Additional Rtu Open Installation And Troubleshooting; Economizer Systems - Carrier 50FC 04 Series Service And Maintenance Instructions

Additional RTU Open Installation and Trouble-
shooting
Additional installation, wiring and troubleshooting information
for the RTU Open Controller can be found in the following manu-
al: "48/50FC, 48/50GC Single Package Rooftop Units with RTU
Open Controls, Start-up, Operation and Troubleshooting
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
EconoMi$er IV) and one
(EconoMi$er 2).
See Fig. 56-58 for component locations on each type.
NOTE: For FC rooftop units EconoMi$er IV is available as a
factory-installed option for 04-06 units only.
Economizers use direct-drive damper actuators.
IMPORTANT: Any economizer that meets the economizer
requirements as laid out in California's Title 24 mandatory
section 120.2 (fault detection and diagnostics) and/or
prescriptive section 140.4 (life-cycle tests, damper leakage,
5 year warranty, sensor accuracy, etc), will have a label on the
economizer. Any economizer without this label does not meet
California's Title 24. The five year limited parts warranty
referred to in section 140.4 only applies to factory installed
economizers. Please refer to your economizer on your unit.
Outside Air
Temperature Sensor
Fig. 56 — EconoMi$er X Component Locations
systems (EconoMi$er ® X
without a control system
EconoMi$er X
Harness
Outside Air
Temperature Sensor
Low Ambient
Sensor
and
Fig. 57 — EconoMi$er IV Component Locations
Outside Air
Temperature Sensor
Fig. 58 — EconoMi$er 2 Component Locations
32
EconoMi$er IV
Controller (W7212)
EconoMi$er2 Plug