Option 15—Enable AUTO mode
Option 16—Enable Comfort Heat mode
Option 18—Humidity offset adjustment
Option 19—Outdoor air temperature offset adjustment
Option 20—Enable programmable fan
Option 30—Display damper positions
Option 31—Display HPT temperature reading
Option 32—Display LAT temperature reading
Option 33—Select LAT shutdown temperature
Option 34—User Interface address
Option 35—Disable zoning
Option 36—Select HPT or LAT sensor to monitor cooling
Option 37—Ignore LAT/HPT safeties
Option 38—Select auto changeover time
(1,9,10,17,21-29 are not applicable)
NOTE:
If END button is pressed or if no button is pressed for 3
minutes, Comfort Zone II -B will exit configuration mode and
return to normal operation. To re-enter configuration mode, FAN
button must be pressed and held for 10 sec again.
While in configuration mode, the large display shows the selection
which has been made and the smaller display (COOL set point
display) shows current option number. One of these will be
flashing.
The up and down buttons are used both to move between available
options and to make selection for each option. When option
number (small display) is flashing, the up and down buttons adjust
it, moving between available option numbers. After desired option
number has been selected, press SET TIME/TEMP button. The
large display will now flash, indicating that the up and down
buttons now control available choices within that option. Each
press of the SET TIME/TEMP button switches between available
option (small display) and available selections within each option
(large display).
Available options and available selections for each are described
below.
OPTION 2—CLEAN FILTER TIMER
Select hours of blower operation (heating, cooling, or fan) before
CLEAN FILTER icon is displayed. With OFF selected, icon will
never come on, disabling this feature. Time selection can be from
400 to 3600 hours by selecting numbers 1 through 9. (Time is
400X number selected.) Factory default is 2 (800 hours). Recom-
mended selections are: disposable filter—400 to 800 hours, media
filter—1200 to 1600 hours, or electronic air cleaner—1600 to 2400
hours of blower operation.
AVAILABLE SELECTIONS:
Use UP and DOWN buttons to alternate between OF (off) and 1 to
9 in steps of 1.
OPTION 3—FAHRENHEIT OR CELSIUS
Select between Fahrenheit or Celsius operation. Factory default is
Fahrenheit.
AVAILABLE SELECTIONS:
Use UP or DOWN buttons to alternate between F or C.
OPTION 4—FAN (G) ON WITH W
This selection determines whether the G (fan) output is to be ON
or OFF when any W (furnace or strip heat) output is ON. Most
furnaces and fan coils manage their own blowers and do not
require a separate G signal. For these applications, select OFF.
Some auxiliary heaters require a separate G signal to turn on the
blower. In this case, select ON. Factory default is OFF.
AVAILABLE SELECTIONS:
Use UP or DOWN buttons to alternate between OF (off) and ON.
OPTION 5—VARIABLE SPEED (ICM) BLOWER
If the furnace or fan coil contains a variable speed ICM blower, set
this option ON. For normal (PSC) blowers, set to OF (off). This
selection enables the system to use Comfort Heat features avail-
able only with the ICM blower. Factory default is OF (off).
AVAILABLE SELECTIONS: Use UP or DOWN buttons to
alternate between OF (off) and ON.
OPTION 6—COOLING LOCKOUT TEMPERATURE
This option allows selection of the outdoor temperature below
which cooling is not allowed. DIP switch 7 still enables or disables
this function, but this option allows setting its temperature. If DIP
switch 7 is ON (cooling is enabled at all outdoor temperatures),
Option 6 will display OF and cannot be changed. If DIP switch 7
is OFF (cooling can be disabled below a selected temperature),
Option 6 will allow the selection of 45, 50 or 55 degrees F. For all
residential equipment, select 55 degrees. For light commercial
equipment, select minimum outdoor cooling temperature from
equipment instructions. Factory default is 55.
AVAILABLE SELECTIONS:
Use the UP and DOWN buttons to move between 45, 50 and 55.
OPTION 7—VARIABLE SPEED SUPER DEHUMIDIFICA-
TION
This function only operates with selected Comfort Heat compat-
ible furnaces and fan coils. Refer to furnace or fan coil instruc-
tions. Option 5 must be set to ON for this option to appear. When
there is a ’cool to dehumidify’ demand (a dehumidification demand
but no cooling demand), the blower CFM is reduced to a minimum
to obtain maximum dehumidification. While a ’cool to dehumidify’
demand exists, the equipment is cycled ON for 10 min. and then
OFF for 10 min. The reduced blower CFM is produced by a Y
signal without a G signal. ON enables this function. Factory
default is OF.
AVAILABLE SELECTIONS:
Use UP or DOWN buttons to alternate between OF (off) and ON.
OPTION 8—AUXILIARY HEAT LOCKOUT TEMPERATURE
SELECTION
This option is available only with heat pump and dual fuel systems.
In heat pump systems, auxiliary heat is prevented from coming on
while outdoor temperature is above the selected value. In dual fuel
systems, the furnace is prevented from operating while outdoor
temperature is above the selected value. This temperature must be
set higher or equal to that of option 11. (See option 11 below.)
Outdoor temperatures of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, or
55°F or OF (off) may be selected. If OF (off) is selected, outdoor
temperature does not affect system operation. Factory default is
OF (off).
AVAILABLE SELECTIONS:
Use UP and DOWN buttons to move between 5 and 55 or OF (off)
in steps of 5.
OPTION 11—DUAL FUEL CROSSOVER TEMPERATURE
SELECTION
This option is only available with dual fuel systems. While outdoor
temperature is below the selected value, only the furnace is used
for heating. This option must be set lower than or equal to that of
option 8. (See option 8 above.) If the temperature selections of
option 8 and 11 are set to the same value, a dual fuel system will
use the heat pump only above this temperature and the furnace
only below this temperature. If the selections are different, the
range between the 2 selections will use the heat pump as the first
stage and the furnace as the second stage. Once the furnace comes
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