Carrier VVT Zone Installation And Startup Manual page 61

Hide thumbs Also See for VVT Zone:
Table of Contents

Advertisement

Point Name/Description
Cooling – (Occupied or Unoccupied, depending on mode) The current programmed Cooling
setpoint adjusted by any offset that may be in effect.
Learned cooling capacity – The cooling capacity learned by Learning Adaptive Optimal Start
that is required to bring the space temperature down to the occupied cooling setpoint prior to
the occupied time.
Learned heating capacity – The heating capacity learned by Learning Adaptive Optimal Start
that is required to bring the space temperature up to the occupied heating setpoint prior to the
occupied time.
Min Setpoint Separation
and cooling setpoints.
Optimal Start – The earliest time, prior to occupancy, at which the Optimal Start function may
begin to adjust the effective setpoints to achieve the occupied setpoints by the time scheduled
occupancy begins. Enter 0 to disable Optimal Start.
NOTE Optimal Start is automatically disabled when Properties > Equipment > Maintenance >
Occupancy > BAS On/Off is set to either Unoccupied or Occupied
Optimal Start Type – The method used to change from unoccupied to occupied setpoint.
Options:
None* – Unit will not change to occupied setpoint until the scheduled time or the unit goes into
an occupied mode. Setpoints do not ramp, but change immediately from unoccupied to
occupied values.
Temp Compensated* – Unit changes to occupied setpoints at a variable time prior to the
occupied time, which is calculated by the current error between space temperature and the
appropriate heating or cooling setpoint. At that time, the setpoints do not ramp, but change
immediately from unoccupied to occupied values.
Learning Adaptive Start – Unit gradually changes to occupied setpoints by adjusting the
unoccupied setpoints over a specified period of time to achieve the occupied setpoint by the
time scheduled occupancy begins.
*When selecting None or Temp Compensated
Start transition factors to 0.
Heat Start K factor (min/deg) – If Optimal Start Type is Temp Compensated
minutes per degree that the equipment starts before the occupied period when the space
temperature is below the occupied heating setpoint (including any setpoint offset).
Cool Start K factor (min/deg) – If Optimal Start Type is Temp Compensated
minutes per degree that the equipment starts before the occupied period when the space
temperature is above the occupied cooling setpoint (including any setpoint offset).
Standby Offset
– The value by which the occupied setpoints are expanded when the space
occupancy sensor indicates that the space is unoccupied. If 0, the unoccupied setpoints are
used.
Occupied RH Control Setpoint – If Optional Sensor Type is set to RH Sensor and RH Control is
set to Enable, this is the relative humidity setpoint during occupancy. The air source mode must
be Cool or Vent and the terminal mode must be Cooling or Vent
function can be active.
DCV Start Ctrl Setpoint – If Optional Sensor Type is set to IAQ Sensor and DCV Control is set to
Enable
, this is the value that the CO2 sensor must exceed to begin the DCV control function.
This value should be set to approximately 75 ppm above the outdoor air CO2 level.
VVT Zone Controller
– Minimum separation that must be maintained between the heating
, you MUST set all Learning Adaptive Optimal
.
, this is the time in
, this is the time in
before the dehumidification
Default/Range
R:
0 to 120°F
D:
4°F
R:
2 to 10°F
D:
1 hr
R:
0 to 4 hr
D:
Temperature
Compensated
R:
None
Temperature
Compensated
Learning Adaptive
D:
15.00
R:
0 to 99
D:
15.00
R:
0 to 99
D:
0°F
R:
0 to 15°F
D:
65%rh
R:
0 to 100%rh
D:
500ppm
R:
0 to 9999 ppm
57

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Opn-vvtzc

Table of Contents