Additional Rtu Open Installation And Troubleshooting; Economizer Systems - Carrier 48GC 04-06 Series Service And Maintenance Instructions

WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death and/or equipment damage.
Disconnect and lockout/tag-out electrical power before wiring
the RTU Open controller.
Additional RTU Open Installation and Trouble-
shooting
Additional installation, wiring and troubleshooting information
for the RTU Open Controller can be found in the following
manual: "48/50FC, 48/50GC Single Package Rooftop Units
with RTU Open Controls, Start-up, Operation and Trouble-
shooting 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$er
EconoMi$er IV) and one
(EconoMi$er 2). See Fig. 61-63 for component locations on
each type.
NOTE: For GC rooftop units EconoMi$er IV is only available
as a field-installed accessory.
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 5-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.
X and
®
without a control system
Outside Air
Temperature Sensor
Fig. 61 — EconoMi$er X Component Locations
Outside Air
Temperature Sensor
Low Ambient
Sensor
Fig. 62 — EconoMi$er IV Component Locations
Outside Air
Temperature Sensor
Fig. 63 — EconoMi$er 2 Component Locations
38
EconoMi$er X
Harness
EconoMi$er IV
Controller (W7212)
EconoMi$er2 Plug