3M Filtrete 3M-10 User manual

ENGLISH
Install Guide 3M-10

Location
Caution
Tools
To avoid electrical shock and to prevent damage to the furnace, air conditioner,
and thermostat, disconnect the power supply before beginning work.
This can be done at the circuit breaker, or at the appliance.
C A U T I O N
•Your thermostat is a precise instrument.
Please handle it with care.
•Turn off electricity to the appliance before installing or
servicing thermostat or any part of the system. Do not
turn electricity back on until work is completed.
•Do not short (jumper) across electric terminals at control
on furnace or air conditioner to test the system. This will
damage the thermostat and void your warranty.
• All wiring must conform to local codes and ordinances.
•This thermostat is designed for use with 24 volt AC and
millivolt systems. The thermostat should be limited to a
maximum of 1.0 amps; higher amperage may cause
damage to the thermostat.
•On replacement installations, mount the new thermostat in place of the old
one if possible.
•Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor,
and in a room that is used often.
•Do not install it where there are unusual heating 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
•Do not locate in unusual cooling conditions, such as: on a wall separating
an unheated room; or in a draft from a stairwell, door, or window.
•On new Installations, follow the guidelines listed below.
•Do not locate in a damp area. This can lead to corrosion that will shorten
thermostat life.
•Do not locate where air circulation is poor, such as: in a corner or an
alcove; or behind an open door.
•Do not install the unit until all construction work and painting has been
completed.
• This thermostat does not require leveling.
You will need #1 Phillips screwdriver (small) and
Drill with 3/16-in. (4.8mm) bit for this installation.
Good
5ft.
(1.5m)
PG 1
PG 2
Install Guide 3M-10

Remove old unit
Label Wires to Old Unit
Mount the 3M-10
•Separate front from back of unit. Grasp the front of the
unit and the back of the unit and pull apart. The
thermostat body away from the base.
•Hold the base against the wall, with the wires coming
through the opening below the terminal block.
•Position the base for best appearance
•Attach the base to the wall with the two
screws provided.
•If you are mounting the base to sheet
rock or if you are using the old
mounting holes, use the plastic
anchors provided.
Drill a 3/16-in.(4.8mm) hole
for the insert at each screw
location, then mount the base.
PG 3
PG 4
Terminals
•Switch electricity to the furnace and air conditioner OFF;
then proceed with the following steps.
•Remove cover from old thermostat. Most are snap-on types and simply pull
off. Some have locking screws on the side or front. These must be loosened.
•Note the letters printed near the terminals.
•Carefully attach labels (enclosed) to each wire. Label the wires one at a
time. You must have all the wires labeled before you proceed.
Remove the wires from the terminals of the old thermostat.
• Make sure the wires do not fall back inside the wall.
• Wind them around a pencil to keep them from falling .
• Remove the old thermostat from the wall. Fill wall
opening with fiber glass insulation to prevent drafts.
Caution
DO NOT REMOVE WIRES FROM OLD THERMOSTAT UNTIL YOU HAVE
CAREFULLYLABELED THEM, WITH LABELS PROVIDED.
THERE IS NO STANDARD COLOR CODE FOR THESE WIRES.

PG 5
Please be aware of the following power options
1) The 3M-10 can run on batteries only. (2AA Alkaline)
The batteries will last well over 1 year. If the batteries are not replaced the thermostat will
stop working.
2) The 3M-10 can run on the C wire if available.
As shown in the wiring diagrams, The C wire is the other side of the 24VAC heating
transformer. If the C wire is used, the batteries are not needed.
Install Batteries
The 3M-10 requires batteries to operate your
system.
Switch MODE switch to OFF and the FAN switch to
AUTO.
• Insert 2 AA alkaline batteries according to the
polarity noted in the compartment.
NOTE: Replace the batteries once a year
or when this low battery indicator appears
on the right side of the unit.
Gas-Electric Selection
Power Options
Gas/ Electric
jumper
Circuit
Board
PG 6
•If you have Electric Heat or a Heat Pump you must
place the Gas/Electric jumper in the ELECT position
(thermostat controls the Fan).
•If you have Gas Heat the
Gas/Electric Jumper should be
in the GAS position (furnace
controls the Fan ).

PG 7
PG 8
Please refer back to these guidelines for safe and secure wire
connections.
• Take care not to damage the labels for each wire in handling.
• Strip insulation 3/8 in. (9.5mm) from wire ends.
• Connect labeled wires only to a terminal with corresponding letter.
• Bend the wire slightly, insert the wire under the contact plate and
tighten the screw down onto the wire.
The Wire Label List shows wire
labels used on thermostats.
Please determine what wires you
have and select the correct wiring
diagram to "go to" on pages 8-9.
If you have a HEAT PUMP select a
wiring diagram on pg 9.
Before you Connect Wires
Caution
Do not allow
wires to touch
each other or parts on unit.
Wires must be routed through
the hole in the back plate, below
the terminal block, or they will
hit parts on the cover.
Make sure your wires are labeled . This is necessary to determine which step-by-step
wiring diagram you should use. This may require you to find the 'other end' connection for
each wire on your heating or air conditioning equipment and read the label there.
If you have a Zoned Heating/Cooling system with multiple thermostats, please refer to
our website at www.radiothermostat.com/filtrete for installation notes or call 1-888-607-5824
Wire Connections
What Wires Do You Have?
Go To Page 13 Go To Page 14
WIRE LABEL LIST
R - Single source power for heat/cool (R connected to
RC and RH using the jumper wire)
RH or R - Heating Power
RC - Cooling Power
W - Heating return
G - Fan return
Y - Compressor return
H - Humidifier (built into the furnace)
W2 - 2nd stage heat in NORMAL, auxiliary heat in PUMP mode.
A - For 3 wire zoned heating systems
C - AC power for the thermostat if available
O - Damper control (Zoned heating) or heat pump
changeover valve (powered in COOL)
B - Damper control (Zoned heating) or heat pump
changeover valve (powered in HEAT) NOTE: Do
not connect both O and B on a heat pump. Connect O
to O & tape off B.
X - Tape off X
E - Tape off E
Go To Page 11Go To Page 12

Wire Connections cont
When you have finished connecting the wires attach
control unit to wall unit. Hook the top of the body
onto the base, swing the body down, and snap the
body onto the base.
If you do not find the wiring information for
your system try our webiste www.radiothermostat.com/filtrete
for more information or call our customer service
hotline at 888-607-5824.
Check Unit
Follow these procedures to verify you have correctly
installed the unit.
To check Fan: (If you connected the G wire)
• Switch Mode to OFF during fan test.
• Switch the FAN switch to the ON position. Verify air is blowing from vents.
• After test, return to Fan switch to AUTO, and Mode to HEAT or COOL
To check HEAT mode:
• Set the mode switch to HEAT. Set the
fan switch AUTO.
• Adjust the temperature control to raise
the target temp to 90o.
• Wait 5 min.
• Verify that heat is blowing from the
system.
To check COOL mode:
• Set the mode switch to COOL.
• Adjust the temperature control to 5obelow the room temperature.
• Wait 5 min.
• Verify that cool air is blowing from the system.
Congratulations, you have successfully installed your unit. Please proceed to
the OPERATING Guide to initialize the new thermostat.
REMEMBER, Mode Switch must be in HEAT or COOL to operate.
PG 9
PG 10
Mode
Switch
Fan
Switch
Go To Page 15 Go To Page 16 Go To Page 17

PG 11
PG 12
STEP 1 - Connect the R
(or RH) wire to the RH
terminal on the thermostat.
This connects the Heater
Power to the thermostat.
STEP 2 - Connect the W wire
to the W terminal on the
thermostat.
This connects the heater control line
to the thermostat.
Your Heater is now connected to the thermostat.
STEP 1 - Connect the R (or RH)
wire to the RH terminal on the
thermostat. This
connects to the
Heater Power .
STEP 2 - Connect the
W wire to the W
terminal on the thermostat.
This connects the heater control line to
the thermostat.
STEP 3 - Connect the G wire to the G terminal on
the thermostat.
This connects the Fan to the thermostat.
Your system is now connected to the thermostat.
Return To Page 8
Return To Page 8
2 WIRE Heating
(GAS MILLIVOLT or 24vac
NOTE: Wires marked with
the dotted line are optional.
NOTE: Wires marked with
the dotted line are optional.
3 WIRE
jumper
wire
FURNACE
HEAT
Thermostat
R W CHEAT
Power
FURNACE
jumper
wire
Heat
Power Heat
WG RH C
FAN
Thermostat

PG 14
PG 13
STEP 1 - Connect the Y wire to
the Y terminal on the thermostat.
This connects to the Cooler
compressor.
STEP 2 - Connect the RH or R
wire to the RH terminal on the
thermostat.
This connects the Heater/Cooler
Power.
STEP 3 - Connect the W wire to the W
terminal on the thermostat.
This connects to the heater control line.
STEP 4 - Connect the G wire to the G terminal on the Thermostat.
This connects to the Fan.
Your HVAC system is now connected to the thermostat.
STEP 1 - Remove the Jumper wire.
STEP 2 - Connect the Y wire
to the Y terminal on the
thermostat. This connects to
the Cooler compressor.
STEP 3 - Connect the RH wire to the RH
terminal on the thermostat. This connects to the
Heater Power .
STEP 4 - Connect the RC wire to the RC terminal
on the thermostat. This connects to the Cooling
Power .
STEP 5 - Connect the W wire to the W terminal on the thermostat.
This connects to the heater control line.
STEP 6 - Connect the G wire to the G terminal on the Thermostat.
This connects to the Fan.
Your HVAC system is now connected to the thermostat.
Return To Page 8
Return To Page 8
5 WIRE NON_HEAT PUMP
4 WIRE NON_HEAT PUMP
NOTE: Wires marked with
the dotted line are optional.
NOTE: Wires marked with
the dotted line are optional.
HVAC SYSTEM
jumper
wire
Heat
Power Heat
WG RH
C
FAN
Y
Cool
Comp
Thermostat
HVAC SYSTEM
Remove
jumper
wire
HEAT
Power
Heat
WG RHRC
C
FAN
Y
Cool
Comp
COOL
Power
Thermostat

PG 16
PG 15
STEP 1 - Connect the G wire to
the G terminal on the thermostat.
This connects the Fan.
STEP 2 - Add a jumper wire
between W and Y.
STEP 3 - Connect the Y wire to
the Y terminal on the thermostat.
This connects the Compressor.
STEP 4 - Connect the O or B wire
to the O or B terminal on the thermostat. (If you have
both O and B contact your local HVAC contractor for
further help) This connects the change over valve.
STEP 5 - Connect the R wire to the RC terminal on the
Thermostat. This connects to the 24vac power.
Your HVAC system is now connected to the thermostat.
Return To Page 9
HEAT PUMP
w/o Auxiliary Heat
NOTE: Wires marked with
the dotted line are optional.
NOTE: Wires marked with
the dotted line are optional.
O or B
Single Stage HEAT PUMP
Change
Over
G
O or B
R
C
FAN
Y
Comp
24VAC
Power
jumper
wire
jumper
wire
Thermostat
STEP 1 - Connect the G wire to
the G terminal on the thermostat.
This connects the Fan.
STEP 2 - Connect the
between W wire to W .This
connects the 1st stage heat.
STEP 3 - Connect the between
W2 wire to W2 .This connects the 2nd stage heat.
STEP 4 - Connect the R wire to the RH terminal on
the Thermostat. This connects to the 24vac power.
Your HVAC system is now connected to the
thermostat. (If the system also has AC, connect it per
instructions for RC and Y on pg 14)
Return To Page 9
NORMAL 2 Stage
Heat System
Two Stage Heat System
G
RW2
C
FAN
W
Two Stage
Furnace
jumper
wire
Thermostat

The 3M-10 can be used with most 24 volt gas, oil or electric heating and air
conditioning systems, heat pump systems with or without auxiliary heat, Normal 2
Stage systems, Zoned Hot-Water, Zoned Forced air systems, or gas millivolt
heating systems. It cannot be used with 120 volt heating systems or. Ask The
Home Depot for other thermostats to control those systems.
The 3M-10 is digital. You can program your desired Heat
and cool temperature by setting the dial. The unit uses
no harmful mercury.
A 5-minute minimum off time in COOL protects your air
conditioning system from being damaged.
Two "AA" batteries (not included) are used to run the
thermostat in some installation. "C" wire installations can
make batteries last many times longer.
3M-10 Features
PG 18
PG 17
STEP 1 - Connect the G wire to
the G terminal on the thermostat.
This connects the Fan.
STEP 2 - Add a jumper wire
between W and Y.
STEP 3 - Connect the Y wire to
the Y terminal on the thermostat.
This connects the Compressor.
STEP 4 - Connect the O or B wire to the
O or B terminal on the thermostat. (If you have both
O and B wires, use the O and tape off the B ).
This connects the change over valve.
STEP 5 - Connect the R wire to the RC terminal on
the Thermostat. This connects to the 24vac power.
STEP 6 - Connect W or W2 to W2 on the thermostat.
This connects the AUX heat.
Your HVAC system is now connected to the thermostat.
Return To Page 9
HEAT PUMP
with Auxiliary Heat
NOTE: Wires marked with
the dotted line are optional.
O or B
(not both)
HEAT PUMP
Change
Over
AUX
Heat
G
O or B
R
C
FAN
Y
Comp
24VAC
Power
jumper
wire
jumper
wire
Thermostat
1002-003
Customer Support: 888-607-5824
or Visit our website www.radiothermostat.com/filtrete
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