Complete The Install; Front Panel Items - Lux Products TX500U Installation And Operating Instructions Manual

SWITCH #8 (BATTERY MONITOR): [OFF/DOWN = ON, default] This setting,
regularly monitors the battery level, and shows "LOW BAT" on the screen if
the batteries need to be replaced. Use this setting at all times when
batteries are present in the thermostat. [ON/UP = OFF] This setting only
applies if you are NOT physically using batteries in the thermostat, and are
powering the thermostat entirely from the system ("C" wire terminal).
GAS / ELEC SLIDE SWITCH (FAN OPERATION):
This switch is a physical component by itself on
the circuit board, and is much larger than the
DIP switches listed above. [DOWN = GAS,
default] This setting lets the heating system
control the blower fan automatically by itself.
Systems that would typically use the "GAS"
setting would be: natural gas, propane, or oil
furnaces. This setting has no effect upon Cool
mode operation. [UP = ELEC/HP] This setting
runs the system's blower fan when heat is called for, and is required for
heating systems that do not control their own fan while the thermostat is in
HEAT mode. Heat pump systems, and units with an electric heating element
typically require this setting.

COMPLETE THE INSTALL:

Once the hardware options are set, install two new Energizer
"AA" size alkaline batteries. Ensure that the batteries are installed in the
proper direction as per the markings shown in the battery tray. If the
batteries were already installed before changing the hardware setup options,
change the position of the HEAT/OFF/COOL System Mode switch to accept
the new hardware option switch settings.

FRONT PANEL ITEMS:

These items below are all located behind the door on the front of the
thermostat. To open the door, pull outwards using the small indentation in
the center of the top edge of the thermostat housing.
HEAT / OFF / COOL, SYSTEM MODE SWITCH: Set this switch to HEAT to
control your heating system, and COOL to control your cooling system. The
OFF position will disable both the heating and cooling units.
18
BATTERY
ELEC
GAS
® or DURACELL ®