2
Table1 – Model Selectionand Wiring Diagram Chart
OUTDOOR UNIT AIR CONDITIONER
1 Speed
HEATPUMP
1 Speed
1---StageFurnace Model AC See Fig. ---
2---StageFurnace Model AC See Fig. ModelHP See Fig . ---
Typi cal Fan C oil Model AC See Fig. ModelHP See Fig . Model HP See Fig.
Va r i a b l e --- S p e e d Fa n Co i l (F K 4 D ,
FV4, 40FK) Model AC See Fig. Model HP See Fig. Model HP See Fig.
Install Thermostat
ELECTRICALOPERATION HAZARD
Failure to followthis warning could result in personal injury
ordeath.
Before installing, modifying , or servicing system, main
electricaldisconnectswitch must be in theOFF position. There
may be more than 1 disconnect switch. Lock out and tag
switch with a suitable warning label.
!WARNING
1. Turn OFF all powerto unit.
2. If an existing thermo statis bein g replaced:
a. Remove ex isting thermostat from wall.
b. Disconnect wiresfrom existing thermostat,1 at a time.
Be careful not to allow wires to fall back into the wall.
c. As each wire is di sconnected, record wire color and
terminal marking.
d. Discard or recycle old thermo stat.
NOTE: Mercury is a hazardous waste and MUST be disposed of
properly.
3. Open thermostat (mounting base) to expose mounting
holes.The base can be removedto simplify mounting.Snap
apart carefully to separate mounting base from remaind ero f
thermostat.
NOTE: If thermostat willnot separate, insert a smallscrewdriver
into top slots for ease of openin g.
4. Route thermostat wires through large hole in mounting
base. Level mounting base ag ainst wall (for aesthetic value
only --thermostat neednot be leveledfor proper operation)
and markwall through 2 mounting holes.
5. Drill two 3/16 ” (5mm) mounting holes in wall where
marked.
6. Secure mountingbase to wall with 2 anchors andscrews
provided,(additional anchoring holesavailable for more se-
cure mounting if needed ) making sure all wires extend
through holein mounting base.
7. Adjust length and rou ting of each wire to reach proper ter-
minal and connector block on mounting base with 1/4”
(6mm) of extra wire. Strip only 1 /4” (6mm) of insulation
from each wire to prevent adjacent wires from sh orting
together when connected .
8. Match and connectequipment wires to properterminals of
theconnector blocks. (See Table1.)
ELECTRICAL OPERATIONHAZARD
Failure to follow this caution may result in equipm ent damage
or improperoperation.
Improper wiring or installation m ay damage the thermostat
Check to make sure wiring is correct before proceeding with
installation or turning on unit.
CAUTION!
9. Push any excess wire into wall and again st mounting base.
Seal hole in wall to prevent air leaks. Leaks can affect
operation.
10. Snap case back to gether.
11. Close thermostat assembly making sure pins on back of
circuit board align with sockets in connector.
12. Turn ON power to unit.
NOTE: If a common wire has not been connected , two AA
batteriesmust be used to power the thermostat.
Make sure the customeris informed about changing the batteries
every 12 months, if a common wire is not available.
If a common wire is connected, th en batteries are not needed for
any reason. Batteries may be installed if desired but the thermostat
willnot draw power from them.
Set Thermostat Configuration
Configurationoptions areintended to be selectedat installationand
are normallynot modified by the home owner. These options are
not discussed in the Homeowner’s Guide and therefore must be
made as part ofthe installation. A specialprocedure allows entry
into the configuration mo de. The thermostat will automatically exit
this mode if no button is pressed for 3 minutes. While in the
configurationmode, up to 14 option choicescan be made:
Option 01: Anticipator settin g
Option 02: Clean filter setting
Option 03: Fahrenheit o r Celsius selection
Option04: Enable fan (G) on with W output
Option 05: HP / AC
Option07: Enablezoning
Option 10: O (reversingvalve) ON with Heat or Cool (presenton
HeatPump models only)
Option13: Room temperatureoffsetadjustment
Option15: EnableAUTO mode
Option 18: BacklightConfiguration
Option19: Equipment Present
Option21: Keypad Lockout
An explanation for each of these and how to enter the
configurationmode follows.