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L3711C 7-DAY PROGRAMMABLE THERMOSTAT

2. Use the Up/Down arrow buttons to select the desired

hour; press the PROG button when the desired hour
is reached; use the Up/Down arrow buttons again to
select desired minute. The selected hour/minute is
when the program will start. Press the PROG button.

3. Use the Up/Down arrow buttons to select the desired

heat setpoint; press the PROG button.

4. Use the Up/Down arrow buttons to select the desired

cool setpoint; press the PROG button.

5. Repeat steps 1 − 4 for Monday, periods B, C, and D.

6.

COPY A PROGRAM

 − If the program entered for

Monday is satisfactory for other days of the week, do
the following to repeat the same program for other
days:

A

Press the PROG button, then press the COPY
button. The display clears the screen except for
Copy from MO with MO" flashing. Press the
COPY button again to copy Monday’s program.

B

The display changes to Copy to MO". Use the ar-
row buttons to scroll to the desired day where you
want the same program as Monday. Press the
COPY button.

C

Repeat steps A and B for as many days as you
want the same program.

Heat

Prog

Fan

Settings

Cool

Day/Time

Hold

Enter

(DOOR
OPEN)

Auto

Copy

(Outside)

Copy from MO

Figure 11. Copy a Programmed Day to Another

Day

7. Repeat steps 1  5 to program different times and tem-

peratures for days not yet programmed.

FAN − Controlling the Fan Operation

Use the FAN button to select either continuous fan mode or
auto fan mode.

To change from continuous to auto fan mode (or vice ver-
sa), press the FAN button. Note whether a fan icon in the
FAN box is present (indicating that the fan is running) or not
(fan not running).

If continuous fan mode is enabled (ON displayed in FAN
box − see figure 12), the fan will run continuously regard-
less of whether the heating or cooling equipment is run-
ning.

Heat

Prog

Fan

Cool

Day/Time

Hold

Auto

Copy

i0:30

72

Figure 12. Using Fan ON

If auto fan mode is selected (AUTO displayed in FAN box −
see figure 13), the fan will only run when the heating or
cooling equipment is running.

Heat

Prog

Fan

Cool

Day/Time

Hold

Auto

Copy

i0:30

72

Figure 13. Using Fan AUTO

Displaying Outside Temperature

Pressing the ENTER (Outside) button at the HOME
screen displays the outside temperature (see figure 14) for
several seconds, then returns to room temperature.

88

Fan

Settings

Hold

Enter

(Outside)

Figure 14. Check Outside Temperature

SETTINGS − Filter/Maintenance Reminders

The L3711C thermostat is designed to remind you when
the filter needs changing or when routine maintenance is
required, as (and if) defined, by you. These optional re-
minders are not enabled until you activate them. To do so,
press the SETTINGS button once or twice for the desired
reminder as shown in figure 15 and as described in table 1.

FILTER

OFF

MAINTENANCE

For FILTER, press SETTINGS
button 1 time

For MAINTENANCE, press
SETTINGS button 2 times

Figure 15. Reminder Settings Display

Summary of Contents for L3711C

Page 1: ...tochangeover Mode 3 HOLD Temperature Hold Mode 4 PROG Thermostat Programming 4 COPY Copy a Program 5 FAN Controlling Fan Operation 5 Displaying Outside Temperature 5 SETTINGS Filter Maintenance Reminder 5 Service Indicator 6 Thermostat RESET 6 Removing Installing Thermostat 6 Default Thermostat Settings 6 Thermostat Output Table 7 Technical Specifications 7 General These instructions are intended ...

Page 2: ...er input Start making changes within 15 seconds or the HOME screen will re turn Heat Prog Fan Settings Cool Day Time Hold Enter DOOR OPEN Auto Copy Outside Figure 3 Thermostat Buttons When an Arrow HOLD HEAT or COOL button is pressed SETPOINT and the temperature setting appears for 15 seconds If desired start making changes within 15 sec onds or the HOME screen will return The backlight will turn ...

Page 3: ...he right side of the display see figure 7 Heat Prog Fan Settings Cool Day Time Hold Enter DOOR OPEN Auto Copy Outside 66 i0 30 75 70 Figure 7 Turn Cool ON OFF If the thermostat is in cool mode pressing the COOL but ton disables cool mode indicated by OFF similar to figure 5 Cooling Demand Set the thermostat to cool mode to control the cooling equipment Then if the room temperature is higher than t...

Page 4: ...HOLD flashes see figure 9 This overrides the program for 2 hours from the last button press then returns to the program While in Temporary Hold press HOLD once to switch to Permanent Hold HOLD displays solid PROG not dis played press HOLD again to return to the program PROG displays HOLD not displayed Heat Prog Fan Settings Cool Day Time Hold Enter DOOR OPEN Auto Copy Outside 68 i0 30 72 70 Figure...

Page 5: ...ling the Fan Operation Use the FAN button to select either continuous fan mode or auto fan mode To change from continuous to auto fan mode or vice ver sa press the FAN button Note whether a fan icon in the FAN box is present indicating that the fan is running or not fan not running If continuous fan mode is enabled ON displayed in FAN box see figure 12 the fan will run continuously regard less of ...

Page 6: ...om a qualified service technician Thermostat RESET Under some abnormal conditions it may be necessary to reset the thermostat to its default condition Such a RE SET would delete all programming and settings and there fore should only be used on rare occasions when the the thermostat fails to function as designed and or as pro grammed Such an instance can occur as a result of a pow er surge or simi...

Page 7: ...shown in Celsius position 1 2 3 4 5 6 7 PLUG IN Use Care To Avoid Bending Prongs Figure 17 Changing Fahrenheit Celsius Setting Indoor Temperature Measurement Range Measurement Scale Fahrenheit Measurement Range 35 F to 99 F Measurement Resolution 0 5 F Measurement Accuracy 1 F Field Offset via DIP switches to 3 F Sampling Method temperature measurements sampled every 15 seconds Displayed temperatu...

Page 8: ...ce Reminder Settings of Off 6 or 12 months of chronological time are available When programmed time has elapsed a MAIN TENANCE indicator is displayed Service Reminder The SERVICE indicator is displayed only under the follow ing conditions S if the thermostat Y1 terminal has been activated with 24VAC for at least 5 minutes AND the L terminal is shorted to the R terminal OR S if the thermostat Y1 te...

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