Installation Guide for Carrier 17EX Centrifugal Liquid Chiller

Quick Guide from the Manual

This guide provides essential installation instructions for the Carrier 17EX Centrifugal Liquid Chiller. Key procedures include proper rigging, establishing water and electrical services, and applying field insulation. Always refer to the full PDF for specific job-site wiring diagrams and certified drawings.

Safety Considerations

DANGER: Refrigerant vapor is harmful and can cause asphyxiation hazard. Do not vent refrigerant relief devices indoors. Ensure adequate ventilation per ASHRAE 15.

• Do not use oxygen to purge lines or leak test.
• Do not weld or flame cut refrigerant lines until all refrigerant is removed.
• Ensure all power is off and residual voltage is discharged before working on electrical components.
• Use mechanical equipment (crane, hoist) to lift heavy components.
• Do not step on refrigerant lines.

Receiving and Rigging

Upon receipt, inspect the chiller for shipping damage while still on the conveyance. Do not open valves or loosen connections until ready for installation. The chiller may be shipped with a nitrogen holding charge or isolated refrigerant charge.

Rigging the Chiller

• The 17EX can be rigged as an entire assembly or separated into components (compressor, economizer, motor, gear, cooler, condenser).
• Lift the chiller only from the 4 points indicated in the rigging guide (Fig. 3).
• Each lifting cable or chain must be capable of supporting the entire weight of the chiller.
• When rigging components separately, the open drive motor and gear must be removed to avoid overturning.

Installation

Chiller Supports

The chiller must be level within 1/16-in. Use support plates and shear flex pads for standard isolation. For uneven floors, use soleplates and leveling pads with non-shrinking grout.

Connecting Piping

• Water Piping: Install piping using job data and piping drawings. Ensure water flow direction is as specified in Fig. 9. Entering water is always the lower nozzle; leaving water is the upper nozzle.
• Oil Coolers: Connect water to the compressor and external gear oil coolers. Water supply may be city water or chilled water.
• Relief Venting: Vent relief devices outdoors in accordance with ASHRAE 15.

Electrical Connections

Field wiring must comply with job wiring diagrams and applicable electrical codes.

• Control Inputs: Connect chilled and condenser water flow switches to the starter terminal strip.
• Control Outputs: Connect auxiliary equipment, pumps, and alarms as required.
• Motor Terminals: Insulate compressor motor terminals and lead wire ends to prevent moisture condensation and arcing.
• CCN Interface: The Carrier Comfort Network (CCN) communication bus uses shielded, 3-conductor cable in a daisy chain arrangement.

Insulation

Insulate the following components at the job site: cooler shell, cooler tube sheets, suction piping, oil reclaim tube, cooler liquid supply piping, hot gas bypass, economizer/storage vessel shell, end plate, low-side float chamber, and compressor vent line to cooler. Protect insulation from weld heat damage during installation.

Start-up Checklist

Before requesting start-up, ensure the following:

• Chiller is level.
• All piping is installed and supported with correct flow direction.
• Relief valves are piped to the atmosphere.
• Electrical wiring is complete and checked.
• Chilled and condenser water lines are filled, tested, flushed, and vented.