Carrier 48TC**16 - Manual (Page 2)

2
Outdoor Air Quality Sensor 37 . . . . . . . . . . . . . . . . .
Space Relative Humidity Senor or Humidistat 37 . .
Smoke Detector/Fire Shutdown (FSD) 38 . . . . . . . . .
Connecting Discrete Inputs 38 . . . . . . . . . . . . . . . . . .
Communication Wiring -- Protocols 39 . . . . . . . . . . . .
General 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Access 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTU Open Troubleshooting 40 . . . . . . . . . . . . . . . . .
Outdoor Air Enthalpy Control 41 . . . . . . . . . . . . . . . . .
Differential Enthalpy Control 41 . . . . . . . . . . . . . . . .
Return Air Enthalpy Sensor 41 . . . . . . . . . . . . . . . . .
Smoke Detectors 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor Module 42 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Smoke Detector Locations 43 . . . . . . . . . . . . . . . . . . . .
Supply Air 43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Air without Economizer 43 . . . . . . . . . . . . . .
Return Air with Economizer 43 . . . . . . . . . . . . . . . . .
Step 13 -- Adjust Factory--Installed Options 46 . . . . . . . .
Step 14 -- Install Accessories 46 . . . . . . . . . . . . . . . . . . .
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.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect gas piping from unit when leak testing at
pressure greater than 0.5 psig (3450 Pa). Pressures
greater than 0.5 psig (3450 Pa) will cause gas valve
damage resulting in hazardous condition. If gas valve
is subjected to pressure greater than 0.5 psig (3450
Pa), it must be replaced before use. When pressure
testing field--supplied gas piping at pressures of 0.5
psig (3450 Pa) or less, a unit connected to such piping
must be isolated by closing the manual gas valve.
!
WARNING
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
!
48TC
**16