Uponor A3030101 Instruction Sheet

RADIANT HEATING SYSTEMS

HEAT-ONLY THERMOSTAT

INSTRUCTION SHEET

Technical Data

Operating 24VAC +/- 10%
Voltage

Maximum Load

Display Range 38°F to 99°F (2°C to 37°C)
Setting Range 38°F to 99°F (2°C to 37°C)

Minimum Limit 38°F (2°C) to maximum limit

Maximum Limit Minimum limit t

Units User

Memory Permanent settings and

Freeze Protection Activation at 38°F (3.3°C)

Resolution 1° displayed, 0.25° calculated
Temperature Shipping and storage —

Ranges

Humidity 20 to 90% non-condensing
Size 5" H x 2.72" W x 0.91" D

1.3 Amps at 24VAC
4 x MVA

(part number A3020522)

6 x TVA (part number

A3010522, four-wire)

6 x TVA (Canadian model only,

part number A3020416,
two-wire)

68°F (20°C) default setting

50°F (10°C) default
minimum setting

o 99°F (37°C)
86°F (30°C) default
maximum setting

able

onfigur

-c

Fahrenheit or Celsius

mode without power

De-activation at 39°F (3.8°C)

14°F to 158°F, (-10°C to 70°C)

Operation —

32°F to 104°F, (0°C to 40°C)

Overview

The Uponor heat-only thermostat
(A3030101) is designed for hydronic
heating applications.

The thermostat is power-sharing,
meaning it receives power for
operation by sharing voltage
with the connected wiring. This
eliminates any need for a third wire
or batteries, making the thermostat
simple to install, wire and service.

Note: The 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 the
thermostat. If connecting the
thermostat to a third-party control
device, refer to that device’s
installation instructions for specific
information regarding operation
with a power-sharing thermostat.
The Typical Wiring Schematics
section in this instruction sheet
features the most common wiring
applications. F
contact Technical Services.
Uponor U.S.: [phone]
Uponor Canada: [phone]

or additional help,

Tools Required

Small, flathead scr

•
Phillips scr

•
mounting hardware)

e stripper and cutt

Wir

•

ewdriver

ewdriver (f

or

er

Installation

Prior to installing the Uponor
thermostat, follow the instructions
below.

1. Thoroughly read this instruction
sheet to understand the proper
procedures for installation and
operation. Failure to do so
could result in damage to the
thermostat or its connected
equipment, and can also
create a safety hazard.

2. Ensure the function and rating
of the thermostat is suitable for
the application.

3. Only experienced and trained
professionals familiar with low­voltage wiring should attempt
to install the thermostat.

4. Uponor recommends using
18AWG LVT wiring for all
low-voltage connections

ed by local

egulat

(as r
building codes).

Placing the Thermostat

e you plac

Wher
is extremely important. Install the
thermostat appr
(1.75 met
a smooth, flat surface. Avoid
mounting the thermostat in

ollowing locations.

the f

• Near or around windows
On outside walls

•

• Near fireplaces

•

In the corner of a room

• Behind doors

• On interior walls susceptible
to solar gains

• Near stoves, lamps,
televisions, etc.

• Damp areas

e the thermostat

ely five f

ximat

o

ers) above the floor on

eet

Mounting the Wall Plate

The thermostat case can mount to
a standard electrical wall box or
most wall surfaces using suitable
hardware. To properly mount the
wall plate, follow the instructions
below.

Push top

down to
separate

1. Separate the front and back
plates of the thermostat by
gently applying downward
pressure on the front plate to
separate the front plate from
the back plate.

2. Pull the thermostat wire through
the round opening in the back
plate.

3. Place the back plate against the
wall at the desired location to
cover the opening or electrical
wall box.

4. Align the holes of the back
plate to the holes in the wall or
electrical wall box, and attach
the plate with screws. If
mounting the plate to drywall,
use wall anchors and screws.

5. If the wall cavity behind the
thermostat is susceptible to
drafts (e.g., from a return-air
plenum or an uninsulated wall),
plug and seal any openings to

ecting

event them fr

pr

ature readings.

emper

t

om aff

Caution: Disconnect
electrical power to the
system to prevent electrical
shock and damage.

1. Remove

1

⁄4" of wire insulation
from the wire ends. Ensure the
bare wires are clean and free
of corrosion.

2. Route the wires to the terminal
blocks and place the end of
the wires in the correct wiring
locations.

Note: The heat terminals (Rh and
W) are not polarity sensitive.

Mounting the Thermostat
to the Wall Plate

To mount the thermostat to the wall
plate, follow the instructions below.

1. Place the tabs at the bottom
of the front enclosure into the
grooves at the back of the
wall plate.

2. Check the alignment between
the two components.

3. Apply pressure to the top of
the thermostat until you hear
a click.

2.72"

(69mm)

5.00"

(127mm)

Differential Mode

When the room temperature falls
1°F (0.5°C) below the desired room
setting, the control devices wired to
the thermostat activate.

Pulse Width Modulation
(PWM) Mode

When the room temperature is
between 1 to 3°F (0.5 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 further
away, 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).

Note: In PWM mode, the heating
equipment may temporarily turn
off even when the heating icon is
flashing (indicating a call for heat).

2.5"

(63.5mm)

0.75"

(19mm)

erminal

T

W

erminal

T

Rh

Rc

Rh

W

Operation

Y

G

The dynamics of a r
syst
baseboard or forced-air heating
syst
syst
objects in the room. The Uponor
thermostat uses optimized c

Wiring the Thermostat

Follow the instructions below to
properly wire the thermostat.

e:

Not

All wiring must c

local electrical codes and standards.

2

omply with

logic t
Refer to the paragraphs below
f
operation — differential mode
and pulse width modulation
(PWM) mode.

2 Cond. Stranded

adiant heating

em differ from a typical

This is because r

em.
ems heat the mass and the

o control radiant systems.

ent modes of

or the two diff

er

WG,

A

8

1

adiant

ontr

Digital Filtering

The thermostat also features digital
filtering, meaning the thermostat
continuously measures the room
temperature and employs a digital
filter to create a stable reading and

onsistent operation. If each room

c

ol

temperature reading displayed
as it is sensed, the temperature
shown would appear erratic and
inconsistent. The filtering technique
throws out sensor readings with
large differences from the displayed
temperature and then limits the