Carrier 48TC series, Service And Maintenance Instructions, Page: 46 / 112

46
ECONOMI$ER SYSTEMS
The 48TC units may be equipped with a factory-installed or acces -
sory (field-installed) EconoMi$er system. Three types are avail -
able: with a logic control system (EconoMi$er IV and
EconoMi$er X) and without a control system (EconoMi$er2). See
Fig. 59-61 for component locations on each type. The W7212
controller is used for EconoMi$er IV and the W7220 controller is
used for EconoMi$er X. See Fig. 62-65 for EconoMi$er section
wiring diagrams.
All three EconoMi$ers use direct-drive damper actuators.
Fig. 59 — EconoMi$er IV Component Locations
Fig. 60 — EconoMi$er X Component Locations
Fig. 61 — EconoMi$er 2 Component Locations
IMPORTANT: Any economizer that meets the economizer re -
quirements as laid out in California’s Title 24 mandatory sec -
tion 120.2 (fault detection and diagnostics) and/or prescriptive
section 140.4 (life-cycle tests, damper leakage, 5 year warranty,
sensor accuracy, etc), will have a label on the economizer. Any
economizer without this label does not meet California’s
Title 24. The five-year limited parts warranty referred to in sec -
tion 140.4 only applies to factory installed economizers. Please
refer to the economizer on the unit.
ECONOMI$ER IV
CONTROLLER
OUTSIDE AIR
TEMPERATURE SENSOR
LOW AMBIENT
SENSOR
ACTUATOR
WIRING
HARNESS
OUTSIDE AIR
TEMPERATURE SENSOR
WIRING HARNESS
ECONOMI$ER2
PLUG
BAROMETRIC
RELIEF
DAMPER
OUTDOOR
AIR HOOD
HOOD
SHIPPING
BRACKET
GEAR DRIVEN
DAMPER