The Bard HVAC MC4002 is an advanced solid state dual unit lead/lag controller designed to intelligently manage and alternate the operation of two HVAC units. By automatically rotating which unit acts as the lead and which serves as the lag, the MC4002 promotes balanced runtime hours, reduces wear on any single unit, and extends the overall service life of your HVAC system.
Overview
Built on proven solid state technology, the MC4002 eliminates the mechanical wear associated with electromechanical switching devices. This controller is the no-alarm configuration, making it ideal for installations where simplified control logic is preferred without the added complexity of alarm output wiring.
Key Features
- Advanced solid state design for reliable, long-lasting performance
- Dual unit lead/lag control automatically alternates between two HVAC units
- Promotes equal runtime distribution to extend equipment life
- No-alarm configuration for simplified installation and wiring
- Compatible with Bard HVAC wall-mount and packaged unit systems
- Compact design for easy panel or enclosure mounting
Benefits
- Reduces maintenance costs by balancing wear across both units
- Improves system redundancy — lag unit is always ready to take over
- Solid state circuitry minimizes the risk of contact failure
- Straightforward no-alarm wiring simplifies commissioning
Application
The MC4002 is well-suited for commercial and light industrial environments where two HVAC units serve a common zone or building. Typical applications include server rooms, telecom shelters, modular buildings, and any facility requiring continuous climate control with built-in redundancy.
Product Details
- Brand: Bard HVAC
- Model / SKU: MC4002
- Controller Type: Advanced Solid State Lead/Lag
- Configuration: Dual Unit, No Alarms
