Emerson 1F95-1277 Installation And Operating Instructions Manual page 8

out allows only the or
set temperature limits.
"Temperature Limit/Keypad Lockout" prevents chang-
ing the temperature limits in the Configuration Menu.
After the type of lockout is selected, press
Keypad Lockout Combination Number Selection
Display will read "000" "Keypad Lockout".
Skip this step and continue through the remainder of the
configuration menu if you require an Air Filter Change
out indicator or Humidifier Pad Change out indicator by
pressing the key to advance.
Return to this point when you are ready to start your
selected lock-out and continue by:
Pressing or keys to select your keypad lockout
combination number. Note: "000" is not a valid combina-
tion choice.
Record the number you select for future use.
Press to exit the menu. The security feature you select
will start in 10 seconds. The system key will remain active
for 10 seconds to allow setting Heat, Off, Cool or Auto.
To unlock the keypad, press Menu, then press Installer
Config. Display will show "000" and keypad lock. Enter
the code used to lock the keypad and press
28 & 29. Select Fast Second Stage, ON or OFF – Not
available if configured for SS1. Selecting FA ON forces
additional heat stages to come on quickly when
used to raise the temperature a few degrees above the
room. Select this setting if you want the heat to increase
quickly when you manually raise the temperature.
Selecting FA OFF allows the thermostat to calculate an
optimal time to bring on additional stages of heat. When
the is used to raise the setting above the room tem-
perature additional heat stages may come on very quickly
or very slowly (up to 30 minutes later) depending on
recent system performance. Select this setting if you do
not require the additional heat stages to come on quickly
when you manually raise the setting and want to allow the
thermostat to stage based on recent system performance.
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.
30. Select Remote Temperature Sensor Enabled – ON
enables a remote sensor connected to thermostat and dis-
plays the sensor temperature in the clock digits. OFF (de-
fault) indicates no remote sensor connected or enabled.
31. Select Remote Sensor as Indoor or Outdoor – If 30
is enabled, select the remote to be Remote In (Indoor,
F145-1328) or Outdoor Remote (Outdoor, F145-1378).
Default is Remote In.
32. Select Local Sensor Disable – If 31 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.
33. 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.
34. 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.
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keys to operate within your
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INSTALLER/CONFIGURATION MENU
35. 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°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 set-
ting that will influence the internal thermostat calculation
for staging.
36. Select Compressor Delay (Cd) – 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.
37. Select Auxiliary Off (AO) – Applicable with HP1 or HP2
selected with outdoor sensor. 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
80°(disabled), but can be set in the range of -5 ° to 79°.
Thermostat will not allow a setting at or below the (dF)
dual fuel setting.
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.
38 & 39. 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.
40 & 41. Select Change Filter Run Time – This feature
allows 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.