System Performance Microprocessor Controls; Temperature Control; Cooling/Heating Required; Cooling Operation (Cooling, Compressorized Direct Expansion And Chilled Water) - Liebert Mini-Mate2 MMD24E User Manual

7.0 S P
YSTEM ERFORMANCE
This section provides a detailed description of how the Liebert Mini-Mate2 responds to operator
inputs and room conditions.
7.1

Temperature Control

7.1.1

Cooling/Heating Required

The temperature control program for the microprocessor is based on a calculated percentage
requirement for cooling/heating.
7.1.2

Cooling Operation (Cooling, Compressorized Direct Expansion and Chilled Water)

Cooling is ACTIVATED when the temperature control calculates a requirement for cooling of 100%. It
is DEACTIVATED when the cooling requirement drops below 50%. The optional hot gas bypass is
energized when a call for cooling occurs, unless there is also a call for dehumidification.
Table 27 Cooling and dehumidification load response of hot gas bypass
Situation
Cooling only
Dehumidification only
Cooling with Dehumidification
M
ICROPROCESSOR
Response
ON
OFF
OFF
53

System Performance Microprocessor Controls

C
ONTROLS
® ™
Liebert Mini-Mate2