250-- V fuses (Bussman FRNR 60 or Shawmut TR 60R). Single point boxes for 460-- V and 575-- V applications use UL Class T 600-- V fuses (Bussman JJS 60 or Shawmut A6T 60). (Note that all heaters are qualified for use with a 60-- A fuse, regardless of actual heater ampacity, so only 60-- A fuses are necessary.
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Low-- Voltage Control Connections — Pull the low-- voltage control leads from the heater module(s) VIO and BRN (two of each if two modules are installed; identify for Module #1) - to the 4-- pole terminal board TB4 located on the heater bulkhead to the left of Heater #1. Connect the VIO lead from Heater #1 to terminal TB4-- 1. Connect the VIO lead from Heater #2 to terminal TB4-- 2. Connect both BRN leads to terminal TB4-- 3. See Fig. 35.
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blowers, change over air handling systems, notify the fire alarm control panel, etc. The sensor uses a process called Differential Sensing to prevent gradual environmental changes from triggering false alarms. A 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. to the sampling tube be connected. See “Completing Installation of Return Air Smoke Sensor” for installation steps.
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Completing Installation of Return Air Smoke Sensor 13. Reinstall plastic cover. 14. Installation is now complete. Refer to Sensor and Controller section for operation. FIOP Smoke Detector Wiring and Response All units: FIOP smoke detector is configured to automatically shut down all unit operations when a smoke condition is detected. See Fig. 45, Typical Smoke Detector System Wiring. Highlight A: JMP 3 is factory-- cut, transferring unit control to smoke detector.
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PICK-UP TUBE EMT TO SEAL TIGHT CONNECTOR BRACKET SMOKE SAMPLING BOX EXPLODED DETAIL SCREW (2) 50TCQ KNOCKOUT LOCATION FOR HORIZONTAL HORIZONTAL ASSEMBLY KNOCKOUT LOCATION FOR VERTICAL VERTICAL ASSEMBLY C09685 Fig.
PAGE 31
B D C F A C08246 Fig. 45 - Typical Smoke Detector System Wiring Sensor and Controller Tests Controller Alarm Test Sensor Alarm Test The controller alarm test checks the controller’s ability to initiate and indicate an alarm state. The sensor alarm test checks a sensor’s ability to signal an alarm state. This test requires that you use a field provided SD-- MAG test magnet. NOTICE OPERATIONAL TEST NOTICE Failure to follow this NOTICE can result in an unnecessary evacuation of the facility.
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Dirty Controller Test NOTICE The dirty controller test checks the controller’s ability to initiate a dirty sensor test and indicate its results. OPERATIONAL TEST NOTICE Failure to follow this NOTICE can result in an unnecessary evacuation of the facility. Changing the dirty sensor test operation will put the detector into the alarm state and activate all automatic alarm responses.
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Remote Test/Reset Station Dirty Sensor Test NOTICE The test/reset station dirty sensor test checks the test/reset station’s ability to initiate a sensor dirty test and indicate the results. It must be wired to the controller as shown in Fig. 46 and configured to operate the controller’s supervision relay. For more information, see “Changing the Dirty Sensor Test.” OPERATIONAL TEST NOTICE Failure to follow this NOTICE can result in an unnecessary evacuation of the facility.
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6. Connect power to the duct detector then perform a sensor alarm test. S If a wiring fault between a sensor and the controller, the controller’s Trouble LED turns on but not the sensor’s. HVAC DUCT SAMPLING TUBE Trouble SENSOR HOUSING Alarm Power Test/reset switch OPTIC PLATE AIRFLOW RETAINER CLIP C07298 Fig. 48 - Controller Assembly OPTIC HOUSING Indicators NOTE: All troubles are latched by the duct smoke detector.
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Sensor’s Power LED is Off: 1. Check the controller’s Power LED. If it is off, determine why the controller does not have power and make the necessary repairs. 2. Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required. Controller’s Power LED is Off: 1. Ensure the circuit supplying power to the controller is operational. If not, make sure JP2 and JP3 are set correctly on the controller before applying power. 2.
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RTU--OPEN CONTROL SYSTEM RTU--Open Controller The RTU-- OPEN controller is an integrated component of the Carrier rooftop unit. Its internal application programming provides optimum performance and energy efficiency. RTU-- OPEN enables the unit to run in 100% stand-- alone control mode, Carrier’s I-- Vu Open network, or a Third Party Building Automation System (BAS).
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C10818 Fig.
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PRE--START--UP START--UP ! 2. Read and follow instructions on all WARNING, CAUTION, and INFORMATION labels attached to, or shipped with, unit. WARNING ! 50HCQ PERSONAL INJURY HAZARD Failure to follow this warning could result in personal injury or death. PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could result in personal injury or death. Wear approved safety glasses and leather gloves when handling refrigerants.
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Unit Preparation Ensure the unit has been installed in accordance with installation instructions and applicable codes. Return--Air Filters 2. Turn off power to the unit and apply lockout/tagout procedures. 3. Reverse any two of the unit power leads. 4. Re-- energize to the compressor. Check pressures. The suction and discharge pressure levels should now move to their normal start-- up levels.
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Ventilation (Continuous Fan) Perform System Check--Out 1. Check all power and communication connections ensuring the are properly connected and securely tightened. 2. At the unit, check fan and system controls for proper operation. 3. At the unit, check electrical system and connections of any optional electric reheat coil. 4. Ensure all area around the unit is clear of construction dirt and debris. 5. Ensure final filters are installed in the unit. Dust and debris can adversely affect system operation. 6.
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APPENDIX I. MODEL NUMBER SIGNIFICANCE Table 12. Model Number Nomenclature 1 2 3 5 0 T C Q D 2 ____ Unit Heat Type 50 = Elect. Heat Pkg.
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Table 13.
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APPENDIX II. PHYSICAL DATA 50TCQ17 50TCQ24 2 / 2 / Scroll 16.0/16.5 630 / 505 24 / 45 50 / 100 2 / 2 / Scroll 23.4/23.4 630 / 505 24 / 45 50 / 100 Cu / Al 3/8--- in 3 / 15 19.56 3/4--- in Cu / Al 3/8--- in 4 / 15 22.00 3/4--- in Standard Static Motor Qty / Drive type Max BHP RPM range Motor frame size Fan Qty / Type Fan Diameter (in) 1 / Belt 2.2 518--- 713 56 2 / Centrifugal 15 x 15 1 / Belt 4.
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APPENDIX II. PHYSICAL DATA (cont.) 50TCQ17 50TCQ24 Standard Static Motor Qty / Drive type Max BHP RPM range Motor frame size Fan Qty / Type Fan Diameter (in) 1 / Belt 2.2 518--- 713 56 2 / Centrifugal 18 x 15/15 X 11 1 / Belt 4.9 676--- 819 56 2 / Centrifugal 18 x 15/15 X 11 Medium Static Motor Qty / Drive type Max BHP RPM range Motor frame size Fan Qty / Type Fan Diameter (in) 1 / Belt 3.3 518--- 733 56 2 / Centrifugal 18 x 15/15 X 11 1 / Belt 6.
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APPENDIX III. ELECTRICAL DATA Table 55 – ELECTRIC HEAT UNIT NOM. V ---PH ---HZ ELECTRICAL DATA IFM TYPE STD 208/230--- 3--- 60 MED HIGH STD 50TCQ --- D17 460--- 3--- 60 MED HIGH STD 575--- 3--- 60 MED HIGH LEGEND APP PWR C.O.
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APPENDIX III. ELECTRICAL DATA (cont.) TABLE 16. ELECTRIC HEAT UNIT NOM. V ---PH ---HZ ELECTRICAL DATA IFM TYPE STD MED 208/230--- 3--- 60 HIGH MED--- High Eff HIGH--- High Eff STD MED 50TCQD24 460--- 3--- 60 HIGH MED--- High Eff HIGH--- High Eff STD MED 575--- 3--- 60 HIGH MED--- High Eff HIGH--- High Eff 20 TON ELECTRIC HEATER PART NUMBER CRHEATER NOMINAL (KW) APPLICATION (KW) APPLICATION OUTPUT (MBH) 279A00/270A00 25.0 18.8/23.0 64.1/78.3 280A00/271A00 50.0 37.6/45.
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APPENDIX IV. ELECTRICAL INFORMATION 575--- 3--- 60 460--- 3--- 60 230--- 3--- 60 208--- 3--- 60 230--- 3--- 60 460--- 3--- 60 575--- 3--- 60 50TCQ---24 208--- 3--- 60 50TCQ---17 UNIT V ---PH ---HZ Table 17. 2-- Stage Cooling - 15 Tons (50TCQD17) and 20 Tons (50TCQD24) COMP 1 VOLTAGE RANGE MIN 187 187 414 518 187 187 414 518 MAX 253 253 506 633 253 253 506 633 RLA 25.0 25.0 12.2 9 33.3 33.3 17.9 12.8 LRA 164.0 164.0 100.0 78 239.0 239.0 125 80 COMP 2 RLA 25.0 25.
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APPENDIX IV. ELECTRICAL INFORMATION (cont.) NOM. V ---PH ---HZ UNIT Table 55 – MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O. ELECTRIC HEATER IFM TYPE 208/230---3---60 STD MED HIGH 460---3---60 50TCQ---17 STD MED HIGH 575---3---60 STD MED HIGH NO C.O. or UNPWR C.O. NO P.E. Nom (kW) FLA --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.0 56.3/75.0 --25.0 50.0 75.0 --25.0 50.0 75.0 --25.0 50.0 75.0 --24.8 49.6 74.4 --24.8 49.6 74.4 --24.8 49.6 74.4 --52.
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APPENDIX IV. ELECTRICAL INFORMATION (cont.) NOM. V ---PH ---HZ UNIT Table 75 - MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O. ELECTRIC HEATER IFM TYPE STD 208/230---3---60 MED HIGH MED--High Eff HIGH--High Eff STD 460---3---60 HIGH MED--High Eff HIGH--High Eff STD MED 575---3---60 50TCQ---24 MED HIGH MED--High Eff HIGH--High Eff NO C.O. or UNPWR C.O. NO P.E. Nom (kW) FLA --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.
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APPENDIX IV. ELECTRICAL INFORMATION (cont.) NOM. V ---PH ---HZ UNIT Table 55 – MCA/MOCP DETERMINATION W/ PWRD C.O. ELECTRIC HEATER IFM TYPE 208/230---3---60 STD MED HIGH 460---3---60 50TCQ---17 STD MED HIGH 575---3---60 STD MED HIGH w/ PWRD C.O. NO P.E. Nom (kW) FLA --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.0 56.3/75.0 --18.8/25.0 37.6/50.0 56.3/75.0 --25.0 50.0 75.0 --25.0 50.0 75.0 --25.0 50.0 75.0 --24.8 49.6 74.4 --24.8 49.6 74.4 --24.8 49.6 74.4 --52.1/60.1 104.2/120.
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APPENDIX IV. ELECTRICAL INFORMATION (cont.) NOM. V ---PH ---HZ UNIT TABLE 18 – (cont.) MCA/MOCP DETERMINATION W/ PWRD C.O. ELECTRIC HEATER IFM TYPE w/ PWRD C.O. NO P.E. Nom (kW) FLA MCA 208/230---3---60 460---3---60 575---3---60 50TCQ---24 DISC. SIZE MOCP ----97.5 125.0 18.8/25.0 52.1/60.1 162.7/172.7 175/175 37.6/50.0 104.2/120.3 227.8/217.8 250/250 56.3/75.0 156.4/180.4 253.9/277.9 300/300 ----95.3 125.0 18.8/25.0 52.1/60.1 160.5/170.5 175/175 MED 37.6/50.0 104.2/120.3 225.6/215.6 250/225 56.
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APPENDIX IV. ELECTRICAL INFORMATION (cont.) Legend and Notes for Tables 48 through 52 LEGEND: CO DISC FLA IFM LRA MCA MOCP PE UNPWR CO ------------------- Convenient outlet Disconnect Full load amps Indoor fan motor Locked rotor amps Minimum circuit amps Maximum over current protection Power exhaust Unpowered convenient outlet NOTES: 1.
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APPENDIX V.
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APPENDIX V. WIRING DIAGRAMS C12398 Fig.
PAGE 55
APPENDIX V. WIRING DIAGRAMS C12399 Fig.
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APPENDIX V. WIRING DIAGRAMS C12400 Fig.
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APPENDIX V. WIRING DIAGRAMS C12401 Fig.
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APPENDIX V. WIRING DIAGRAMS C12402 Fig.
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APPENDIX V. WIRING DIAGRAMS C12359 Fig.
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APPENDIX V. WIRING DIAGRAMS 50HE500751 50HE500891 J F C12402 Fig.
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APPENDIX VI. FAN PERFORMANCE General Fan Performance Notes: 1. Interpolation is permissible. Do not extrapolate. 2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static pressure caused by any FIOPs or accessories. 3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories may add static pressure losses. 4. The Fan Performance tables offer motor/drive recommendations.
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APPENDIX VI. FAN PERFORMANCE (cont.) Table 55 – 50TCQ-- D17 15 TON HORIZONTAL SUPPLY / RETURN AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) CFM 0.2 0.4 0.6 0.8 RPM BHP RPM BHP RPM BHP 4000 422 0.66 510 1.07 582 1.52 4500 451 0.83 535 1.27 605 1.75 5000 482 1.04 561 1.51 629 2.02 5500 518 1.28 588 1.78 654 2.32 6000 546 1.57 617 2.10 680 6500 579 1.90 646 2.46 7000 613 2.20 677 2.87 7500 648 2.71 708 8000 683 3.20 740 1.0 BHP RPM BHP 646 2.
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APPENDIX VI. FAN PERFORMANCE (cont.) Table 55 – 50TCQ-- D17 15 TON VERTICAL SUPPLY / RETURN AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 0.2 CFM 0.4 0.6 0.8 1.0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 3900 409 0.46 509 0.73 594 1.03 670 1.36 738 1.71 4400 430 0.57 525 0.86 607 1.18 681 1.52 748 1.89 4800 451 0.69 542 1.00 622 1.34 693 1.70 758 2.08 5300 473 0.83 560 1.16 637 1.51 706 1.89 770 2.30 5700 496 0.98 579 1.34 653 1.71 720 2.
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APPENDIX VI. FAN PERFORMANCE (cont.) Table 55 – 50TCQ-- D24 20 TON HORIZONTAL SUPPLY / RETURN AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) CFM 0.2 0.4 RPM BHP 6000 546 6500 579 7000 0.6 0.8 1.0 RPM BHP RPM BHP RPM BHP RPM BHP 1.57 617 2.10 680 2.67 738 3.29 790 3.93 1.90 646 2.46 707 3.07 763 3.71 814 4.39 613 2.28 677 2.87 735 3.51 789 4.19 839 4.89 7500 648 2.71 708 3.34 764 4.01 816 4.72 865 5.46 8000 683 3.20 740 3.86 794 4.57 846 5.
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APPENDIX VI. FAN PERFORMANCE (cont.) Table 55 – 50TCQ-- D24 20 TON VERTICAL SUPPLY / RETURN AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) CFM 0.2 0.4 0.6 0.8 1.0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 4500 429 0.57 528 0.81 612 1.06 685 1.32 751 1.60 5000 454 0.72 549 0.99 629 1.26 701 1.54 765 1.84 5500 480 0.91 570 1.19 648 1.49 718 1.79 781 2.10 6000 506 1.12 593 1.43 668 1.74 736 2.07 798 2.40 6500 533 1.36 616 1.70 689 2.04 754 2.
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APPENDIX VI. FAN PERFORMANCE (cont.) Table 20. Pulley Adjustment - Standard Tier - Horizontal 3 phase 3 phase 24 17 17 UNIT MOTOR/DRIVE COMBO Standard Static Medium Static High Static Standard Static Medium Static High Static 0 680 780 912 863 1021 1176 0.5 663 763 895 846 984 1129 1 647 747 879 828 984 1129 MOTOR PULLEY TURNS OPEN 1.5 2 2.5 3 3.
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APPENDIX VII. MOTORMASTER SENSOR LOCATIONS SENSOR LOCATION C12035 Fig.
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Copyright 2009 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 06/12 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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START-UP CHECKLIST (Remove and Store in Job File) I. PRELIMINARY INFORMATION MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: II.
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Copyright 2009 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 06/12 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.