Carrier 48TC series, Инструкции по обслуживанию и техническому обслуживанию, Страница: 2 / 112

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Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Ventilation (Continuous Fan) . . . . . . . . . . . . . . . . . . 71
START-UP, PREMIERLINK CONTROLS . . . . . . . . . 71
START-UP, RTU-OPEN CONTROLS . . . . . . . . . . . . 71
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . 71
APPENDIX A
— MODEL NUMBER
NOMENCLATURE. . . . . . . . . . . . . . . . . . . . . . . . . . 72
APPENDIX B — PHYSICAL DATA. . . . . . . . . . . . . . . 74
APPENDIX C — FAN PERFORMANCE . . . . . . . . . . . 85
APPENDIX D — WIRING DIAGRAMS . . . . . . . . . . . . 95
APPENDIX E — MOTORMASTER SENSOR
LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1
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 basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. 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, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to 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, CAUTION,
and NOTE. 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 hazards
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.
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing, safety glasses and gloves
when handling parts and servicing air conditioning equipment.
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.
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in death, serious
personal injury and/or property damage.
Never use non-certified refrigerants in this product. Non-certi -
fied refrigerants could contain contaminates that could lead to
unsafe operating conditions. Use ONLY refrigerants that con -
form to AHRI Standard 700.
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury,
death and/or equipment damage.
R-410A refrigerant systems operate at higher pressures than
standard R-22 systems. Do not use R-22 service equipment or
components on R-410A refrigerant equipment.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced unit perfor -
mance 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 air -
side pressure drop.
NOTICE: OPERATIONAL TEST ALERT
Failure to follow this ALERT could result in an unnecessary
evacuation of the facility.
Pressing the controller’s test/reset switch for longer than seven
seconds will put the duct detector into the alarm state and acti -
vate all automatic alarm responses.
CAUTION
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury or
death.
Before performing service or maintenance operations on the
fan system, shut off all unit power and lockout/tag-out the unit
disconnect switch. DO NOT reach into the fan section with
power still applied to unit.
WARNING
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 it. Lock-out and tag-out this switch, if
necessary.