DESCRIPTION OF ICONS
Display icons vary according to the model. Your thermostat may not display all of the icons shown.
DIP SWITCH OPTIONS AND FUNCTIONS
Positioning the DIP switches in either the ON or OFF position
enables you to choose between two different options. The DIP
switches are located on the interior of your thermostat and may
be accessed by following the procedure for removing the thermo-
stat from the subbase. The following list describes your DIP
switch options.
1. 2 Events or 4 Events You may select either a 2- or 4-event
schedule: 2 events include Day and Night; 4 events include
Morning, Day, Evening, and Night.
2. Smart Fan
"
With the Smart Fan switch in the ON position
and the fan selected, the thermostat will keep the fan running
continuously during the occupied programs and automatically
cycle the fan with a call for heating or cooling during the unoccu-
pied program. (The unoccupied program is the Night event.)
3. 2-Minute or 4-Minute On Times This option allows you to run
the equipment for either a 2- or 4-minute minimum on and off
time.
4. Keypad Lock
#
In the ON position, locks out all buttons
except the OUTDOOR button.
5. Plenum Fan Switch In the OFF position, the fan comes on
immediately with a call for heat. In the ON position, the fan is con-
trolled by the equipment (plenum switch control).
6. Single or Multi-Stage Set to OFF for 1 compressor stage of
heating or cooling (single stage) or ON for equipment with 2 com-
pressor stages of heating and/or cooling (multi-stage).
7. LED and Filter Icon In the ON position the display will show
the filter icon when the left LED is energized.
8. LED and Wrench Icon In the ON position the display will show
the wrench icon when the right LED is energized.
SPECIFICATIONS
Rated Voltage 18-30 VAC, 24 nominal
Rated A.C.
0.050 Amps to 0.75 Amps continuous
Current
per output with surges to 3 Amps Max.
Rated D.C.
0 Amps to 0.75 Amps continuous
Current
per output with surges to 3 Amps Max.
Control
Heating: 38° to 88°F in 1° Steps
Range
5° to 30°C in 1° Steps
Cooling: 60° to 108°F in 1° Steps
16° to 40°C in 1° Steps
Thermostat
Measurement Range
28° to 124°F or 0° to 48°C
O.D.T. Displayed
Range
-50° to 119°F or -48° to 47°C
Control Accuracy
±0.5°C at 20°C, ±1°F at 68°F
Minimum
(between heating and cooling)
Deadband
2°F or 1°C
Note: This thermostat contains electronic circuitry replacing the conventional
mechanical anticipator.
Two (2) Year Limited Warranty
The manufacturer warrants to the original purchaser that its prod-
uct and component parts will be free from defects in workmanship
and materials for a period of Two (2) year from the date of pur-
chase. Return to the original point of purchase for replacement of
your product.
Warranty Limitations
This warranty begins at date of final purchase.
Warranty is void if:
The date code is defaced or removed.
The product has a defect or damage due to product alteration, con-
nection to an improper electrical supply, shipping and handling,
accident, fire, flood, lightning, or other conditions beyond the con-
trol of the manufacturer.
The product is not installed according to the manufacturer’s instruc-
tions and specifications.
The product has been installed near sources of electromagnetic
interference (EMI) such as arcing relay contacts.
Owner’s Responsibility
Provide proof of purchase.
Provide normal care and maintenance.
Pay for freight, labor and travel.
Pay for service calls related to product installation.
Return any defective product.
In no event shall the manufacturer be liable for incidental or conse-
quential damages.
This warranty gives you specific legal rights and you may have others
which vary by state and/or province. For example, some states
and/or provinces do not allow the exclusion or limitation of incidental
or consequential damages, so this exclusion may not apply to you.
The manufacturer’s continuing commitment to quality products may
require a change in specifications without notice.
This equipment, if installed in strict accordance with the manufac-
turer’s instructions, complies with the limits for a Class B computing
device pursuant to Subpart J of Part 15 of FCC rules.
DIP Switch
DIP Switch OFF
DIP Switch ON
1
2
3
4
5
6
7
8
4 events per day
Smart Fan disable
4 minute minimum ON
Keypad unlock
Fan with heat call
Single stage
LED #1 + No icon
LED #2 + No icon
2 events per day
Smart Fan enable
2 minute minimum ON
Keypad lock
Fan with plenum switch
Multi-stage
LED #1 + Filter
✪
icon
LED #2 + Fault
✩
icon
NEW AND IMPROVED FEATURES
Your new electronic programmable thermostat has been made even
better by the introduction of several new and improved features.
Building on its reputation for efficient and dependable operation,
your thermostat now offers the following list of enhancements.
Progressive Recovery (available on programmable models)
Selecting progressive recovery on your programmable thermostat
causes the thermostat to anticipate the programmed setpoint
change, thus allowing the climate-controlled area to reach the desired
setpoint when required. The progressive recovery option is selected
by pressing the FAN and PROGRAM buttons simultaneously.
Thermostat and Sensor Calibration
Release 3 provides easy calibration of the thermostat and remote
sensors. Simply press and hold the FAN button for 10 seconds
and adjust with the up or down buttons.
Programming Revert Time Extended
The programming revert time has been extended to 2 minutes.
Push Button Auto Repeat
Programming is easier with the push button auto repeat feature.
Extended Backup Time
The power failure backup time has been increased to 2 hours.
BUTTON FUNCTIONS
CLOCK
Press to set current day, hour and minute
SET TEMP
Press to set the heating and cooling setpoints
PROGRAM Press to set program days and start times. Press
simultaneously with the FAN button to select pro-
gressive recovery.
HOLD
Press to hold the current setting. The program will
hold indefinitely or until RESUME is pressed.
OUTDOOR Press to display the outdoor temperature (optional)
MODE
Press to select cool only, heat only, auto (cool and
heat), or off
FAN
Press for continuous fan or auto fan
RESUME
Press to exit the hold or override program or when
programming is complete.
✞! ✟
Press down or up buttons during programming and
overrides to lower or raise setpoints and change the
day and time
Selecting Fahrenheit or Celsius Display
Simultaneously press the
✟
and
✞
buttons to switch between
Fahrenheit and Celsius.
Changing the Clock from 12 to 24 Hour
To change the time indicated from 12 hour to 24 hour, press and
release the CLOCK button, then press the MODE button.
Power Outages/Failures During Regular Program Schedule
Should your power fail at any time during the regular program, the
thermostat will maintain the clock internally for up to 2 hours. If the
power has not been restored during this time, the clock will stop.
When the power is restored, the thermostat clock defaults to a
flashing 12:00 AM. The thermostat will be held in the Night pro-
gram until the user resets the clock. The thermostat will display
AC when the 24 VAC is not powered. One of the unique features
of your thermostat is that no battery is required to maintain your
selected setpoints in the event of a power loss, since the memory
is unaffected by power failures of any duration. There is no reason
to reprogram the setpoint temperatures or start times since the
thermostat will retain these program parameters automatically.
UNDERSTANDING 7 DAY PROGRAMMING
It is recommended that you read and understand these
instructions before you attempt to program your
thermostat.
Programming your thermostat involves selecting the temperature
you want in your home and selecting the time you want it to be
that temperature.
Each time schedule is known as an event. An event ends at the
same time that the next event begins so only a starting time for
each event is required.
Your thermostat allows you to choose between a 2-event (Day
and Night) or 4-event schedule. This is a DIP switch selectable
option. For a more detailed description of event options refer to
“DIP Switch Options and Functions.”
Event = Morning
✣
, Day
✥
, Evening
✤
, Night
✠
Event Time = the time the event starts
Event Setpoint = the temperature set during the event;
each event can have only one heat
and one cool setpoint
The Morning event is typically when you wake up and is the first
event of the day. The Day event is normally set when you leave
for work. The Evening event is usually set for when you arrive
home. The Night event is set when you go to bed.
Each event will have two (2) temperatures: 1 heating temperature
and 1 cooling temperature. The cooling temperature must be at
least 2 degrees F / 1degrees C higher than the heating temperature.
The event setpoints are programmed once for all seven (7) days.
The thermostat allows a different program for each day of the
week. Complete the chart labeled “Set Your Personal Schedule”
with your desired temperatures and time schedules before begin-
ning programming.
To exit programming at any time, press and release the RESUME
button, or 2 minutes after pressing the last button the display will
automatically change to the normal display.
PROGRAMMING THE THERMOSTAT
Setting the Current Day and Time
1. Press and release the CLOCK button. The display will flash MO
for Monday.
2. Press the
✞
or
✟
button until the current day appears on the
display.
3. Press the CLOCK button to select the hour. The display will
flash 12:
4. Press the
✞
or
✟
button until the current hour appears on the
display. Be sure the AM or PM corresponds to the proper time.
5. Press the CLOCK button once again to select the minutes. The
display will flash :00.
6. Press the
✞
or
✟
button until the current minutes appear on
the display.
7. Press RESUME or wait for the regular display to appear.
You have now set the current day and time on the thermostat and
are ready to begin programming the details of the events and set-
points.
Program the Events
The event programming procedure that follows assumes the ther-
mostat is in the AUTO mode and set for 4 events per day (DIP
switch #1 set in the OFF position). If you require only 2 events per
day you may change this option by setting DIP switch #1 to the
ON position. Refer to “DIP Switch Options and Functions” for
details. The programming procedure remains the same except
Operating Instructions
enerstat SMS-1 7 Day Programmable Thermostat
Multistage Auto Changeover 2 Heat/2 Cool
Model SMS-1
111-103C 5/2000
