Carrier 50TC - Manual (Page 2)

2
Outdoor Air Quality Sensor 36 . . . . . . . . . . . . . . . . .
Space Relative Humidity Senor or Humidistat 36 . .
Smoke Detector/Fire Shutdown (FSD) 37 . . . . . . . . .
Connecting Discrete Inputs 37 . . . . . . . . . . . . . . . . . .
Communication Wiring -- Protocols 38 . . . . . . . . . . . .
General 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Access 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTU Open Troubleshooting 39 . . . . . . . . . . . . . . . . .
Outdoor Air Enthalpy Control 40 . . . . . . . . . . . . . . . . . .
Differential Enthalpy Control 40 . . . . . . . . . . . . . . . .
Return Air Enthalpy Sensor 40 . . . . . . . . . . . . . . . . .
Smoke Detectors 41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System 41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller 41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor Module 41 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Smoke Detector Locations 42 . . . . . . . . . . . . . . . . . . . .
Supply Air 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Air without Economizer 42 . . . . . . . . . . . . . .
Return Air with Economizer 42 . . . . . . . . . . . . . . . . .
Step 11 -- Adjust Factory--Installed Options 46 . . . . . . . .
Step 12 -- Install Accessories 47 . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal injury
or property damage. Consult a qualified installer, service
agency, or your distributor or branch for information or
assistance. The qualified installer or agency must use
factory--authorized kits or accessories when modifying this
product. Refer to the individual instructions packaged with
the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloths for brazing operations and
have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and appropriate
national electrical codes (in USA, ANSI/NFPA70, National
Electrical Code (NEC); in Canada, CSA C22.1) for special
requirements.
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.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
Before performing service or maintenance operations
on unit, always turn off main power switch to unit and
install lock(s) and lockout tag(s). Unit may have more
than one power switch.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
Puronr (R--410A) refrigerant systems operate at
higher pressures than standard R--22 systems. Do not
use R--22 service equipment or components on Puron
refrigerant equipment.
!
WARNING
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could cause personal
injury or death.
Relieve pressure and recover all refrigerant before
system repair or final unit disposal.
Wear safety glasses and gloves when handling
refrigerants. Keep torches and other ignition sources
away from refrigerants and oils.
!
WARNING
CUT 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.
CAUTION
!
50TC
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