Lux Products GEOx User manual

Operating Instructions
TABLE OF CONTENTS
Everyday Use
1. Adjusting Temperature .................................................................................3
2. Adjusting System Mode and Fan Mode..................................................4
3. Adjusting and Setting Schedules..............................................................5
4. Adjusting Relative Humidity Set-Point ...................................................7
Custom Settings
5. Network ..............................................................................................................8
6. Display.................................................................................................................8
7. System.................................................................................................................9
8. Humidification / De-Humidification.......................................................10
9. About-Device / About-Network ............................................................. 13
10. LCD Display Icon Reference...................................................................... 14
x
Smart thermostat
with Humidification/De-humidification control
Enter/Confirm
Back/Cancel
Scroll
Right = Increase
Left = Decrease

LUX GEOx OPERATING INSTRUCTIONS | 2
A: Keypad Lock
B: Auto-changeover
C: Current System Mode
D: Active System Process
E: Fan Status
F: Wifi Connection Status
G: Current Schedule Period
H: Current Set Temperature
I: Ambient Temperature
J: Relative Humidity
K: Humidification Mode
L: Current Time
M: External Temperature
N: Current Date
HEAT
DAY 74°F
50%RH
12:00PM
72
EXT 68°F
THU 09/15
°F
H
J
L
G
I
K
A B C D E F
H
M
N

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Everyday Use: ADJUSTING TEMPERATURE
• Rotate the wheel clockwise to increase the set temperature.
• Rotate the wheel counter-clockwise to decrease the set
temperature.
OVERRIDE
HEAT
71°F
72
COOL
73°F
FOR: 01HR 45MINS
°F
HOLD
HEAT
71°F
COOL
73°F
°F
72
Once you reach your desired
set temperature, press to
override the set temperature.
You will then be prompted to
select an override period—
rotate the wheel to select a
hold time for the override
temperature.
If you have not yet set a
schedule, it will hold this new
temperature indefinitely.

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Everyday Use: System MODE and FAN Settings
Press to open the main menu,
and select MODE.
Press once to move back to
the previous screen.
Press and hold for 5 seconds
to return all the way back to
the Home screen.
There are three selectable mode settings for your system:
• Auto: GEOx will automatically activate your cooling or heating system
to maintain a temperature within a given range.
• Heat: GEOx will automatically activate your heating system to keep
your temperature above a certain set point.
• Cool: GEOx will automatically activate your cooling system to keep
your temperature below a certain set point.
Press to open the main menu.
Highlight mode and press .
Rotate the wheel to select your
desired system mode and press
to confirm.

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To adjust your fan settings,
open the main menu by
pressing .
Highlight fan and press to
confirm.
Select your desired fan setting
and press to confirm.
You can also set a countdown
timer for your filter in this
menu by highlighting filter,
pressing to confirm, and
rotating the wheel to select
your filter’s remaining lifespan.
FAN Settings
There are three selectable mode settings for your fan (if present):
• AUTO: thermostat gives fan control to the heat/cool equipment, and
the fan only runs as needed during heat or cool operation.
• ON: the thermostat will run the system fan continuously at all times,
even if there is no call for heating or cooling.
• CLEAN CYCLE: the thermostat will run the system fan for 18 minutes
per hour, in three 20 minute segments (6 minutes on and 14 minutes
o, per segment).

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Everyday Use: ADJUSTING & SETTING SCHEDULES
• Set a schedule quickly and
easily using the LUX App.
• Create a new schedule by
following the on-screen
prompts in the app and
selecting your preferences.
• Adjust your set schedule by
tapping the “calendar” icon
and moving the sliders to
your preferred settings.
• Tap the snowflake/flame icon
in the top-right to switch to
your heat or cool schedule.
If you are not connected to WiFi or if you do not have the LUX app,
you can create and change a schedule on the GEOx device.
Highlight the “Schedule” menu
and select it by pressing .
If you do not want to follow
a scheduled routine, you can
choose “Hold Constant” to
maintain a single temperature.
Highlight “Heat Schedule” or
“Cool Schedule” and press .
Follow the on-screen prompts
to set your schedule. You may
set custom schedules for each
day of the week and you may
set a schedule using either 2
or 4 time periods for each day.

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Everyday Use: ADJUSTING RELATIVE HUMIDITY
Everyday Use: RUNTIME
Your GEOx has many output terminals, and gives you a detailed
view of how much each of these terminals has run, in Hours and
Minutes.
This screen shows a cumulative total of runtime and these numbers
cannot be reset without performing a full reset of the thermostat to
factory defaults (not recommended).
Press to open the main menu.
Highlight “Rel Humidity” and
select it by pressing . If you are
in “humidify” or “dehumidify”
mode, you can now rotate the
wheel to adjust your relative
humidity setting. Confirm your
new settings by pressing .
For more information about humidity options, settings and wiring
connections, view the humidity section detailed in the SYSTEM
SETTINGS section.

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If you are not connected to
wifi or if you do not have the
LUX app, you can create and
change a schedule on the
GEOx device.
Press to open the main menu.
Custom Settings: NETWORK
Custom Settings: Display
If your GEOx thermostat is
not currently connected to a
WiFi network, please select
“Configure USING APP” in the
Network page
The thermostat will begin the WiFi joining process. To connect to
a WiFi network, download the LUX Products app from the iOS App
Store or the Google Play Store. Launch the LUX app, create an
account, and log into the app.
Once in the app, add a new thermostat by selecting the “+” at the
top left corner of the app screen. The mobile app and thermostat
screens will guide you through the WiFi joining process.
Backlight:
Settings to adjust the duration of the display screen lighting, either
“O”, or from 5 to 15 seconds, or “Always On” (only observed by
the thermostat when powered by 24 VAC System Power, or 5 VDC
Micro USB).
Format:
Time options include 12HR (AM/PM) or 24HR (Military Time).
Date options include the visual order of how the date is displayed.
Temperature scale can be selected between degrees F/C.
MENU ITEM: SETTINGS

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If you are not connected to
wifi or if you do not have the
LUX app, you can create and
change a schedule on the
GEOx device.
Press to open the main menu.
Custom Settings: System
Set System:
These setting are used to configure the thermostat for your heating
and/or cooling equipment.
Available Mode, System Type (equipment):
Choose each item in the following screens as appropriate for the
equipment present in your system:
Stage-1 Swing:
This setting adjusts wide or narrow the temperature control feels.
In most cases, the factory default of 0.25F works well.
No. of Stages:
The choices available will dier slightly depending upon the
equipment you have selected in the previous screens. Select as
appropriate for each individual system type.
Stage-2 Oset:
These settings (if multiple stages are used) determine how much
the room temperature can sag from the target set temperature,
before the additional stages are applied.
Language:
At this time, only English is oered within the thermostat display.
Orientation:
This setting permits rotation of the entire display screen 90 degrees, to
accommodate either Vertical or Horizontal mounting methods.

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If you are not connected to
wifi or if you do not have the
LUX app, you can create and
change a schedule on the
GEOx device.
Press to open the main menu.
Valve Type (heat pump system type only):
This setting determines the switching style for the shared O/B
terminal. When set to “O” this pin is energized at all times while
in cool mode, and when set to “B” this pin is energized at all times
while in heat mode.
AUX Oset (heat pump system type only):
When supplemental auxiliary heating is present with a heat pump,
this setting determines how much the room temperature can
decrease before calling for the supplemental heat source.
Temp Limits:
These are limits for how high or low the user can adjust the heating
or cooling set point, and are separately adjustable and flexible for
both modes of operation.
Minimum Run:
ON Time sets the amount of time load-on event must remain on,
to prevent short-cycling. OFF Time is how long the equipment
remains o between cycles. SUSPEND prevents all delays for
10 minutes, so the system can be called for right away for
testing purposes. After 10 minutes, all delays return to normal
automatically.
De/Humidifier:
OFF:
There are no RH% humidification or de-humidification control
actions performed.
DE-HUMID:
• De-Humid No Fan: this is for a separate dehumidification device
that does not require the system’s blower fan to run during a call
for dehumidification.
• De-Humid W/Fan: this is for a separate dehumidification device

LUX GEOx OPERATING INSTRUCTIONS | 11
which requires the system’s blower fan to run during a call for
dehumidification.
• Cooling: this uses the air conditioning components in a flexible
manner to try and achieve the target RH% set point without separate
dehumidification equipment. This option provides a setting on the
next screen which permits intentional “over-cooling” beyond the cool
mode set temperature, if the dehumidification RH% setpoint has not
been reached. This setting allows up to 15F degrees of over-cooling.
Dehumidification RH% setpoint range is from 40% to 80%
HUMID:
This is for controlling an in-duct humidifier, either powered with its own
separate power source or the existing system’s 24 VAC transformer (see
wiring options below).
Humidification RH% setpoint range is from 10% to 60%.
AUTO-HUMID:
This is for controlling the same equipment as HUMID (above), however
the RH% setpoint is not directly adjustable by the user. The RH%
setpoint is automatically adjusted and controlled with a sliding scale
based upon present outdoor temperature.
OUTDOOR TEMPERATURE RH% SETPOINT
Less than –20F 15%
Between –20F and –10F 20%
Between –10F and 0F 25%
Between 0F and 10F 30%
Between 10F and 20F 35%
Greater than 20F 40%

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Humidification / De-Humidification Wiring Options
120VOLT TRANSFORMER
24VAC
120VAC
L1
RH C U U
N
R (+) C (-)
GEOx
ADD
(Installer-provided)
Jumper Wire
+ + + +
DE-HUMIDIFIER
HUMIDIFIER
24VAC
120VAC
L1
RH C U U
N
R (+) C (-)
DE-HUMIDIFIER
HUMIDIFIER
GEOx
+ + + +
THIS DIAGRAM IS
FOR CONTROL OF
HUMIDIFIERS AND
DE-HUMIDIFIERS
THAT SHARE
THE SAME 24V
TRANSFORMER
OF THE HEATING /
COOLING SYSTEM
FOR ACTIVATION.
THIS DIAGRAM IS
FOR CONTROL OF
HUMIDIFIERS AND
DE-HUMIDIFIERS
THAT CONTAIN
THEIR OWN 24V
TRANSFORMER
FOR ACTIVATION.

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Custom Settings: About-Device, and About-Network
Custom Settings: Time and Date
About – Device:
This page shows the thermostat model, specific software versions
installed, and the unique device ID of the thermostat, which will be
needed for technical support.
About – Network:
This page shows the name of the WiFi network that the thermostat
is connected to, the network status, IP Address the thermostat has
been assigned by your router, and the date/time of the most recent
communication between the thermostat and the online server.
before the additional stages are applied.
NOTE: This item will not be shown if the thermostat is connected
online, as time will be set by the online server, including automatic
Daylight Savings Time adjustments.
When not connected to a WiFi network, the Year, Month, Day, and
Clock Time can all be adjusted manually.
Calibration:
This allows the user to manually correct for any error in the
perceived room temperature that is displayed, and can also be
used to synchronize multiple thermostats within the same home.
Calibration can be set from -9F to +9F degrees from the default of
0F degrees of adjustment.

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Appendix: LCD Display Icon Reference
The following are thermostat screen icons that may be shown under
various conditions or modes:
Heat, Min-O
Protection
Clean Cycle
ON
Cool, Min-O
Protection
WiFi, No Platform
(Internet Problem)
Heat, Stage-2
Running
WiFi,
Mid Signal
Cool, Stage-2
Running
Heat, Stage-1
Running
WiFi,
OK
Cool, Stage-1
Running
WiFi, No Network
(Router Problem)
Heat Pump,
AUX Heat Running
WiFi,
Low Signal
Fan
ON
Locked,
(Level-2)
Locked,
(Level-1)

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DR Event,
Cool O
IAQ Event
(Indoor Air Quality)
Display,
Degrees “C”
Value,
Percentage
Filter Limit
Reached
Display,
Degrees “F”
Auto
Change-Over
DR Event,
Heat OFF