JOHNSON CONTROLS
191
SECTION 7 – PARAMETER DESCRIPTIONS AND OPTIONS
FORM 145.05-NOM7
ISSUE DATE: 10/31/2019
7
MENU ITEM
DEFINITION
PRESSURES - SUCTION D
This is the suction pressure for compressor D.
PRESSURES - SUCTION E
This is the suction pressure for compressor E.
PRESSURES - SUCTION F
This is the suction pressure for compressor F.
PUMP START
This is a binary output that closes a dry set of contact that could be used to
initiate condenser water pump operation. This same connection is used for an
ISOLATION DAMPER programmed through the User Interface on the unit, but
they cannot be used together for the same unit.
RA ENTHALPY
This is a derived value and indicates the total heat content of the return air.
RAT HEATING SETPOINT
This parameter is programmed through the Setpoints key. The Primary Unit
Controller compares the return air temperature to this value in determining when
to place the unit into heating mode on a VAV or FlexSys unit or into the morning
warm up mode.
RAT COOLING SETPOINT
This parameter is programmed through the Setpoints key. The Primary Unit
Controller compares the return air temperature to this value in determining when
to place the unit into cooling mode on a VAV or FlexSys unit.
RAT SETPOINT FOR HIGH SAT
This parameter is programmed through the Setpoints key. When the return tem-
perature is equal to or less than this temperature the Active Supply Air Tempera-
ture Setpoint on a Variable Air Volume Unit is set to the SAT High Setpoint.
RAT SETPOINT FOR LOW SAT
This parameter is programmed through the Setpoints key. When the return tem-
perature is equal to or greater than this temperature the Active Supply Air Tem-
perature Setpoint on a Variable Air Volume Unit is set to the SAT Low Setpoint.
READY TO RUN COMP A
This is a derived value and means the minimum OFF time has been achieved
and all the safety circuits are closed and compressor A is ready to be energized.
The User Interface displays either YES or NO.
READY TO RUN COMP B
This is a derived value and means the minimum OFF time has been achieved
and all the safety circuits are closed and compressor B is ready to be energized.
The User Interface displays either YES or NO.
READY TO RUN COMP C
This is a derived value and means the minimum OFF time has been achieved
and all the safety circuits are closed and compressor C is ready to be energized.
The User Interface displays either YES or NO.
READY TO RUN COMP D
This is a derived value and means the minimum OFF time has been achieved
and all the safety circuits are closed and compressor D is ready to be energized.
The User Interface displays either YES or NO.
READY TO RUN COMP E
This is a derived value and means the minimum OFF time has been achieved
and all the safety circuits are closed and compressor E is ready to be energized.
The User Interface displays either YES or NO.
READY TO RUN COMP F
This is a derived value and means the minimum OFF time has been achieved
and all the safety circuits are closed and compressor F is ready to be energized.
The User Interface displays either YES or NO.
READY TO STOP COMP A
This is a derived value and means the minimum ON time has been achieved
and compressor A ready to be de-energized. The User Interface displays either
YES or NO.
READY TO STOP COMP B
This is a derived value and means the minimum ON time has been achieved
and compressor B is ready to be de-energized. The User Interface displays
either YES or NO.
READY TO STOP COMP C
This is a derived value and means the minimum ON time has been achieved
and compressor C ready to be de-energized. The User Interface displays either
YES or NO.
READY TO STOP COMP D
This is a derived value and means the minimum ON time has been achieved
and compressor D is ready to be de-energized. The User Interface displays
either YES or NO.
TABLE 43 -
DEFINITIONS (CONT'D)
