DUCT WORK

All duct work, supply and return, must be properly sized for the design airflow 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 Maximum ESP of operation Electric Heat Table 6.

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.

Models W18 & W24 as approved for zero inch clearance to the supply duct. For model series W30, W36, W42, W48, W60 and W70 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.

FILTERS

A 1-inch throwaway filter is standard with each unit. The filter slides into position making it easy to service. This filter can be serviced from the outside by removing the filter access panel. A 1-inch washable filter and 2- inch pleated filter are also available as optional accessories. The internal filter brackets are adjustable to accommodate the 2-inch filter by bending two (2) tabs down on each side of the filter support bracket.

FRESH AIR INTAKE

All units are built with fresh air inlet slots punched in the service door.

If the unit is equipped with a fresh air damper assembly, the assembly is shipped already attached to the unit. The damper blade is locked in the closed position. To allow the damper to operate, the maximum and minimum blade position stops must be installed. See Figure 1.

All capacity, efficiency and cost of operation information is based upon the fresh air blank-off plate in place and is recommended for maximum energy efficiency.

The blank-off plate is available upon request from the factory and is installed in place of the fresh air damper shipped with each unit.

CONDENSATE DRAIN

A plastic drain hose extends from the drain pan at the top of the unit down to the unit base. There are openings in the unit base for the drain hose to pass through. In the event the drain hose is connected to a drain system of some type, it must be an open or vented type system to assure proper drainage.

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

FIGURE 1

FRESH AIR DAMPER

Manual

2100-508A

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Bard W42L, 1 W48A1, W70L1, W70A1 Duct Work, Filters, Fresh AIR Intake, Condensate Drain, Fresh AIR Damper
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W70A1, W70L1, W42L, 1 W48A1 specifications

The Bard range of products, specifically the W24L1, W48L1, W42L1, W70A1, and W60A1 models, showcases advanced engineering aimed at providing efficient heating and cooling solutions. Each model comes with distinctive features and technologies tailored to meet various residential and commercial needs.

Starting with the W24L1 model, it is designed for compact spaces while delivering powerful performance. Its heating capacity is optimal for smaller areas, making it suitable for residential applications. The W24L1 incorporates advanced inverter technology, ensuring energy efficiency and reducing operational costs. This model is equipped with a user-friendly interface, enabling easy control and monitoring of settings.

Next is the W48L1, which offers increased capacity for larger spaces. This model is characterized by its robust build and enhanced airflow system that ensures uniform heating and cooling throughout the environment. The W48L1 utilizes environmentally friendly refrigerants, highlighting Bard’s commitment to sustainability. Its smart technology integration allows for seamless compatibility with smart home systems, providing added convenience for users.

The W42L1 model stands out for its versatility in both heating and cooling applications. It is engineered with high-efficiency components, which contribute to lower energy consumption. Features like programmable thermostats and variable speed fans enhance user comfort and adjust to varying demand. The W42L1 also comes with a durable construction, ensuring longevity and reliability even in challenging conditions.

For those demanding even higher performance, the W70A1 model caters to significant heating and cooling requirements. This unit is designed to tackle extreme weather conditions and is often favored for industrial applications. The W70A1 employs advanced heat exchanger technology, improving efficiency and reducing energy loss. Moreover, its rugged design enables operation in harsh environments without compromising performance.

Lastly, the W60A1 represents a harmonious blend of efficiency and power. It is particularly well-suited for mid-sized applications, combining the best features from the other models. The W60A1 integrates sophisticated microprocessor controls that optimize performance while ensuring compatibility with emerging smart technology platforms. Its energy-efficient design means lower operating costs while delivering impressive comfort levels.

In summary, Bard's W24L1, W48L1, W42L1, W70A1, and W60A1 models are engineered to deliver superior heating and cooling solutions across a variety of environments. With a focus on energy efficiency, advanced technologies, and user-friendly interfaces, these models exemplify Bard's commitment to innovation and sustainability in climate control systems.
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