39
LOADSHED OFFSET ADJUST — This decision is used to
configure an amount by which the Occupied Heating and
Occupied Cooling set points will be relaxed in response to a
redline broadcast. The zone controller responds to a loadshed
event similar to a redline event, if the loadshed command is
preceded by a redline event.
Specifically, if the unit is already in redline when the load-
shed command is received, the zone controller will drop one
stage of heat if heating, provided there is more than one stage
available.
If the unit is in cooling, the zone controller uses the Load-
shed Offset Adjust to raise the cooling set point, if raising the
sepoint by this amount will cause the space to be satisfied.
Also, if the system experiences a loadshed event while not
in redline, it will treat the event as a redline event and raise
or lower the cooling and heating set points by the amount
configured in this decision.
Loadshed Offset
Adjustment:
Units
delta F (delta C)
Range
0 to 15
Default Value
2
MAXIMUM LOADSHED TIME — This decision is used to
specify the maximum amount of time that a redline or loadshed
event may affect this zone. A timer starts at the beginning of
the event and automatically terminates the event after this
configurable time limit.
Override:
Units
Minutes
Range
0 to 240
Default Value
60
CONTROL OPTIONS — The Control Options configuration
determines whether the zone controller will use a humidity
sensor or an indoor air quality sensor. A configuration of
0 means no sensors are used. A configuration of 1 means a
Humidity Sensor is used. A configuration of 2 means an IAQ
Sensor is used.
Control Options: Range
0 to 2
Default Value
0
DEMAND CONTROL VENTILATION — These configura-
tion values define the calculation parameters for determining
the airflow needed for demand control ventilation (DCV). The
Maximum Output Value is measured in percentage of nominal
terminal cfm.
Proportional
Gain:
Range
0.0 to 9.99
Default Value
0.10
Integral Gain:
Range
0.00 to 9.99
Default Value
0.03
Maximum Output
Value:
Range
0.0 to 100.0% (max cool
damper position)
Default Value
100.0
DCV LOW VOLTAGE — This decision is used to define the
lowest voltage that should be read from the demand control
ventilation sensor.
DCV Low
Voltage:
Units
volts
Range
0 to 10
Default Value
0
DCV HIGH VOLTAGE — This decision is used to define the
highest voltage that should be read from the demand control
ventilation sensor.
DCV High
Voltage:
Units
volts
Range
0 to 10
Default Value
10
DCV LOW REF (PPM) — This decision is used to define the
value in parts per million that correlate to the low voltage read-
ing from the demand control ventilation sensor.
DCV Low
Ref (ppm):
Units
ppm
Range
0 to 5000
Default Value
0
DCV HIGH REF (PPM) — This decision is used to define
the value in parts per million that correlate to the high voltage
reading from the demand control ventilation sensor.
DCV High
Ref (ppm):
Units
ppm
Range
0 to 5000
Default Value
2000
Set Point Configuration Table —
The Set Point Con-
figuration Table (SETPOINT) contains decisions used to con-
figure the zone controller's occupied and unoccupied heat and
cool set points. It is also used to configure the demand control
ventilation set point in parts per million (ppm). See Table 13.
OCCUPIED HEAT — The Occupied Heat set point is used to
configure the heating set point for the zone controller during
Occupied mode.
Occupied Heat:
Units
F (C)
Range
40.0 to 90.0
Default Value
70.0
OCCUPIED COOL — The Occupied Cool set point is used
to configure the cooling set point for the zone controller during
Occupied mode.
Occupied Cool:
Units
F (C)
Range
45.0 to 99.9
Default Value
74.0
UNOCCUPIED HEAT — The Unoccupied Heat set point is
used to configure the heating set point for the zone controller
during Unoccupied mode.
Unoccupied Heat: Units
F (C)
Range
40.0 to 90.0
Default Value
55.0
UNOCCUPIED COOL — The Unoccupied Cool set point is
used to configure the cooling set point for the zone controller
during Unoccupied mode.
Unoccupied Cool: Units
F (C)
Range
45.0 to 99.9
Default Value
90.0
DEMAND VENT (PPM) — This decision is used to config-
ure the ventilation set point for the zone controller if optional
Demand Control Ventilation support is used.
Demand Vent:
Units
ppm
Range
0 to 5000
Default Value
850
Table 13 — Set Point Configuration Table
DESCRIPTION
VALUE
UNITS
NAME
Setpoints
Occupied Heat
70.0
dF
OHSP
Occupied Cool
74.0
dF
OCSP
Unoccupied Heat
55.0
dF
UHSP
Unoccupied Cool
90.0
dF
UCSP
Demand Vent (ppm)
850
DCVSP
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