Honeywell W7750A MaxClRamp NciAux1SetPt UbMaxClRampS0 Degrees F/Hr, MaxClRamp, OdTempMaxClRamp

Table 21. Control Parameters. (Continued)

Value

Digital

E-Vision

Direct

Hardware

Manual

E-Vision Legend: (M) Monitor, (P) Parameter, (S) Schematic

User Address

NvName

Field Name

(Metric) or States plus Range

ofState

Stateor

Default

(M, P,S)

Share

Map

Access

Config.

Config.

Test

Comments

Engineering Units: English

MaxClRamp

nciAux1SetPt

ubMaxClRampS0

Degrees F/Hr

6

P

X

X

MaxClRamp is the maximum cool recovery ramp rate in degrees F

0 to 20

per hour. This value is used to control the adaptive recovery ramp

Degrees C/Hr

rate during the COOL recovery period. The setpoint is changed at a

(0 to 11)

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

2

P

X

X

MinClRamp is the minimum cool recovery ramp rate in degrees F

0 to 20

per hour. This value is used to control the adaptive recovery ramp

Degrees C/Hr

rate during the COOL recovery period. The setpoint is changed at a

(0 to 11)

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.

75

OaTempMaxClRp

nciAux1SetPt

ubOdTempMaxClRampS0

Degrees F

70

P

X

X

OdTempMaxClRamp is the maximum outdoor air temperature

0 to 100

parameter that is used to calculate the cool recovery ramp rate

Degrees C

setpoint. This value is used to control the adaptive recovery ramp

(-18 to 38)

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

90

P

X

X

OdTempMinClRamp is the minimum outdoor air temperature

0 to 100

parameter that is used to calculate the cool recovery ramp rate

Degrees C

setpoint. This value is used to control the adaptive recovery ramp

(-18 to 38)

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

70

P

X

X

If Config.EconEnable is OD_TEMP, and the outdoor temperature is

0 to 90

less than OdEconEnableTemp, then outdoor air is judged suitable to

Degrees C

augment mechanical cooling. If Config.EconEnable is

(-18 to 32)

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

74-

OdEnthalpyEnable.

DiffEconEnTemp

nciAux1SetPt

ubDiffEconEnableTempS0

Degrees F

Degrees C

4

P

X

X

If Config.EconEnable is DIFF_TEMP, and return air temperature

2958

0 to 90

(-18 to 32)

minus outdoor air temperature is greater than DiffEconEnableTemp,

then outdoor air is judged suitable to augment mechanical cooling.

— 1

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER