Ventilation System Packages

Bard Wall-Mounts are designed to provide optional ventilation packages to meet all of your ventilation and indoor air quality requirements. Standard on all units is the barometric fresh air damper. All packages can be ordered built-in at the factory or can be easily field-installed at the time of installation of the Wall-Mount, or can be retrofitted at a later date.

BAROMETRIC FRESH AIR DAMPER - BFAD

STANDARD

The barometric fresh air damper is a standard feature on all models. It is installed on the inside of the service door and allows outside ventilation air, up to 25% of the total airflow rating of the unit, to be introduced through the air inlet openings and to be mixed with the conditioned air. The damper opens during blower operation and closes when the blower is off. Adjustable blade stops allow different amounts of outside air to be introduced into the building and can be easily locked closed if required.

BAROMETRIC FRESH AIR DAMPER BLANK OFF PLATE - BOPOPTIONAL

A blank off plate is installed on the inside of the service door. It covers the air inlet openings, which restricts any outside air from entering the unit. The blank off plate should be utilized in applications where outside air is not required to be mixed with the conditioned air.

MOTORIZED FRESH AIR DAMPER

COMMERCIALROOMVENTILATOR

ECONOMIZER

MOTORIZED FRESH AIR DAMPER - MFAD

OPTIONAL

The motorized fresh air damper is internally mounted behind the service door and allows outside ventilation air, up to 25% of the total airflow rating of the unit, to be introduced through the air inlet openings and to be mixed with the conditioned air. The two position damper can be fully open or closed. The damper blade is powered open by a 24VAC motor with spring return on power loss. The damper can be controlled by indoor blower operation or can be field connected to be managed based on building occupancy.

NOTE: The above vent systems are intake only without built-in exhaust capability. Building will likely require separate field installed barometric relief or mechanical exhaust elsewhere within the conditioned space. Balancing dampers in the return air grille may be required to achieve specified amount of outdoor air intake.

COMMERCIAL ROOM VENTILATOR - CRV

OPTIONAL

The built-in commercial room ventilator is internally mounted behind the service door and allows outside ventilation air, up to 50% of the total airflow rating of the unit, to be introduced through the air inlet openings. It includes a built-in exhaust air damper.

The commercial room ventilator (CRV) is a simple and innovative approach to improving the indoor air quality by providing fresh air intake and exhaust capability through the CRV. The damper can be easily adjusted to control the amount of fresh air supplied into the building. The CRV can be controlled by indoor blower operation or field controlled based on room occupancy. The CRV is power open - spring return on power loss. Complies with ASHRAE Standard 62.1 “Ventilation for Acceptable Indoor Air Quality.”

ECONOMIZER - EIFM

OPTIONAL

The built-in economizer system is internally mounted behind the service door and allows outdoor air to be introduced through the air inlet openings. The amount of outdoor air varies in response to the system controls and settings defined by the end user. It includes a built-in exhaust air damper. The economizer is designed to provide “free cooling” when outside air conditions are cool and dry enough to satisfy cooling requirements without running the compressor. This in turn provides lower operating costs, while extending the life of the compressor.

Standard Features:

￿One Piece Construction - Easy to install with no mechanical linkage adjustment required.

￿Exhaust Air Damper - Built in with positive closed position. Provides exhaust air capability to prevent pressurization of tight buildings.

￿Actuator Motor - 24 volt, power open, spring return with built in torque limiting switch.

￿Proportioning Type Control - for maximum “free cooling” economy and comfort.

￿Moisture Eliminator & Prefilter - permanent, washable aluminum construction.

￿Enthalpy Control - adjustable to monitor outdoor temperature and humidity.

￿Minimum Position Potentiometer - adjustable to control minimum damper blade position for ventilation purposes.

￿Mixed Air Sensor - to monitor outside and return air to automatically modulate damper position.

Form No.

S3408-1011

Supersedes

S3408-710

Page

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Bard W24A to W70A, W24L to W70L manual Ventilation System Packages, Standard Features
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W24A to W70A, W24L to W70L specifications

The Bard W24A to W70A and W24L to W70L series represents a notable advancement in the realm of heating and cooling technology. Engineered for efficiency and performance, these HVAC units are ideal for residential and commercial applications, delivering exceptional comfort across a variety of environments.

One of the primary features of the Bard W-series is its compact design, which allows for flexible installation in tight spaces. This is particularly advantageous for buildings with limited physical footprint or those requiring rooftop units. The modular design not only supports space efficiency but also facilitates easier maintenance and service access.

The W24A to W70A models emphasize energy efficiency with their advanced cooling and heating capabilities. They utilize a high-efficiency scroll compressor paired with state-of-the-art microchannel coil technology. This combination enhances thermal performance, reduces energy consumption, and lowers operational costs for users. The units are designed to meet or exceed industry standards for efficiency, making them a sustainable choice for energy-conscious consumers.

Balancing performance with quiet operation, these units incorporate sound attenuating features that minimize noise during operation. This aspect is particularly critical for residential settings or office environments where noise levels need to be kept low for occupant comfort.

From a technological standpoint, the Bard W-series includes integrated controls that allow for user-friendly operation. The systems feature digital thermostats with programmable settings, ensuring optimal comfort while minimizing energy usage. Additionally, some models offer connectivity options for smartphone control, enabling users to manage their HVAC systems remotely.

The W24L to W70L series focuses primarily on heating applications, utilizing highly efficient electric heating elements. These models are designed to provide consistent and reliable warmth during colder months, emphasizing rapid temperature recovery. The use of environmentally friendly refrigerants further enhances their appeal, reflecting a commitment to sustainability.

Durability is another hallmark of the Bard W-series. Constructed with high-quality materials and coatings, these units are built to withstand the rigors of various environmental conditions, ensuring longevity and reliability over time.

Overall, the Bard W24A to W70A and W24L to W70L series embodies a seamless integration of efficiency, technology, and durability, making them a smart choice for diverse heating and cooling needs.
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