Bard MC4002-A Advanced Solid State Dual Unit Lead/Lag Controller with Alarm Board

The Bard MC4002-A is an advanced solid state dual unit lead/lag controller equipped with a base alarm board, designed for optimal control of two HVAC units simultaneously with built-in alarm notification capabilities. This controller features 2 stages of cooling control for each connected air conditioner and is designed for systems with or without economizers and for systems with 2-stage or dual compressors.

Key Features:

• Form C dry contact alarm relays with both NO and NC switching for complete alarm protocol flexibility
• Front panel indicators for all alarm actuations, active cooling/heating stages, and current lead unit, plus digital display for building temperature and programming functions
• Electronic non-mercury design with programmable functionality
• Electric reheat dehumidification circuit capability with optional humidity controller input, configurable for use with heat pumps
• Ethernet communication option available, with easy upgrade capability via snap-in alarm boards
• Operating range: 0 to 120°F, 18-32 VAC input, 50/60 Hz

The controller features a steel enclosure with hinged cover and (13) 7/8 inch diameter knockouts for flexible installation. Ideal for commercial and industrial applications requiring precise temperature and operational control, this controller enhances system responsiveness and reduces downtime.