Dry Contact Operation - Daikin TSTATD4271C Installation And Maintenance Manual

Fan Off Delay in Seconds
(Setup Step 55)
This feature allows the user to increase the cooling or electric
strip heating efficiency of the system. The thermostat may be
programmed to continue running the fan after a call for cooling
or electric strip heating has been satisfied. This delay can be set
for 0, 30, 60, 90, or 120 seconds. If set to 0, the fan will not run
after a call for cooling or electric strip heating has been satisfied.
Fahrenheit or Celsius
(Setup Step 56)
This feature allows the thermostat to display temperature in
Fahrenheit or Celsius.
Comfort Recovery
(Setup Step 69)
Comfort Recovery turns on the heat before the Occupied start
time to bring the room temperature to the Occupied setpoint
at the start of the Occupied time period. Please allow 4-8
days for Comfort Recovery time to adjust. When used with a
heat pump, electric strip heat will be disabled while Comfort
Recovery is active.

Dry Contact Operation

(Setup Step 70 - 71)
Dry Contact Polarity
(Setup Step 70)
Figure 11: Dry Contact Positions
Open (Normally Open)
The dry contact is open until
the connected device closes
the circuit.
Dry Contact Use
(Setup Step 71)
PAN – If PAN is selected when the dry contact is active,
the thermostat will lockout the compressor terminal(s) and
"SERVICE DRAIN PAN" will appear on the display.
HOLIDAY/FORCE UNOCCUPIED – If Holiday is selected
when the dry contact is active, the thermostat will be forced
into Holiday Mode. *This setting may be used with time clocks
or twist timers to force the thermostat from Occupied to
Unoccupied.
Press Outdoor To Clear All Messages (setup step 79)
This feature allows the user to clear all current error messages
from the display.
IM 1227 • MODELS DC THERMOSTATS
Closed (Normally Closed)
The dry contact is closed until
the connected device opens
the circuit.
7-D P C
ay rogrammable
Resetting the Thermostat to the Factory
Default Settings (for default values see
on page 31)
If, for any reason, you desire to return all the stored settings
back to the factory default settings, follow the instructions below.
This will reset all Time Period and Advanced Programming to
the default settings. Any information entered prior to this reset
may be permanently lost.
Figure 12: Resetting Thermostat to Factory Defaults
1. Press and hold SETUP for 5
seconds. All icons will appear
on the display.
Keep pressing
the SETUP button
until you see this
screen.
2. After all the icons appear,
release SETUP. Press
and hold OUTDOOR for 5
seconds. DEFAULTS will
appear on the display.
Keep pressing the
OUTDOOR button
until you see this
screen.
3. After DEFAULTS appears,
release OUTDOOR. Press
SETUP to return to normal
operation.
14
D T
ommerCial igiTal hermosTaTs
Table 7
WARNING
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