The Fast Cool feature operates the cooling stages in the
same manner as Fast Heat, On or Off when the tempera-
ture is lowered below the room setting .
28 .
Select Remote Temperature Sensor Enabled
– ON
enables a remote sensor connected to thermostat and
displays the sensor temperature in the clock digits . OFF
(default) indicates no remote sensor connected or en-
abled .
29 .
Selects Remote Sensor as Indoor or Outdoor
– If 28
is enabled, select the remote to be
Remote In
(Indoor,
F145-1328) or
Outdoor Remote
(Outdoor, F145-1378) .
Default is
Remote In
.
30 .
Select Local Sensor Disable
– If 29 is selected Indoor,
the thermostat Local Sensor can be disabled so the
displayed temperature will be from the Remote Sensor .
Default is
On LS
. To disable the Local Sensor, change
selection to
OFF LS
.
31 .
Select Dual Fuel Feature (dF)
– This feature is appli-
cable only in heat pump modes (HP1, HP2) . Enables (On)
or disables (Off) dual fuel feature of thermostat .
32 .
Select Dual Fuel Temperature
– With dF selected On
and outdoor remote sensor available, select the outdoor
temperature the thermostat will use to determine when to
switch to gas heat and shut down the compressor . When
the outdoor temperature falls below the selected tem-
perature the gas heat will begin . Default is 35°, but can be
set in the range of -5 to 50° . A lower setting will delay the
start of gas heat allowing cooler temperature in the home .
33 .
Select Dual Fuel Setting
– With
DF
selected On and no
outdoor sensor, select the dF setting from 01-09 . Fac-
tory default is 05 . The dF setting influences when second
stage comes on . The factory default creates a separation
of approximately 1
o
F between stages . Increasing the set-
ting decreases the separation between stages . Decreas-
ing the value increases stage separation . This adjust-
ment allows a small change in the operation of your heat
pump system versus your auxiliary system relative to the
thermostat adjustment . The higher the number the sooner
the auxiliary stage energizes for better comfort . The lower
the number the longer period of time before auxiliary is
energized for more economy .
Note:
This setting is not minutes or degrees . It is numeric
setting that will influence the internal thermostat calcula-
tion for staging .
34 .
Select Compressor Delay (Cd)
– Applicable only in
heat pump modes (HP1, HP2) . After the auxiliary heat is
turned on, the compressor(s) shut down is delayed for the
time selected (in seconds) . This delay is factory set to 60,
but can be set in the range of 0 to 99 .
35 .
Select Auxiliary Off (AO)
– Applicable only In heat pump
modes (HP1, HP2) with outdoor sensor available . Select
the temperature that will inhibit the auxiliary heating
stage . As long as the outdoor temperature is above the
selected temperature, the auxiliary heat will not turn on .
The default setting is 60°, but can be set in the range of
-5 ° to 79° .
INSTALLER/CONFIGURATION MENU
If indoor temperature drops below 45° because of a pos-
sible heat pump malfunction, the thermostat will turn off
the pump and switch to Auxiliary heat . "Call for Service"
will display on screen .
There are two ways the thermostat will return to normal
heat pump operation:
•
Press any key to retry the pump and erase the "Call
for Service" icon .
•
When setpoint is achieved on Auxiliary, system will
return to heat pump operation on next call for heat .
36 .
Select Pre-Occupancy Purge (PP)
– A selection of -O-
opens the damper at the Day (occupied) program period .
A selection of 1, 2 or 3 opens the damper early, 1, 2 or 3
hours before the Day (occupied) time in the program . This
allows 1, 2 or 3 hours of fresh air circulation before people
arrive .
37 .
Select Economizer or Damper Operation
– This option
configures the thermostat A1 terminal for Commercial
Occupied Damper systems or Economizer systems . Com-
mercial Occupied Damper systems open a damper during
all Day (occupied) program time periods . Economizer
systems use the A1 terminal to open an economizer and
use outside air as the first cooling stage .
Select EC
"Off"
(Economizer Off) for Commercial Oc-
cupied Damper systems that require the A1 terminal to be
energized constantly during Day (occupied) program time
periods . With EC Off, the cooling terminals and stages
operate as follows: Y = Stage 1 cooling, Y2 = Stage 2 cool-
ing . A1 is energized constantly during Day (occupied) time
periods .
Select EC
"On"
(Economizer On) for Economizer systems
that use outside air for the first stage of cooling . With EC
On selected, the cooling terminals and stages operate
as follows: A1 = Stage 1 cooling, Y = Stage 2 cooling, Y2
= Stage 3 cooling . EC
"On"
also runs the first stage of
cooling (economizer) longer than a standard (compressor)
cooling stage because economizers are more efficient
with a longer run time .
41 & 42 .
Change UV Lamp
– This feature allows the thermo-
stat to display the words
"Change UV Lamp"
(Call for
Service of UV bulb) after a set time of UV bulb operation .
This is a reminder to maintain your UV system at opti-
mum level of operation . When enabled, the factory set
interval for
"Change UV Lamp"
to be displayed is 350
days of UV bulb operation and can be adjusted in 25 day
increments . This should be adjusted with respect to the
bulb’s recommended maintenance schedule .
When
"Change UV Lamp"
is displayed, you can clear it
by pressing Clean Display .
43 & 44 .
Select Change Filter Run Time
– This feature al-
lows thermostat to display
"Change Filter"
after a set
time of blower operation . This is a reminder to change
or clean your air filter . This time can be set from 25 to
1975 hours in 25 hour increments . A selection of OFF will
cancel this feature . When
"Change Filter"
is displayed,
you can clear it by pressing Clean Display . In a typical ap-
plication, 200 hours of run time is approximately 30 days .
8
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