White Rodgers NP110 Install Manual page 6

3.2 Remove the old thermostat cover
Remove the old thermostat's front cover from the wall base. Some covers pull off easily, while others may need to
be released by using a screwdriver.
Your old thermostat may have a sealed glass tube containing mercury. Be careful not to damage the tube or dispose of the tube in your trash. For safe
disposal information, please see Mercury Notice on page 27.
3.3 Label wires
Tip: Taking a picture with a camera or smartphone can help you not only remember how wires are connected
to the terminals, but can also ensure that you label your wires correctly. Mislabeling the wires may result in a
high energy bill or damage to your heating and cooling system.
Using your screwdriver, carefully unscrew one wire at a time from the terminal block and attach the corresponding
wire label sticker.
Please note that not all terminals may be used, and that there's no standard color code for thermostat wires, so your
wire colors may vary. For your reference, we've included a terminal label reference chart to help you connect the
wires in your old thermostat to your new thermostat in case you get stuck.
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CAUTION
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