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thermostat connects to help determine this. If the original system had an orange wire
connected to an "O" terminal, then you have a "changeover with cool" system. If you have
a brown wire connected to the "B" terminal, then you have a "change over with heat"
system.
Installer Settings Menu items
Display Lock
Y = Display LOCKED
N = Display unlocked
Allows you to lock or unlock the thermostat buttons. When the buttons are locked, you can
still access the main menu, but you will not be allowed to select any menu options. The
Installer Settings hidden button operation is always operational, allowing you to return to
this screen and turn Display Lock off.
Service Mode
Test Mode
Y= Test mode on. Reduces all delays to 10 sec for quicker system testing
N= Test mode off. Normal system delays
CAUTION: in test mode all system safety delays are shorten. Do not operate the
system compressor in test mode. Disconnect Y1 or Y2 outputs if using test mode
on a live system.
System Settings Submenu: Sets the HVAC operational settings below
Mechanical Settings Submenu: Sets HVAC system type and configuration
Type
Selects HVAC type, Gas/Electric or Heat pump
Fan Type
Selects the Fan type if system is Gas or Electric
C/O Type
Selects the Heat Pump Changeover Valve type
nd
2
Stage Heat
nd
Enables the 2
Stage Heat operation
Aux Heat (HP)
Enables the Auxiliary Heat operation. Typically the Aux Heat will be heat-strips in a Heat
Pump system
nd
2
Stage Cool
nd
Enables the 2
Stage Cool operation
Schedule Enable Range: Y or N
When enabled, the local thermostats scheduler function is enabled.
Recovery enable
For Heat Pump Systems. Intelligent setback recovery is an automatic advance start of
heating to allow the system to be at setpoint by the schedule time, without the use of Aux
heating.
DCN: 140-01773-01
Range: Y or N
Range: Y or N
Range: Gas/Elec or Heat pump
Range: Gas or Elec
Range: w/Cool or w/Heat
Range: Y or N
Range: Y or N
Range: Y or N
Range: Y or N
Default: N
Default: N
Default: Gas/Elec
Default: Gas
Default: w/Cool
Default: N
Default: Y
Default: N
Default: N
Default: N
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