Venstar T4975-IAQ Mode d'emploi
DIGITAL THERMOSTAT
IAQ
Owner’s Manual and
Installation Instructions
Up to 2 Heat & 4 Cool Stages
With Air Patrol, Humidity Control,
& Light Activation
COMMERCIAL
T4975-IAQ
Follow the Installation Instructions before proceeding. Set the
thermostat mode to “OFF” prior to changing settings in setup
or restoring Factory Defaults.
CAUTIO
N
This Explorer thermostat has the ability to receive updates to its rmware.
Periodic rmware updates are released by the manufacturer to add features and/
or performance enhancements. This manual was produced reecting the most
current rmware/feature set at the time of publication, rmware rev. 5.00. Firmware
releases after rev. 5.00 may not be adequately depicted in this manual.
FCC Compliance Statement
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.
Changes or modications not expressly approved by Venstar could void the user’s
authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined
by turning the equipment o and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit dierent from that to which the
receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help
Innovation, Science and Economic Development Canada
ICES-003 Compliance Label: CAN ICES-3 (B)/NM8-3(B)
This device contains licence-exempt transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the
following two conditions:
1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause
undesired operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est
conforme aux CNR d’Innovation, Sciences et Développement économique Canada
applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux
deux conditions suivantes :
1. L’appareil ne doit pas produire de brouillage;
2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d’en compromettre le fonctionnement
FCC ID : MUH-SKYPORT14
IC: 12547A-SKYPORT14
Table of Contents
GLOSSARY OF TERMS ......................................................................................1
GET TO KNOW YOUR THERMOSTAT ...............................................................2
HOW TO USE YOUR THERMOSTAT..................................................................7
Selecting the Heat or Cool Mode ....................................................................7
Selecting your desired temperature ................................................................7
Using the Fan Button .......................................................................................7
Viewing Air Quality and Temperature Values...................................................8
Using the Override Button ...............................................................................9
Viewing only connected wi or VenNet sensor Values ...................................9
Viewing and adjusting humidity values ...........................................................9
Setting the Clock and Day .............................................................................10
Turning the schedule ON/OFF .......................................................................10
Programming a Schedule ..............................................................................10
AIR PATROL ......................................................................................................12
VENNET SENSORS...........................................................................................15
Pairing a sensor..............................................................................................15
Un-pairing a sensor........................................................................................16
Factory Defaulting a sensor...........................................................................16
SETUP STEPS
Program Mode (non-programmable or 7 day programmable) ....................17
Available Modes (heat only, cool only, heat/cool, auto) ..............................17
Backlight (on/o, intensity, nighttime dimming) ...........................................18
View equipment runtimes (lter, heat, cool, aux heat, UV, humidier) .........18
Set / Reset Service Filter ...............................................................................18
Heating and Cooling System Runtime ..........................................................19
Language (English, Spanish, French)............................................................20
Setpoint limits.................................................................................................21
*Equipment Timers and Heat/Cool spread ...................................................22
*Deadbands and Interstage Timers...............................................................23
*Minutes of Fan Purge....................................................................................24
*Using a wired remote sensor........................................................................25
*Which sensor to use for temperature control..............................................25
*Humidity settings ..........................................................................................26
*Fan O delay .................................................................................................26
Select Fahrenheit or Celsius..........................................................................27
Smart Recovery..............................................................................................27
*Dry Contact Input (polarity, use) ..................................................................28
*Humidify / Dehumidify Outputs ....................................................................29
*Light Activation .............................................................................................29
*Automated Demand Response ....................................................................30
Air Patrol (air quality range, fan runtime).......................................................32
*Skyport (on, o).............................................................................................32
*Local API (on,o)...........................................................................................32
Show Clock.....................................................................................................32
Show IAQ ........................................................................................................32
Clear all messages .........................................................................................32
LOCKING/UNLOCKING THE BUTTONS .........................................................33
HOLIDAY............................................................................................................34
CALIBRATION ...................................................................................................35
RESTORING FACTORY DEFAULT SETTINGS ................................................36
TEST OUTPUTS AND CALIBRATE TEMPERATURE SENSOR ......................37
INSTALLATION INSTRUCTIONS......................................................................38
TECHNICIAN SETUP ........................................................................................44
TROUBLESHOOTING .......................................................................................45
ADVANCED SETUP TABLE .............................................................................46
WARRANTY.......................................................................................................49
*Some of the settings are usually adjusted by the installer. It is acceptable to
have any of these steps be adjusted by the user as well. Contact Venstar if you
have further questions on the meaning of these settings
1
Glossary of Terms
Air Patrol: Feature that turns on the fan when measured air quality is below
what is desired.
Auto-Changeover: A mode in which the thermostat will turn on the heating or
cooling based on room temperature demand.
Cool Setpoint: The warmest temperature that the space should rise to before
cooling is turned on (without regard to deadband).
Deadband: The number of degrees the thermostat will wait, once a setpoint
has been reached, before energizing heating or cooling.
Dehumidify: To reduce the amount of moisture in the air.
Differential: The forced temperature dierence 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 regard 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. O, Heat, Cool,
Auto).
Non-Programmable Thermostat: A thermostat that does not have the
capability of running Time Period Programming.
Override: During programmed unoccupied periods, pressing the Override
button will force the thermostat into occupied settings. During programmed
occupied periods, pressing the Override button will force the thermostat
into unoccupied settings.
Programmable Thermostat: A thermostat that has the capability of running
Time Period Programming.
Reheat: Running the cooling and 2nd stage strip heaters at the same time
in order to dehumidify the air without signicantly 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 the day.
2
Backlit, Scrolling Display
Backlit Cooler & Warmer
Buttons
Backlit LCD Display
Override Button
Heat or Cool
Demand Indicator
Red = Heat, Green = Cool
Setup Buttons Behind Door
Get To Know Your Thermostat
3
Setup Buttons
Get To Know Your Thermostat
4
Get To Know Your Thermostat
Display Features
Note :You may see 2nd/3rd illuminated even though you don’t have actual
multistage equipment. This has NO EFFECT on your primary heating or
cooling - it will run whether or not you see 2nd/3rd on the display
1Clock with Day of the Week—Indicates the current time and day.
This clock is also used to program the time period schedules.
2Outdoor icon—Indicates the temperature displayed is from the
optional outdoor sensor or public weather from Skyport.
3Room Temperature Display—Indicates the current room
temperature and displays the outdoor temperature when selected.
4Mode Indicators
Selects the operational mode of the equipment.
HEAT - Indicates the heating mode.
COOL - Indicates the air conditioning mode.*
HEAT & COOL - Indicates the system will automatically
change-over between heat and cool modes as the
temperature varies.
OFF - Indicates heating and cooling are turned off.
5The scrolling display will be used to help you easily navigate
the setup screens in the thermostat.
* COOL will blink when cooling is running for dehumidifcation
HI
Lo
Program
Unoccupied123
ONOFF
Outdoor
Fan On
A
UX
H
EAT
Override
Setup Step
2nd3rd
Stage
Am
Pm
18:88
188
188
88
188
1
2
3
4
5
5
Display Features
6 2nd and 3rd Stage icons
Indicates what stage of cooling or heating is currently energized.
Note: ‘3rd’ and ‘COOL’ will both blink when the 4th stage of
cooling is active.
7 Setup Step icon
Indicates the step number when in advanced setup.
8 Occupied & Unoccupied icons
Indicates the program number: Occupied 1, 2, 3 or Unoccupied
9 Desired SetTemperature
Indicates desired room temperature(s). Also displays
the highest and lowest temperatures for the day.
10 Wi-Fi icons
One dot will always be present and the full wifi icon will appear
when connected to the local access point. The dot will blink
when the thermostat is reaching the skyport server.
11 icon
Press MODE, WARMER and COOLER buttons together to
toggle the keylock.
Get To Know Your Thermostat
HI
Lo
Program
Unoccupied123
ONOFF
Outdoor
Fan On
A
UX
H
EAT
Override
Setup Step
2nd3rd
Stage
Am
Pm
18:88
188
188
88
188
7
6 8
9
11
10
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