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The Uponor Single-stage SetPoint
Controller with Floor Sensor (A3041501)
accurately controls the room and/or floor
temperature for a hydronic heating zone
using Pulse Width Modulation (PWM)
technology. Simple up and down buttons
and
a display with large type make
this thermostat easy to read and
use. An optional Uponor Floor
Sensor (A3040079) is included to measure
floor temperature to protect the floor from
overheating and enhance comfort.
Introduction
Energy-saving Features
• Auto Heating Cycle
Additional Features
• Radiant Floor Heating
• Pulse Width Modulation (PWM)
• Floor and Air Temperature Control
• Outdoor and Floor Temperature
Display
• Backlight
• Freeze Protection
• Includes Floor Sensor (A3040079)
Installation & Operation Manual
Single-stage SetPoint Controller
with Floor Sensor (A3041501)
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Congratulations on the purchase of your new Uponor thermostat.
This manual will step through the complete installation, programming and sequence of
operation for this control. At the back, there are tips for control and system troubleshooting.
Getting Started
Preparation
Installation
Table of Contents
Getting Started ...........................................2
Installation ..................................................2
Preparation ............................................2
Removing the Thermostat Base .............3
Mounting the Thermostat .....................4
Floor Sensor Installation ........................5
Floor Sensor Wiring ................................6
Floor Sensor Testing ..............................7
Temperature vs. Resistance Table .............. 7
Thermostat Wiring .................................9
Testing the Thermostat Wiring ............10
User Interface ............................................11
Home Screen .......................................11
Symbols Description ............................11
Sequence of Operation..............................12
Heating Operation ............................... 12
Programmable Settings .............................13
Troubleshooting ........................................14
Error Messages ....................................14
Frequently Asked Questions ................15
Technical Data .....................................15
Improper installation and operation of this control could result in damage to the equipment
and possibly even personal injury or death. It is your responsibility to ensure that this control
is safely installed according to all applicable codes and standards. This electronic control is not
intended for use as a primary limit control. Other controls that are intended and certified as
safety limits must be placed into the control circuit.
Caution
• Jeweller screwdriver
• Phillips head screwdriver
• Wire stripper
Tools Required
--------------------------------------------
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Single-stage SetPoint Controller Installation & Operation Manual
Choose the placement of the thermostats early in the construction process to enable proper
wiring during rough-in.
Consider the following:
• Install on an interior wall.
• Keep dry. Avoid potential leakage onto the control.
• Ensure relative humidity is less than 90% (non-condensing environment).
• Do not expose to extreme temperatures beyond 32-122°F (0-50°C).
• Do not expose to draft, direct sun, or other cause for inaccurate
temperature readings.
• Install away from equipment, appliances, or other sources of electrical interference.
• Ensure easy access for wiring, viewing, and adjusting the display screen.
• Install approximately 5 feet (1.5m) off the finished floor.
• The maximum length of wire is 500 feet (150m).
• Strip wire to 3⁄8" (10mm) for all terminal connections.
• Use standard, 4-conductor, 18-AWG wire.
Installation Location
----------------------------------------
Materials Required
-----------------------------------------
• 18 AWG LVT Solid Wire
(Low-voltage Connections)
Removing the Thermostat Base
To remove the thermostat base:
• Locate the tab on the bottom of the thermostat.
• Push the tab with either your thumb or with a
screwdriver.
• Lift the thermostat front away from the
thermostat’s base.
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Mounting the Thermostat
Wall
Thermostat
Front
Thermostat
Base
If mounting directly to the wall:
• Drill holes and install the wall anchors.
• Feed the wiring through the large hole in the thermostat base.
• Fasten the thermostat base to the wall using the wood screws to the wall anchors.
• Terminate wiring to the wiring strip.
• Push the thermostat front onto the thermostat base.
31/4"
(83mm)
Stud
Gang
Box
Thermostat
Front
Thermostat
Base
Adapter Plate
If a single gang box is used:
• Adapter Plate is required (sold separately).
• Feed the wiring through the hole in the adaptor plate and the thermostat base.
• Fasten the adaptor plate to the gang box.
• Fasten the base of the thermostat to the adaptor plate.
• Terminate wiring to the wiring strip.
• Push the thermostat front onto the thermostat base.
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Single-stage SetPoint Controller Installation & Operation Manual
Thick Floor Coverings [greater than 3⁄8" (10mm)]
If installing a thick floor covering directly to the subfloor, a groove 1⁄8" (4mm) wide by 1⁄16"
(2mm) deep can be cut into the back of the flooring material to accommodate the wire for
the sensor. Ensure the sensor is located in such a position that the attached wire is able to
reach to a suitable junction location.
Avoid splices under the floor covering to ensure
trouble-free operation. Cut a groove 3⁄16" (5mm)
wide by 3⁄16" (5mm) deep by 13⁄4" (45mm) long to
accommodate the sensor. Locate the sensor midway
between the heating elements to ensure a proper
temperature reading.
Note: If it is not practical to cut a groove in the
surface covering, follow the installation method used
for thin floor coverings.
Floor Sensor Installation
Thin-set or Thin-pour Applications
If installing the floor covering over either a thin-set or thin-pour material of sufficient depth,
the floor sensor can be placed directly into either the thin-set material or the thin-pour
material and covered over. Ensure the sensor is
located in such a position that the attached wire is
able to reach to a suitable junction location. Avoid
splices within the thin set or thin pour to ensure
trouble-free operation. Locate the sensor midway
between the heating elements to ensure a proper
temperature reading.
Tiles
Thin Set
Hydronic
Pipe
Thin Floor Coverings [less than 3⁄8" (10mm)]
If installling a thin floor covering directly to the subfloor, a groove 1⁄8" (4mm) wide by 1⁄16"
(2mm) deep can be cut into the surface of the subfloor to accommodate the wire for the
sensor. Ensure the sensor is located in such a position that the attached wire is able to reach
to a suitable junction location. Avoid splices under the floor covering to ensure trouble-free
operation. Cut a groove 3⁄16" (5mm) wide by 3⁄16"
(5mm) deep by 13⁄4" (45mm) long to accommodate
the sensor. Locate the sensor midway between the
heating elements to ensure a proper temperature
reading.
Hardwood
Subfloor
Hardwood
Subfloor
New Installations
------------------------------------------
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Tile Floor Coverings
If installing a Floor Sensor (A3040079) into an existing tile floor with sufficiently large grout
lines, the sensor and wire can be installed in one of the grout lines between the tiles. Select
a low-traffic area of the floor that is midway between the heating elements for the sensor
location. Ensure the sensor is located in such a
position that the attached wire is able to
reach to a suitable junction location.
Avoid splices within the grout to ensure trouble-free
operation. Remove the
appropriate grout line and place the sensor and wire
in the floor. Re-grout the area.
Installing the Sensor to the Bottom of a
Subfloor
If installing the sensor to the bottom of a subfloor,
cut a piece of 1" (25mm) thick, rigid insulation into a
6" (150mm) by 6" (150mm) square.
Cut a groove 3⁄16" (5mm) wide by 3⁄16" (5mm)
deep by 13⁄4" (45mm) long into the insulation
to accommodate the sensor. Place the sensor
in the groove and sandwich the sensor
between the insulation and the subfloor.
Use a suitable fastening method to affix the insulation
to the subfloor.
Tiles
Thin-set
Subfloor
Subfloor
Retrofit Installations
----------------------------------------
Caution: Do not run sensor wires parallel to telephone or power cables. If the sensor wires
are located in an area with strong sources of electromagnetic interference, use shielded cable
or twisted pair or run the wires in a grounded metal conduit.
The Floor Sensor is supplied with 10' (3m) of cable. If a longer length is required, 24 AWG or
larger wire can be spliced onto the two wires from the sensor. The splices should be properly
soldered and protected in an accessible junction box. Follow the sensor testing instructions
given in this manual and then connect the wires to the control.
Floor Sensor Wiring
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Single-stage SetPoint Controller Installation & Operation Manual
Floor Sensor Testing
A good-quality test meter capable of measuring up to 5,000 kΩ (1 kΩ = 1000Ω)
is required to measure the sensor resistance. In addition, measure the actual temperature with
either a good-quality digital thermometer, or if a thermometer
is not available, place a second sensor alongside the one to be tested and compare the
readings.
First, measure the room temperature using the thermometer. Disconnect the Sen and Com
wires from the thermostat. Using an electrical meter, measure the resistance of the Sen and
Com wires at the thermostat location. Using the Temperature vs. Resistance Table below,
estimate the temperature measured by the sensor. The sensor measurement and thermometer
readings should be close. If the test meter reads a very high resistance, there may be a broken
wire, a poor wiring connection or a defective sensor. If the resistance is very low, the wiring
may be shorted, there may be moisture in the sensor or the sensor may be defective. To test
for a defective sensor, measure the resistance directly at the sensor location. Once the test
has been completed, reconnect the Sen and Com wires to the thermostat.
Do not apply voltage to the temperature sensor terminals at any time as damage to the
sensor may result.
Temperature vs. Resistance Table
Temperature Resistance
°F °C
-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
Temperature Resistance
°F °C
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
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Temperature vs. Resistance Table - Continued
Temperature Resistance
°F °C
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
Temperature Resistance
°F °C
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
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Single-stage SetPoint Controller Installation & Operation Manual
Thermostat Wiring
Zone Valve
-----------------------------------------------
Zone Control Module A3031003/A3031004
------------------------
Relay
---------------------------------------------------
C
518
R Rh W1 S1 Com
No Power
C R Rh W1 S1 Com
No Power
Zone
Valve
24 V (ac)
Transformer
L N
R C
Floor Sensor (A3040079)
C
518
R Rh W1 S1 Com
No Power
C
518
R Rh W1 S1 Com
No Power
24
3
C R Rh W1 S1 Com
No Power
Floor Sensor (A3040079)
Zone Control Module
A3031003/A3031004
Install field
jumper wire
R to Rh
C
518
R Rh W1 S1 Com
No Power
R
C
2
1
8
7
3
4
5
6
C R Rh W1 S1 Com
No Power
LNG
115 V (ac)
Floor Sensor (A3040079)
Relay
Transformer
Install field
jumper wire
R to Rh
Install field
jumper wire
R to Rh
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Multiple Pump Relay (A3080301)
-------------------------------
Testing the Thermostat Wiring
Testing the Power
------------------------------------------
If the thermostat display turns on, this indicates that the thermostat is operating correctly and
there are no electrical issues. In the event that the display is permanently off:
1. Remove the thermostat front.
2. Use an electrical meter to measure voltage between the R and C wiring terminals. For AC
power supplies, the voltage should measure between 10 to 30 V (ac).
For DC power supplies, the voltage should measure between 10 to 30 V (dc).
3. If the voltage on the R and C wire terminations is continuous and the thermostat display
is not on, the thermostat may have a fault. Contact your Uponor sales representative for
assistance.
If the thermostat display intially powers on but later shuts off intermittently, there may be a
short circuit from the W wire to ground, or the power supply is too small to power the load.
Testing the Heat Zone Output Wiring
----------------------------
1. Touch the button and set the heating temperature above the current room temperature.
Make sure the display does not flash “Max” if using a floor sensor.
2. When the “Heat On” symbol appears on the display, use an electrical meter
to check for voltage on the W and C wires connected to the zone valve,
wiring center, relay or switching relay. The electrical meter should read
10 to 30 V (ac) or (dc).
3. If the W and C wires have voltage, check the zone valve, wiring center, relay or pump to
determine if the heat device is operating correctly.
Thermostat Wiring
C
518
R Rh W1 S1 Com
No Power
RW
24 V
RW
HNXX HNHN NH
Com
Switching Relay
Zone 1 Zone 2 Zone 3
Class 2
Transformer
RW
Zone 1 Zone 2 Zone 3
C R Rh W1 S1 Com
No Power
Floor Sensor
(A3040079)
LN
Pump
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Single-stage SetPoint Controller Installation & Operation Manual
HEAT ON
Heat is turned on.
MODE OFF
The heating system is off.
WARNING SYMBOL
Indicates an error is present.
MIN
The floor is at or below the floor
minimum temperature.
MAX
The floor has reached the floor
maximum temperature.
Home Screen
Symbols Description
User Interface
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Heating Operation
Sequence of Operation
To change the heat temperature setting, push the or button to select a preferred
temperature setting. The Heat On symbol is shown on the display when the thermostat is
heating. The heat can cycle on and off within +/- 1.5°F (1°C) of the temperature setting.
The floor and air heating can be shut off by holding the button until Set Room is Off.
To resume heating when the Mode is Off, press the button to navigate to the Mode
setting, then press the button to select Mode Heat. The thermostat will resume heating at
the last previously set temperature.
Air Temperature Only
-----------------------------
If there is only an air temperature sensor (no floor sensor), the thermostat operates to control
your desired air temperature.
Floor Temperature Only
----------------------------
If the air sensor has been disabled, the thermostat will only maintain floor temperature and
ignore air temperature. This operation is recommended for areas such as bathrooms to ensure
that tile floors are warm to the touch.
Floor and Air Temperature
---------------------------
If the air sensor is turned on and a floor sensor is connected, the thermostat will maintain the
desired air temperature as well as a minimum floor temperature.
This operation is recommended for areas with large windows that allow the sun to shine into a
room and keep it warm without the need for heat. This can allow the floors to cool off during the
afternoon. When the sun goes down, it can take a long time for the floors to get warm again.
This may cause the room to cool off too much in the early evening. A floor minimum setting can
help with this condition by maintaining a floor minimum temperature. Keep in mind the floor
minimum temperature will override the air temperature, and if set too high, may overheat the
room.
This operation is also recommended for rooms with hardwood floors. Setting floor minimum
and maximum temperatures is a way of enhancing the comfort of the living space while
protecting floor coverings.
90°F (32°C)
Feels hot to the touch
80 to 85°F (26 to 30°C)
Feels warm to the touch
70°F (21°C)
Feels cool to the touch
40 to 45°F (5 to 7°C)
Feels cold to the touch
Suggested maximum for all floor
types other than wood.
Bathrooms and kitchens. Suggested
maximum for wood floors.
Rooms with large windows preventing
under heating in the evening.
Freeze protection for garages.
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Single-stage SetPoint Controller Installation & Operation Manual
Programmable Settings
Setting Display
User settings. Press the and buttons together for 3 seconds to enter and
advance to the next setting.
MODE
Select heat or off.
Range: HEAT, OFF
Default: HEAT
UNITS
Select the temperature units.
Range: °F or °C
Default: °F
LIGHT
Select when the display backlight should operate. Auto operates
the backlight for 30 seconds after a keystroke.
Range: OFF, AUTO, ON
Default: AUTO
SET FLOOR
Set the floor minimum temperature. Available when an auxiliary
floor sensor is connected and the built-in room sensor is on.
F
Range: OFF, 40 to 122°F (4.5 to 50.0°C)
Default: 72°F (22.0°C)
TYPE
Device Type number. Hold the button to view the
software version.
ESCAPE
Release the and buttons to return to the home screen.
Installer settings. Press the and buttons together for 5 more seconds.
AUXILIARY SENSOR
Select the type of auxiliary sensor. Available when an auxiliary sensor
is automatically detected.
Range: NONE = no auxiliary sensor, ROOM = Indoor Sensor,
FLOR = Floor Sensor, OUT = Outdoor Sensor
Default: OFF
ROOM SENSOR
Select if the built-in room temperature sensor is on or off. The
built-in room sensor can only be disabled when an auxiliary room
or floor sensor is connected.
Room
Range: ON or OFF
Default: ON
SET FLOOR MAXIMUM
Set the floor maximum temperature in order to protect the floor
covering. Suggested settings: Tile = 90°F (32°C), Wood Floor =
85°F (29°C)
F
MAX
Range: 40 to 122°F (4.5 to 50.0°C), OFF
Default: 85°F (29.5°C)
ESCAPE
Release the and buttons to return to the home screen.
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Error Message Description
SETUP MENU SAVE ERROR
The thermostat failed to read the Programmable Settings from memory
and has reloaded the factory default settings. The thermostat stops normal
operation until all Programmable Settings are checked except to provide
freeze protection.
Room
ROOM SENSOR OPEN CIRCUIT ERROR
The built-in air temperature sensor has an open circuit fault.
Do not confuse this error with the auxiliary room sensor short circuit error.
This error cannot be field repaired. Contact your wholesaler or Uponor sales
representative for details on repair procedures.
Room
ROOM SENSOR SHORT CIRCUIT ERROR
The built-in air temperature sensor has a short circuit fault. Do not confuse
this error with the auxiliary room sensor short circuit error.
This error cannot be field repaired. Contact your wholesaler or Uponor
sales representative for details on repair procedures.
AUXILIARY SENSOR OPEN CIRCUIT ERROR
The auxiliary sensor has an open circuit. Check for loose or damaged wires.
Locate and repair the problem as described in the Sensor Testing section
of this installation manual. The error clears after the auxiliary sensor fault
is corrected. If the auxiliary sensor was intentionally removed, power the
thermostat down
and up to clear the error.
AUXILIARY SENSOR SHORT CIRCUIT ERROR
The auxiliary sensor has a short circuit. Check for damaged wires. Locate
and repair the problem as described in the Sensor Testing section of this
manual. The error clears after the auxiliary sensor fault is corrected.
Troubleshooting
Error Messages
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Single-stage SetPoint Controller Installation & Operation Manual
Technical Data
Thermostat (A3041501)
Control Microprocessor control; this is not a safety (limit) control.
Packaged weight 0.6 lb. (290 g)
Dimensions 311⁄16" H x 3" W x 15⁄16" D (94mm x 76mm x 24mm)
Enclosure White PVC plastic, NEMA Type 1
Approvals Meets Class B: ICES and FCC Part 15
Ambient conditions
Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing
Power supply
10 to 30 V (ac/dc), 50/60 Hz, 1.8 VA standby,
56 VA max fully loaded, Class 2
Relay 30 V (ac/dc) 2 A, Class 2 circuits
Sensor
NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
– Included Floor Sensor (A3040079)
Frequently Asked Questions
Symptom Look for... Corrective Action
Display powering
on and off.
Measure voltage at
wiring terminals R and
C.
The power supply transformer may have
limited VA capacity. A transformer with a
larger VA rating is recommended.
Thermostat does
not heat.
Mode Off
Thermostat must be in Mode Heat in
order to provide heating.
Floor Sensor (A3040079)
Dimensions
3
⁄16
" OD x 11⁄2
" (5mm OD x 38mm)
Enclosure
316 stainless steel, 10' (3 m) 24 AWG, 300 volt PVC-insulated zipcord
Approvals
Operating range -58 to 140°F (-50 to 60°C)
Sensor
NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
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Uponor, Inc.
5925 148th Street West
Apple Valley, MN 55124 USA
Tel: 800.321.4739
Fax: 952.891.2008
Uponor Ltd.
2000 Argentia Rd., Plaza 1, Ste. 200
Mississauga, ON L5N 1W1 CANADA
Tel: 888.994.7726
Fax: 800.638.9517
SetPointController_InsOperMan_H489_0614, Copyright © 2014 Uponor. Printed in the Canada
www.uponorpro.com
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