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6
b. Disconnect wires from existing thermostat, one at a time. Be careful not
to allow wires to fall back into the wall.
c. As each wire is disconnected, record wire color and terminal marking.
d. Discard or recycle old thermostat.
ENVIRONMENTAL HAZARD
Failure to f ollow this caution may result in environmental damage.
Mercury is a hazardous waste. Federal regulations require that
Mercury be disposed of properly.
CAUTION
!
3. Open thermostat (mounting base) to expose mounting holes. The base can
be removed to simplify mounting. Press the thumb release at the top of the
thermostat and snap apart carefully to separate mounting base from re-
mainder of thermostat.
4. Route thermost a t wir es through large hole in mount i ng base. Level mounti ng
base against wall (for aes t het i c val ue only— t her mostat need not be level for
proper operation) and mark wall through four mounti ng holes. To avoid unin-
tended bending of wall plate plast ic, al l f our scr ew s and anchors must be us ed.
See Fig. 1.