Honeywell EXCEL 5000 User Manual page 183

EXCEL CARE CONTROL ICONS
High speed cooling factor
Max. outside air temperature
for opt.switch off
Optimum stop factor
Factor adaption
Factor adaption
Parameter Number
Descriptions
EOV Operation
P8 Units: Min/F Deg, Default: 10, Range: 0 to 100
Cool-down rate for optimum start. When the plant is turned on for cooling, this
value is the number of minutes it takes to decrease room temperature by 1
degree This value can be automatically adjusted if the adaptation option is
enabled.
P9 Units: Deg, Default: 24, Range: 15 to 40
Maximum outside air temperature for optimum stop. When outside air
temperature is at or above this value,the stop time will not be advanced in
cooling mode.
P10 Units: Min/F Deg, Default: 10, Range: 0 to 100
Optimum stop factor. For optimum stop during cooling, this value sets the
amount of influence that the difference between room temperature and its
setpoint has on advancing or retarding the optimum stop calculation. The base
stop time is 120 minutes before the schedule stop time. For every degree that
the room temperature is above setpoint, the base stop time will be decreased
by the value of this parameter. For every degree that the room temperature is
below setpoint, the base setpoint will be increased by the value of this
parameter. Set to 0 to make optimum stop during cooling solely dependent on
outside air temperature.
P11 Adaption (0=enable, 1=disable, 2=restart)
P3 Lowest preheat time for optimized preheat
P4 High-speed preheat factor (time required for X3 to rise 1K)
P5 Optimum stop OAT low limit for optimized shutdown (heating)
P6 Optimum stop factor (heating)
P7 Lowest cooling time for optimized cooling
P8 High-speed cooling factor (time required for X3 to decrease 1K)
P9 Maximum OAT for optimized shutdown (cooling)
P10 Optimum stop factor (cooling)
P11 Factor adaptation (for adapting P4 and P8):
0=enable
1=disable
2=new start/enable (restarts adaptive calculations, which overwrites
previously gathered data and starts adapting P4 and P8 from scratch)
P12 Room temperature setpoint (if X2 is not connected to a user address)
EOV works exclusively on the basis of the "test room" method, that is, a room
sensor is required. X3 is the input for the room sensor. In addition, EOV requires a
room temperature setpoint (X2 or a parameter input), OAT sensor (X4), and the user
address for the Time Program switch point (XD1).
Optimized Start-up in the Heating Mode
When the system is in heating mode (XD5=1), EOV displaces point switch-on
(start-up) by time (t VHE ) to guarantee room temperature setpoint is reached by
start-up. The displacement of the switch-on point depends on the difference
between the room temperature setpoint and actual room temperature. EOV
assumes a linear room model.
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ALPHABETIC REFERENCE
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)