Thermostat Operation; Dip Switch Settings - Lennox ComfortSense L3511C Installation Instructions Manual

Figure 1. L3511C Terminal Strip
Figure 2. L3522C Terminal Strip
Figure 3. L3532H Terminal Strip

Thermostat Operation

NOTE: The thermostat heating mode will not operate if the
thermostat has been stored or is being used at ambient
temperatures that are above 93°F. The heating function
will be enabled after the thermostat is exposed to ambient
temperatures below 93°F for about 30 minutes.

DIP Switch Settings

DIP Switch Settings
L3511C, L3522C, and L3532H thermostats include six DIP
switches which are located on the back side of the thermo-
stat body. These switches may be used to re−calibrate the
(Wired)
thermostat (Cal 1, Cal 2 and Cal±) and to select the ther-
mostat display (Fahrenheit or Celsius). Thermostats
L3511C and L3522C also include a DIP switch used to se-
lect fan operation for either electric heat or gas heat ap-
plications.
Thermostat L3532H includes a DIP switch used to indicate
whether electric or gas back−up heat will be used. Also,
SSR (Smart Setback Recovery) can be enabled or dis-
abled. When enabled, this feature provides additional
comfort when changing from one program period to the
next. If SSR is disabled, the HVAC equipment will respond
to a program change at the time the change is set to occur.
However, if SSR is enabled, the HVAC equipment will re-
spond to a program change before the change is set to oc-
cur. Refer to table 4 for DIP switch function descriptions.
Table 4. DIP Switch Function Description
Designation
1− Cal 1
(Wired)
2− Cal 2
3− Cal +/−
4− F/C
5− Fan
Option
(L3511C or
L3522C only)
5− Backup
Heat
(L3532H
only)
6− SSR
(Wired)
Thermostat Calibration
Cal 1, Cal 2, Cal± DIP switches may be used to offset or
recalibrate the room temperature display. Table 5 provides
DIP switch settings and corresponding temperature offset
values.
Page 3
Description Off
Room Tempera- 0°F
ture Offset: 1°F
Room Tempera- 0°F
ture Offset: 2°F
Room Tempera- Posi-
ture Offset: Sign tive
Select Fahren- F
heit or Celsius
Display
Select Heating G
Fan Operation:
Electric (E) or
Gas (G)
Select Heat Aux
Backup:
Electric (Aux) or
Gas (Dual)
Enable or Dis- Dis-
able Smooth Set- able
back Recovery
L3511C 5/2 DAY PROGRAMMABLE THERMOSTAT
Factory
On Setting
1°F 0°F
2°F 0°F
Nega- Positive
tive
C F
E G
Dual Aux
En- Disable
able