Temporary Temperature Change (Pausing The Schedule) - Lennox ComfortSense L7742U Programming And Application Manual

Temporary Temperature Change (Pausing the Schedule)

Two types of temperature changes may be made: temporary (while in
the SCHEDule ON mode) or permanent (while in SCHEDule OFF).
NOTE − If autochangeover is enabled at the time a temperature hold is
invoked, the thermostat MAY CHANGE OVER from heating to cooling
and vice versa, to maintain the temperature hold setpoint. The
autochangeover deadband (minimum separation between the heat and
cool set points) is still used to determine whether changeover occurs.
This applies to all of the following hold modes.
Temporary Temperature Changes (schedule ON)
While the system is running with the schedule ON, any change to the
temperature settings may be made for the default time (approximately 3
hours) or for as long or short a time as you wish. Therefore, following the
procedure will set a HOLD on the schedule for a few hours or for up to
45 days. Figure 14 shows a typical screen set in the AUTOchangeover
mode. If the SYSTEM were set in HEAT, COOL, or EM HEAT mode,
only the top set of arrows appear.
1. On the home screen, press the UP or DOWN arrow to adjust to
the desired temperature.
2. A set of arrows appears to the right of the information display; use
these arrows to adjust the hold period for as long as desired, or,
if not changed, this setting will hold for approximately 3 hours.
3. Press SAVE.
4. After saving, ON" next to the SCHED button flashes slowly, and
the information display alternates between the following:
HOLD SETTING UNTIL
WKD MMM DD HH:MMMM
and
PRESS SCHED TO
RESUME PROGRAM
5. After the 3 hours expires, the scheduled programming will re-
sume, OR, press SCHED to cancel the hold.
Permanent Temperature Changes (schedule OFF − non−
programmable operation)
To make a change for an undefined time span, the schedule must be
turned OFF. The setpoint is maintained indefinitely.
1. From the home screen, press SCHED to turn the scheduled pro-
gramming OFF.
2. Press the UP or DOWN arrow to set the temperature to the
desired temperature.
The information display field continues to display the active mode, out-
door temperature, indoor relative humidity. Turning the schedule back
ON (press SCHED box on home screen) will cancel a permanent hold
and return to the event-programmed mode.
HOLD SETTING UNTIL
Figure 14. Setting a Hold on the Schedule
Page 31 ComfortSenset Model L7742U Touch Screen 7−Day Programmable Thermostat
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