Uponor Heat-only Thermostat Installation And Operation Manual
Uponor Heat-only Thermostat
with Touchscreen
Installation and operation manual
Overview
The Uponor Heat-only Thermostat (A3100101) is designed
for precise temperature control of hydronic radiant heating
applications. The thermostat includes an option to add a oor
sensor (A9010599) to measure oor temperature for enhanced
comfort and to protect the surface from overheating.
Additional features
• Operative temperature sensing
• Two-wire power sharing (easier installation)
• Capacitive touchscreen
• Color-enhanced display
• Slim, aesthetic design
Getting started
It is the installer’s responsibility to ensure this thermostat is
safely installed in accordance with all applicable codes and
standards. Uponor is not responsible for damages resulting
from improper installation and/or maintenance.
To avoid personal injury and damage to the
equipment:
• Read the manuals and documentation to familiarize yourself
with the product.
• Leave the manuals in an accessible location for the user’s
reference. (Note: Replacement manuals and documentation
on this product are available on uponorpro.com.)
• Turn off power to zone boards and other devices prior to
connecting the thermostat.
• Follow proper installation and operation practices for this
thermostat. Improper installation or use of the thermostat could
result in damage to the equipment.
• Do not open the thermostat. There are no serviceable parts
inside the thermostat and opening it will void the warranty.
This thermostat works effortlessly with other Uponor components.
However, some commonly used third-party devices (e.g.,
relays, zone valves, etc.) may have compatibility issues with
this thermostat. If connecting the thermostat to a third-party
control device, refer to that device’s installation instructions for
specic information regarding operation with a power-sharing
thermostat. A 10K Ohm, 0.25 Watt resistor is included in the
packaging when compatibility issues arise.
Refer to the wiring examples on page 7 for the most
common wiring applications. For additional information,
contact Uponor Technical Services at 800.321.4739 (U.S.)
or 888.994.7726 (Canada).
Tools required
• Small, athead screwdriver
• Phillips screwdriver (mounting hardware)
• Wire stripper and cutter
• Volt meter (oor sensor installations)
• Digital thermometer
• Multimeter
Installation overview
Prior to installing the Uponor thermostat, follow the instructions
below. (Note: Only experienced and trained professionals familiar
with low-voltage wiring should attempt to install the thermostat.)
1. Thoroughly read this manual to understand the proper
procedures for installation and operation. Failure to do so
could result in damage to the thermostat or its connected
equipment, creating a safety hazard.
2. Ensure the function and rating of the thermostat is suitable for
the application.
3. Uponor recommends installers use 18 AWG LVT wiring
for all low-voltage connections (as regulated by local
building codes).
Placing the thermostat
Where you place the thermostat is extremely important. Install
the thermostat approximately 5 ft. (1.5m) above the oor on
a smooth, at surface. Avoid mounting the thermostat in the
following locations.
• On outside walls
• On interior walls susceptible to solar gains
• On interior walls where the wall is unconditioned
• On a return-air chase
• Near windows
• Near replaces
• Near stoves, lamps, televisions or other electronics and
appliances
• In the corner of a room
• In damp areas
• Behind doors
• In areas where the temperature inside the wall differs from the
room temperature
Installing the thermostat
The thermostat can mount to a wall surface or a standard
electrical wall box using suitable hardware. The thermostat is
composed of two parts: the back plate and the controller. Refer
to the steps below to complete the installation.
1. Remove the back plate from the thermostat by pulling the
bottom of the plate away from the controller. The back plate is
hinged at the top of the controller.
2. Locate the back plate on the wall so the connection wires
are run through the rectangular wiring opening. The wiring
opening is right next to the wiring terminals.
3. Align the holes of the back plate with the holes in the electrical
wall box. Attach the plate with screws. If mounting directly on
sheetrock, use wall anchors and screws.
2 | uponorpro.com
Note: Avoid mounting the thermostat on a return-air chase or
A3100101 Uponor Thermostat with Floor Sensor
A9010599
Floor Sensor
(Optional)
Sen1 Com W R
A3031003-4 Zone
Control Module
R
C
ES
ES
2 3 4
R1 R2 Y1 Y2
where the temperature inside the wall differs from the room
temperature. If that is unavoidable, it may be necessary to plug
or seal the wire hole opening to prevent the environment inside
the wall from affecting the thermostat’s readings.
Wiring
Caution: Disconnect electrical power to the system to
prevent electrical shock and damage.
1. Remove 3⁄16" of
insulation from the
wire ends. Ensure
the wire ends are
clean, dry and free
from corrosion.
2. Connect the power
wires to the Rh
and W terminals.
This corresponds
to terminals 2 and
3 on the Uponor
Zone Control
Module (A3031003
or A3031004). The
RH and W terminals
are not polarity sensitive.
3. Connect the optional oor sensor to the
SEN1 and COM terminals.
Note: The oor sensor is detected when power is rst applied to
the thermostat. Connecting the oor sensor with power applied
will prevent the oor functions from operating and may damage
the thermostat.
Important! Do not connect power to the oor sensor terminals
as damage to the device may occur.
Attaching the thermostat to the back plate
1. Locate the tabs and holes on the controller and back plate.
2. Align the back plate tab with the controller holes by leaning
the top of the controller on the back plate until it hooks.
3. Gently hinge the bottom of the thermostat onto the wiring
terminals until the thermostat engages with the terminal
connectors.
4. Use gentle pressure on the bottom of the thermostat until the
controller clicks into its locked position.
Important! Only gentle pressure is needed to engage the
controller onto the back plate. If resistance is felt, realign
the controller to the left or to the right to ensure the controller
pins are correctly aligned with the terminals. Do not apply
extreme pressure to the display area as damage to the
equipment may result.
Installing the oor sensor (optional)
The oor sensor (A9010599) comes with a 10-ft. wire. Install
the sensor and wire in a manner so it can be replaced should
it fail. If additional wire is needed to connect the sensor to the
thermostat, use 24/2 AWG. Uponor recommends installers
solder the connections (versus wire nuts) and place the
connections in an accessible junction box.
• Concrete/lightweight applications — If installing a oor
sensor in a lightweight application, make sure the sensor is
installed within a conduit (without splices) for easy removal
and replacement should the sensor fail. The oor sensor and
conduit should be placed equidistant between two parallel runs
of pipe for optimal sensing and control.
• Joist Trak™ installation — When installing a oor sensor
beneath the suboor and the surface above is nished, cut
a piece of 1" rigid insulation a minimum of 6" x 6". Cut a ¼"
groove from the outside edge to the center of the insulation.
Insert the oor sensor into the insulation and run the sensor
wire through the channel. Attach the insulation to the suboor
with adhesive or other suitable material. Make sure the sensor
is placed in the center of the joist, between the two plates.
• Quik Trak® installations — Prior to the nished ooring
being installed over the Quik Trak panels, cut or router a ¼"
groove into the suboor to accommodate the sensor and wire.
Route the wire to a location where the sensor can be wired
into the thermostat.
Testing the sensor — The oor sensor should be tested
prior to pouring concrete, closing up a ceiling or installing the
nished ooring. The installation will require a multimeter and
digital thermometer to properly test the resistance (ς) through
the sensor wires. Using the thermometer, read or measure
the temperature around the oor sensor location. Using the
multimeter, measure the resistance between the two wire leads
of the sensor. (Note: The wires should NOT be connected to
the thermostat.)
Compare the resistance value read on the meter to the value
on the table based on the temperature on the thermometer. The
values do not have to match but they should be close. If the
value on the meter is reading high, check for broken wires or a
bad sensor. If the value is reading low, there may be moisture
inside the sensor or the wiring is shorted.
Sequence of operation
This thermostat is designed to control hydronic radiant
applications. The dynamics of these types of systems differ
from a typical forced-air furnace or baseboard heating
application. A radiant system heats the mass and the objects
in the room. This thermostat uses fully automatic differential
and pulse width modulation (PWM) control functions to ensure
zone is comfortable and energy efcient.
Uponor Heat-only Thermostat with Touchscreen l 3
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