Bard MC4002-B User Manual

Manual 2100-614K
Page 2 of 61
CONTENTS
Getting Other Information and Publications ...............3
Shipping Damage
...................................................3
General
..................................................................3
Theory of Operation
................................................3
Controller Certications
...........................................4
Specications/Features for Basic Controller
...............4
Mounting the Controller
...........................................4
Temperature Sensors
...............................................4
Temperature Sensor Logic
.......................................5
Basic MC4002 Controller Input/Output Specications .. 5
MC4002 Controller Connections ...........................5
Specications/Features for Alarm Boards
..................6
MC4002-A with Optional Base Alarm ....................6
MC4002-B with Enhanced Version Alarm ...............6
Low Voltage Field Wiring
.........................................6
Controller Grounding
...............................................6
Controller Power-Up
................................................6
Fire Suppression Circuit
..........................................6
Staging Delay Periods
.............................................7
Blower Operation
....................................................7
Advance (Swap) Lead/Lag Unit Feature
.....................7
Accelerate Timer Feature
.........................................7
General Programming Overview
................................8
Humidity Reduction Options
....................................9
Synchronized Dehumidication Option ..................9
Hot Gas Reheat Dehumidication Option .............10
Cooling Operating Sequences for Alternating
Lead/Lag/Lead/Lag Conguration
............................11
Cooling Operating Sequences for Non-Alternating
Lead/Lead/Lag/Lag Conguration
............................13
Heating Sequence of Operation
..............................15
Specications for Optional Remote Communication
Board
..................................................................15
Controller Wiring
...................................................23
Security (Locking) Feature
.....................................23
Generator Run Feature
..........................................23
Backup DC Power Connection
................................23
Controller Connections Diagrams
............................24
Single Unit Application for MC4002 with
Alarm Board ......................................................53
Alarm Wiring
........................................................54
2nd Stage Cooling Alarm
.......................................54
Refrigerant Pressure Alarms
...................................54
Emergency Ventilation Sequence
............................54
Programming Instructions
......................................57
Parts List
.............................................................60
FIGURES
Figure 1 Mechanical Humidistat Connection for
"D" Dehumidication Models
....................9
Figure 2 Electronic Humidistat Connection for
"D" Dehumidication Models
..................10
Figure 3 Alarm Board Connections for Normally
Closed "NC" Open-On-Alarm Strategy ......55
Figure 4 Alarm Board Connections for Normally
Open "NO" Close-On-Alarm Strategy
........ 56
Figure 5 Parts List Description Diagram ............... 59
TABLES
Table 1 Controller Connections Diagrams Index .... 24
Table 2 Temperature Sensor Table ...................... 61

Bard MC4002-B Specifications

General

Brand	Bard
Model	MC4002-B
Category	Controller
Language	English