Carrier EVD4X - User Manual

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Installation Instructions

NOTE: Read the entire instruction manual before starting the installation.

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Cabinet Sweating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Inspect Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Select Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation of Evaporator Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Refrigerant Line Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connect Refrigerant, Liquid, and Suction Lines . . . . . . . . . . . . . . 5

Waste Line Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Humidifier Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Safety Considerations

Improper installation, adjustment, alteration, service, maintenance, or

use can cause explosion, fire, electrical shock, or other conditions which

may cause death, personal injury or property damage. Consult a

qualified installer, service agency, or your distributor or branch for

information or assistance. The qualified installer or agency must use

factory-authorized kits or accessories when modifying this product.

Refer to the individual instructions packaged with the kits or accessories

when installing.

Follow all safety codes. Wear safety glasses, protective clothing, and

work gloves. Use quenching cloth for brazing operations. Have fire

extinguisher available. Read these instructions thoroughly and follow all

warning or cautions included in literature and attached to the unit.

Consult local building codes and the current editions of the National

Electrical Code (NEC) NFPA 70.

In Canada, refer to the current editions of the Canadian Electrical Code

CSA C22.1.

Recognize safety information. When you see this symbol on the unit

and in instructions or manuals, be alert to the potential for personal

injury. Understand the signal words DANGER, WARNING, CAUTION,

and NOTE. These words are used with the safety-alert symbol.

DANGER identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies hazards which could

result in personal injury or death. CAUTION is used to identify unsafe

practices which may result in minor personal injury or product and

property damage. NOTE is used to highlight suggestions which will

result in enhanced installation, reliability, or operation.

EVD4X, ESD4X, WMVC, WMSC

Cased Cooling Only Evaporator Coil

Upflow / Downflow

WARNING

PROPERTY DAMAGE HAZARD — FURNACE/COIL

MATCHING

Failure to follow this warning could result in property damage, personal

injury, or death.

This coil must be matched to heating equipment that meets all

CSA/ANSI Z21.47 or cooling equipment that meets UL 1995 or UL

60335-2-40. Refer to the furnace/blower installation instructions for

any potential considerations when installing coils with composite drain

pans.

CAUTION

PARTIAL UNIT REQUIREMENTS

Failure to follow this warning could result in equipment damage.

This family of evaporator coils are PARTIAL UNIT AIR

CONDITIONER, complying with PARTIAL UNIT requirements of

UL/CSA 60335-2-40 Standard, and must only be connected to other

units that have been confirmed as complying to corresponding

PARTIAL UNIT requirements of this UL/CSA 60335-2-40 Standard.

WARNING

PERSONAL INJURY / PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in property damage, personal

injury, or death.

For continued performance, reliability, and safety, the only approved

accessories and replacement parts are those specified by the equipment

manufacturer. The use of non-manufacturer approved parts and

accessories could invalidate the equipment limited warranty and result

in fire risk, equipment malfunction, and failure. Please review

manufacturer’s instructions and replacement part catalogs available

from your equipment supplier.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing, modifying or servicing system, always turn off main

power to system. There may be more than one disconnect switch. Lock

out and tag switch with a suitable warning label.

CAUTION

UNIT DAMAGE HAZARD

The coil is not approved for Heat Pump application. Unit damage may

occur

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Summary

Safety Considerations

Electrical and Explosion Hazards

Warnings about electrical shock and explosion risks during installation and operation.

Personal Injury and Unit Damage Hazards

Precautions against personal injury from pressure, cuts, and unit damage from improper installation.

Property Damage and Environmental Hazards

Warnings concerning property damage from incorrect matching, corrosion, and environmental impact of refrigerants.

Coil Compatibility and Application Warnings

Cautions regarding coil matching to equipment and its unsuitability for heat pumps.

Installation

Airflow

Importance of airflow for system performance, listing potential problems.

TXV (Thermal Expansion Valve)

Guidance on handling the TXV during installation to optimize performance and comfort.

Cabinet Sweating

Advice on insulating cabinets in unconditioned spaces to prevent sweating.

Inspect Equipment

Instructions to check for shipping damage and file claims if necessary.

Evaporator Coil Installation Procedures

Upflow Coil Installation

Steps for installing the cased coil in an upflow furnace configuration.

Downflow Coil Installation

Instructions for installing the coil in a downflow furnace configuration.

Refrigerant Line Connections

Connect Refrigerant, Liquid, and Suction Lines

Detailed steps for making refrigerant line connections and leak checks.

Condensate Drain Line Connection

Waste Line Connection

Humidifier Application

Considerations for installing a humidifier in conjunction with the V-coil.

Summary

Safety Considerations

Electrical and Explosion Hazards

Warnings about electrical shock and explosion risks during installation and operation.

Personal Injury and Unit Damage Hazards

Precautions against personal injury from pressure, cuts, and unit damage from improper installation.

Property Damage and Environmental Hazards

Warnings concerning property damage from incorrect matching, corrosion, and environmental impact of refrigerants.

Coil Compatibility and Application Warnings

Cautions regarding coil matching to equipment and its unsuitability for heat pumps.

Installation

Airflow

Importance of airflow for system performance, listing potential problems.

TXV (Thermal Expansion Valve)

Guidance on handling the TXV during installation to optimize performance and comfort.

Cabinet Sweating

Advice on insulating cabinets in unconditioned spaces to prevent sweating.

Inspect Equipment

Instructions to check for shipping damage and file claims if necessary.

Evaporator Coil Installation Procedures

Upflow Coil Installation

Steps for installing the cased coil in an upflow furnace configuration.

Downflow Coil Installation

Instructions for installing the coil in a downflow furnace configuration.

Refrigerant Line Connections

Connect Refrigerant, Liquid, and Suction Lines

Detailed steps for making refrigerant line connections and leak checks.

Condensate Drain Line Connection

Waste Line Connection

Humidifier Application

Considerations for installing a humidifier in conjunction with the V-coil.

This document provides installation instructions for the EVD4X, ESD4X, WMVC, and WMSC series of cased cooling-only evaporator coils, designed for upflow and downflow applications.

Function Description:

These units are evaporator coils designed for use with furnaces in cooling-only applications. They are not suitable for heat pump applications or horizontal installations. The coils are enclosed in a painted casing and feature factory-installed Thermostatic Expansion Valves (TXVs). They are specifically designed for use with Puron (R-410A) refrigerant systems. The primary function is to facilitate heat exchange, removing heat and humidity from the indoor air as part of a complete air conditioning system.

Important Technical Specifications:

Refrigerant: R-410A (Puron).
Precharge: Coils are factory charged with 7-10 PSIG nitrogen.
TXV: Factory-installed hard-shutoff TXV, preset at approximately 10° superheat (measured at the suction service valve) and not field adjustable.
Compliance: These evaporator coils are PARTIAL UNIT AIR CONDITIONERs, complying with PARTIAL UNIT requirements of UL/CSA 60335-2-40 Standard. They must only be connected to other units confirmed to comply with corresponding PARTIAL UNIT requirements of this standard.
Matching: Must be matched to heating equipment meeting CSA/ANSI Z21.47 or cooling equipment meeting UL 1995 or UL 60335-2-40.
Drain Connections: Four 3/4-inch female threaded pipe connections are provided for condensate drainage. Unused connections must be fitted with 3/4-inch male PVC plugs.
Airflow: Generally, 350 to 450 cfm/ton during normal cooling operation is recommended.
Buried Refrigerant Tubing: Do not bury more than 36 inches of refrigerant tubing in the ground. If any section is buried, there must be a 6-inch vertical rise to the valve connections on the outdoor unit.

Usage Features:

Installation Configurations: Can be installed in upflow or downflow configurations.
Furnace Compatibility: Designed to fit furnaces of the same width. For wider coils on narrower furnaces, a transition adapter is recommended.
Condensate Management: The coil is designed with built-in condensate drain fittings. Proper condensate drainage requires the coil to be level and the furnace coil door to be properly installed to align the condensate pan with the coil. A trap in the condensate line is highly recommended and may be a code requirement in some areas.
Unconditioned Space Installation: If installed in a garage, attic, or other unconditioned space, a 6-inch wide piece of insulation should be wrapped around the coil casing and supply duct connection point to prevent cabinet sweating.
Humidifier Application: When installing a humidifier with a V-coil system, the humidifier should be mounted to the supply plenum or return duct whenever possible to ensure adequate airflow.
Safety Features: Includes warnings for property damage, personal injury, electrical shock, and environmental hazards. Emphasizes the importance of following safety codes, wearing protective gear, and using factory-authorized kits and accessories.

Maintenance Features:

Periodic Maintenance: Essential for high performance and minimizing equipment failure. Recommended annually by a qualified installer or service agency.
Filter Replacement/Cleaning: The only consumer service recommended or required is monthly filter replacement or cleaning.
Refrigerant Recovery: Federal regulations require refrigerant recovery during system repair or final unit disposal to prevent environmental damage.
Leak Checks: Connections should be leak-checked after brazing and before insulating the entire suction line.
Trap Priming: Condensate traps should be primed and tested for leaks. Insulate traps and lines if located above a living area.
Secondary Condensate Pan: If the unit is located in or above a living space where condensate overflow could cause damage, a field-supplied external condensate pan with a secondary drain line (or a separate 3/4-inch condensate line) to a noticeable location is required. A float switch to shut off the unit if water accumulates in the secondary pan is also recommended for further protection.