CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Job Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

Receiving the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSPECT SHIPMENT

IDENTIFY MACHINE

INSTALLATION REQUIREMENTS

PROVIDE MACHINE PROTECTION

Rigging the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

RIG MACHINE ASSEMBLY

RIG MACHINE COMPONENTS

Separate Machine Components . . . . . . . . . . . . . . . . . 13

SEPARATE COOLER AND CONDENSER

REMOVE THE CONTROLS/DRIVE ENCLOSURE FROM THE CONDENSER

REMOVE THE DISCHARGE PIPE ASSEMBLY FROM THE CONDENSER

SEPARATE THE COMPRESSOR FROM THE CONDENSER

SEPARATE THE VAPORIZER FROM THE

CONDENSER

VFD Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Install Machine Supports . . . . . . . . . . . . . . . . . . . . . . . . 22

INSTALL STANDARD ISOLATION

INSTALL ACCESSORY ISOLATION

INSTALL SPRING ISOLATION

Connect Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

INSTALL WATER PIPING TO HEAT EXCHANGERS

INSTALL VENT PIPING TO RELIEF VALVES

Make Electrical Connections . . . . . . . . . . . . . . . . . . . . 30

GROUNDING THE CONTROLS/DRIVE ENCLOSURE

INSTALLING INPUT POWER WIRING

WIRING THE FIELD WIRING TERMINAL STRIPS

CONNECT CONTROL INPUTS

CONNECT CONTROL OUTPUTS

CONNECT STARTER

COMPLETING THE INSTALLATION . . . . . . . . . . . 43-47

Checking the Installation . . . . . . . . . . . . . . . . . . . . . . . . 43

Oil Pump and Oil Heater . . . . . . . . . . . . . . . . . . . . . . . . . 43

Connect Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 43

Carrier Comfort Network Interface. . . . . . . . . . . . . . . 43

Lead-Lag Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . 44

Install Field Insulation and Lagging . . . . . . . . . . . . . 44

INSTALLATION START-UP REQUEST

CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1, CL-2

INTRODUCTION

General — The 23XRV machine is factory assembled, wired, and leak tested. Installation (not by Carrier) consists primarily of establishing water and electrical services to the machine. The rigging, installation, field wiring, field piping, and insulation of waterbox covers are the responsibility of the contractor and/or customer. Carrier has no installation respon- sibilities for the equipment.

Job Data — Necessary information consists of:

job contract or specifications

machine location prints

rigging information

piping prints and details

field wiring drawings

starter manufacturer’s installation details

Carrier certified print

INSTALLATION

Receiving the Machine

INSPECT SHIPMENT

Do not open any valves or loosen any connections. The 23XRV machine may be shipped with a full refrigerant charge. Some machines may be shipped with a nitrogen holding charge as an option.

1.Inspect for shipping damage while machine is still on ship- ping conveyance. If machine appears to be damaged or has been torn loose from its anchorage, have it examined by transportation inspectors before removal. Forward claim papers directly to transportation company. Manufac- turer is not responsible for any damage incurred in transit.

2.Check all items against shipping list. Immediately notify the nearest Carrier representative if any item is missing.

3.To prevent loss or damage, leave all parts in original pack- ages until beginning installation. All openings are closed with covers or plugs to prevent dirt and debris from enter- ing machine components during shipping. A full operating oil charge is placed in the oil sump before shipment.

IDENTIFY MACHINE (Fig. 1-4) — Refer to machine name- plate in Fig. 1. The machine model number, serial number, and heat exchanger sizes are stamped on the Refrigeration Machine nameplate located on the side of the VFD (variable frequency drive) enclosure. Check this information against shipping papers and job data.

a23-1547

Fig. 1 — Refrigeration Machine Nameplate

2

Page 2
Image 2
Carrier HFC-134A installation instructions Contents

HFC-134A specifications

Carrier HFC-134A, also known as tetrafluoroethane, is a hydrofluorocarbon (HFC) refrigerant widely used in a variety of cooling and heating applications. It is recognized for its role in refrigeration and air conditioning systems, making it a crucial component in many modern HVAC units. One of the key features of HFC-134A is its zero ozone depletion potential, which makes it an environmentally friendly alternative to older refrigerants like CFCs and HCFCs.

The characteristics of HFC-134A include its stability, non-corrosiveness, and effectiveness at low temperatures. These properties allow it to perform efficiently in both residential and commercial refrigeration systems. The refrigerant operates within a temperature range that is ideal for many applications, including food preservation and air conditioning. HFC-134A's thermodynamic properties enable it to absorb and release heat effectively, making it suitable for both vapor-compression and absorption refrigeration cycles.

From a technological perspective, the use of HFC-134A aligned with the transition to more sustainable refrigerants. As global environmental regulations have tightened, manufacturers have shifted towards refrigerants with lower global warming potential (GWP). HFC-134A has a GWP of approximately 1,430, which is lower than many of its predecessors but still higher than some newer alternatives. This aspect drives ongoing research and development in the industry, aiming to create even more environmentally sound refrigerants.

Carrier HFC-134A is compatible with various lubricants and can be integrated into systems designed for other refrigerants with minimal modifications. This flexibility allows for a smoother transition within existing installations as businesses and homeowners upgrade their HVAC systems to comply with environmental regulations.

In summary, Carrier HFC-134A plays a significant role in modern refrigeration and air conditioning technology. Its main features, including zero ozone depletion potential, stability, and efficiency, contribute to its widespread use in various applications. As the industry continues to evolve, the focus on reducing the environmental impact of refrigerants will undoubtedly influence the future direction of HFC-134A usage and the development of new alternatives.