Additional Occupancy Features; Network Occupancy Sensor Capability; Internal Daily Schedule; Remote Wall-Mounted Sensor Tenant Override Switch - Daikin MicroTech Operation And Maintenance

Additional Occupancy Features

Network Occupancy Sensor Capability

A networked occupancy sensor can be interfaced with the
Occupancy Sensor Input variable to select occupancy modes.
When the Occupancy Sensor Input variable is used, it automatically
overrides any hard-wired unoccupied binary input signal.

Internal Daily Schedule

The UVC has a user configurable internal daily schedule
capable of two occupied times and two unoccupied times for
each of the seven days of the week, and one holiday schedule.
This internal schedule can be overridden through the LUI
keypad or network communications accordance with Table 11
on page 27. The internal schedule is set up through the LUI
keypad or ServiceTools software.
The UVC's real time clock maintains time through a power
cycle subject to the battery installed on the controller. If the
internal schedule is being used, it is recommended that
the battery be replaced every 2 years as part of a regular
maintenance program. See IM 1286 for more details.
Remote Wall-Mounted Sensor Tenant
Override Switch
The optional remote wall-mounted sensors include a tenant
override switch. This switch provides a momentary contact closure
that can be used by room occupants to temporarily force the UVC
into the bypass occupancy mode from unoccupied mode.
NOTE: The Occupancy Override Input can override the
tenant override feature. For example, if the network
uses the Occupancy Override Input to force the unit
into unoccupied mode, then the wall sensor tenant
override switch does not operate as expected.
Therefore, Daikin strongly recommends using the
Occupancy Sensor Input to control occupancy
modes over a network and only using the Occupancy
Override Input if there is reason to ensure tenant
override does not occur.

Remote Wall-Mounted Sensor Status LED

The optional remote wall-mounted sensors each include a UVC
status LED. This status LED aids diagnostics by indicating the
UVC occupancy mode and fault condition.
Table 12: Remote Wall-Mounted Sensor Status LED
Status LED
Condition
Mode
Alarm Active: Specific
ALARM_ACTIVE Alarm Determines
Number of Flashes
WINK Network Wink Activity
SERVICE_TEST Service Test Mode
UNOCC Unoccupied Mode
STANDBY Standby Mode
Occupied Bypass
OCC_BYPASS
Mode
OM 1280-2 • MICROTECH UNIT CONTROLLER
LED On LED Off
Priority
Time (Sec) Time (Sec)
0.3 (1.3
1 0.3 Between
Cycles)
2 3.0 3.0
3 0.0 Continually
4 0.5 5.5
5 5.5 0.5
6 Continually 0.0

Space Temperature Setpoints

The UVC uses the six occupancy-based temperature setpoints
as the basis to determine the Effective Setpoint Output. The
effective setpoint is calculated based on the unit mode, the
occupancy mode, and the values of several network variables.
The effective setpoint then is used as the temperature setpoint
that the UVC maintains.
Table 13: Default Occupancy-Based Temperature Setpoints
Temperature setpoint Abbreviation
Unoccupied cool
Standby cool
Occupied cool
Occupied heat
Standby heat
Unoccupied heat

Network Setpoint Capability

The Setpoint Input variable is used to allow the temperature
setpoints for the occupied and standby modes to be changed
via the network; the unoccupied setpoints are not affected by
this variable.

Network Setpoint Offset Capability

The Networked Setpoint Offset Input variable is used to shift
the effective occupied and standby temperature setpoints
by adding the value of the Setpoint Offset Input variable to
the current setpoints; the unoccupied points are not affected
by this variable. This variable is typically set bound to a
supervisory network controller or to a networked wall module
having a relative setpoint dial.
Use the keypad/display to make adjustments to the value
of the Setpoint Offset Input variable. See "Effective Setpoint
Calculations" on page 31.
NOTE: The keypad/display and the network both affect the
Setpoint Offset Input variable. Keep in mind that the
most recent change to this variable will be the one
that is used.
29
Description of Operation
Defaults
UCS 82.0°F (27.8°C)
SCS 77.0°F (25.0°C)
OCS 73.0°F (22.8°C)
OHS 70.0°F (21.1°C)
SHS 66.0°F (18.9°C)
UHS 61.0°F (16.1°C)
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