Service and Maintenance Instructions
48TC**04 --- 16
Nominal 3 to 15 Tons
with Puron
(R---410A) Refrigerant
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . .
UNIT ARRANGEMENT AND ACCESS
3
. . . . . . . . . . .
ROUTINE MAINTENANCE
3
. . . . . . . . . . . . . . . . . . . . .
SUPPLY FAN (BLOWER) SECTION
6
. . . . . . . . . . . . . .
STAGED AIR VOLUME CONTROL (SAV) -- 2 SPEED
FAN WITH VARIABLE FREQUENCY
DRIVE (VFD)
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADDITIONAL VARIABLE FREQUENCY DRIVE
(VFD) INSTALLATION AND TROUBLESHOOTING. 8
SUPPLY FAN MOTOR
8
. . . . . . . . . . . . . . . . . . . . . . . . . .
COOLING
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EVAPORATOR COIL METERING DEVICES
13
. . . . . .
PURON
R
(R--410A) REFRIGERANT
16
. . . . . . . . . . . . .
COOLING CHARGING CHARTS
21
. . . . . . . . . . . . . . . .
COMPRESSOR
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONVENIENCE OUTLETS
36
. . . . . . . . . . . . . . . . . . . .
SMOKE DETECTORS
37
. . . . . . . . . . . . . . . . . . . . . . . . .
SENSOR AND CONTROLLER TESTS
41
. . . . . . . . . . .
INDICATORS
43
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROTECTIVE DEVICES
44
. . . . . . . . . . . . . . . . . . . . . . .
GAS HEATING SYSTEM
45
. . . . . . . . . . . . . . . . . . . . . .
PREMIERLINK
CONTROL
62
. . . . . . . . . . . . . . . . . . .
RTU--OPEN CONTROL SYSTEM
62
. . . . . . . . . . . . . . . .
SENSORY/ACCESSORY INSTALLATION
63
. . . . . . . .
HUMIDI--MIZER ADAPTIVE DEHUMIDIFICATION
SYSTEM
64
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECONOMIZER SYSTEMS
78
. . . . . . . . . . . . . . . . . . . . .
PRE--START--UP
87
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP, GENERAL
87
. . . . . . . . . . . . . . . . . . . . . . . .
START--UP, PREMIERLINK
CONTROLS
90
. . . . . . .
START--UP, RTU--OPEN CONTROLS
90
. . . . . . . . . . . .
FASTENER TORQUE VALUES
90
. . . . . . . . . . . . . . . . .
APPENDIX I. PHYSICAL DATA
91
. . . . . . . . . . . . . . . .
APPENDIX II. FAN PERFORMANCE
97
. . . . . . . . . . . .
APPENDIX III. WIRING DIAGRAMS
111
. . . . . . . . . . .
APPENDIX IV. MOTORMASTER SENSOR
LOCATIONS
149
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNIT START-UP CHECKLIST
151
. . . . . . . . . . . . . . . . .
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 can 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 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
Summary of Contents for 48TC 04 Series
Page 27: ...27 COOLING CHARGING CHARTS cont C14064 Fig 33 Cooling Charging Charts 12 5 Ton 48TC...
Page 29: ...29 COOLING CHARGING CHARTS cont C13218 Fig 35 Charging Chart 48TC Size D16 48TC...
Page 40: ...40 C14052 Fig 51 Typical Smoke Detector System Wiring 48TC...
Page 122: ...122 APPENDIX III WIRING DIAGRAMS C12413 Fig 103 48TC A04 A07 Power Diagram 208 230 1 60 48TC...
Page 124: ...124 APPENDIX III WIRING DIAGRAM LIST C12415 Fig 105 48TC A04 A07 Power Diagram 575 3 60 48TC...
Page 126: ...126 APPENDIX III WIRING DIAGRAM LIST C13246 Fig 107 48TC A08 A12 Power Diagram 575 3 60 48TC...
Page 128: ...128 APPENDIX III WIRING DIAGRAM LIST C13247 Fig 109 48TC D08 D12 Power Diagram 575 3 60 48TC...
Page 130: ...130 APPENDIX III WIRING DIAGRAM LIST C13249 Fig 111 48TC D14 Power Diagram 575 3 60 48TC...
Page 139: ...139 APPENDIX III WIRING DIAGRAMS C12423 Fig 120 48TC D16 Power Diagram 575 3 60 48TC...
Page 143: ...143 APPENDIX III WIRING DIAGRAM LIST C13485 Fig 124 48TC 16 PremierLink Control Diagram 48TC...
Page 145: ...145 APPENDIX III WIRING DIAGRAM LIST C13487 Fig 126 48TC 16 RTU Open Control Diagram 48TC...
Page 146: ...146 APPENDIX III WIRING DIAGRAM LIST C14124 Fig 127 48TC D08 14 E08 14 W7220 2 Speed IFM 48TC...