42C,D,S,V Series Fan Coil Air Conditioners

Installation, Start-Up and Service

Instructions

CONTENTS

Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

PRE-INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39 Unpack and Inspect Units . . . . . . . . . . . . . . . . . . . . . . . . 3 Protect Units From Damage . . . . . . . . . . . . . . . . . . . . . . 3 Prepare Jobsite for Unit Installation . . . . . . . . . . . . . . 3 Identify and Prepare Units. . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-67 Step 1 — Place Units in Position . . . . . . . . . . . . . . . . 40

42C UNITS

42V UNITS

42D UNITS

42S UNITS

Step 2 — Make Piping Connections . . . . . . . . . . . . . 42

VALVE PACKAGES

42C,D,V DRAIN CONNECTIONS

42C,D,V WATER SUPPLY/RETURN CONNECTIONS

42C,D,V STEAM CONNECTIONS

42C,D,V DIRECT EXPANSION (DX) REFRIGERANT PIPING

TEST AND INSULATE

Step 3 — Make Electrical Connections . . . . . . . . . . 55

• STANDARD WIRING PACKAGES

Step 4 — Make Duct Connections . . . . . . . . . . . . . . . 66 Step 5 — Frame and Finish Unit. . . . . . . . . . . . . . . . . 66

Step 6 — Cut out Openings for Grilles and Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Step 7 — Make Final Preparations. . . . . . . . . . . . . . . 67 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67,68 Excessive Condensation on Unit. . . . . . . . . . . . . . . . 67 To Clean Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Coil Air Vent (Manual or Automatic) . . . . . . . . . . . . . 67 Check Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Fan Motor Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Clean Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Clean Electric Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Clean or Replace Air Filters . . . . . . . . . . . . . . . . . . . . . 68 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

START-UP CHECKLIST FOR 42C,D,S,V SERIES FAN COIL AIR CONDITIONERS. . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installation of this unit can be hazardous due to electrical com- ponents and equipment location (such as a ceiling or elevated structure). Only trained, qualified installers and service mechanics should install and service this equipment.

When installing this unit, observe precautions in the literature, labels attached to the equipment, and any other safety precau- tions that apply.

Follow all safety codes.

Wear safety glasses and work gloves.

Use care in handling and installing this accessory.

WARNING

ELECTRIC SHOCK HAZARD To avoid the possibility of electrical shock, open and tag all service switches before installing this equipment.

INTRODUCTION

This document contains general installation instructions for the 42C,D,S,V unit fan coils. Refer to the unit-wiring diagram installed on the blower housing or specific manufacturer litera- ture for any other type of factory-mounted controls.

See drawings for unit configurations, dimensions, clearances, and pipe connections. Refer to unit wiring label for all electrical connections; follow NEC (National Electrical Code) and local codes.

PHYSICAL DATA

Component weight data, shipping weights, and filter data of the 42C,D,S,V units are provided in Tables 1-4.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53420004-01

Printed in U.S.A.

Form 42-3SI

Pg 1

12-09

Replaces: 42-2SI

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Carrier 42S, 42C, 42D, 42V specifications Installation, Start-Up and Service Instructions

42V, 42D, 42S, 42C specifications

Carrier has established itself as a leader in the HVAC industry by continuously innovating and refining their products. Among their offerings, the Carrier 42D, 42C, 42S, and 42V series stand out for their advanced features, efficient technologies, and user-friendly characteristics.

The Carrier 42D series is known for its robust and energy-efficient design, making it ideal for commercial applications. This series employs a high-performance scroll compressor that enhances efficiency while minimizing noise levels. Equipped with advanced controls, the 42D allows for precise temperature management, ensuring comfort in a variety of environments. Its compact design is another notable feature, allowing for easier installation in constrained spaces while still delivering excellent performance.

Similar to the 42D, the 42C series emphasizes energy efficiency, but it comes with additional features tailored for residential applications. One of the main highlights is its variable-speed compressor technology, which provides exceptional temperature control and reduces energy consumption. This series also includes enhanced filtration systems, ensuring cleaner air quality, which is particularly important for allergy sufferers. Moreover, the 42C's intelligent control systems simplify operation and allow users to customize settings according to their preferences.

The Carrier 42S series focuses on environmentally friendly refrigerants, aligning with global sustainability trends. This series utilizes R-410A refrigerant, which has a lower impact on the ozone layer compared to traditional refrigerants. In addition to its eco-friendly attributes, the 42S boasts features such as an integrated humidity control system, which modulates humidity levels effectively, improving overall indoor air quality.

Finally, the 42V series presents a versatile solution for customers looking for advanced technology and adaptability. With smart connectivity features, the 42V allows for remote monitoring and control via mobile apps, enhancing user convenience. This series is also equipped with a state-of-the-art inverter compressor, which adjusts its speed according to the heating or cooling demand, resulting in significant energy savings.

In summary, the Carrier 42D, 42C, 42S, and 42V series each offer unique features and technological advancements that cater to the diverse needs of users in both residential and commercial settings. With a focus on energy efficiency, user-friendly controls, and environmentally sustainable practices, Carrier continues to set the standard in HVAC solutions.