Comfort Stat CP1717, Owner'S Manual, Page: 5 / 8

Figure 2
Ÿ Position wallplate on wall and pull existing wires through large opening. Then level for appearance. Mark holes for plastic anchors provided, if your existing holes do
not line up with those on the wallplate.
Ÿ
Drill holes with 3/16” bit and gently tap anchors into the holes until flush with wall.
Ÿ Reposition wallplate to wall, pulling wires through large opening. Insert mounting screws provided into wall anchor and tighten. See Figure 3.
Figure 3
NOTE: 5­ Wire Systems
If your thermostat has one wire marked R or Rh (2, 3, or 4­wire system), then leave the jumper wire between the Rh and Rc terminals on the wallplate. Otherwise, if
you have separate Rh and Rc wires (5­wire system), then remove the jumper wire between the Rh and Rc terminals.
Connect Wires and Mount Thermostat to wallplate
Ÿ
Match and connect the labeled wires to the appropriate coded terminal screws on the wallplate. (See Figure 4, 5.) Ignore any wires which may be present, but which
were note connected to the old thermostat.
Figure 4 Figure 5
Ÿ Refer to the Wiring Diagrams below to be sure your system is wired correctly.
Ÿ
If your system is a single stage heat pump and uses an O or B wire, you must move the System Selector switch inside the thermostat to the Heat Pump position. If
you have a normal furnace or electric system, leave the switch in the Standard position. Refer to the System Selector section on the back for more information on this
switch.
Ÿ Be sure to tighten the terminal screws securely, otherwise a loose wire could cause operational problems with your system or thermostat.
Ÿ
Push excess wire back into the hole to prevent interference when installing the thermostat to the wallplate.
Ÿ Make sure the System Switch is set to OFF, and the Fan Switch is set to AUTO.
R
Rh/O
G
Y
W
Rc
/B