T500 Series Programmable Thermostats Product/Technical Bulletin
19
O
verride
Constant Hold
To maintain a constant temperature setting:
1. Press the
Mode
button until the desired mode is
displayed (heating, cooling, auto).
2. Press the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to set the desired
setpoint(s).
Note: If the Auto mode is used, press
Mode
twice,
and press the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to select a
cooling setpoint. Press
Mode
again, and the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to select a heating setpoint.
Press
Mode
again to set the mode back to
Auto.
3. Press the
Hold
button. Setpoint(s) will be
maintained continuously.
4. Pressing and releasing the
Resume
button will
cancel the
Hold
and return to programmed
setpoints.
Mode
Clock
Set Temp
Outdoor
Fan
Program
ResumeHold
66
HOLD
Mo
AM
Press for
constant
hold.
Figure 23: Constant Override (Hold)
Progressive Recovery
During the night mode the thermostat is designed to
anticipate a programmed setpoint change. With
Progressive Recovery, the desired temperature will be
attained at the programmed time instead of beginning
the temperature cycle change. Recovery option is
selected by pressing the
Program
and
Fan
buttons
simultaneously.
Temporary (3 Hour) (Keyboard
Unlocked)
To implement a temporary change from the current
event setpoint for a 3-hour period:
1. Press the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to change the scheduled
setpoint
±
3
°
C or
±
6
°
F. The current mode of
operation will appear on the display and an
hourglass symbol
will appear. The temporary
setpoint will be maintained for 3 hours.
Note: If the Auto mode is used, press
Mode
, and
press the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to select a heating
setpoint. Press
Mode
again, and the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to select a cooling setpoint.
2. Pressing and releasing the
Resume
button will
cancel the override and return to the programmed
setpoint at any time during the 3 hours.
Note: If the setpoint is altered while in the night
mode, the thermostat will change to the day
mode setting.
Temporary (1 Hour) (Keyboard Locked)
To implement a temporary change from the current
event setpoint for a 1-hour period:
1. Press the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to change the scheduled
setpoint. The current mode of operation will appear
on the display and an hourglass symbol
will
appear. The temporary setpoint will be maintained
for 1 hour.
Note: If the Auto mode is used, press
Mode
, and
press the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to select a heating
setpoint. Press
Mode
again, and the
∨
∨∨
∨
or
∧
∧∧
∧
buttons to select a cooling setpoint.
2. Pressing and releasing the
Resume
button will
cancel the override and return to the programmed
setpoint at any time during the 1 hour.
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