Daikin MicroTech III Operation Manuals page 91

Determining Application Mode
The unit heating and cooling can be set up for automatic
heat/cool, heat only, cool only or fan only operation based
on a network signal by setting the Control Mode parameter
to "Auto ." With the Control Mode parameters set to "Auto,"
the heat/cool, cool only, heat only, and fan only decision is
determined by the Net App Mode . The Net App Mode is set
by a network signal. The following sections describe the five
available Net App Mode selections .
NOTE: The Net App Mode has no effect on the unit operation
unless the Control Mode parameter is set to "Auto . "
Off
When the Net App Mode is set to "OFF," the Unit Status is "Off
Net" and the unit is completely disabled, including unoccupied
heating (night set back) and unoccupied or unoccupied cooling
(night set up) operation .
Heat Only
When the Net App Mode is set to "Heat Only," heating
operation is allowed to operate as required to maintain the
heating set points . Cooling operation is disabled (Cooling
Status is "Off Net") .
Cool Only
When the Net App Mode is set to "Cool Only," cooling
operation is allowed to operate as required to maintain the
cooling set points . Heating operation is disabled (Heating
Status is "Off Net") .
Fan Only
When the Net App Mode is set to "Fan Only," the fans are
allowed to operate but cooling and heating operation is
disabled (Cooling Status and Heating Status are "Off Net") .
Auto
When the Net App Mode is set to "Auto" heating and cooling
operation are allowed to operate as required to maintain the
heating and cooling set points .
www .DaikinApplied .com
Determining Occupancy Status
Occupancy is a status item which indicates whether the unit
is in an occupied, unoccupied or tenant override mode of
operation .
The following are descriptions of the various "Occupancy"
states .
Occ
The Occupancy parameter indicates "Occ" when the unit is
in the occupied mode . In this mode, the unit starts and runs
continuously, cooling and heating as required to maintain the
occupied temperature set points . The unit is in the occupied
mode if any of the following conditions are true:
• The Occ Mode entry on the keypad is set to occupied
• The Occ Mode entry on the keypad is set to Auto, and
a manual network occupancy command is sent to the
controller
• The Occ Mode entry on the keypad is set to Auto, a
manual network occupancy command is set to Auto, and
any of the following is true:
• The External Start/Stop switch is closed
• A network schedule signal is set to Occupied or Standby
• The internal schedule function is in the Occupied
condition
Unocc
The Occupancy parameter indicates "Unocc" when the unit
is in the unoccupied mode . In this mode, the unit remains
off unless unoccupied operation becomes active . When
unoccupied operation is active the unit operates normally
except that Minimum OA Position is set to zero . See
Unoccupied Operation,
when unoccupied operation is activated .
TntOvrd
The Occupancy parameter indicates "TntOvrd" when the unit
is in the tenant override mode . In this mode, the unit starts and
runs continuously, cooling and heating as required to maintain
the occupied temperature .
91 OM 920-6 • MICROTECH UNIT CONTROLLER
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