White Rodgers NP100 Installation Instructions & User Manual page 6

2.2 Label and disconnect the wires (cont.)
2.2.2 Label each wire that comes out of the wall and attaches to
terminals on the old thermostat. Use labels provided with your
new thermostat.
1. Note the letter printed near each wired terminal
2. For each out-of-the-wall wire:
– fi nd its terminal letter(s) in the left column of the table
on page 9,
– label the wire according to the right column of the table.
3. Make the following notes in the right column of the table
on page 9:
wall
C
wall
RC
wall
RH
Examples
You'll need this information further in the installation process!
Note: No thermostat installation uses all of the wires shown
on page 9. In most cases, between 4 and 5 terminals are wired.
Mislabeling the wires could result in damage to your
heating and cooling unit.
™
Contact White-Rodgers Customer Service at 1-877-654-9394 if your
old thermostat contains any wired terminals not listed in the table.
– Circle all your out-of-the-wall
labeled wires
– Pencil in any jumper wire
connecting 2 terminals
8
If the OLD thermostat's
terminal is wired into the wall
and identifi ed by this letter...
G
wall
RC, R
wall
RH, 5, R5
wall
W, 4, W1
wall
Y, Y1
wall
X, C
wall
O
wall
If terminal "O" is NOT wired.
B
wall
If terminal "O" is wired.
2.2.3 After labeling all the wires, use a screwdriver to disconnect
each wire from its terminal. Remove the old thermostat.
Make sure that the wires don't fall
into the wall after you detach them from
the old thermostat. You may choose to
tape them to the wall or tightly wind them
around a pencil or screwdriver.
...Then label its wire with
this letter:
wall
G
wall
RC
wall
RH
wall
W
wall
Y
wall
C
wall
O
wall
B
wall
C
9