Carrier TruVu VAVB3-E2 Installation And Startup Manual page 137

Environmental Index
Environmental Index (EI) – Initial Occupied value is 100%. A value of 0% means the zone
is Unoccupied. If the space temperature deviates from Effective Heat Setpoint and
Effective Cool Setpoint range, the value is derated. EI supports an optional RH and/or
CO sensor. The RH and/or CO
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EI Time Satisfied – Percentage of Occupied time during which a zone maintains an EI of
70% or higher.
Weighted EI – Determines the priority of a zone in an EI roll-up, which must be
completed using a different control program.
EI Total Weight – Current EI Weighting Factor used to scale the Weighted EI.
EI Decreased By – Source(s) of an EI value reduction.
Options:
Temp – EI decreased by Space Temperature
Temp & RH – EI decreased by Space Temperature and Relative Humidity
Temp, RH, & CO2 – EI decreased by Space Temperature, Relative Humidity, and CO2
RH – EI decreased by Relative Humidity
RH & CO2 – EI decreased by Relative Humidity and CO2
CO2 – EI decreased by CO2
Temp & CO2 – EI decreased by Space Temperature and CO2
None – No source(s) decreasing Environmental Index value
EI Space Temp Setpoint Tolerance – Expands the ideal heating and cooling setpoint
range for EI temperature sensitivity.
EI Humidity Low Limit – Setpoint value that relative humidity must drop below in order to
decrease an EI Value.
EI Weighting Factor – Creates a weighted average of a zone EI value by indicating the
priority of that zone in an EI roll-up. A value of 0 disables the zone from an EI roll-up.
TruVu™ VAVB3-E2
Installation and Start-up Guide
values could also derate an EI.
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131
Appendix A: TV-VAVB3-E2 Points/Properties
R: 0 to 100%
R: 0 to 100%
R: 0 to 100000.0
R: 0 to 1000.0
R: Temp
Temp & RH
Temp, RH, & CO2
RH
RH & CO2
CO2
Temp & CO2
None
D: 0.5 °F (.27 °C)
R: 0 to 5 °F
(0 to 2.7 °C)
D: 30%
R: 0 to 100%
D: 1
R: 0 to 1000.0
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