INSTALLATION
!WARNING
Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code.
Remove Old Thermostat
Before removing wires from old thermostat, mark wires for terminal identifi cation so the proper connections will be made to the new thermostat.
Installing New Thermostat
1.Pull the thermostat body off the thermostat base. Forcing or prying on the thermostat will cause damage to the unit.
2.Place base over hole in wall and mark mounting hole locations on wall using base as a template.
3.Move base out of the way. Drill mounting holes. If you are using existing mounting holes and the holes drilled are too large and do not allow you to tighten base snug- ly, use plastic screw anchors to secure the base.
4.Fasten base snugly to wall using mounting holes shown in Figure 1 and two mounting screws. Leveling is for appearance only and will not affect thermostat operation.
5.Connect wires to terminal block on base using appropriate wiring schematic.
6.Push excess wire into wall and plug hole with a fi re re- sistant material (such as fi berglass insulation) to prevent drafts from affecting thermostat operation.
7.Carefully line the thermostat up with the base and snap into place.
Battery Location
2 "AA" alkaline batteries are included in the thermostat at the factory with a battery tag to prevent power drainage. Remove the battery tag to engage the batteries.
To replace batteries, set system to OFF, remove thermostat from wall and install the batteries in the rear along the top of the thermostat (see Figure 1). For best results, use a premi- um brand "AA" alkaline battery such as Duracell® or Ener- gizer®. If the home is going to be unoccupied for an extended
period (over 3 months) and 
is displayed, the batteries should be replaced before leaving.
Power Stealing Switch
This thermostat is designed for 24 VAC power to be hard- wired via a common connection to the C terminal with battery
The Power Stealing switches are defaulted to the ON position. If the thermostat is hardwired with "C" common connection, both switches should be moved to the OFF position. If the thermostat is battery powered and the heating or cooling sys- tem does not cycle, indicating the system is not compatible, the switch for the circuit, heating or cooling, experiencing the incompatibility should be moved to the OFF position.
Figure 1 – Thermostat Base Multi-Stage 1F95-0680
Mounting | Mounting |
Hole | Hole |
Place Level | Place Level |
across Mounting Tabs | across Mounting Tabs |
(for appearance only) | (for appearance only) |
Rear view of thermostat | |
| 2 "AA" Batteries |
| Power Stealing |
| Switches |
WIRING CONNECTIONS
Refer to equipment manufacturers' instructions for specifi c system wiring information. After wiring, see CONFIGURA- TION section for proper thermostat confi guration.
Wiring diagrams shown are for typical systems and describe the thermostat terminal functions.
| TERMINAL DESIGNATION DESCRIPTIONS |
Terminal Designation | Description |
|
|
O/B | Changeover valve for heat pump energized constantly in cooling and off/heating |
Y2 | 2nd Stage Compressor |
Y | Compressor Relay |
G | Fan Relay |
RC | Power for Cooling |
RH | Power for Heating |
C | Common wire from secondary side of cooling (Optional). Required for fault indication, continuous back- |
| light operation or remote temperature sensor operation 6 Powered closed 3rd wire for |
W/E | Heat Relay/Emergency Heat Relay (Stage 1) (3rd Stage Heat in HP2) |
W2 | 2nd Stage Heat (4th Stage Heat in HP2) |
Common (DC) for wired remote temperature sensor | |
S | Frequency signal from remote temperature sensor |
+ | Power (DC) to remote temperature sensor |
A1 | Output energized in occupied (Morn, Day, and Eve periods) |
L | Compressor diagnostic indicator for systems with diagnostic connection typically found on Heat pump |
| systems or with Copeland's Comfort Alert |
|
|
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