User's Manual

GENERAL INFORMATION
The thermostat normally displays room temperature, mode of operation and
whether cooling or heating is currently on. The six buttons on the front of the
unit allow complete control of your equipment.
You may select different heating and cooling setpoints for the system to
maintain, e.g., 70° in heating and 75° in cooling. Raising or lowering the set-
points in heating or cooling is as simple as pushing a button. In addition, you
may choose to display the temperature in °F or °C.
The thermostat also allows you to select continuous fan operation (useful
when using an air cleaner) or have the fan come on with the equipment.
BUTTON FUNCTIONS
SYSTEM Press to select COOL only, HEAT only, AUTO (cool and
heat), OFF, or EMERGENCY HEAT (heat pump
installations only).
FAN Press for continuous fan or auto fan
OCCUPANCY Press to select HOME (Occ1), AWAY (Occ2), SLEEP
(Occ3), VACANT (Occ4), or User Defined (USr1-USr4)
occupancy modes.
HOLD/RESUME Press to alternate between HOLD OVERRIDE and
RESUME program.
Operating Instructions
Single/Multistage Conventional or
Heat Pump with Auxiliary Heat
Electronic Digital Communicating
Non-Programmable Thermostat
HEATING 
Select the temperature you want your equipment to maintain while in
the heating mode by pressing and holding the  or  buttons. The
control setpoint temperature is displayed for 5 seconds.
FAN

The fan will come on automatically when the system is operating,
but there is no indication of this on the display. To select continuous
fan operation, press the FAN button and the display will show .
This is recommended for electronic air cleaners and continuous ven-
tilation requirements.
OFF
To turn off the heating or cooling system, press the MODE button
until the word OFF appears on the LCD. It will remain displayed until
the mode is changed. The OFF mode prevents the system from
being energized.
Avoid using the OFF mode during extremely cold weather to prevent
damage to the equipment from freezing.
AUTO CHANGEOVER
You may set the thermostat to automatically switch from heating to
cooling mode by pressing the MODE button until the word AUTO
and both the heating  and cooling  icons appear on the LCD. The
thermostat will energize the heating or cooling system based on the
temperatures established for both modes.
USER CONTROLS (CONT’D)
TEMPORARY TEMPERATURE OVERRIDE
Press the  or  to temporarily raise or lower the setpoint until the
next scheduled setpoint change.
HOLD TEMPERATURE OVERRIDE
Press the HOLD/RESUME button to change a Temporary Override
to a Hold Override. This will prevent scheduled setpoint changes.
Press HOLD/RESUME button again to resume scheduled
setpoint changes.
CELSIUS / FAHRENHEIT
Simultaneously press  and  to switch between Celsius (C) and
Fahrenheit (F) temperature display.
REMOTE SENSOR (OPTION)
RS1 – RS2 – RS+V
The thermostat is designed to accept the electronic remote sensor,
which will allow you to locate your thermostat in an area away from
view. Indoor and outdoor sensors are available separately.
TEMPERATURE ACCURACY
Full temperature accuracy will be realized only after the thermostat
has been installed and powered for at least one (1) hour.
NOTES:
ADD-ON HEAT PUMPS
Your DSL thermostat is equipped to enhance the performance of an
add-on heat pump. Your thermostat, in most applications, will perform
the function of a fossil fuel kit.
To select add-on, place switches #3 and #5 to the ON position. The
thermostat will turn the compressor off with a call for auxiliary heat.
When switch #5 is set to normal (OFF), the thermostat will allow the
compressor and the auxiliary heat to be on at the same time.
POWER FAILURES
Your thermostat employs the latest in solid state electronic technology.
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
as the memory is unaffected by power failures of any duration.
When power is restored, the thermostat will continue operating as if the
power had never been off.
USER CONTROLS
SYSTEM – Select the desired mode of operation by repeatedly pressing
the MODE button:
 – indicates cooling system only (the word COOL is displayed for 5
seconds)
 – indicates heating system only (the word HEAT is displayed for 5
seconds)
– indicates both the heat and cool systems (the word AUTO is
displayed for 5 seconds)
 Blinking – indicates cool ON
 Flickering – indicates heat ON
OFF – disables controller so equipment will not operate (fan operation is still
possible in this mode)
E Ht - Emergency heat (heat-pump installations only).
COOLING 
Select the temperature you want your equipment to maintain while in the
cooling mode by pressing and holding the  or  buttons. The control
setpoint temperature is displayed for 5 seconds.
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1 (One) Year Limited Warranty
The manufacturer warrants to the original purchaser that its product and
component parts will be free from defects in workmanship and materials for a
period of 1 (one) year from the date of purchase. Return to the original point of
purchase for replacement of your product.
Warranty Limitations
This warranty begins at date of purchase.
Warranty is Void if:
The date code is defaced or removed.
The product has a defect or damage due to product alteration, connection
to an improper electrical supply, shipping and handling, accident, fire, flood,
lightning, or other conditions beyond the control of the manufacturer.
The product is not installed according to the manufacturers instructions and
specifications.
The product has been installed near sources of electromagnetic interference
(EMI) such as arcing relay contact.
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 consequential
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 manufacturer's
instructions, complies with the limits for a Class B computing device pursuant to
Subpart J of Part 15 of FCC rules.
NEW AND IMPROVED FEATURES
Your new electronic digital thermostat has been designed to pro-
vide accurate control and display of room temperature. It also will
display all relevant system information.
Your new electronic 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 enhancement.
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  or  buttons.