Comfort Stat CDT901 - Manual (Page 19)

CDT900 Series Touchscreen Programmable Thermostata
WIRING (FIG. 9 - 21)
All wiring must comply with local electrical codes and ordinances.
1.Select set of terminal identifications (Table 1) that corresponds with system type
(conventional or heat pump in Fig. 7).
2.Loosen the screws for the appropriate system type selected; see Table 1. See Table 2 for
terminal designation descriptions. Insert wires in the terminal block under the loosened
screw. See Fig. 8.
3.Securely tighten each screw.
4.Push excess wire back into the hole.
5.Plug the hole with nonflammable insulation to prevent drafts from affecting the thermostat.
6.See Fig. 9 through 21 for typical wiring hookups.
Fig. 7. Selecting terminal identifications for
system type.
18
CONVENTIONAL
HEAT PUMP
SCREW
TERMINALS
S1 S2 C R RC E L Y2 Y G
S1 S2 C R RC W W2 Y2 Y G
O/B AUX