AIRSYS UNICOOL 11V1T3 - CHAPTER 6: SYSTEM PARAMETERS AND DEFAULT VALUES; Step Test and HVAC Configuration Parameters

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Chapter 5: System Parameters and Default Values
This section provides a listing of all changeable parameters in the PGD user interface. Authorized
technicians may use the information in this section to change factory settings. The main menu and
associated menu screens are covered in “Main Screen” on Page 52.
Step Test Menu Parameters
The Step Test menu is used to access the step test. See “Step Test” on Page 60 for additional information
and instructions for executing the step test.
HVAC Config Menu Parameters
The HVAC Config menu contains configuration options for the following components, each of which has
its own menu:
• Supply (Evaporator) Fan
• Condenser Fan
• EEV
• Compressor
• Inverter
• Alarms
Table 15: Parameters in the Supply Fan Menu
Menu Screen
Option
Description
Default
Supply Fan
Min Speed
Minimum allowed fan speed
30%
Max Speed
Maximum allowed fan speed
100%
Prime Power Fail
Maximum fan speed when the unit has no AC
Power
80%
Supply Fan PID
Kp
Proportional control setting
4.0
Ki
Integral control setting
30
Kd
Derivative control setting
0
DX Fan Speed
Fixed DX Max Speed
Supply fan speed when the compressor is on and
system is in fixed speed mode
100%
Variable DX Max
Speed
Supply fan speed when the compressor is on and
system is in normal speed (variable) mode
93%
Dehumidification
Speed
Supply fan speed during dehumidification
75%
Variable DX Min
Speed:
Minimum fan speed during mechanical cooling
70%