105/2110 Series
HEAT PUMP DIGITAL
MECHANICAL THERrOSTAT
43318
REVC
IMPORTANT!
r
I
•
Thank you for your
confidence in our product.
To obtain the best results
from your investment,
please read these
instructions and acquaint yourself with your
purchase before installing your new
thermostat. Then follow the installation
procedures, one step at a time. This will save
you time and minimize the chance of
damaging the thermostat and the systems it
controls.
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These instructions may contain information beyond that reciJired for your particular
application.
Please save for future reference.
FEATURES
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• The thermostat can be used with most Two Stage Heat, One Stage Cool He21 Pump Systems.
It
cannot be used
with 120 volt heating systems. Ask your dealer for other LUX thermostats to< ontrol those systems.
• A large easy to read display shows you the e11rrent room temperature at all times.
• Indicators in the display show current system status.
• The thermostat has a built in digital cootrol system to accurately control the tomperature in your home.
• The thermostat will leam the temperature characteristics of your home on a cialy basis and customize the control to
give you the best comfort possible from a digital thermostat.
• You can also select a tighter temperature control if comfort is preferred over E!l1ergy savings.
A press of either the Temperature Up or Down key will reveal the e11rrent Se! Temperature.
A 4-minute minimum off time in COOL prevents your air conditioning system from being damaged.
Two "AA' batteries are required.
C A U T I
O
N
sys19m. This
•
Yourlhetmostat
is
a precision instrument.
Please
)()IR"
wananty.
hande l v.ilh
aw.
•
Al wiring
must�
to
local cooos
and
• Tr.m off elecbicly to
the appliance
before installing
oo:fnances.
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·
Please read all Instructions carefully before
beginning installation.
TOOLS
REQUIRED
#1 PhiUips screwdriver (small)
Dlil
with 3/16-in. (4.8mm) M
THERMOSTAT LOCATION
On replacement installations, mount the new
thermostat in place of the old one unless the
conditions listed below suggest otherwise. On new installations, follow th� guictelines_listed below.
1. Locate the thermostat on an inside wall, about 5
a draft from a stairwell, door, or window.
ft. (1.Sm) above the floor, and in a room that is 4. Do not locate n a damp area. This can lead to
used often.
corrosion that �·till shorten thermostat life.
2. Do not install it where there are unusual heating 5. Do not locate �here air circulation is poor, such
conditions, such as: in direct sunlight; near a
as: in a cornei or an alcove; or behind an open
lamp, radio, television, radiator, register, or
door.
fireplace; near hot water pipes in a wall; near a 6. Do not install che unit until all construction work
stove on the other side of a wall.
and painting �.as been completed.
3. Do not locate in unusual cooling conditions, such 7. This thermostJt does not require leveling.
as: on a wall separating an unheated room; or in
REMOVING THE OLD THERMOSTAT
$Witch electrici1y to the furnace and air conditioner OFF; then proceed with the
following steps.
1. Remove cover from old thermostat. Most are snap-on types and simply
pull off. Some have locking screws on the side. These must be loosEned.
2. Note the letters printed near the terminals. Attach labels (enclosed) to
each wire for identification. Remove and label wires one at a time. Make
sure the wires do not fall back inside the wall.
3. Loosen all screws on the old thermostat and remove ii from the wall.
MOUNTING THE UNIT ON THE WALL
CAUTION
Read instroclions careMy
belote removing
IJll'f
wiling
from
existing lhemlostal.
Kil9s must be labeled
befote
they
1118
remo"'9d.
lt7al,emomgwnsfrom
fhetl8mlllvn, /goole the
cc/tJt dlhe wns since
/he$e
may not comp/'/ with the
standatd.
1. Strip insulation 3/8 in. (9.5mm) from wire ends and clea
n
.
off any corrosion.
2. Fill wall opening with non-combustible insulation to prevent drafts from affecting the
thermostat
3. Press in on the button on the right of the thermostat and swing the body away from
the base and left to remove the body from the base.
N OT E
ff
you
Br9
mounting the base
to
8
solt
material fik!I
{iasterl>oetd
or
if
you
n
using the old mounting holes,
the
SC11MS
may not hold.
Ori a
3116-in. (4.8mm)
hae
at
each
SCl8W
/ocalion, and
insert
the plastic anchors
provided. Then mount the base
as desctfbed
below.
ATIACHING WIRES
4. Hold the base against the wall, with the wires
coming through the hole provided. Route the
wires to below the terminal block. Position the
base for best appearance (to hide any mar1<s from
an old thermostat). An optional wall plate is
available. Attach the base to the wall with the two
screws provided.
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