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

specic 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 suboor 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 suboor

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 suboor 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 efcient.

Uponor Heat-only Thermostat with Touchscreen l 3

Heating modes

This thermostat can operate a hydronic radiant system
heating operation based on the air sensor measure operative

temperature, a oor sensor, or a combination of both to provide

the optimal level of comfort and control.

• Air temperature only: When a oor sensor is not connected,

the thermostat will maintain the room’s air temperature based
on the desired temperature setting.

• Air and oor: If using both sensors, the thermostat will
maintain the room’s air temperature along with maintaining a

minimum oor temperature. Early in the heating season when

the room is not experiencing high loads, it may be desirable

to have a warmer oor. The oor setpoint can be adjusted to
maintain the oor temperature. When the outdoor temperature

drops and the room load increases, the air sensor will take over.

This maintains the air temperature and provides a warm oor.

• Floor sensor only: The air sensor can be disabled or turned
off should the application require it (e.g., bathrooms). In this

instance, the thermostat will only maintain the oor temperature.

Heating operation

When the thermostat is set to HEAT mode of operation, it

will compare the setpoint values for the air and oor sensor

(optional) versus the actual temperature sensor readings.

• Air sensor: When the air temperature drops 1°F (0.5°C) below
the setpoint, the heating call will begin. The heating call will end
when the air temperature rises above the setpoint.

• Floor sensor: When the oor temperature drops 1°F (0.5°C)
below the setpoint, the heating call will begin. The heating
call will end when the air temperature rises 1°F (0.5°C) above
the setpoint.

Note: In PWM mode, the heating equipment may temporarily

turn off even when the heating indicator is ashing (showing a

call for heat).

Freeze protection

A mode is built into the thermostat that will attempt to protect the
space from freezing in the event the thermostat was left in the
OFF mode during the winter months. When the air sensor reads
the space temperature below 37°F (3°C), the heating output will
turn on to keep the space at 37°F (3°C) while in the OFF mode.
If the thermostat is turned on (heat mode), freeze protection
will be ignored and the user/installer is allowed to choose a set
temperature down to 34°F (1°C).

Thermostat display

This thermostat employs a capacitive touchscreen display
(i.e., the screen reacts to electrical impulses generated by a

nger). The user operates the functions of the thermostat by

touching the icons on the display. Below are the elements of the
thermostat display.

Temperature and setpoint

F

Units

C

Air or oor

setpoint
change
indicator

SET FLOOR TEMP LIMIT

ERROR

HEATING

Warning
indicators

Active status

Operative temperature sensing

Operative temperature is what people experience thermally in
a space by combining the effects of air temperature, air speed
and thermal radiation. This provides superior control of a radiant

heating system while maximizing comfort and efciency. The

design of the thermostat closely senses room conditions the way
the human body does.

PWM mode

When the room temperature is 1°F to 3°F (0.5°C to 1.5°C)
below the desired room setting, the thermostat manages the
application of heat by varying the on-and-off cycles (PWM). The
on-and-off times vary depending on the difference between room
and desired temperatures—the greater the distance between
the room temperature and the desired temperature, the greater
the on time. This prevents the room temperature from rising
above the desired temperature. The heating system will run
continuously at temperature differences greater than 3°F (1.5°C).

4 | uponorpro.com

Off/heat
mode button

AIR

FLOOR

Air or oor information

is currently displayed

Change from off to heat mode

As shown, when the thermostat is in OFF mode, the
up and down arrows will not be displayed to remind
the user that heating will not take place.

• To change from OFF to HEAT mode, press the
OFF/HEAT mode power button in the lower
left-hand corner of the screen.

Viewing the current air temperature

When the thermostat has detected no user

interaction for ve seconds, it will display the current

air temperature reading. Notice the rectangle

around the AIR button. This is to conrm the user is

AIR

viewing the current air temperature.

FLOOR

Adjusting the air temperature setting

To make the air temperature warmer or cooler,
change the air setpoint. To adjust this value:

SET

• Make sure the thermostat is turned on and in the
HEAT mode as shown.

HEAT

AIR

FLOOR

• Press the up or down arrow to adjust the new room
temperature. The temperature now showing
is the new air temperature setpoint.

• Conrm this action by checking that the SET indicator

appears and ashes with the horizontal bar.

Viewing the current oor temperature

When the thermostat has detected no user

interaction for ve seconds, it will display the current

air temperature reading. Press FLOOR to display

the current oor temperature. This is conrmed

AIR

when the rectangle appears around FLOOR.

FLOOR

Adjusting the oor temperature setting

To make the oor temperature warmer or cooler,
the oor setpoint will need to be changed. To adjust

this value:

• Make sure the thermostat is turned on and in the
HEAT mode.

• Make sure the rectangle is around the FLOOR
button. Press the FLOOR button once if needed.

• Press the up or down arrow to adjust the new room

temperature. The temperature now showing is the new oor

temperature setpoint.

• Conrm this action by checking that the SET indicator appears

and ashes with the horizontal bar.

SET

HEAT

AIR

FLOOR

Changing the temperature units

The thermostat is set to display all of the

F

temperature information in Fahrenheit. To change
the units from Fahrenheit to Celsius:

• Make sure the thermostat is turned on and in the

HEAT mode and the SET indicator is not ashing.

• Ensure the rectangle is around the AIR button. If
no rectangle is present, press the AIR button once to make the
rectangle appear.

F

• Once the rectangle appears around the AIR button, press the

AIR button once more. The unit indicator will begin to ash.

• Press the up or down arrow to set the new units. After ve
seconds, the change will be accepted and the new units
will be displayed.

Setting the maximum air set temperature

F

Depending on the installation or application, it may
be necessary to limit how warm the room gets
based on energy consumption or air temperature
needed (e.g., the garage). To adjust the maximum
air set temperature allowed:

• Make sure the thermostat is turned on and in the

HEAT mode and the SET indicator is not ashing.

• Press the AIR button twice. If done correctly, the rectangle
will appear around the AIR button. The SET, TEMP LIMIT and

HEAT indicators will begin to ash.

• Press the up or down arrow to set the new maximum air

F

temperature allowed.

Setting the minimum air set temperature

Depending on the installation or application, it may
be necessary to lower the room set temperature
past the default (for energy savings). To adjust the
minimum air set temperature allowed:

• Make sure the thermostat is turned on and in the

F

HEAT mode and the SET indicator is not ashing.

• Press the AIR button three times. If done correctly, the
rectangle will appear around the AIR button and the SET,

TEMP LIMIT and COOL indicators will begin to ash.

• Press the up or down arrow to set the new minimum air
temperature allowed.

Note: The default setting is 59°F (15°C) for the minimum air set
temperature and can be adjusted down to 34°F (1°C).

F

AIR

FLOOR

F

TEMP LIMIT

HEAT

AIR

FLOOR

F

TEMP LIMIT

HEATING

AIR

FLOOR

Advanced settings

This Uponor thermostat features advanced settings which can
help better manage the system. These settings should only

be accessed and changed by a qualied installer. Improper

adjustment of these settings can result in incorrect operation of
the heating system.

Uponor Heat-only Thermostat with Touchscreen l 5

Setting the maximum oor protection limit

Depending on the installation or application, it

may be necessary to limit how warm the oor gets
to protect the wood ooring installed above the

radiant system. When this temperature is reached,
a warning will be displayed on the screen. To adjust

the maximum oor set temperature allowed:

• Make sure the thermostat is turned on and in the HEAT mode

and the SET indicator is not ashing.

• Press the FLOOR button twice. If done correctly, the rectangle
will appear around the FLOOR button. The FLOOR TEMP
LIMIT and HEAT indicators will appear.

• Press the up or down arrow to set the new maximum oor
temperature allowed.

• If the oor temperature falls 2°F (1°C) below the maximum

oor protection limit, the warning will go away.

FLOOR TEMP LIMIT

AIR

F

HEAT

FLOOR

Turn off the air sensor

In some installations it may be necessary to
operate the heating equipment by the oor
sensor only. Applications would include a bathroom

oor or public space where the physical thermostat

AIR

is located outside of that room. To turn the air

FLOOR

sensor off:

• Make sure the thermostat is turned on and in the HEAT mode

and the SET indicator is not ashing.

• Press the AIR button. If done correctly, the rectangle will
appear around the AIR button.

• Press the down arrow and lower the set temperature
past the lowest allowed setting (34°F/1°C). The display
should read OFF.

Important! The air sensor cannot be turned off if no oor
sensor is connected.

Note: The thermostat accepts the new setting immediately and
will return to the main screen when the thermostat has detected

no user interaction for ve seconds. The display reverts to

indicate the current room temperature. Continuously touching
the AIR button will cause the menu to repeat.

Error codes

This thermostat includes a feature to help diagnose any issues

that may arise with the air or oor sensors.

Important! Installers and users should be familiar with how

the thermostat will protect the installation in the case of a oor

sensor failure.

• When the thermostat is set up for air and oor sensor operation

and the oor sensor fails, ERROR will appear on the display.

The thermostat will ignore any slab setpoint temperature and
set the air temperature for 65°F (18°C).

• When the thermostat is set up for oor sensor operation

(no air) and the oor sensor fails, ERROR will appear on

the display. The thermostat will ignore any slab setpoint
temperature. The air sensor will turn on and set the air
temperature for 65°F (18°C).

To clear the error, press the AIR button to switch to the AIR
display, correct the issue with the oor sensor, and cycle
the power off and on again. It will be necessary to readjust
the set temperatures and other settings after the thermostat
turns back on.

Open code

This code indicates that the air or oor sensor was

functioning and reading properly and now it is no
longer detected (electrically disconnected). Check

ERROR

the oor sensor connections at the terminal strip

AIR

to make sure they are attached securely and the

FLOOR

screws do not need to be tightened. If not, the wire
may have been cut or the sensor has failed and the sensor will

need to be replaced. If the oor sensor connections are attached

securely, then the air sensor has failed and the thermostat will
need to be replaced.

Short code

This code indicates that the oor sensor was

connected and reading properly, but is now unable
to read a temperature within the acceptable range.

ERROR

Check the sensor connections at the terminal strip

AIR

to make sure the wires are not touching each other

FLOOR

or connections are not wet. If not, there may be
moisture in the sensor, a nail or screw has damaged the wires or
the sensor is defective and will need to be replaced.

Temperature displays

The following information explains the different
temperature displays.

Low temperature display

When the air or oor temperature falls below

33°F (0.5°C), LO will display as shown. When
the temperature rises above that limit, the actual
temperature will display.

AIR

FLOOR

High temperature display

When the air temperature rises above 95°F (35°C)

or the oor temperature rises above 140°F (60°C),
HI will display as shown. When the temperature
drops below those limits, the actual temperature
will display.

AIR

FLOOR

F

F

6 | uponorpro.com

Boiler

A3100101 Uponor Thermostat with Floor Sensor

P1

To boiler

A9010599

Floor Sensor

(Optional)

A3010100 Uponor Single

Pump Relay

Sen1 Com W R

C

G/T

R/T

5

6NO

6NC

N

L

3

4NO

4NC

PLUG RELAY

*

A3100101 Uponor Thermostat with Floor Sensor

A3100101 Uponor Thermostat with Floor Sensor

A9010599

Floor Sensor

(Optional)

A9010599

Floor Sensor

(Optional)

3

rd

Party

Boiler

Sen1 Com W R

A3100101 Uponor Thermostat with Floor Sensor

N

L

P1

To boiler

A9010599

Floor Sensor

(Optional)

A3010100 Uponor Single

Pump Relay

Sen1 Com W R

Sen1 Com W

R

C

G/T

R/T

5

6NO

6NC

N

L

3

4NO

4NC

PLUG RELAY

*

A3031003-4 Zone

Control Module

R

C

ES

ES

2 3 4

R1 R2 Y1 Y2

P1

A3100101 Uponor Thermostat with Floor Sensor

A3100101 Uponor Thermostat with Floor Sensor

N

A9010599

Floor Sensor

(Optional)

Sen1 Com W R

C

G/T

N

Control Module

A3100101 Uponor Thermostat with Floor Sensor

Sen1 Com W R

A9010599

Floor Sensor

(Optional)

Figure 1: Uponor thermostat wired to a
zone control module

A3100101 Uponor Thermostat with Floor Sensor

Sen1 Com W

2 3 4

R

C

ES

ES

R1 R2 Y1 Y2

A3031003-4 Zone

R

24 VAC

TRANSFORMER

A3050050

Sen1 Com W R

A9010599

Floor Sensor

(Optional)

N

L

N

L

3

4NO

4NC

*

PLUG RELAY

A3010100 Uponor Single

Pump Relay

C

G/T

R/T

5

6NO

6NC

Figure 2: Uponor thermostat wired to a pump relay

A3100101 Uponor Thermostat with Floor Sensor

Sen1 Com W

R

To boiler

A9010599

Floor Sensor

(Optional)

A3011075 Zone Valve

Figure 3: Uponor thermostat wired to an actuator or zone valve

A9010599

Floor Sensor

(Optional)

rd

3

Party

Figure 4: Uponor thermostat wired to a boiler

Uponor Heat-only Thermostat with Touchscreen l 7

Technical specications

Operating voltage 24 VAC +/- 10% Class II

circuits only

Maximum load 1.3 Amps at 24VAC or equivalent

of 6 thermal valve actuators

Air display range 32°F to 95°F (0°C to 35°C)

Floor display range 32°F to 140°F (0°C to 60°C)

Air setting range 34°F to 86°F (1°C to 30°C)

68°F (20°C) default

Floor setting range 34°F to 95°F (1°C to 35°C)

68°F (20°C) default

Air maximum setting Adjustable to 86°F (30°C)

Floor maximum setting Adjustable to 95°F (35°C)

Resolution 1°F (0.5°C) displayed, 0.25° calculated

Temperature
ranges

Shipping and storage: 14°F to 158°F
(-10°C to 70°C)
Operation: 32°F to 104°F (0°C to 40°C)

Humidity 20 to 90% non-condensing

Size 5.39" (136.91mm) H x 3.22"

(81.79mm) W x 0.63" (16mm) D

Sensor temperature vs. resistance table

Temperature Resistance

°F °C Ω

Temperature Resistance

°F °C Ω

CAN ICES-3 (B)/NMB-3(B) compliance

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 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 interference to radio or television
reception, which can be determined by turning the equipment
off and on, the user is encouraged to try and 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 to a different circuit from that to which
the receiver is connected

• Consult the dealer or an experienced radio/TVG technician
for help

Setpoint limits settings

Minimum range 38°F (3°C) to maximum limit setting

50°F (10°C) default

Maximum range Minimum limit setting to 99°F (37°C)

86°F (30°C) default

Floor sensor 10K J curve, 250 ft. maximum with

18 AWG

Units User-congurable Fahrenheit or Celsius

Memory Permanent for all settings and modes

-50 -46 490,813

-45 -43 405,710

-40 -40 336,606

-35 -37 280,279

-30 -34 234,196

-25 -32 196,358

-20 -29 165,180

-15 -26 139,402

-10 -23 118,018

-5 -21 100,221

0 -18 85,362

5 -15 72,918

10 -12 62,465

15 -9 53,658

20 -7 46,218

25 -4 39,913

30 -1 34,558

35 2 29,996

40 4 26,099

45 7 22,763

50 10 19,900

55 13 17,436

60 16 15,311

65 18 13,474

70 21 11,883

75 24 10,501

80 27 9,299

85 29 8,250

90 32 7,334

95 35 6,532

100 38 5,828

105 41 5,210

110 43 4,665

115 46 4,184

120 49 3,760

125 52 3,383

130 54 3,050

135 57 2,754

140 60 2,490

145 63 2,255

150 66 2,045

155 68 1,857

160 71 1,689

165 74 1,538

170 77 1,403

175 79 1,281

180 82 1,172

185 85 1,073

190 88 983

195 91 903

200 93 829

205 96 763

210 99 703

215 102 648

220 104 598

225 107 553

Uponor, Inc.
5925 148th Street West
Apple Valley, MN 55124
USA

T 800.321.4739
F 952.891.2008

A3100101_heat-onlyTstatWtouchscreen_manual_0316, Copyright © 2016 Uponor. Printed in the United States. MKT10050-AA

Uponor Ltd.
2000 Argentia Rd., Plaza 1, Ste. 200
Mississauga, ON L5N 1W1
CANADA

T 888.994.7726
F 800.638.9517

uponorpro.com