Control4 C4THERM User Manual
Thermostat with Humidity
or Ventilation Control
User Guide
™
™
Disclaimer
Control4® makes no representations or warranties with respect to any Control4 hardware, software, or the contents or use of this
publication, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose.
Control4 reserves the right to make changes to any and all parts of Control4 hardware, software, and this publication at any time,
without any obligation to notify any person or entity of such changes.
Trademarks
©2014 Control4. All rights reserved. All rights reserved. Control4, the Control4 logo, the Control4 iQ logo and the Control4
certified logo are registered trademarks or trademarks of Control4 Corporation in the United States and/or other countries. All
other names and brands may be claimed as the property of their respective owners. Pricing and specifications are subject to
change without notice.
Warranty
Control4 Corporation
11734 S. Election Road, Suite 200
Salt Lake City, UT 84020 USA
http://www.control4.com
Thermostat with Humidity or Ventilation Control User Guide
Part Number: 90-1883 Rev A, 3/26/2014
Model Number: C4-THERM-WH
For complete warranty information, including details on consumer legal rights as well as warranty exclusions, visit
www.control4.com/warranty, or refer to the Thermostat with Humidity or Ventilation Control User Guide on the Control4 website,
Resources > Documentation page at http://www.control4.com/residential/products/resources/.
ii
Contents
About your new thermostat ................................................1
Supported model ........................................................1
Important safety instructions ..............................................1
Thermostat features ......................................................1
Quick reference to controls and display ....................................1
Operation ............................................................... 2
Select system mode (Em Heat/ Heat /O /Cool /Auto) ...................... 2
Change temperature set point ............................................ 2
Select fan setting (On/Auto /Circ) ........................................ 2
Maintenance reminders .................................................. 2
Screen lockout ..........................................................2
Power and battery replacement .......................................... 3
Indoor Air Quality functions ............................................... 3
Event-Based™ air cleaning ................................................ 3
Humidifier control .......................................................3
Automatic mode .................................................. 3
Manual mode ...................................................... 4
Dehumidifier control .....................................................4
If dehumidification is installed .......................................4
If dehumidification is done with the air conditioner ...................4
Fresh air ................................................................ 5
Program schedule and holds ...............................................5
Understanding program schedules ........................................ 5
Progressive recovery .................................................... 5
Program schedule holds
2 Hour ............................................................ 5
Permanent ........................................................ 5
Next Event ........................................................6
Timed ............................................................ 6
iii
Quick reference to controls and display
Control4 thermostat with humidity or ventilation control
User guide
Supported model
C4-THERM-WH Thermostat—White
Important safety instructions
Warning! Install in accordance with all national and
local electrical codes.
Warning! This product is not intended for use with
line-voltage baseboard heaters.
Important: Improper use or installation can cause
loss/damage of property.
Important: Operate within the limits of this device as
specified in this Thermostat with Humidity or Ventilation
Control User Guide and Thermostat with Humidity or
Ventilation Control Safety and Installation Instructions.
Important: Using this product in a manner other than
outlined in this document voids your warranty. Further,
Control4 is not liable for any damage incurred with the
misuse of this product. See the warranty information
in the Thermostat with Humidity or Ventilation Control
User Guide or on the Control4 website at
www.control4.com/warranty.
Quick reference to controls and display
Home screen
Low battery indicator
Message center Indoor Air Quality settingCurrent indoor temperature
Thermostat features
• Up to 4 stage heat and 2 stage cool operation.
• Indoor air quality control.
• Humidification (automatic or manual control).
• Dehumidification.
• Event-Based™ air cleaning.
• Ventilation with temperature and humidity limits.
• Temperature control.
• Message center provides feedback and instructions.
• Dual power option (24VAC or battery).
• Programmable fan control with fan circulation mode.
• Easy-to-use temperature control can override program
schedule at any time.
• Progressive recovery ensures proper temperature at the
start of a program event.
• Built-in compressor protection prevents damage to your
equipment.
• System test mode.
Temperature setting
Radio signal
strength indicator
Equipment status
System Mode setting
Hold status
System Mode button Hold button Fan Mode button
Note: Backlight is activated with the first button press and automatically turns o.
Indoor Air Quality button
(optional)
Setpoint Adjust buttons
Presets button
Fan Mode setting
1
Operation
Operation
Select system mode
(Em Heat/Heat /O/Cool/Auto)
Press button to select:
Em Heat: (only for heat pumps with auxiliary heat) Thermostat
controls auxiliary heat. Heat pump will not operate in Em Heat
mode.
Heat: Thermostat controls only the heating system.
O: Heating and cooling systems are o.
Cool: Thermostat controls only the cooling system.
Auto: (if enabled in installer setup) Thermostat automatically
selects heating or cooling depending on the indoor temperature.
The current system mode selection will flash. After 7 seconds
without any button presses, the selected system mode will be
accepted by the thermostat.
Change temperature set point
Press or buttons to adjust the current set point.
Select fan setting (On/Auto/Circ)
When the fan mode is changed during a program event it
remains in that mode until the next event starts. The fan must
be programmed to FAN ON in the schedule to run continuously
through all events.
Press
On: Fan runs continuously. Use this mode for maximum air
circulation/filtering.
Auto: Fan runs only when the heating or cooling system is on.
Circ: Same as Auto, but ensures the fan is on for at least 30
minutes per hour. Use this mode for a balance of energy savings
and air circulation/cleaning.
The current fan selection will flash. After 7 seconds without any
button presses, the selected fan mode will be accepted by the
thermostat.
button to select:
Maintenance reminders
Maintenance reminders are set up by the installer to indicate
when the equipment is due for service. If a maintenance reminder
is displayed, call your HVAC dealer for service. They can be
cleared by setting the system mode to o and then holding the
button continuously for 5 seconds. Press and select Ye s
to Service Reminders and then press button (Next). Press
and buttons to select Yes for each reminder you would like
to reset. Press button (Next) to go to the next reminder or
button (Back) to go to a previous reminder. Press button
(Done) to reset the selected service reminders.
Screen lockout
Certain features of the thermostat can be locked so that changes
at the thermostat are not allowed. This feature can be overridden
by pressing and holding button for 5 seconds.
2
Indoor Air Quality functions
Power and battery replacement
This thermostat can be AC powered, battery powered, or both
(to provide backup power for communication with the Control4
system). The thermostat uses four alkaline AA batteries.
The thermostat has a memory backup that saves the thermostat
settings in case of a power interruption. The system settings will
be retained, but the clock resets after both battery and AC power
are removed. Clock synchronization comes from the connection
to the Control4 system. To access the batteries for replacement,
remove the bezel as shown.
Indoor Air Quality functions
Event-Based™ air cleaning
If installed, air cleaning can be controlled through the Control4
system. Air cleaning will activate the fan for the purpose of air
cleaning and can operate in five dierent modes as defined on
this page.
O: The air cleaner will not call the fan for the purpose of air
cleaning.
Note: If air cleaning is installed, air cleaning will still
occur during normal fan operation during heating,
cooling or other indoor air quality events.
Constant Clean: This option will provide the maximum amount of
air cleaning available. The air cleaner will be active for 24 hours a
day, seven days a week.
Automatic: The air cleaner will run a minimum of 30 minutes
every hour. The air cleaner will monitor the amount of time your
heating and cooling system runs; if 30 minutes is not reached
the air cleaner will automatically turn on. This will maximize the
amount of air cleaning while minimizing energy consumption.
Event Clean (3 hour cycle): When selected, the air cleaner
will run for 3 hours continuously and then return to the most
recent mode of O, Automatic, or Constant Clean. This option
only cleans the air when needed; an example would be after
vacuuming.
Allergies (24 hour cycle): When seasonal allergies spike and
outside air quality is at its worst, choose this option. Your air
cleaner will run continuously for 24 hours, then return to the most
recent mode of O, Automatic, or Constant Clean.
Note: The thermostat will manage fan and air cleaning
selections when the selections overlap.
Humidifier control
If humidification is installed it can be controlled in two modes,
automatic or manual.
Press button to select Humidify and enter the Humidifier
Control screen.
Automatic or manual mode is configured by the installer. To
determine which mode the thermostat is set to, see the diagrams
on pages 3 and 4.
In automatic mode you will receive the optimum amount of
humidity so that your home and its furnishings are protected
from the damaging eects of excess condensation or low
humidity during heating season. The thermostat automatically
adjusts your home’s relative humidity based on the outdoor
temperature.
The humidity setting needs to be set initially to meet your
home’s conditions. Follow these steps when adjusting your
thermostat.
1 Adjust the humidity setting to “3” which is within normal
range. During the next 24-48 hours it may be necessary to
adjust the setting for more or less humidity, depending on
your personal comfort and home’s requirements.
2 During the coldest portion of the first heating season, minor
adjustments may be necessary. This is dependent upon your
home’s construction.
The relative humidity in your home will now be accurately
controlled to meet your needs and should not need further
adjustment during future heating seasons.
Humidifier Control screen for humidification in automatic mode
Automatic mode:
indication of
humidification
setpoint level
Humidifier
adjustment
Humidification
setpoint
Done button
(exit Humidifier
Control)
3
Indoor Air Quality functions
In manual mode it is important to anticipate a drop in outdoor
temperature and reduce the setting accordingly to avoid
excessive condensation. Use the following table to determine the
proper relative humidity setting.
Outdoor temperature/indoor relative humidity
Outside temperature Recommended relative humidity
+50°F 50%
+40°F 45%
+30°F 40%
+20°F 35%
+10°F 30%
0°F 25%
-10°F 20%
-20°F 15%
Humidifier Control screen for humidification in manual mode
Manual mode:
screen cycles
recommended
humidification
setpoints for
various outdoor
temperatures
Humidifier
adjustment
Humidification
setpoint
Done button
(exit Humidifier
Control)
Dehumidifier control
If dehumidification is installed the thermostat can be configured,
through the installer set-up, to control dehumidification with
either a whole home dehumidifier or with the air conditioner
(cooling unit).
Press button to select Dehumidify and enter the
Dehumidifier Control screen.
The thermostat will allow you to set the desired humidity (%
relative humidity) level in your home and can be used to turn the
dehumidification On or O.
Use the dehumidification adjustment to set the dehumidification
setpoint to 60% when first installed. Allow dehumidification to
run until the initial setpoint is reached, before deciding if you
want to change the humidity setting.
Raise the setting if you prefer the air to be less dry; this will
reduce the amount of time that dehumidification runs.
Lower the setting if you prefer the air to be more dry; this will
increase the amount of time that dehumidification runs.
Your comfort is the best measure of how to adjust your setting.
When first installed, your dehumidifier has to remove all the
moisture that is initially in your home. The home acts like a
sponge so the moisture in the materials of your home is at the
same level as the air. After drying the air, the materials of the
home will release the moisture back into the air until they are
again at the same level. As a result, it is not uncommon for
dehumidification to operate for an extended period of time when
it is first installed.
Energy Saving Tip #1:
Adjust the setting to be as high as is comfortable to reduce
dehumidification run time – if it feels clammy or smells damp or
moldy lower the setting. To save energy, turn the dehumidifier
control OFF when you open your windows just as you would with
air conditioning.
Energy Saving Tip #2:
If vacating your home for an extended period in the summer, set
the relative humidity at 60% and set the cooling setpoint as high
as you are comfortable setting it to in cooling mode. Consult with
appropriate professionals regarding the highest temperature that
is safe for your pets or possessions. This will keep the humidity
at a controlled level to help prevent mold while minimizing the
amount of the cooling energy used.
Dehumidifier Control screen with only dehumidification installed
Dehumidifier
adjustment
Dehumidification
setpoint
Done button
(exit Dehumidifier
Control)
If dehumidification is done with the air conditioner, the
thermostat will cool up to 3°F beyond the cooling setpoint for
dehumidification. Note overcooling may not be sucient to meet
the dehumidification setpoint.
4
Program schedule and holds
Fresh Air
If ventilation is installed, Fresh Air can operate in four dierent
modes as defined on this page.
Press button to select Fresh Air and enter the Fresh Air
screen.
O: Ventilation will not run.
Automatic: Ventilation will cycle based on the parameters set by
the installer to meet your home’s ventilation requirements.
3 Hour Event: Ventilation will be constantly energized for 3
hours and then the fresh air mode will return to O or Automatic
depending on which was mode was most recently active. This
option is used when fresh air is needed. An example would be
after cooking.
24 Hour Event: Ventilation will be constantly energized for 24
hours and then the fresh air mode will return to O or Automatic
depending on which was mode was most recently active. This
option is used when a large amount of fresh air is desired. An
example would be a day with desirable outdoor conditions.
Program schedule and holds
Understanding program schedules
Setting the schedule for the thermostat is done at the Control4
system.
Progressive recovery
The Progressive Recovery feature allows the thermostat to
activate the heating and cooling equipment prior to a scheduled
event in order to reach the desired temperature at the start of
that scheduled event.
Example: If the Next Event time is 6 a.m., and the temperature is
70°, the heat will come on before 6 a.m., so the temperature is
70° by 6 a.m.
Program schedule holds
Press button to initiate a Next Event, 2 Hour or Permanent
hold. All options will be displayed and the current hold selection
will flash.
Fresh Air screen
Fresh Air mode
selection
Fresh Air mode
adjustment
Done button
(save mode and
exit Fresh Air)
After 7 seconds without any button presses the selected hold
will be accepted by the thermostat. After the option of 2 Hour
if button is pressed again, no hold options will be displayed.
This indicates no hold option is to be selected and can be used to
cancel any active holds. Pressing button again will display all
hold options with Next Event selected.
While in Next Event, 2 Hour, or Permanent hold, the temperature
setting and fan mode can be adjusted and will stay at that setting
until the hold ends or is cancelled.
Next Event hold will override the temperature setting and fan
mode for the current schedule event and will remain active until
the next schedule event occurs.
2 Hour hold will override the temperature setting and fan mode
for the schedule events and will remain active for two hours from
the time the hold is initiated.
Permanent hold will override the temperature settings for all
events.
5
Program schedule and holds
Next Event hold
Press or buttons to immediately adjust the temperature
when the schedule is running. This will hold the temperature
setting until the next scheduled event.
A Next Event hold can also be initiated by pressing button and
selecting Next Event.
Timed hold
Timed hold can be set at the Control4 System.
6
™
™
control4.com | 888.400.4070
90-1883 3.14
Thermostat with Humidity or
Ventilation Control
Safety and Installation Instructions
Disclaimer
Control4® makes no representations or warranties with respect to any Control4 hardware, software, or
the contents or use of this publication, and specifically disclaims any express or implied warranties of
merchantability or fitness for any particular purpose. Control4 reserves the right to make changes to any
and all parts of Control4 hardware, software, and this publication at any time, without any obligation to
notify any person or entity of such changes.
Trademarks
©2014 Control4. All rights reserved. All rights reserved. Control4, the Control4 logo, the Control4 iQ logo
and the Control4 certified logo are registered trademarks or trademarks of Control4 Corporation in the
United States and/or other countries. All other names and brands may be claimed as the property of their
respective owners. Pricing and specifications are subject to change without notice.
Warranty
Control4 Corporation
11734 S. Election Road, Suite 200
Salt Lake City, UT 84020 USA
http://www.control4.com
Thermostat with Humidity or Ventilation Control Safety and Installation Instructions
Part Number: B2206227 Rev B, 2/15/2014
Model Number: C4-THERM-WH
For complete warranty information, including details on consumer legal rights as well as warranty
exclusions, visit www.control4.com/warranty, or refer to the Thermostat with Humidity or Ventilation
Control User Guide on the Control4 website, Resources > Documentation page at
http://www.control4.com/residential/products/resources/.
Contents
Supported model ..........................................................1
Important safety instructions ...............................................1
General description ....................................................... 2
Box contents .............................................................3
Supported systems .......................................................3
Installation ...............................................................4
Installation location recommendations .................................... 4
If replacing an existing thermostat ........................................5
Thermostat mounting ................................................... 6
Wiring terminal ......................................................... 7
Outdoor temperature sensor (included) ................................... 9
Remote temperature sensor (optional) ....................................11
Wiring diagrams ........................................................13
Conventional heat/cool single transformer ...........................13
Conventional heat/cool two transformers ............................13
Heat pump single transformer ......................................14
Heat pump two transformers .......................................14
Indoor Air Quality equipment—dehumidifier. . . . . . . . . . . . . . . . . . . . . . . . . .15
Indoor Air Quality equipment—humidifier ............................15
Indoor Air Quality equipment—ventilation ............................16
Power and battery replacement ..........................................17
iiiii
Supported model
Setup and testing ........................................................18
Equipment Type selection switch .........................................18
Installer Setup menu .....................................................19
Change system settings .................................................20
HVAC Installer system settings table ...................................21-25
Indoor Air Quality system settings tables .................................26
Air cleaning sytem settings table ...................................26
Humidifier system settings table ................................27-28
Dehumidifier system settings table .................................29
Ventilation system settings table ................................30-32
Climate map for ASHRAE Fresh Air Setup ................................33
Managing the ZigBee® network connection ...............................34
System Test menu ...................................................... 35
System Test tables ..................................................38-42
Quick reference to controls and display ....................................43
Troubleshooting .........................................................44
Error codes .............................................................47
Thermostat features .....................................................48
Specifications ...........................................................49
iv 1
Supported model
C4-THERM-WH Thermostat—White
Important safety instructions
Warning! Install in accordance with all national and local electrical codes.
Warning! This product is not intended for use with line-voltage
baseboard heaters.
Important: Improper use or installation can cause loss/damage of
property.
Important: Operate within the limits of this device as specified in this
Thermostat with Humidity or Ventilation Control Safety and Installation
Instructions and Thermostat with Humidity or Ventilation Control User
Guide.
Important: Using this product in a manner other than outlined in this
document voids your warranty. Further, Control4 is not liable for any
damage incurred with the misuse of this product. See the warranty
information in the Thermostat with Humidity or Ventilation Control User
Guide or on the Control4 website at
www.control4.com/warranty.
General description
Box contents
General description
This Control4® Thermostat enables intelligent HVAC and Indoor Air Quality
control as part of a Control4 automated system. This thermostat uses the ZigBee®
(802.15.4) wireless networking standard to communicate with the Control4 system.
The Control4 Thermostat features a backlit LCD that displays the temperature,
HVAC status, Indoor Air Quality control status, fan status, hold status, and HVAC
operating mode. The home screen allows temperature setpoint adjustments,
HVAC mode change, various hold options, fan control, and access to the Indoor
Air Quality control screens. The Indoor Air Quality control screens can be used to
control ventilation, humidification, or dehumidification. The thermostat can operate
as a stand-alone control if it loses communication with the Control4 system.
2 3
Box contents
• Thermostat
• Wired outdoor temperature sensor
• 4 AA batteries
• 2 screws
• 2 wall anchors
• Warranty card
• Control4 Thermostat with
Humidity or Ventilation Control
Safety and Installation Instructions
(this document)
Supported systems
• One or two stage conventional
heat/cool system
• One or two stage heat pump with
up to two stages of auxiliary or
emergency heat
• Optional heat only or cool only
operation
• Configurable for electric or fossil
fuel heating
• Millivolt heat
• Hydronic heat
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