3M 50 User Manual

Operation Guide 3M-50

To turn your 3M-50 ON, press the MODE button on the right side.
This cycles the 3M-50 through HEAT, COOL, AUTO and OFF modes.

PG 1

The 3M-50 programmable communicating
thermostat operates via a high-quality, easy-to­use touch screen. To program or adjust your 3M-

50, simply touch your nger rmly to the screen.

The screen will automatically light up and you will
hear a “beep.” The screen will respond differently
to different types of touches, so you may want to

experiment by touching it different ways, nger,
ngernail, etc. Do not use a sharp or metallic

device; it will scratch the screen.

Statement of use: 100% Compatible with all popular
residential HVAC systems; 24VAC single, two stage
conventional heating systems (gas/oil/electric), heat
pumps, single stage or with auxiliary heat (electric
or fossil), zoned forced air and zoned hot water (2
or 3 wire), millivolt systems (with a 12-24 AC or DC
source), one or two stage cooling, and hybrid systems.

1005-011-001

HVAC
selection
switches

Save
Energy
button

Power Grid
status
indicator

Reset
button

top cover

bottom

cover

RADIO

1

LINK

TARGET

TEMP

Wire
terminals

MENU
butto

PROG
butto

Mode
button

Fan
button

n

n

D

A

Y

A

U

P

M

TO

F

COOL

Touch screen

ENGLISH

PG 2

Control Screens

HOME Screen

Before you operate the 3M-50 please get familiar with these basic control screens. All the 3M-50
functions are accessed through these screens: HOME, MENU, PROGRAM and MANUAL. The 3M­50 touch screen technology allows you to select (by touching) an item and change it using the +/­arrows or the time arrows.

The simple HOME screen is
displayed when the unit is operating.

Touching the HOME icon

on
another screen will always return
you to this screen.

To set a Mode:
Press the mode button on the side.
The 3M-50 will step through the
modes HEAT, OFF, COOL, OFF
and AUTO in order. The LCD shows
what mode you are in.

Time
of Day

RADIO

1

LINK

TA RGET TEMP

Target
Temperature

Current Room
Temperature

PM

Radio
Indicator

Time
Slot

DAY

Day

Fan
Status

AUTO

F

COOL

Chirp
Indicator

Lock

Status

Thermostat
Mode

MENU Screen The MENU screen is the gateway to many functions or settings of the

3M-50. It is displayed when you press the MENU button. [See page 10 for details]

Set Time

Touch this area to set
the time of day.

Left arrow goes back,
right arrow goes forward.

Differential to set
for 2nd Stage start.

Temperature

Swing set

Daylight Savings Time

Set Day

Touch this area to set
the day of the week.

Calibration control

Use this to calibrate your
LCD display match to
another thermometer.

Filter Timer

set

Touch and hold

5 sec to change.

FILTER
SWING
DIFF

CALIBRATE

HVAC SETUP

Touch this in OFF mode to
configure the unit to work with
your HVAC system.

Chirp set

Touch this to turn the
audible chirp on or off.

F

HVAC
SETUP

Lock Program

Touch for 5 sec

to lock or unlock.

o

Set

C -oF

Touch this
to set temp
display units.

Return
to HOME
screen.

PG 3

PROGRAM Screen The PROGRAM screen sets the 3M-50 control for your

home HVAC system. Press and hold PROG for 10 sec to access it. After that it is displayed when you
press the PROG button.

Set Time Slot

Touch this area to set the
Time Slot you want to program.

[See page 8 for details]

Return HOME

When programming is complete
touch this to run your program and
return to the HOME screen.

PG 4

Set Program Time

Touch this area to set the
time of day you want each
time period to start.
Left arrow goes back,
right arrow goes forward.

[Touch and hold for fast set.]

Copy

Touch this area to copy
current day’s program
to the next day.

Set Program Day

Touch this area to set the day of the week
you want to program.

COPY DAY

PROGRAM

AM

MORN

F

HEAT

Temp Up / Temp Down

Touch these to raise and
lower each Target Temp.

[Touch and hold for fast set.]

MANUAL Screen The Manual Screen control screen is where you can make

y

temporary changes to your 3M-50’s operation. From the Full HOME screen, touch the main
temperature display to use this screen. [See page 13 for details]

Room

Target
Temperature

Temperature

TEMPORARY

EMER
HOLD

HOLIDAY

EMER heat for

HEAT PUMP systems.

Manual Override Indicator

Shows TEMPORARY when
you have modified the Target Temperature

Temp Up / Temp Down arrows
Touch these to raise and lower
the manual override Target Temp.

F

Return HOME

HOLIDAY

Touch this to invoke a

single program that repeats day

HEAT

after day until you turn it off.

HOLD Touch this area to operate the thermostat as
a manual thermostat. It will keep the temperature

ou set until you change it or cancel HOLD.

PG 5