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Introduction
1.0INTRODUCTION
1.1System Descriptions
Liebert Challenger ITR™ environmental control systems are available in three main system configu- rations:
•self contained system with a scroll compressor in the room unit
•self contained chilled water system
•split system with an evaporator section and a remote condensing unit
All three types are available in horizontal flow configurations. Each model requires
The following features are included as standard in all room units regardless of the type of system:
Each configuration can operate with either Advanced Microprocessor Controls (A), or Advanced Microprocessor Controls with Graphics (G). A brief description of each, including operational differ- ences, is listed below. Check model numbers to see what is supplied with your unit.
1.1.1Self Contained Systems Air-Cooled Models
Complete refrigeration system including hot gas bypass and crankcase heater with standard con- denser and fan speed control for 95°F (35°C) ambient at sea level.
Water-Cooled Models
Compete refrigeration system including hot gas bypass with
Glycol-Cooled Models
The
GLYCOOL Models
Complete refrigeration system including hot gas bypass with glycol condenser and
1.1.2Chilled Water Models
Chilled Water models include chilled water piping,
1.1.3Split Systems
Each
Prop Fan
Includes scroll compressor, condenser coil, prop fan, high pressure switch, and
Centrifugal Fan
Includes scroll compressor, condenser coil, centrifugal blower assembly, high pressure switch, head pressure control valve,
Water/Glycol Condensing Units
Each
Each
1