Carrier 50TCA04-A07- Manual
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Table of Contents:
- Page 2 – UNIT ARRANGEMENT AND ACCESS; General; Routine Maintenance
- Page 3 – WARNING
- Page 5 – COOLING; Condenser Coil
- Page 7 – Evaporator Coil; Cleaning the Evaporator Coil; Refrigerant System Pressure Access Ports; PURON; Refrigerant Charge; No Charge
- Page 8 – To Use Cooling Charging Charts; SEAT
- Page 9 – COOLING CHARGING CHARTS
- Page 11 – Compressor; CAUTION; Filter Drier
- Page 12 – Table 1 – Cooling Service Analysis
- Page 13 – CONVENIENCE OUTLETS; ELECTRICAL OPERATION HAZARD; SMOKE DETECTORS
- Page 15 – Smoke Detector Locations; Location; Completing Installation of Return Air Smoke; Screws
- Page 16 – FIOP Smoke Detector Wiring and Response
- Page 17 – Controller Alarm Test; Dirty Controller Test; Dirty Sensor Test
- Page 18 – Changing the Dirt Sensor Test; To Configure the Dirty Sensor Test Operation; Remote Station Test; Remote Test/Reset Station Dirty Sensor Test; OPERATIONAL TEST HAZARD; OPERATIONAL TEST HAZARD; DETECTOR CLEANING; Cleaning the Smoke Detector
- Page 19 – Table 3 – Detector Indicators; INDICATORS; Normal State
- Page 20 – TROUBLESHOOTING
- Page 21 – Condenser Fan Motor Protection; Relief Device; ELECTRIC HEATERS; NOTE
- Page 22 – Single Point Boxes and Supplementary Fuses —; Safety Devices —; Completing Heater Installation; Field Power Connections —; Connections
- Page 23 – Temperature (SAT) Sensor on Small Rooftop Units
- Page 25 – SEN
- Page 26 – Table 6 – PremierLink Sensor Usage
- Page 28 – GRA
- Page 30 – tions; COVER REMOVED
- Page 32 – CCN Bus; ECONOMIZER SYSTEMS; The 50TC units may be equipped with a factory--installed
- Page 33 – Table 11 – EconoMi$er IV Input/Output Logic
- Page 34 – IMPORTANT; Outdoor Dry Bulb Changeover
- Page 35 – and LED Locations; Setpoints; Mounting Location
- Page 36 – Differential Enthalpy Control
- Page 37 – Exhaust Setpoint Adjustment; Damper Movement
- Page 38 – CO
- Page 40 – EconoMi$er IV Troubleshooting Completion; WIRING DIAGRAMS; PERSONAL INJURY HAZARD
- Page 42 – Initial Operation and Test; Memory Reset; Operating Sequence, Base Unit Controls
- Page 43 – Operating Sequence, PremierLink Control
- Page 45 – Table 13 – Available Cooling Stages
- Page 49 – Table 14 – Linkage Modes; FASTENER TORQUE VALUES
- Page 50 – Table 16 – Torque Values
- Page 52 – APPENDIX I. MODEL NUMBER SIGNIFICANCE; Model Number Nomenclature
- Page 53 – APPENDIX II. PHYSICAL DATA
- Page 54 – APPENDIX III. FAN PERFORMANCE; General Fan Performance Notes:; pressure caused by any FIOPs or accessories.
- Page 55 – Phase
- Page 56 – Phase
- Page 62 – Pulley Adjustment
- Page 63 – APPENDIX IV. ELECTRICAL DATA
- Page 69 – APPENDIX V. WIRING DIAGRAM LIST; Wiring Diagrams; Size; All
- Page 70 – APPENDIX VI. MOTORMASTER SENSOR LOCATIONS
- Page 73 – I. PRELIMINARY INFORMATION; ELECTRICAL
50TCA04---A07
Nominal 3 to 6 Tons
With Puron
®
(R410A) Refrigerant
Service and Maintenance Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . .
UNIT ARRANGEMENT AND ACCESS
2
. . . . . . . . . . .
SUPPLY FAN (BLOWER) SECTION
3
. . . . . . . . . . . . . .
COOLING
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PURON
R
(R--410A) REFRIGERANT
7
. . . . . . . . . . . . . .
COOLING CHARGING CHARTS
9
. . . . . . . . . . . . . . . . .
CONVENIENCE OUTLETS
13
. . . . . . . . . . . . . . . . . . . .
SMOKE DETECTORS
13
. . . . . . . . . . . . . . . . . . . . . . . . .
DETECTOR CLEANING
18
. . . . . . . . . . . . . . . . . . . . . . .
INDICATORS
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
20
. . . . . . . . . . . . . . . . . . . . . . . . .
PROTECTIVE DEVICES
20
. . . . . . . . . . . . . . . . . . . . . . .
ELECTRIC HEATERS
21
. . . . . . . . . . . . . . . . . . . . . . . . .
PREMIERLINK
T
CONTROL
23
. . . . . . . . . . . . . . . . . . .
ECONOMIZER SYSTEMS
32
. . . . . . . . . . . . . . . . . . . . .
FASTENER TORQUE VALUES
50
. . . . . . . . . . . . . . . . .
WIRING DIAGRAMS
50
. . . . . . . . . . . . . . . . . . . . . . . . .
APPENDIX I. MODEL NUMBER SIGNIFICANCE
52
.
APPENDIX II. PHYSICAL DATA
53
. . . . . . . . . . . . . . . .
APPENDIX III. FAN PERFORMANCE
54
. . . . . . . . . . .
APPENDIX IV. ELECTRICAL DATA
63
. . . . . . . . . . . . .
APPENDIX V. WIRING DIAGRAM LIST
69
. . . . . . . . .
APPENDIX VI. MOTORMASTER SENSOR
LOCATIONS
70
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNIT START-UP CHECKLIST
73
. . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel
should install, repair, or service air-conditioning
equipment. Untrained personnel can perform the basic
maintenance functions of replacing filters. Trained service
personnel should perform all other operations.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to
the unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations.
Have fire extinguishers available for all brazing
operations.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have
fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and National
Electrical 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 manuals, be alert to the potential for
personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety--alert
symbol. DANGER identifies the most serious hazards
which
will
result in severe personal injury or death.
WARNING signifies a hazard which
could
result in
personal injury or death. CAUTION is used to identify
unsafe practices which
may
result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which
will
result in enhanced
installation, reliability, or operation.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Before performing service or maintenance operations
on unit, turn off main power switch to unit. Electrical
shock and rotating equipment could cause injury.
!
WARNING
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Other Manuals for Carrier 50TCA04-A07
Summary
2 ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death.Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open...
3 located on the rear side of the unit, above the evaporator/return air access panel. (See Fig. 1.) To remove the filters: 1. Grasp the bottom flange of the upper panel.2. Lift up and swing the bottom out until the panel dis- engages and pulls out. 3. Reach inside and extract the filters from the fi...
5 Motor When replacing the motor, also replace the external--tooth lock washer (star washer) under the motor mounting base; this is part of the motor grounding system. Ensure the teeth on the lock washer are in contact with the motor’s painted base. Tighten motor mounting bolts to 120 +/-- 12 in--lb...
