Options Screen Installer Settings - Lennox ComfortSense L7742U Programming Manual

the fan to come on more or less frequently. The default is
35%; to change, scroll to FAN CIRCULATE; press EN-
TER. Use arrows to change to 15, 25, or 45%; press
SAVE.
FAN CIRCULATE
DEFAULT(35%) 25%
15% (9 minutes fan run time per hour)
25% (15 minutes fan run time per hour)
35% (21 minutes fan run time per hour)
45% (27 minutes fan run time per hour).
COOLING LIMIT default is 45º; to change to any degree
between 45ºF and 99ºF, scroll to COOLING LIMIT; press
ENTER. Use arrows to change to desired temperature;
press SAVE.
COOLING LIMIT
DEFAULT(45°F) 55°F
HEATING LIMIT default is 90º; to change to any degree
between 45ºF and 90ºF, scroll to HEATING LIMIT; press
ENTER. Use arrows to change to desired temperature;
press SAVE.
HEATING LIMIT
DEFAULT(9O°F) 85°F
SECURITY LOCK default − no locks at all − this provides
two methods of locking the thermostat − NO prevents oth-
ers from making any changes at all or YES prevents others
from making changes other than temperature setpoints.
Scroll to SECURITY LOCK and press ENTER; ALLOW
TEMP ADJUST screen appears; press box below YES or
NO. The ENTER LOCK CODE screen appears.
ALLOW TEMP ADJUST
YES NO
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NOTE − If the user settings security code is forgotten or
misplaced for some reason, the universal code 864" may
be used to unlock.
To enter lock code, press box below each small up-arrow
to select each column. Use up/down arrows to enter a
number, then press the box below the next number and re-
peat to enter a 3-digit lock code; write down the number for
future reference; press SAVE.
HUMIDITY SETTING See separate sections − Humidify
(Page 10) and Dehumidify (Page 11).
BACKLIGHT SETTING default is POWER SAVE; scroll
to BACKLIGHT SETTING; press ENTER. Use arrows to
change to CONTINUOUS; press SAVE.
BACKLIGHT SETTING
DEF(SAVE) POWER SAVE
BACKLIGHT INTENSITY default is 100%; scroll to
BACKLIGHT INTENSITY; press ENTER. Use arrows to
change to 20 to 100% in 20% increments; press SAVE.
BACKLIGHT INTENSITY
DEFAULT(1OO%) 8O%
506180−01 09/08
ENTER LOCK CODE
O O O
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Options screen Installer Settings

Installer Settings
[
OPTIONS TAB > INSTALLER SETTINGS > [ENTER] [ENTER]
Press OPTIONS tab, then use the arrows to select IN-
STALLER SETTINGS. Press ENTER twice.
INSTALLER SETTINGS
−−−−−−−−−−−−−−−−−−−−
NOTE − After the first Enter", a note states MUST BE SET
BY QUALIFIED PERSON". Press Enter again to access
installer settings.
The following items are available for modifying. Follow the
instructions for each parameter.
SYSTEM SETUP Sets the thermostat for operation with
a heat pump or non-heat pump and defines the number of
compressor stages and the number of backup heat stages.
The default settings for the system are Non−heat Pump,
Gas/Oil, 2 compressor stages, 2 indoor heat stages.
Use arrows to select from the list; then press ENTER.
SYSTEM SETUP
NON HEAT PUMP
HEAT PUMP
COMPRESSOR STAGES
INDOOR HEAT STAGES
For NON HEAT PUMP, use arrows to select backup heat:
NO HEAT, GAS/OIL, or ELECTRIC; then press SAVE.
NON HEAT PUMP
NO HEAT
GAS/OIL
ELECTRIC
For HEAT PUMP, use arrows to select backup heat: NO
BACKUP HEAT, DUAL FUEL (GAS/OIL), or ELECTRIC;
then press SAVE.
HEAT PUMP
NO BACKUP HEAT
DUAL FUEL (GAS/OIL)
ELECTRIC
For COMPRESSOR STAGES, use arrows to select either
1 or 2 compressor stages; then press SAVE.
COMPRESSOR STAGES
For INDOOR HEAT STAGES, use arrows to select 1 or 2
indoor heat stages; then press SAVE.
INDOOR HEAT STAGES
OUTDOOR SENSOR default NO. Balance points, Hu-
miditrol, Dew Point Control require an outdoor sensor. This
control sets the thermostat to test for and report outdoor
temperature. Scroll to OUTDOOR SENSOR and press
ENTER; use arrows to select YES; press SAVE.
OUTDOOR SENSOR
DEFAULT(NO)
NOTE − If outdoor sensor is not present and if user tries to
select the options DISPLAY INFO −> OUTDOOR TEMP,
LOW BALANCE POINT, HIGH BALANCE POINT, DEW
POINT CONTROL, HUMIDITROL a message is displayed
OUTDOOR SENSOR REQUIRED" instead of scroll op-
tions for these menus. Information about installing the sen-
sor is described on Page 16.
Page 8
2
2
YES
]