SHIPPING DAMAGE

Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

GENERAL

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians.

The refrigerant system is completely assembled and charged. All internal wiring is complete.

The unit is designed for use with or without duct work. Flanges are provided for attaching the supply and return ducts.

These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit.

These instructions and any instructions packaged with any separate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation. Note particularly “Starting Procedure” and any tags and/or labels attached to the equipment.

While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made. See Page 1 for information on codes and standards.

Size of unit for a proposed installation should be based on heat loss calculation made according to methods of Air Conditioning Contractors of America (ACCA). The air duct should be installed in accordance with the Standards of the National Fire Protection Association for the Installation of Air Conditioning and Ventilating Systems of Other Than Residence Type, NFPA No. 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA No. 90B. Where local regulations are at a variance with instructions, installer should adhere to local codes.

DUCT WORK

All duct work, supply and return, must be properly sized for the design air flow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage.

Refer to Table 10 for maximum static pressure available for duct design.

Design the duct work according to methods given by the Air Conditioning Contractors of America (ACCA). When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation. Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum.

A 1/4 inch clearance to combustible material for the first three feet of duct attached to the outlet air frame is required. See Wall Mounting Instructions and Figures 3 and 4 for further details.

Ducts through the walls must be insulated and all joints taped or sealed to prevent air or moisture entering the wall cavity.

Some installations may not require any return air duct. A metallic return air grille is required with installations not requiring a return air duct. The spacing between louvers on the grille shall not be larger than 5/8 inch.

Any grille that meets with 5/8 inch louver criteria may be used. It is recommended that Bard Return Air Grille Kit RG2 through RG5 or RFG2 through RFG5 be installed when no return duct is used. Contact distributor or factory for ordering information. If using a return air filter grille, filters must be of sufficient size to allow a maximum velocity of 400 fpm.

NOTE: If no return air duct is used, applicable installation codes may limit this cabinet to installation only in a single story structure.

Manual 2100-218 Page 5

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Bard WA482, WA421 installation instructions Shipping Damage, General, Duct Work

WA482, WA421 specifications

Bard WA482 and WA421 are high-performance air conditioning units designed for commercial and industrial applications. These models are renowned for their exceptional cooling efficiency, durability, and versatile performance, making them suitable for a variety of settings, including schools, factories, and office buildings.

One prominent feature of the Bard WA482 is its powerful cooling capacity. It has an impressive cooling output that can effectively manage indoor temperatures, even in the hottest conditions. This capability ensures optimal comfort for occupants while maintaining energy efficiency. Similarly, the Bard WA421 offers substantial cooling capacity, catering to smaller commercial spaces without compromising on performance.

Both models utilize advanced technology to enhance their operational efficiency. The units are equipped with a high-efficiency scroll compressor that minimizes energy consumption while delivering consistent cooling. This technology allows businesses to reduce their energy costs significantly, contributing to environmental sustainability.

Another significant characteristic of Bard WA482 and WA421 is their robust construction. Built with heavy-gauge galvanized steel, these units are designed to withstand tough environmental conditions. This durability ensures a long operational life, reducing the need for frequent repairs and replacements. The units are also corrosion-resistant, making them ideal for coastal or humid regions.

Efficiency is further enhanced by the inclusion of a multi-speed fan that allows for better airflow management. This feature enables the units to adjust their functioning based on the current cooling demand, optimizing energy use and minimizing noise levels. Consequently, users experience a comfortable environment without disruptive sound.

Maintenance is made simple with these models thanks to their accessible design. The units feature removable panels that provide easy access to internal components for routine servicing. This design minimizes downtime and helps maintain the overall efficiency of the system.

In terms of versatility, Bard WA482 and WA421 can be customized with various kits and options, including digital thermostats and advanced control systems. This adaptability enables users to tailor the cooling solutions to their specific needs, enhancing overall satisfaction.

In summary, Bard WA482 and WA421 stand out in the commercial air conditioning sector due to their impressive cooling capacity, energy-efficient technologies, robust construction, and ease of maintenance. These characteristics make them a reliable choice for businesses looking to maintain a comfortable and sustainable indoor environment.