Honeywell EXCEL 10 W7752D - Manual (Page 42)

EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
EN2B-0285GE51 R0909 40
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
engineering units:
English (metric) or states
plus range
digital
state
or
value
default comments
nciCntrlSettings reheat_hysteresis SNVT_lev_percent
0 to 100%
5% This configuration variable specifies the hysteresis between switching
the reheat output ON and OFF.
nciCntrlSettings fan_min_on_time SNVT_time_sec
0 to 1200 seconds
0 This configuration variable specifies the minimum time the fan has to
run when commanded ON by the control algorithm. This time will be
ignored in case of smoke purge. The min_on_time starts as soon as
the fan is switched on.
nciCntrlSettings fan_min_off_time SNVT_time_sec
0 to 1200 seconds
0 This configuration variable specifies the minimum time the fan has to
remain OFF when commanded OFF by the control algorithm. This time
will be ignored in case of smoke purge. The min_on_time starts as
soon as the fan is switched OFF.
nciEnergyManag si_dlc_setpt_bump SNVT_temp_p
0 to 18 DDF (0 to 10 K)
3.6 DDF (2 K) This configuration variable is used to shift the temperature setpoint
during demand limit control load shedding. When nviDlcShed is
different from zero, the current occupancy setpoint will be decreased
by this value for heating and increased for cooling.
nciEnergyManag si_optstart_grad[0] SNVT_temp_p
-36 to 0 DDF/hr (-20 to 0
K/hr)
0 DDF/hr (0 K/hr) This configuration variable specifies the cooling gradient used by the
optimum start function to calculate the optimum time for starting to
decrease the effective setpoint smoothly from the unoccupied or
standby cooling setpoint to the occupied cooling setpoint.
nciEnergyManag si_optstart_grad[1] SNVT_temp_p
0 to 36 DDF/hr (0 to 20 K/hr)
0 DDF/hr (0 K/hr) This configuration variable specifies the heating gradient used to
determine the optimum time to start increasing the current effective
setpoint smoothly to the occupied setpoint at the beginning of
scheduled occupancy.
nciFcuConfig room_temp_sensor BYTE
NO_TEMP_SENSOR
NTC_NON_LINEARIZED
0
2 NTC_NON_LINEARIZE
D This configuration variable specifies whether a direct wired room
temperature sensor is connected to the node or a room temperature
value from the network is used.
nciFcuConfig fan_speed_switch BYTE
NO_SWITCH
THREE_POSITION
FOUR_POSITION
FIVE_POSITION
0
1
2
3 FIVE_POSITION This configuration variable specifies the type of fan speed switch on
the wall module.