VCB-X Operator Interface SD
VCB-X CONFIGURATION
53
Setpoint Screen #43 - Adaptive Defrost
Interval Adjustment
VCBX Spts ID 101
Adaptive Defrost
Interval Adj: 0 Min
Once initiated, the Defrost Mode is active until the Defrost Coil Tem-
perature Switch opens or until a 10 minute timer has expired. Enter a
value greater than zero to enable the Adaptive Defrost Adjustment of the
Heat Pump Defrost Interval (
Setpoint Screen #42
). This adjustment value
will be subtracted from the Heat Pump Defrost Interval if the Defrost
Mode lasts the entire 10 minutes. A proportion of this adjustment value
will be added to the Heat Pump Defrost Interval if the Defrost Mode
only lasts between 8 minutes and 0 minutes.
Description
Minimum
Default
Maximum
Adaptive Defrost Adj.
0 Min
0 Min
30 Min
Setpoint Screen #44 - Heat Wheel Defrost
Temperature Setpoint
VCBX Spts ID 101
Heat Wheel Defrost
Temp Setpt: 30
º
F
The unit will go into Heat Wheel Defrost Mode when the Outdoor Air
is below this setpoint.
Description
Minimum
Default
Maximum
Heat Wheel Defrost
0ºF
(0
º
C)
30ºF
(-1.1
º
C)
50ºF
(10
º
C)
Setpoint Screen #45 - Morning Warm Up or
Cool Down Temp
VCBX Spts ID 102
Morning WarmUp
Max Length.: 60 Min
Target Temp: 70
º
F
This setpoint is used to initiate both Morning Warm-up and Cool-down.
When the VCB-X is con
fi
gured for Morning Warm-up or Morning Cool-
down operation and the controller enters the Occupied Mode, the VCB-X
looks at the Return Air Temperature to determine if the unit should initiate
Morning Warm-up or Cool-down Mode. If the Return Air Temperature
is below the Morning Warm-up Target Temperature by 1°F and the Max
Length is greater than “0,” the VCB-X controller will initiate Heating.
This is considered Morning Warm-up and will run until the Return Air
Temperature rises above the Morning Warm-up Target Temperature or
until the Max Length Setpoint time expires. If the Return Air Temperature
is above the Morning Warm-up Target Temperature by 1°F and the Max
Length is greater than “0,” the VCB-X controller will initiate Cooling.
This is considered Morning Cool-down and will run until the Return
Air Temperature falls below the Morning Warm-up Target Temperature
or until the Max Length Setpoint time expires.
Description
Minimum
Default
Maximum
Morning Warm Up
Max Length
0 Min
60 Min
240 Min
Morning Warm Up
Target Temp
50ºF
(10
º
C)
70ºF
(21
º
C)
90ºF
(32.2
º
C)
Setpoint Screen #46 - Space Sensor
Calibration - Current and Offset
VCBX Spts ID 101
Space Sensor Cal
Current: 0.0
º
F
Offset.: 0.0
º
F
If the Space Air Temperature Sensor is reading incorrectly, you can
use this option to enter an offset temperature to adjust the Sensor’s
Temperature. Line 3 will display the current Space Air Temperature
reading. Enter a positive Sensor Calibration value in Line 4 to raise
the Space Temperature Sensor reading or a negative value in Line 4 to
lower the Sensor reading.
Description
Minimum
Default
Maximum
Space Sensor
Calibration Offset
-100.0ºF
(-55.5
º
C)
0.0ºF
(0
º
C)
100.0ºF
(55.5
º
C)
Setpoint Screen #47 - Return Air Temperature
Sensor Calibration - Current and Offset
VCBX Spts ID 101
Return Sensor Cal
Current: 0.0
º
F
Offset.: 0.0
º
F
If the Return Air Temperature Sensor is reading incorrectly, you can
use this option to enter an offset temperature to adjust the Sensor’s
Temperature. Line 3 will display the current Return Air Temperature
reading. Enter a positive Sensor Calibration value in Line 4 to raise
the Return Temperature Sensor reading or a negative value in Line 4 to
lower the Sensor reading.
Description
Minimum
Default
Maximum
Return Air Sensor
Calibration Offset
-100.0ºF
(-55.5
º
C)
0.0ºF
(0
º
C)
100.0ºF
(55.5
º
C)
VCB-X Setpoint Screens
