ECONOMIZER – WA, WL & WH SERIES

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 with up to 100% outside air.

•Enthalpy control to monitor outdoor temperature and humidity – adjustable.

•Minimum position potentiometer – adjustable to control minimum damper blade position.

•Mixed air sensor to monitor outdoor and return air to automatically modulate damper position.

FIGURE 6

ECONOMIZER OPERATION

ECONOMIZER SEQUENCE OF OPERATION

CONDITION A – COOL OUTDOORS

First stage cooling closes and powers the economizer dampers to economizer mode and the indoor blower starts. Mixed Air Sensor senses a mixture of return air and outdoor air and modulates the dampers accordingly. Compressor operation is inhibited. (See Figure 6.)

If second stage closes on the thermostat, the dampers return to the closed or minimum position setting and the compressor starts for mechanical cooling.

MIS-347

Manual 2100-390 Page 8

Page 9 Page 11
Page 10
Image 10
Bard EIFM-2B, EIFM-3B installation instructions Economizer WA, WL & WH Series, Features
Page 9 Page 11

EIFM-3B, EIFM-2B specifications

The Bard EIFM-2B and EIFM-3B are two advanced heating and cooling systems designed for commercial and light industrial applications. Known for their energy efficiency and robust performance, these models are ideal for environments requiring reliable temperature control.

The EIFM-2B is a 2-ton unit, while the EIFM-3B is a 3-ton model, making them suitable for a variety of spaces. Both systems feature a compact design, allowing for easy installation even in restricted areas. The units utilize eco-friendly refrigerants, aligning with modern standards for environmental sustainability.

One of the standout technologies integrated into both units is Bard's innovative heat pump system. This technology allows for effective heating and cooling functionality, reducing the need for separate systems and lowering overall energy expenditure. With a SEER (Seasonal Energy Efficiency Ratio) rating that exceeds many competitors, these models ensure optimal energy consumption while maintaining comfort.

An important characteristic of the EIFM-2B and EIFM-3B is their advanced control system. The user-friendly interface provides precise temperature settings, programmable schedules, and remote access capabilities. This feature allows users to manage their climate control conveniently from anywhere, optimizing comfort and efficiency.

Durability is another hallmark of these models. Constructed with high-grade materials and components, the units are designed to withstand the rigors of commercial use. The robust casing protects internal components from moisture and debris, thereby extending the lifespan of the equipment. The units are also equipped with a reliable scroll compressor that enhances performance while minimizing noise levels, ensuring quiet operation.

Maintenance is simplified with both models, as they feature easy access panels and self-diagnostic capabilities. This design allows technicians to perform routine checks efficiently, reducing downtime and service costs.

In summary, the Bard EIFM-2B and EIFM-3B heating and cooling systems encapsulate innovation, efficiency, and durability. Their eco-friendly technology and advanced features make them a smart choice for businesses looking to enhance their climate control solutions while minimizing their environmental impact. Whether for a small commercial space or a larger industrial application, these units are engineered to deliver reliable performance and exceptional energy savings.
Top Page Image Contents