47
MENU J
– FACTORY SETTINGS (factory level) continued
Variable Compressor
Band:
18.0
• Integration Time:
400s Derivative:
0
C1 Offset:
2.0•
C1 Off Delay:
60s
Minimum Speed: 1500RPM
Maximum Speed: 6000RPM
Note: The Variable Compressor screen is only displayed when the compressor
selection is set for a variable compressor.
The variable compressor will modulate to maintain the mode selected in the
previous screen.
Band:
This setting determines the sensitivity of the algorithm. The smaller the
band, the more the algorithm will try to correct the error. If the band setting is too
low, the system will oscillate by being over-responsive. If the band setting is
too high, compressor speed may lack responsiveness. Ideally, the band
s et t ing s hou ld be as lo w a s possible without causing oscillation. Range of
adjustment is 1.0 to 99.0°F with a default of 18.0°F. (48.0 for IRDX model).
Integration Time:
Used to slowly shift the compressor speed level to correct the
error between temperature reading and set point. The higher Integral time setting,
the slower the compressor speed will change. If the Integral time is set too low the
compressor speed could change quickly, causing oscillation. If Integral time setting
is too high, compressor speed may become sluggish to change. A setting of 0s
puts the algorithm in a proportional only mode. Range of adjustment is 0 to 5000s.
If set to Return Temp Control, the default is 1000s.
If set to Discharge Temp Control, the default is 400s.
Derivative:
Causes a sudden change in fan speed to correct the error as a result
of a quick change in temperature. Typically, the derivative setting is about a sixth
of the Integral time setting. Range of adjustment is 0 to 999s with a default of 0s
(no derivative factor used).
C1 Offset:
Is the amount that the temperature must drop below the Setpoint
before the variable compressor is turned off. Range of adjustment is 0.0 to 9.9°F
with a default of 1.0°F (2.0°F default if set to control discharge air temperature).
C1 Off Delay:
This is the time delay before C1 can turn off once temperature is
satisfied. Range of adjustment is 0 to 999s with a default of 60s.
Summary of Contents for dap4 touch
Page 1: ...1 dap4 User Manual Data Aire Inc 230 W BlueRidge Avenue Orange CA 92865 www dataaire com...
Page 33: ...32 MENU F INFORMATION differently from what is written in this manual...
Page 69: ...66 MENU K ALARMS LIMITS Service Level continued Control Only...
Page 82: ...78...
Page 133: ...129 Wiring Connections...
