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Temperature Range: Cool 66-90F (19-32C), Heat 60-80F (16-27C)
Temporary Temperature Override feature: 45-minute default setting, adjustable in 5-minute increments
Humidity control: Dehumidification only, Range 50-75%, Span is 5-10%. Requires special HVAC system with
dehumidification circuit
Pre-purge capability: Span 0-7200 seconds, default is 0
CO2 control: Range 500-2000 ppm, Span 50-500 ppm
Can optionally display space humidity, CO2, and outdoor temperature
Dedicated ventilation output
Outdoor sensor option, Bard PN 8403-061, can be used to:
o Limit minimum outdoor temperature for cooling operation
o Limit minimum outdoor temperature for heat pump operation (compressor lockout)
o Inhibit electric heat operation for heat pumps above selected outdoor temperature
Remote indoor sensor option, Bard PN 8403-062, can be used to with following options:
o Use remote indoor sensor only
o Average remote indoor sensor and on-board sensor
o Highest of connected sensors
o Lowest of connected sensors
Vertical mount, mounts to standard 2x4 handy-box installed vertically or horizontally
Off-white
Controller Connections: Terminal legend
Terminal Function Type Form
D
Dehumidification
Output
24VAC SPST RELAY
SC
24VAC to Relay Outputs D, A, W2
Power
A
Ventilation Call
Output
24VAC SPST RELAY
W2
2
nd
Stage Heating
Output
24VAC SPST RELAY
W1/E
1
st
Stage Heating/Emer. Heat
Output
24VAC SPST RELAY
SC
24VAC to Relay Outputs W1/E, Y2, Y1
Power
Y2
2
nd
Stage Compressor
Output
24VAC SPST RELAY
Y1
1
st
Stage Compressor
Output
24VAC SPST RELAY
Y0
Economizer
Output
24VAC SPST RELAY
SC
24VAC to Relay Outputs YO, O/B, G
Power
O/B
Reversing Valve
Output
24VAC SPST RELAY
G
Indoor Blower
Output
24VAC SPST RELAY
IN9
Not Used
ROS
Remote Occupancy Sensor
Input
Dry Contact (Input to GND)
GND
REM
Remote Temperature Sensor
Input
10K Type II Thermistor
+B
Communications
-A
Communications
OAT
Outdoor Air Temperature Sensor
Input
10K Type II Thermistor
LAS
Leaving Air Temperature Sensor
Input
10K Type II Thermistor
GND
Control Ground
L
Lockout Alarm
Input
Dry Contact (Input to GND)
Com
24VAC Common
Power
24V
24VAC Hot
Power
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Form No.
F1943
May, 2012
Supersedes: F1943-212
Due to our continuous product improvement policy, all
specifications subject to change without notice.
Before purchasing this appliance, read important energy cost
and efficiency information available from your retailer.
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