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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
75 74-2958—1
MaxClRamp nciAux1SetPt ubMaxClRampS0 Degrees F/Hr
0 to 20
Degrees C/Hr
(0 to 11)
6 P X X MaxClRamp is the maximum cool recovery ramp rate in degrees F
per hour. This value is used to control the adaptive recovery ramp
rate during the COOL recovery period. The setpoint is changed at a
rate in degrees F per hour depending on the outdoor air temperature
and the MinClRamp, OdTempMaxClRamp, and OdTempMinClRamp
parameters. If there is no outdoor air temperature sensor available,
then MinClRamp is used as the recovery rate. Refer to the NOTE in
the comments column for MaxHtRamp for the conditions that
recovery ramping applies to.
MinClRamp nciAux1SetPt ubMinClRampS0 Degrees F/Hr
0 to 20
Degrees C/Hr
(0 to 11)
2 P X X MinClRamp is the minimum cool recovery ramp rate in degrees F
per hour. This value is used to control the adaptive recovery ramp
rate during the COOL recovery period. The setpoint is changed at a
rate in degrees F per hour depending on the outdoor air temperature
and the MaxClRamp, OdTempMaxClRamp, and
OdTempMinClRamp parameters. If there is no outdoor air
temperature sensor available, then MinClRamp is used as the
recovery rate. Refer to the NOTE in the comments column for
MaxHtRamp for the conditions that recovery ramping applies to.
OaTempMaxClRp nciAux1SetPt ubOdTempMaxClRampS0 Degrees F
0 to 100
Degrees C
(-18 to 38)
70 P X X OdTempMaxClRamp is the maximum outdoor air temperature
parameter that is used to calculate the cool recovery ramp rate
setpoint. This value is used to control the adaptive recovery ramp
rate during the COOL recovery period. The setpoint is changed at a
rate in degrees F per hour depending on the outdoor air temperature
and the MaxClRamp, MinClRamp, and OdTempMinClRamp
parameters. If there is no outdoor air temperature sensor available,
then MinClRamp is used as the recovery rate. Refer to the NOTE in
the comments column for MaxHtRamp for the conditions that
recovery ramping applies to.
OaTempMinClRp nciAux1SetPt ubOdTempMinClRampS0 Degrees F
0 to 100
Degrees C
(-18 to 38)
90 P X X OdTempMinClRamp is the minimum outdoor air temperature
parameter that is used to calculate the cool recovery ramp rate
setpoint. This value is used to control the adaptive recovery ramp
rate during the COOL recovery period. The setpoint is changed at a
rate in degrees F per hour depending on the outdoor air temperature
and the MaxClRamp, MinClRamp, and OdTempMaxClRamp
parameters. If there is no outdoor air temperature sensor available,
then MinClRamp is used as the recovery rate. Refer to the NOTE in
the comments column for MaxHtRamp for the conditions that
recovery ramping applies to.
OaEconEnTemp nciAux1SetPt ubOdEconEnableTempS0 Degrees F
0 to 90
Degrees C
(-18 to 32)
70 P X X If Config.EconEnable is OD_TEMP, and the outdoor temperature is
less than OdEconEnableTemp, then outdoor air is judged suitable to
augment mechanical cooling. If Config.EconEnable is
SINGLE_ENTH and outdoor temperate is less than
ubOdEconEnableTemp (high limit), then outdoor air may be judged
suitable to augment mechanical cooling depending on the
relationship between calculated outdoor enthalpy and
OdEnthalpyEnable.
DiffEconEnTemp nciAux1SetPt ubDiffEconEnableTempS0 Degrees F Degrees C
0 to 90 (-18 to 32)
4 P X X If Config.EconEnable is DIFF_TEMP, and return air temperature
minus outdoor air temperature is greater than DiffEconEnableTemp,
then outdoor air is judged suitable to augment mechanical cooling.
Table 21. Control Parameters. (Continued)
User Address NvName Field Name
Engineering Units: English
(Metric) or States plus Range
Digital State or
Value of State
Default
E-Vision (M, P, S)
Share
Map
Direct Access
Hardware Config.
Manual Config.
Test
E-Vision Legend: (M) Monitor, (P) Parameter, (S) Schematic
Comments