Hold - Using Temperature Hold Modes; Prog - Thermostat Programming - Lennox ComfortSense 3000 Series Operation Manual

HOLD - Using Temperature Hold Modes

When HOLD is displayed at the HOME screen, the
thermostat is in a temperature hold condition. This means
that the temperature program data is ignored and the
thermostat functions much like a non-programmable
thermostat.
Adjusting Temperature Setpoint in Hold Mode
The temperature setpoint
temperature of the space around the thermostat. The
default temperature setpoint in Hold mode is 70°F.
To adjust the setpoint, press the UP or DOWN (▲▼ ) arrow
buttons (see figure 9); the existing setpoint is displayed to
the right of the actual room temperature. Each button press
adjusts the setpoint up or down by 1 degree.
Figure 9. Temporary Hold Temperature Mode
After the desired setpoint is reached, the HOME screen will
reappear after about 15 seconds.
Permanent Hold Mode
At any time the program is running, from the HOME screen,
set a permanent hold (program override) by pressing the
HOLD button (see figure 9). The thermostat now functions
much like a non-programmable thermostat. Use the Up/
Down arrow buttons to adjust the hold setpoint. To return to
the program, press HOLD again.
Temporary (2-Hour) Hold
At any time the program is running, from the HOME
screen, set a temporary 2-hour hold by pressing the Up/
Down arrow buttons until the desired setpoint is displayed;
"HOLD" flashes (see figure 10). This overrides the program
for 2 hours from the last button press, then returns to the
program.
Figure 10. Temporary Hold Temperature Mode
While in Temporary Hold, press HOLD once to switch
to Permanent Hold (HOLD displays solid; PROG not
displayed); press HOLD again to return to the program
(PROG displays; HOLD not displayed).
represents the desired

PROG - Thermostat Programming

The L3511C thermostat can be programmed to perform a
set of either heating or cooling events (but not a combination
of heat and cool) for 5 consecutive days using a set of 4
unique events per day. The remaining 2 days can then be
set for a different set of 4 unique events per day. Both the
consecutive days and the events/temperature are set by
the homeowner.
To Change Consecutive Days...
To alter the 5 consecutive days, press and hold the PROG
button for 5 seconds. The existing 5 consecutive day period
is then displayed (default is MOnday thru FRiday). To change
to a different 5 consecutive days, use the Up/ Down arrow
buttons. Any 5 consecutive-day span may be selected,
for example, in figure 11, Saturday through Wednesday is
defined as the 5-day programming (Thursday and Friday
would constitute the 2-day programming). Press the PROG
button when finished.
Figure 11. Change Consecutive days
To Set Program Events and Temperatures...
Figure 12 gives an example of how the two sets of programs
can be set for a normal workweek and weekend.
In the 5-day bar graph, note how programs A and C reflect
the desired warmth while the home IS occupied (72°); B
allows less heating while the home is NOT occupied; D
reflects a cool sleeping temperature. The 2-day bar graph
would support day-long occupancy and, because the first
program begins later, a less-demanding time schedule.
Figure 12. 5/2 Program Example
NOTE: Pressing ENTER during the following programming
steps, saves and exits to the HOME screen.
To program events and temperatures, perform the following
steps, once with Cool selected and once with Heat selected.
1. Press and release PROG. "AM 6:00", period "A", and
the 5 consecutive days are displayed; "AM 6" flashes.
2. Use the Up/Down arrow buttons to select the desired
hour; press PROG when the desired hour is reached.
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