LUX 105/2110 Series Installation And Operating Instructions

105/2110 Series
HEAT PUMP DIGITAL
MECHANICAL THER

IMPORTANT!

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 o f
damaging the thermostat and the systems it
controls.
These instructions may contain information beyond that reciJired for your particular
Please save for future reference.
application.

FEATURES

• The thermostat can be used wi t h most Two Stage Heat, One Stage Cool He21 Pump Systems.
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 t i mes.
• Indicators i n 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 ei t her the Temperature Up or Down key will reveal the e11rrent Se! Temperature.
A 4-minute minimum off time in COOL prevents your air condi t ioning system from being damaged.
Two "AA' batteries are required.
C A U T I
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Please read all Instructions carefully before
beginning installation.
TOOLS REQUIRED
#1 PhiUips screwdriver (small)
Dlil wi t h 3/16-in. (4.8mm) M

THERMOSTAT LOCATION

On replacement installati o ns, 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
ft. (1.Sm) above the floor, and in a room that is
used often.
2. Do not install it where there are unusual heating 5. Do not locate �here air circul a tion is poor, such
conditions, such as: in direct sunlight; near a
lamp, radio, television, radiator, register, or
fireplace; near hot water pipes in a wall; near a
stove on the other side of a wall.
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 simp l y
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

1. Strip insulation 3/8 in. (9.5mm) from wire ends and clean.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
you mounting the base to solt
ff Br9 8 material fik!I
{iasterl you using the old mounting holes,
or if n
the may not hold.
hae at
3116-in. (4.8mm)
SC11MS Ori a
each /ocalion, and the plastic anchors
SCl8W insert
provided. Then mount the base
as desctfbe 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.
a draft from a stairwell, door, or window.
4. Do not locate n a damp area. This can lead to
corrosion that �· t ill shorten thermostat life.
as: in a cornei or an alcove; or behind an open
door.
6. Do not install che unit until all construction work
and painting � . as been completed.
CAUTION
Read instroclio careMy
belote removing wiling
IJll'f
existing lhemlost
from
Kil9s must be labeled
they remo"'9d
befote
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fhetl8mlllvn /goole the
cc/tJt dlhe wns since
/he$e
may not comp/'/ with the
standatd.
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