Economizer Systems - Carrier 48FC M20 Series Service And Maintenance Instructions

ECONOMIZER SYSTEMS

The unit may be equipped with a factory-installed or accessory
(field-installed) economizer system. Three types are available:
two with logic control systems (EconoMi$er
IV) and one without a control system (EconoMi$er2). See
Fig. 60-62 for component locations on each type.
Economizers use direct-drive damper actuators.
IMPORTANT: Any economizer that meets the economizer
requirements as laid out in California's Title 24 mandatory
section 120.2 (fault detection and diagnostics) and/or pre-
scriptive 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 war-
ranty referred to in section 140.4 only applies to factory
installed economizers. Please refer to your economizer on
your unit.
Outside Air
Temperature Sensor
Fig. 60 — EconoMi$er X Component Locations
X and EconoMi$er
®
EconoMi$er X
Harness
Outside Air
Temperature Sensor
Low Ambient
Sensor
Fig. 61 — EconoMi$er IV Component Locations
Outside Air
Temperature Sensor
Fig. 62 — EconoMi$er2 Component Locations
47
EconoMi$er IV
Controller (W7212)
EconoMi$er2 Plug