Operation Guide 3M-22
PG 1
The 3M-22 programmable communicating
thermostat operates via a simple keypad. To
program or adjust your 3M-22, simply press
your nger rmly on the keypad keys. The
backlight will automatically light up. You can
progam the 3M-22 with unique 7 days or use
it like a 5-1-1 programmable with Saturday
and Sunday different from all other days of
the week. A program that ts your lifestyle can
save energy.
Statement of use: 100% Compatible with all popular
residential HVAC systems; 24VAC single, two and
stage conventional heating systems (gas/oil/electric),
heat pumps, single or with auxiliary heat (electric or
fossil), zoned forced air and zoned hot water (2 or 3
wire), millivolt systems (with 12-24 AC or DC adapter),
one or two stage cooling, and hybrid systems.
1005-007-001
HVAC
selections
switches
Save
Energy
button
Power Grid
status
indicator
Target
Temperature
Reset
button
top cover
F
C
F
I
LT
E
H
R
A
D
I
bottom
cover
O
LINK
T
ARGET
TEMP
F
Room
Temperature
R
E
AT
S
W
I
N
G
C
A
L
I
B
H
S
E
T
C
L
O
C
K
S
E
T
D
AY
P
R
O
G
R
A
M
M
T
W
H
C
O
Wire
terminals
EMER
switch
Mode
switch
O
L
D
Fan
V
A
C
P
Y
switch
Programing
buttons
ENGLISH
PG 2
Set Clock
Set time of day -
• From the
• Press
screen, Press or to set the time. Press and hold to set the time in fast mode.
to store your settings.
Set day of the week -
• Press (SET DAY) once to set the day of the week. The day of the week display advances
(Initially SU for Sunday). Press again to step throught the days of the week until the correct day
is displayed.
• Press
to store your settings.
Energy Saving Program
This thermostat comes preprogrammed with an energy saving program. This program is
recommended for energy efciency. We strongly recommend that you use this program for one week
and see if it works for you. If it does not t your needs, you can always input a custom program.
EPA
HEAT
All Days 70oF 62oF 70o 2oF
MORN
6:00am
DAY
8:00am
EVEN
6:00pm
F
F 6
NITE
10:00pm
MORN
COOL
6:00am
All Days 78oF 85oF 78oF 82oF
DAY
8:00am
EVEN
6:00pm
NITE
10:00pm
• To run the energy saving program, select HEAT or COOL with the mode switch. The unit is now
running the energy saving program.
• One of the TIME SLOT icons MORN, DAY, EVEN, NITE
comes on. This indicates the TIME SLOT active in the energy
saving program. For program details refer to the energy saving
program chart.
time
time slot
HEAT
F
I
D
O
A
R
mode
K
IN
L
To Change the Program
NOTE: 60 Second Rule-
During programming if a button is not pushed within 60 seconds, the
target temp
T
E
G
R
TA
M
P
E
T
day
unit will go out of the set mode. Everything you have input in this
programming will automatically be saved.
• Select either HEAT or COOL by setting the MODE switch.
• Press and hold the
• Select the day you want to program by pressing
daily PROGRAM button for 5 seconds.
to cycle through the days of the week to the
desired day.
• Select the Time Slot (period) you want to program
• Select the desired start time of that Time Slot by pressing
(morning, day, evening, night).
or to set the time.
This is the starting time of the Time Slot.
• Select the desired target temperature for that time slot by pressing the +/- buttons to select the
desired temperature for that Time Slot.
• Repeat this setting procedure for all four Time Slots
of the day.
• Repeat the setting procedure for all days you want to program.
temp
PG 3
Y
COP
This will copy one day’s programming to the next day. Press
Y
COP
once. The information for the
current day will be copied to the next day which will appear on the screen. Holding down COPY for
over 3 seconds will copy to all 7 days.
PG 4
• Press
to store your settings.
Keypad Functions
TIME
Press (time backward) or (time forward) to set the current time. Press and hold the arrow
for fast time set (15 minute step).
DAY
Press (SET DAY) to set the day of the week. The day of the week display advances (initially SU
for Sunday). Press again to step throught the days of the week until the correct day is displayed.
SWING ( HVAC cycling rate)
This feature allows you to set the desired variance in temperature between the 3M-22 setting and
the room temperature required before the heating or cooling system will turn on—from 0.5° to 2.0° F
(.25° to 1° C). For example, if HVAC CYCLING is set to 2.0° F and the 3M-22 is set to 70°F, the heat
cycle will start when room temperature drops to 68°F. Similarly, the cooling system will start when
the room temperature increases to 72°F. The HVAC then runs and will shut off at the target.
To set SWING rate:
• Press SWING (under the
icon).
• Press the +/- buttons to select the desired swing from 0.5° to 2.0° F.
The HVAC cycling rate will be more at .5°F and less at 2°F. Default is 1°F
• Press
F
Set - Press both
C
to store your settings.
F
C
to toggle between oF to oC .
FILTER CHECK FILTER ALERT
The 3M-22 is programmed to remind you when the HVAC air lter needs changing. It is set to remind
you every 90 days. The Check Filter indicator blinks when your lter limit is reached.
To change the time of this reminder:
• Press FILTER (under the icon) to show lter usage to date.
• Press
• Hold FILTER for 2 seconds to set lter limit with +/- buttons Filter DAYS are displayed on screen.
• Press
to clear accumulated days. Press arrow to restore accumulated days.
to store your settings.
PG 5
LOCK
The 3M-22 has a simple LOCK mode to avoid unwanted modications to the thermostat.
To LOCK:
Press and hold HOME for 3 seconds
The LOCK icon will show on screen, All buttons are locked except HOME.
To UNLOCK:
Touch and hold HOME for 3 seconds. The LOCK icon will go out.
CALIB
Your thermostat was accurately calibrated at the factory to ±1° F of actual ambient temperature.
You do have the option, however, to change the display temperature to match that of a previous
thermostat, or to match another thermostat already in your home. The range of change is from -6°F to
+6°F or -3°C to +3°C.
To change your Thermostat Calibration:
Press CALIB (under the icon)
Use the + / - to adjust the displayed temperature up or down, as desired.
The temperature display will show the modied temperature reading that will be displayed on the
PG 6
HOME screen and used as the new room temperature. Press
to store your settings.
HOLD
This will make your 3M-22 act like a non-progammable thermostat.
you set indenitely, until you turn HOLD off. Take care using the HOLD function as the program is now
bypassed. To set a hold target temperature, press HOLD and use the +/- buttons to select your hold
temperature. The HOLD icon will display on the HOME screen indicating you have changed the Target
Temperature. The system will HOLD this temperature until you return to the manual screen.
To turn off hold press HOLD again. HOLD is also canceled when you set the mode to OFF.
It will hold the target temperature
TEMPORARY override Touch the + / - buttons to select your desired temporary Target
Temperature. The TEMPORARY icon will display indicating you have modied the programmed
Target Temperature for the current Time Slot only. It goes back to the program target at the next
period. Also once in temporary, when the target is set the same as the programmed target for that
Time Slot, the word TEMPORARY will go out.
HOLIDAY PROGRAM
This is a single day program that repeats day after day until you turn it off. It supersedes the weekly
program. To use it press
HOLIDAY. The default holiday program is shown below. [Default
program: HEAT 70oF all day and 62oF at night. COOL 78oF all day and 82oF at night.]
PG 7
PG 8
To modify the HOLIDAY program, press and hold the
• Select the Time Slot (period) you want to program
• Select the desired start time of that Time Slot by pressing
button for 3 seconds.
(morning, day, evening, night).
or to set the time.
This is the starting time of the Time Slot.
• Select the desired target temperature for that time slot by pressing the +/- buttons to select the
desired temperature for that Time Slot.
• Repeat this setting procedure for all four Time Slots
• Press
NOTE: The default HOLIDAY program is set as 2 periods; all day (same target MORN, DAY, and EVEN) and a
different target for NITE.
to store your settings.
of the HOLIDAY program.
Other Functions
SAVE ENERGY Button The “Save Energy” feature on the 3M-22 provides a simple, easy-
to-use way to help you manage your energy use. SAVE ENERGY automatically adjusts your target
temperature up in COOL or down in HEAT by 4oF. To use Save Energy, press the Save Energy
button in the upper left corner of the unit. The screen will now read “Save Energy”. To return to
normal operation, press the “Save Energy” button again. This is useful to save energy if you are gone
for a short time.
FAN Switch The fan control is normally in AUTO mode, meaning that the fan operates
automatically with the HVAC system and the thermostat. When the fan switch is in ON, the fan will run
continuously until switched back to AUTO.
NOTE: Fan ON function is available in the OFF mode to allow simple ventilating.
EMER HEAT If you set your 3M-22 for HEAT PUMP with auxiliary heat, EMER function is
available with a switch under the top cover on the right. If you switch EMER to ON, your HEAT PUMP
is disabled and auxiliary heat is your sole source of heat. This manual override stays active until you
switch EMER off. Auxiliary heat is more expensive than the heat pump so use EMER only if the heat
pump cannot keep up or is defective.-
RESET button
programs that have been stored in permanent memory.
The RESET button re-boots the 3M-22 processor. It does not effect the user
Compressor Protection The 3M-22 has a minimum cycle time of 4 minutes to protect your
compressor in cool and in heat pump (if you have one). During this time the compressor will not come
on until the 4 minute delay is over.
Simple Screen This display mode limits the amount of information on screen and limits the
functions to just the + and - buttons.
To access the Simple Screen hold down both + and - buttons at the same time for 10 seconds.
To leave the Simple Screen hold down both + and - buttons at the same time for 10 seconds.
PG 9
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