commercial
THERMOSTAT
Digital T2900
Thermostat
7-DAY
PROGRAMMABLE
up to 3-heat
& 2-cool
Control up to 3 Heat & 2 Cool Stages
3 Configurable Outputs Adjustable 2nd & 3rd Stage Timers & Deadbands Backlit Display & Button Legends
Aux Heat Indicator Dry Contact Equipped Accepts Comfort Call
Phone Control Accessory
HEAT
COOL HEAT
PUMP
Outdoor Sensor Ready with High/Low Readouts for the Day
Set Point Limiting
Accepts EZ Programmer
Economizer Control
Preoccupancy Fan Purge
Remote Averaging
Programmable Output
Light Activation Equipped
Accepts Optional Humidity Module: Controls Humidification, Dehumidification and Reheat 
Accepts Optional IR Remote Control
Meets Commercial California Title 24
Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage Electric Cooling & 3 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat.
OWNER’S
MANUAL
Venstar Inc. 04/08
CAUTION
Follow the Installation Instructions before proceeding. Set the thermostat mode to “OFF” prior to changing settings in setup or restoring Factory Defaults.
CAUTION
NEVER PUT MORE THAN ONE
JUMPER ON THE SAME MISC
JUMPER BLOCK!
THIS MAY DAMAGE YOUR
THERMOSTAT AND VOID
YOUR WARRANTY.
MISC3 |
MISC3 |
OK
NOTE: Due to variations in environmental conditions, it is not always possible to achieve the desired humidification or dehumidification setpoint.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
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Thermostat |
T2900 |
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Tested to Comply |
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FCc with FCC Standards |
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4Z95 |
FOR HOME OR OFFICE USE |
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Page i
How to Use This Manual
The Table of Contents divides the thermostat features into sections making it easier to quickly find information.
The first page of each section contains a more detailed Table of Contents for each section, such as the example page shown below.
SECTION 14
Timers and Deadbands
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Header shows section # |
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Section 14 Contents: |
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and title of section |
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Adjusting the Heat/Cool |
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Differential.............................. |
14.2 |
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Adjusting the Cycles |
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Per Hour.................................. |
14.3 |
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Section contents |
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Adjusting the Deadband.......... |
14.4 |
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Adjusting the Minutes of |
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Run-Time Before the |
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14 |
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...............................Next Stage |
14.6 |
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Selecting 2nd Stage Turn |
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Visible section tab |
Off Temperature |
14.7 |
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on the side of the |
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Section and page #
Page 14.1
In addition, this manual also has an Index to help you find any information regarding this thermostat quickly.
Page ii
Glossary of Terms
Auto-Changeover: A mode in which the thermostat will turn on the heating or cooling based on room temperature demand. Configurable Output Jumper: Using jumpers on the thermostat
you can configure the MISC1, MISC2, and MISC3 terminals to control humidification, dehumidification, 2nd stage cooling, 3rd stage heating, and a programmable output.
Cool Setpoint: The warmest temperature that the space should rise to before cooling is turned on (without regards to deadband).
Deadband: The number of degrees the thermostat will wait, once setpoint has been reached, before energizing heating or cooling.
Dehumidify: To reduce the amount of moisture in the air. Differential: The forced temperature difference between the
heat setpoint and the cool setpoint.
Heat Setpoint: The coolest temperature that the space should drop to before heating is turned on (without regards to deadband).
Humidify: To increase the amount of moisture in the air. Icon: The word or symbol that appears on the thermostat
display.
Mode: The current operating condition of the thermostat (i.e. Off, Heat, Cool, Auto, Program On).
Non-Programmable Thermostat: A thermostat that does not have the capability of running the Time Period Programming.
Programmable Thermostat: A thermostat that has the capability of running the Time Period Programming.
Reheat: Running the cooling and 2nd stage strip heaters at the same time in order to dehumidify the air without cooling down the room temperature.
Temperature Swing: Same as Deadband.
Time Period Programming: A program that allows the thermostat to automatically adjust the heat setpoint and/or the
cool setpoint based on the time of day.
Page iii
Table of Contents
Quick Start |
1 |
Getting to Know Your |
2 |
Thermostat |
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Setting Clock and Day |
3 |
Basic Operation |
4 |
Viewing Outdoor and Remote |
5 |
Temperature and Humidity |
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Programming the |
6 |
Daily Schedule |
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Programming the |
7 |
Fan Operation |
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Thermostat Display |
8 |
Options |
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Humidification |
9 |
Dehumidification |
10 |
Viewing Equipment |
11 |
Run-Times |
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Electric Heat and |
12 |
Heat Pump Operation |
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Timers and Deadbands |
13 |
Using the |
14 |
Programmable Output |
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Programming Remote |
15 |
Sensor Operation |
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Programming the Dry Contact |
16 |
Light Activated |
17 |
Operation |
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Energy Save |
18 |
Operation |
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Programming Run-Time |
19 |
Alerts |
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Programming Holiday Mode |
20 |
Configuring the MISC |
21 |
Outputs |
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Factory Defaults, Calibration, |
22 |
and Sensors |
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Accessories |
23 |
Page iv Advanced Setup Table |
24 |
SECTION 1
Quick Start
1
Section 1 Contents:
Setting the Clock and Day........... |
1.2 |
Selecting the Heat or Cool |
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Mode............................................ |
1.3 |
Selecting Your Desired |
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Temperature................................ |
1.4 |
Using the Fan Button................... |
1.4 |
Note: Following the instructions in this section will allow you to operate your thermostat using the factory default settings. These settings are depicted in the illustrations throughout this manual.
Page 1.1
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MODE HUMIDITY |
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SET CLOCK |
Press the MODE and |
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HUMIDITY buttons |
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at the same time |
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Setting the Clock |
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12:00 Am |
Setup |
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1 |
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Setting the Day
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Setup |
Mo |
2 |
Press the MODE |
MODE HUMIDITY |
and HUMIDITY |
SET CLOCK |
buttons at the |
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same time to |
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return to normal |
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operation. |
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1
During Setup & Programming:
Pressing the UP or DOWN buttons will modify the flashing selection.
To adjust the
Clock or Day use
Press
MODE
Buttons.
Page 1.2
1 Selecting the Heat or Cool Mode
Select Mode by Pressing the MODE Button
Heating Only |
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12:00 Pm |
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Su |
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The HEAT setting indicates the |
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70 68 |
temperature the room has to |
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reach before the furnace will |
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HEAT |
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turn on to heat the room. |
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Cooling Only |
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12:00 Pm |
76 |
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Su |
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The COOL setting indicates the |
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COOL |
temperature the room has to |
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70 |
reach before the air conditioner |
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will turn on to cool the room. |
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Heating or Cooling |
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12:00 Pm |
76 |
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Su |
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AUTO will automatically select |
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AUTO |
COOL |
heat or cool based on room |
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70 68 |
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temperature demand. |
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HEAT |
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Time Schedule for Heating or Cooling
The Program On setting will activate the time period programming for the cooling or heating setpoint ONLY (Morning, Day, Evening
& Night Periods).
Off
OFF indicates both heating and air conditioning systems are turned off.
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12:00 Pm Program On |
76 |
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Su |
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70 |
COOL |
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occupied |
HEAT |
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68 |
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12:00 Pm
Su
OFF 70
Page 1.3
Press
MODE
Press
MODE
Press
MODE
Press
MODE
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Selecting Your Desired Temperature |
1 |
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(adjusting the setpoints) |
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AUTO OR PROGRAM MODE
Pressing the UP or DOWN buttons in Auto or Program mode will adjust both the heat and cool set temperatures
simultaneously. |
Adjust the desired |
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12:00 Pm |
set temperature with the |
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76 |
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Su |
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AUTO |
COOL |
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70 68 |
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HEAT |
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buttons. |
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HEAT OR COOL MODE
Pressing the UP or DOWN buttons in Heat or Cool mode will adjust only the heat or cool set temperature.
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Adjust the desired |
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12:00 Pm |
set temperature with the |
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76 |
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Su |
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COOL |
70
buttons.
Using the Fan Button
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12:00 Pm |
76 |
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Su |
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AUTO |
COOL |
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FanOn 70 |
HEAT |
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68 |
Press
FAN
Fan On indicates constant fan operation. If Fan On is selected the fan will run continuously at all times, except in Off, and will only run if there is a heating or cooling demand in Unoccupied periods. Pressing the FAN button toggles this feature on or off.
Page 1.4
SECTION 2
Getting to Know Your Thermostat
2
Section 2 Contents:
Front Panel Buttons..................... |
2.2 |
Display Features........................... |
2.3 |
Page 2.1
Front Panel
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Warmer Button |
2 |
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Backlit LCD Display |
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(glows red) |
sometimes referred |
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[to as the UP button] |
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12:00 Pm |
74 |
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Mo |
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AUTO |
COOL |
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72 72 |
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HEAT |
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Cooler Button |
sometimes refer- |
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(glows blue) |
red to as the |
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Heat or Cool Demand Indicator |
Override |
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[DOWN button |
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Red = Heat, Green = Cool |
Button |
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PLATINUM eries |
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COMMERCIAL PROGRAMMABLE THERMOSTAT |
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12:00Pm |
74 |
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Mo |
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AUTO |
COOL |
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72 72 |
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HEAT |
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MODE HUMIDITY FAN PROGRAM HOLIDAY OVERRIDE |
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SET CLOCK |
OUTDOOR |
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QUICK RELEASE FOR |
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ACCESSORY PORT |
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(pg. 23.1) |
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MODE HUMIDITY |
FAN |
PROGRAM HOLIDAY |
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SET CLOCK |
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OUTDOOR |
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Page 2.2
Display Features
2
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Am Program On Setup |
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18:88 Pm StartStop |
HI |
88 |
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SuMoTuWeThFrSa |
DeHumidify |
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Service Filter |
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Pan UV Light |
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COOL |
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AUTO |
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Outside |
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OFFON |
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Remote |
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FanOn188 |
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88 |
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Unoccupied |
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AUXHEAT |
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123 |
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LO |
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Override |
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Mode Indicators - Section 4
Selects the operational mode of the equipment. HEAT - Indicates the heating mode.
COOL - Indicates the air conditioning mode.
AUTO - Indicates the system will automatically changeover between heat and cool modes as the temperature varies.
OFF - Indicates heating and cooling is turned off.
PROGRAM ON - Indicates the time period program is enabled to run.
Clock with Day of the Week - Section 3
Indicates the current time and day. This clock is also used to program the time period schedules.
Room Temperature Display - Section 5
Indicates the current room temperature and displays the outdoor temperature when selected.
Desired Set Temperature - Section 4/5
Indicates desired room temperature(s). Also displays the highest and lowest outdoor temperatures for the day.
Outside icon - Section 5
Indicates the temperature displayed is from the optional outdoor sensor. Page 2.3
Display Features
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Am Program On Setup |
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18:88 Pm StartStop |
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HI |
88 |
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SuMoTuWeThFrSa |
DeHumidify |
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Service Filter |
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Pan UV Light |
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COOL |
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AUTO |
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Outside |
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OFFON |
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Remote |
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FanOn188 |
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88 |
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Unoccupied |
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AUXHEAT |
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123 |
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LO |
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Override |
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Occupied & Unoccupied icons - Section 6
Indicates the program number: Occupied 1,2,3,or Unoccupied.
Override icon - Section 6
Indicates the program is currently being overridden for up to 4 hours.
Setup icon - Sections 7-20
Indicates the thermostat is in the setup mode.
Fan On icon - Section 7
Indicates constant, continuous fan operation. When Fan On is not lit - indicates the fan will only operate when necessary to heat or to cool.
Service Filter icon - Section 19
Appears when the filter should be serviced under normal conditions. Adjustable from 0 - 1950 hours of blower operation.
icon - Section 8
Indicates keypad has been locked.
StartStop icon - Section 6
Appears when programming occupied time periods.
Page 2.4
Display Features
2
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Am Program On Setup |
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18:88 Pm StartStop |
HI |
88 |
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SuMoTuWeThFrSa |
DeHumidify |
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Service Filter |
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Pan UV Light |
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COOL |
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AUTO |
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Outside |
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OFFON |
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Remote |
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FanOn188 |
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88 |
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Unoccupied |
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AUXHEAT |
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123 |
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LO |
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Override |
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UV Light icon - Section 11/19
Appears when the UV bulb should be serviced under normal conditions. Adjustable from 0 - 1950 days of operation.
Remote icon - Page 22.4
Indicates the remote sensor reading of the thermostat is being viewed.
AuxHeat icon - Pages 10.5 & 13.4
Indicates 2nd stage electric strip heat is being used when the thermostat is programmed for Heat Pump operation. Only the Aux icon will appear during Cool to Dehumidify to indicate Reheat operation.
Humidify/DeHumidify icon - Sections 9-10
Indicates the system is currently humidifying/dehumidifying the air.
Lo icon - Section 5
Indicates the lowest recorded outdoor temperature for the day.
Hi icon - Section 5
Indicates the highest recorded outdoor temperature for the day.
Service Pan icon - Section 16
Indicates that a sensor (accessory) has detected the condensate drain pan is full and the compressor (Y1) has been locked out.
Page 2.5
SECTION 3 |
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Setting the Clock and Day |
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3 |
Section 3 Contents: |
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Setting the Clock.......................... |
3.2 |
Setting the Day............................. |
3.2 |
Note: During setup & programming pressing the UP or DOWN buttons will modify the flashing selection.
Page 3.1
MODE |
HUMIDITY |
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SET CLOCK |
Press the MODE and |
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3 |
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HUMIDITY buttons |
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at the same time |
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Setting the Clock
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12:00 Am |
Setup |
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1 |
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Setting the Day
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Setup |
Mo |
2 |
Press the MODE |
MODE HUMIDITY |
and HUMIDITY |
SET CLOCK |
buttons at the |
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same time to |
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return to normal |
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operation. |
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During Setup & Programming:
Pressing the UP or DOWN
buttons will modify the flashing
selection.
To adjust the
Clock or Day use
Press
MODE
Buttons.
To adjust the time by hours press and hold the FAN button while pressing the UP or DOWN buttons.
Page 3.2
SECTION 4
Basic Operation
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4 |
Section 4 Contents: |
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Programming for Auto or |
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Program Operation.................... |
4.2 |
Selecting the Proper |
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Operating Mode......................... |
4.3 |
Selecting Your Desired |
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Temperature............................... |
4.7 |
Note: During setup & programming pressing the UP or DOWN buttons will modify the flashing selection.
Page 4.1
Programmable or Non-Programmable
Thermostat
When the very simplest operation is desired, this thermostat
4may be configured to be non-programmable, with or without Auto-Changeover. Follow the step below.
If ‘NO’ is selected, the thermostat will lockout the Program On screen; only the Off, Heat, Cool, and Auto screens may be accessed by pressing the MODE button.
Select ‘YES’ if you would like your thermostat to be programmable, then the Program mode will be accessible through the use of the MODE button.
MODE |
Press the MODE button. While holding |
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the MODE, press the PROGRAM |
PROGRAM |
button to enter Setup screens. |
Note: Press the MODE button momentarily to move through the setup screens. Press and hold the MODE button to move backwards through the setup screens.
YES |
Y ES |
Program On Setup |
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1 |
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Select Yes if you would like |
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the thermostat to be program- |
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mable or No for non-program- |
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mable. |
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Press |
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NO |
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PROGRAM |
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Press the PROGRAM button to leave the Setup screens. If no buttons are pressed, the display will leave the setup screens after 30 seconds.
Page 4.2
Manual or Auto-Changeover
Thermostat
When the very simplest operation is desired, this thermostat may
be configured to be a manual heat and cool thermostat, with or 4 without time period programmability. Follow the step below.
The thermostat may be programmed to function as a Heat Only or Cool Only thermostat by selecting ‘NO’ in the setup screen below. This will lockout the Auto-Changeover screen and only allow the Off, Heat, Cool, and Program On screens to be accessed.
MODE
PROGRAM
MODE
Press the MODE button. While holding the MODE, press the PROGRAM button to enter Setup screens.
Press the MODE button repeatedly until this setup screen appears.
Note: Press the MODE button momentarily to move through the setup screens. Press and hold the MODE button to move backwards through the setup screens.
YES
Select Yes if you would like the thermostat to be Auto-Changeover or No for a Heat Only and Cool Only Thermostat.
NO
Y ES |
Setup |
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2 |
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AUTO |
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Press |
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PROGRAM |
Press the PROGRAM button to leave the Setup screens. If no buttons are pressed, the display will leave the setup screens after 30 seconds.
Page 4.3
Operating Mode when the Thermostat is Configured to be:
NON-PROGRAMMABLE WITH MANUAL CHANGEOVER - If the thermostat is configured to be a non-programmable thermostat with 4 Manual Changeover, the following screens will be available by
pressing the MODE button.
Select the Mode by Pressing the MODE Button
Heating Only
The HEAT setting indicates the temperature the room has to reach before the furnace will turn on to heat the room.
Cooling Only
The COOL setting indicates the temperature the room has to reach before the air conditioner will turn on to cool the room.
Off
OFF indicates both heating and air conditioning systems are turned off.
12:00 Pm |
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Su |
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70 |
HEAT |
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68 |
Press |
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12:00 Pm |
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MODE |
76 |
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Su |
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70 |
COOL |
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Press |
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12:00 Pm |
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MODE |
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Su |
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OFF 70 |
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Page 4.4
Operating Mode when the Thermostat is Configured to be:
NON-PROGRAMMABLE WITH AUTO-CHANGEOVER - If the thermostat is configured to be a non-programmable thermostat
with Auto-Changeover, the following screens will be available by 4 pressing the MODE button
Select the Mode by Pressing the MODE Button
Heating Only
The HEAT setting indicates the temperature the room has to reach before the furnace will turn on to heat the room.
Cooling Only
The COOL setting indicates the temperature the room has to reach before the air conditioner will turn on to cool the room.
Heating or Cooling
AUTO will automatically select heat or cool based on room temperature demand.
Off
OFF indicates both heating and air conditioning systems are turned off.
12:00 Pm |
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Su |
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70 |
HEAT |
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68 |
Press |
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12:00 Pm |
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MODE |
76 |
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Su |
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70 |
COOL |
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Press |
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12:00 Pm |
76 |
MODE |
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Su |
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AUTO |
COOL |
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70 |
HEAT |
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68 |
Press |
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12:00 Pm |
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MODE |
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Su |
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OFF 70 |
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Page 4.5
Operating Mode when the Thermostat is Configured to be:
PROGRAMMABLE WITH MANUAL CHANGEOVER - If the thermostat is configured to be a programmable thermostat with Manual Changeover, the
4 following screens will be available by pressing the MODE button.
Select the Mode by Pressing the MODE Button
Heating Only |
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12:00 Pm |
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Su |
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The HEAT setting indicates the |
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70 68 |
temperature the room has to |
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reach before the furnace will |
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HEAT |
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turn on to heat the room. |
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Cooling Only |
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12:00 Pm |
76 |
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Su |
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The COOL setting indicates the |
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COOL |
temperature the room has to |
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70 |
reach before the air conditioner |
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will turn on to cool the room. |
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Time Schedule |
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12:00 Pm |
Program On |
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for Heating |
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Su |
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The HEAT Program On setting |
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will activate the time period |
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program for the heating |
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occupied |
HEAT |
setpoint ONLY (occupied or |
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70 68 |
unoccupied periods). |
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Time Schedule |
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12:00 Pm |
Program On |
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for Cooling |
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Su |
76 |
The COOL Program On setting |
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COOL |
will activate the time period |
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70 |
program for the cooling |
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occupied |
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setpoint ONLY (occupied or |
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unoccupied periods). |
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Off
OFF indicates both heating and air conditioning systems are turned off.
12:00 Pm
Su
OFF 70
Page 4.6
Press
MODE
Press
MODE
Press
MODE
Press
MODE
Operating Mode when the Thermostat is Configured to be:
PROGRAMMABLE WITH Auto-Changeover - If the thermostat is configured to be a programmable thermostat with Auto-Changeover,
the following screens will be available by pressing the MODE button. 4
Select the Mode by Pressing the MODE Button
Heating Only |
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12:00 Pm |
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Su |
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The HEAT setting indicates the |
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70 68 |
temperature the room has to |
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reach before the furnace will |
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HEAT |
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turn on to heat the room. |
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Cooling Only |
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12:00 Pm |
76 |
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Su |
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The COOL setting indicates the |
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COOL |
temperature the room has to |
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70 |
reach before the air conditioner |
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will turn on to cool the room. |
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Heating or Cooling |
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12:00 Pm |
76 |
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Su |
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AUTO will automatically select |
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AUTO |
COOL |
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heat or cool based on room |
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HEAT |
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temperature demand. |
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70 68 |
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Time Schedule for |
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Heating or Cooling |
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12:00 Pm |
Program On |
Program On will activate the |
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Su |
76 |
time period program for the |
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COOL |
heating and cooling |
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occupied |
70 68 |
setpoints. (occupied or |
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HEAT |
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unoccupied periods) |
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Off
OFF indicates both heating and air conditioning systems are turned off.
12:00 Pm
Su
OFF 70
Page 4.7
Press
MODE
Press
MODE
Press
MODE
Press
MODE
Selecting Your Desired Temperature (adjusting setpoints)
AUTO OR PROGRAM MODE
Pressing the UP or DOWN buttons in Auto or Program
4modes will adjust both the heat and cool set temperatures simultaneously. For more information on this see page 13.2.
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Adjust the desired |
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12:00 Pm |
set temperature with the |
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76 |
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Su |
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COOL |
AUTO
70 HEAT
68
buttons.
HEAT OR COOL MODE
Pressing the UP or DOWN buttons in Heat or Cool modes will adjust only the heat or cool set temperature.
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Adjust the desired |
12:00 Pm |
set temperature with the |
Su |
76 |
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COOL |
70
buttons.
Note: Due to the Random Start feature (see page 16.4) there will be a 2 to 30 second delay before heating or cooling may be energized. This delay helps to keep multiple thermostats from energizing their outputs at the same time after a power outage.
Page 4.8
SECTION 5
Viewing the Temperature and Humidity Sensors
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5 |
Section 5 Contents: |
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Viewing the Outdoor |
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Temperature.............................. |
5.2 |
Viewing the Indoor |
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Humidity.................................... |
5.3 |
Page 5.1
Viewing the Outdoor Temperature
Requires an outdoor sensor (optional accessory) to be installed (see page 15.2 for wiring instructions). To read the temperature from the outdoor sensor, press the PROGRAM and HOLIDAY buttons. The display will then show the current outdoor temperature along with the
5 highest and lowest temperatures for the day.
PROGRAM HOLIDAY
OUTDOOR
Press the PROGRAM
button. While holding PROGRAM, press the HOLIDAY button to view the Outdoor temperature.
The highest and lowest |
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HI 92 |
High temperature |
temperatures for the day |
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for the day. |
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will be displayed along |
83 |
Outside |
Current outdoor |
with the current outdoor |
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temperature. |
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temperature. |
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This reading is from the |
LO |
Low temperature |
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sensor connected to RS2. |
68 |
for the day. |
Press the PROGRAM
PROGRAM HOLIDAY button. While holding 
OUTDOOR
PROGRAM, press the HOLIDAY button to leave the Outdoor temperature screen.
Note: If no sensors are connected 2 dashes [- -] will appear.
Page 5.2
Viewing the Indoor Humidity
Requires the Humidity Module (optional accessory) to be |
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installed. To display the current humidity at the thermostat, |
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press the HUMIDITY button. The display will then show the |
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current indoor humidity along with the humidification setpoint |
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(Section 9). |
5 |
Note: The humidity reading will not appear unless the Humidity Module has been installed. If the Humidity Module has not been installed dashes will appear in place of the humidity reading.
To view the indoor humidity
HUMIDITY
reading, press the HUMIDITY button
Current Room Humidity |
40 |
Setup |
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Humidify |
1 |
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0 rh
Press the HUMIDITY button again to return the display to normal operation.
Press
HUMIDITY
NOTE: Due to variations in environmental conditions, it is not always possible to achieve the desired humidification or dehumidification setpoint.
Page 5.3
SECTION 6
Programming the Daily Schedule
Section 6 Contents:
6 |
Programming a Daily |
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Schedule................................... |
6.2 |
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Overriding the Daily |
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Schedule................................... |
6.6 |
Page 6.1
Programming a Daily Schedule
Press |
Press the PROGRAM button to enter time period programming. |
PROGRAM |
Use the Programming Worksheet on the back cover to help with this section.
Select the maximum # of occupied periods to be used on any one day. Typically most installations use only Occupied 1.
(1,2 or 3)
occupied 1
6
Press
MODE
Adjust the cooling |
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setpoint for Occupied 1. |
occupied |
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(35 - 99, OF ) |
1 |
Adjust the heating
setpoint for Occupied 1.
occupied
(OF, 35 - 99 ) |
1 |
Adjust the cooling setpoint for unoccupied
periods.
Unoccupied
(35 - 99, OF )
74 
COOL
Press
MODE
74 
COOL
HEAT
72 Press
MODE
85
COOL
Press
MODE
Continued
Page 6.2
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