Carrier TruVu VAVB3-E2 - Page 137

Appendix A: TV-VAVB3-E2 Points/Properties
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131
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
2
sensor. The RH and/or CO
2
values could also derate an EI.
R:
0 to 100%
EI Time Satisfied – Percentage of Occupied time during which a zone maintains an EI of
70% or higher.
R:
0 to 100%
Weighted EI – Determines the priority of a zone in an EI roll-up, which must be
completed using a different control program.
R:
0 to 100000.0
EI Total Weight – Current EI Weighting Factor used to scale the Weighted EI.
R:
0 to 1000.0
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
R:
Temp
Temp & RH
Temp, RH, & CO2
RH
RH & CO2
CO2
Temp & CO2
None
EI Space Temp Setpoint Tolerance – Expands the ideal heating and cooling setpoint
range for EI temperature sensitivity.
D:
R:
0.5 °F (.27 °C)
0 to 5 °F
(0 to 2.7 °C)
EI Humidity Low Limit – Setpoint value that relative humidity must drop below in order to
decrease an EI Value.
D:
R:
30%
0 to 100%
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.
D:
R:
1
0 to 1000.0