Bard MC4002-B User Manual

Page 1 of 61
MC4002 Series Solid State
Dual Unit Lead/Lag Controller
INSTALLATION INSTRUCTIONS
&
REPLACEMENT PARTS LIST
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual : 2100-614K
Supersedes: 2100-614J
Date: 4-1-21

Bard MC4002-B Specifications

General

Brand	Bard
Model	MC4002-B
Category	Controller
Language	English

Summary

Theory of Operation

Specifications and Features for Basic Controller

Basic MC4002 Controller Input/Output Specifications

Specifications and Features for Alarm Boards

MC4002-A Optional Base Alarm Board

Details inputs and outputs for the base alarm board.

MC4002-B Enhanced Version Alarm Board

Details additional outputs for the enhanced alarm board.

General Programming Overview

MC4002 Controller Buttons and Function

Controller Programmable Features and Default Settings

Humidity Reduction Options

Synchronized Dehumidification Option

Cooling Sequences for Alternating Lead/Lag Configuration

1-Stage Compressor Units No Economizer

Describes cooling operation for 1-stage units without economizers.

1-Stage Compressor Units with EIFM Economizers

1-Stage Compressor Units with ECONWM or WECOP Economizers

2-Stage Compressor Units with EIFM Economizers

2-Stage Compressor Units with ECONWM or WECOP Economizers

Cooling Sequences for Non-Alternating Lead/Lead/Lag/Lag Configuration

2-Stage Compressor Units No Economizer

Describes cooling sequences for non-alternating 2-stage units.

1-Stage Compressor Units with EIFM Economizers

Describes cooling sequences for non-alternating 1-stage units.

Heating Sequence of Operation

Air Conditioners with Electric Heat

Heating operation for AC units with electric heat.

Heat Pumps with Electric Heat

Heating operation for heat pumps with electric heat.

Specifications for Optional Remote Communication Board

CB5000 Series Communication Board

Accessing the System

Setpoints Page

Notification Setup Page

Email Notifications

Controller Wiring

Security (Locking) Feature

Prevents unauthorized changes to controller settings by locking it.

Generator Run Feature

Backup DC Power Connection

Connection for -24VDC or -48VDC to maintain operation during power outages.

Single Unit Application for MC4002 with Alarm Board

Controller Connections Diagram 29

Alarm Wiring

Emergency Ventilation Sequence

Alarm Board Connections for Normally Closed (NC) Open-On-Alarm Strategy

Alarm Board Connections for Normally Open (NO) Close-On-Alarm Strategy

Programming Instructions

MC Series Overview

Operating Instructions

Program Menu