Bard MC4000 installation instructions Contents

CONTENTS

Getting Other Information and Publications	3
MC4000 General Information
Shipping Damage	4
General	4
Theory of Operation	4
Controller Certifications	4
Specifications/Features for Basic Controller
MC4000 Basic Controller	5
Mounting the Controller
Installation Instructions	5
Temperature Sensors
Two Optional Sensor Inputs	5
Temperature Sensor Logic
Using Multiple Sensors	5
Controller Input/Output Specifications
MC4000 Controller Connections	6
Specifications/Features for Alarm Boards
MC4000-A with Optional Base Alarm	6
MC4000-B with Enhanced Version Alarm	6
Low Voltage Field Wiring
Circuitry in the MC4000	7
Controller Grounding
Earth ground	7
Controller Power-Up
Time Delay on Power-Up	7
Fire Suppression Circuit
Disabling the MC4000	7
Staging Delay Periods
Stages 1 - 4	7
Blower Operation
Various Blower Options	7
Advance (Swap) Lead/Lag Unit Feature
Manual Switching of Units	7
Accelerate Timer Feature
Testing the Timer Function	7
General Programming Overview
Buttons & Function	8
Humidity Control Option
Adding Optional Humidity Control	9
Cooling Operating Sequences
for Alternating Lead/Lag/Lead/Lag Config	9-11
Cooling Operating Sequences
for Non-Alt Lead/Lead/Lag/Lag Config	11-13
Heating Sequence of Operation	13
Specifications Opt. Remote Comm. Board ....	14-15
CB4000 Communications Board	15
Controller Wiring
Refer to Connection Diagram	16
Security (Locking) Feature
Locking and Unlocking the MC4000	16
Generator Run Feature
Standby Generator Disable Operation	16
Backup DC Power Connection
Input Connections Available	16
Alarm Wiring	31
2nd Stage Cooling Alarm	31
Refrigerant Pressure Alarms	31
Emergency Ventilation Sequence	31
Programming Instructions	34

Figures
Figure 1	Controller Connections 1-Stage (WA/WL, W**A/
	W**L Series) A/C w/No Economizers	17
Figure 2 Controller Connections 2-Stage (WA*S/WL*S
	Series) A/C - No Economizers	18
Figure 3	Controller Connections 1-Stage (WA/WL, W**A/
	W**L Series) A/C - No Econo with Alarm Board &
	CB4000 Comm. Board	19
Figure 4 Controller Connections 2-Stage (WA*S/WL*S
	Series) A/C - No Econo with Alarm Board &
	CB4000 Comm. Board	20
Figure 5	Controller Connections 1-Stage (WA/WL, W**A/
	W**L Series) A/C-Older EIFM Econo	21
Figure 6 Controller Connections 2-Stage (WA*S/WL*S
	Series) A/C-Older Style EIFM Econo	22
Figure 7	Controller Connections 1-Stage (WA/WL, W**A/
	W**L Series) A/C w/Older Style EIFM Econo &
	w/Alarm Board/CB4000 Comm. Board ... 23
Figure 8 Controller Connections 2-Stage (WA*S/WL*S
	Series) A/C w/Older Style EIFM Econo & w/Alarm
	Board/CB4000 Comm. Board	24
Figure 9	Controller Connections 1-Stage (WA/WL, W**A/
	W**L Series) A/C w/ECONWMT Econo .. 25
Figure 10 Controller Connections 2-Stage (WA*S/WL*S
	Series) A/C w/ECONWMT Econo	26
Figure 11	Controller Connections 1-Stage (WA/WL, W**A/
	W**L Series) A/C w/ECONWMT Econo & w/Alarm
	Board/CB4000 Comm. Board	27
Figure 12 Controller Connections 2-Stage (WA*S/WL*S
	Series) A/C w/ECONWMT Econo & w/Alarm
	Board/CB4000 Comm. Board	28
Figure 13	Controller Connections Heat Pumps -
	No Economizers	29
Figure 14	Controller Connections Heat Pumps -
	No Economizers w/Opt. Alarm Board &
	CB4000 Communication Board	30
— — —	Alarm LED Display Board	31
Figure 15	Alarm Board Connections for Normally Closed
	"NC" Open-On-Alarm Strategy	32
Figure 16 Alarm Board Connections for Normally Open
	"NO" Close-On-Alarm Strategy	33
— — —	MC4000 Label	35
Figure 17	Parts List Description Diagram	36
Tables
Table 1	Hook-Up Diagram Selection	17
Table	Parts List	37

Manual	2100-563C
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