SunStat 500675 User manual

5
sensor
2. Installation
Remove the Thermostat Face
1. Remove the thermostat Front Module from
the Power Module by opening the door and
loosening the screw.
2. Pull outward near the bottom on the Front
Module and lift off. Be careful not to bend or
damage the 14-pin electrical connector on the
back of the Front Module.
Prepare the Wiring
1. Find a location for your thermostat. It is suitable for indoor use only, on
insulated or uninsulated walls. Locate it about 41⁄2feet to 5 feet above the
oor on an inside wall. Make sure it is well ventilated and not located in a
conned space such as a small closet or cabinet. Avoid placing it near other
heat sources such as hot-water piping, heat duct, wall-mount lighting, and
direct sunlight to help prevent adversely affecting the thermostat.
2. Turn off the power to the oor warming system at the main circuit panel
before doing any electrical work.
3. A qualied electrician should run a dedicated circuit from the main circuit
panel to the thermostat location.
4. If a dedicated circuit is not possible, you may tap from another circuit in the
room. Make sure there is enough load capacity (amps) to handle the addition
Owner’s Manual
Your new SunStat Nonprogrammable thermostat is designed to control
the voltage to either a 120VAC or 240VAC resistive oor warming system.
Please follow this manual for complete installation and operation instructions.
If you have any questions or comments, try calling Technical Support at
1-800-276-2419.
CAUTION: Make sure you are qualied and are familiar with house wiring.
This is a line voltage device that could cause serious injury or damage if
improperly installed.
Connect Wires
1. Match and connect the two
wires marked “LINE1” and
“LINE2” to the power supply wires
using the wire nuts provided.
2. Gently tug on the wires to
make sure they are secure,
otherwise a wire could loosen
and cause failure.
3. Overwrap the wire nuts with
electrical tape to better secure
them to the wires.
4. Match and connect the two
wires marked “LOAD1” and
“LOAD2” to the oor warming
system lead wires and secure
these wires the same way.
5. Connect the house ground
wire to the green or bare lead
wire(s) of your oor warming
system.
6. Insert the ends of the oor
sensor wire into the “SENSOR”
terminals (1 and 2) and tighten
the screws. There is no polarity,
so it does not matter which wire
end goes into which terminal.
CAUTION: Before continuing,
make sure your power supply
voltage matches the voltage
rating of your oor warming
system.
Connecting 240V to a 120V oor warming system will cause overheating and
damage to the system and may damage the control, other wiring, oor cover-
ings, etc.
Remote Control
1. If you want to connect your thermostat to a remote control device, such as
a home automation system, rst make sure that the remote device has a “dry
contact” output (an un-energized switch, such as the contacts on a relay).
Many home automation systems come with such an output that opens or
closes at specied times.
2. Pull 2-conductor wire, size 18- to 24-gage, through the wall from the remote
device, into this electrical box.
3. Connect the wire ends into the “SETBACK” terminals (5 and 6) and tighten
the screws (no polarity).
SunStat Relays
1. If you want to use your thermostat to drive a SunStat Relay(s) (ask
your dealer about this convenient way to control larger systems with one
thermostat), rst read and follow the instructions for the SunStat Relay
thoroughly.
2. Pull 2-conductor wire, size 18- to 24-gage, through the wall from the
SunStat Relay, into this electrical box. This wire may be up to 100 feet (30 m)
in length from the thermostat to the last SunStat Relay installed.
3. Connect the wire ends into the “RELOUT” terminals (3 and 4) and tighten
the screws (Observe polarity of the wires
when connecting to the SunStat Relay).
Mount the Thermostat
1. Carefully fold and press the wires
back into the electrical box. Do not use
the thermostat to push them in, as this
may cause connections to loosen and
possible failure.
2. Secure the thermostat Power Module
SunStat
Non-programmable Thermostat
Model 500675
1-4
from
power
supply
to
oor
warming
system
1. Preparation
1. Unpack your thermostat and make sure everything is in good condition:
•Thermostat
•Floor sensor
•Small screwdriver
•Mounting screws
•Wire nuts for wiring connections
If any parts are missing or damaged, contact the store where you purchased
this thermostat. Do not install a damaged part.
2. Gather the following tools and supplies:
•Phillips screwdriver, hole saw
•Wire strippers, “sh tape”, other electrical tools
•Electrical box for thermostat:
a. If you are connecting to power leads from only 1 or 2 oor warming
systems, you may use a single-gang, 31⁄2inch deep box.
b. If you are connecting to power leads from 3 oor warming systems,
use a 4x4x21⁄8 inch or deeper box (not a 2-gang box) when your wall studs
are still exposed. Install a single-gang “mud-ring” cover on the box before
installing drywall materials.
c. For more than 3 oor warming systems or other layouts, you may need
to install a junction box to connect the power leads together. Then use
house wire to connect between the junction box and the thermostat
electrical box. See the installation instructions for your oor warming
system for more information.
ALWAYS: Wire all circuits as Class 1, Electric Light and Power Circuits.
ALWAYS: Wire all circuits with insulation rated 600V minimum.
ALWAYS: Mount this control only to a grounded metallic box or a
nonmetallic box.
ALWAYS: Use power supply wires suitable for at least 90°C.
CAUTION: High voltage – disconnect power supply before servicing.
CAUTION: The GFCI in this control does not protect against shock if both
bare conductors are touched at the same time.
of your oor warming system, and that it is NOT wired in series with any other
device, including other GFCIs.
5. The circuit breaker in the main circuit panel should be 15 amps maximum
for a oor warming system totaling 12 amps or less. For larger systems up
to 15 amps, use a 20 amp maximum circuit breaker. Never exceed 15 amps
on this thermostat. You may consider using an arc-fault (AFCI) type circuit
breaker for additional protection.
6. Pull the power supply wiring into this box, leaving about 6 inches of wire.
7. Pull the oor sensor wire and the power lead wires from your oor warming
system up the wall, into this box. Refer to your oor warming system
installation instructions for placement of the oor sensor tip into the oor area.
Note: The sensor wires should not be run in the same conduit as line voltage
wires to avoid possible interference. If the sensor lead wires are not long
enough, they may be extended an additional 15 feet (4.5 m) using minimum
20-gage 2-conductor wire or up to 50 feet (15 m) using shielded wire.
8. Mount the electrical box.
power
module
front
module

3. Quick Setup
On/Off Switch
Your thermostat should be turned off when it is
rst installed. The display will show OFF.
1. Slide the on/off switch to the upper position,
turning the thermostat on. The display will
show the sensor temperature, setpoint
temperature, and other information.
2. To turn the thermostat off anytime, slide the
on/off switch to the lower position. No heating
will occur and all settings are retained.
Change Format Between °F (Farenheit) and°C (Celsius)
Your thermostat is factory set to operate in either °F format or °C
format. If needed, you may change this at any time as follows:
1. Press the OPTIONS button and hold for 1 second. An °Fwill
show on the display.
2. Press the down or up button to toggle °C.
3. Press the HOLD/RETURN button to return to the normal
operating mode.
SET TEMP
FLOOR
°F
on/off
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
Calibration
Your thermostat allows the ability to slightly adjust the display temperature.
Normally this is not recommended nor required. However, in special
circumstances this may be necessary, and can be done as follows:
1. Press the OPTIONS button and hold for 1 second.
2. Press the OPTIONS button again until CAL shows on the display
with the current sensor temperature and the current offset value.
The offset value is factory set to zero.
3. Press the down or up button to adjust this.
4. Press the HOLD/RETURN button to return to the normal
operating mode.
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
4. Additional Setups
Air Sensing and Regulator Modes
Your thermostat is factory set to operate based on the oor sensor
temperature. This is the recommended method to properly control your oor
warming system.
However, it is also possible to operate your thermostat in either the air sensing
mode or regulator mode temporarily if the oor sensor was damaged or not
installed. A new oor sensor should be installed to enable operation in Floor
Sense Mode as soon as possible. These modes must be used with caution to
avoid overheating the oor.
• Air Sensing Mode – This operates by an air sensor inside the thermostat.
You must set a Floor Limit temperature to avoid overheating the oor coverings
(see Floor Limit below). Note: the internal heating in the thermostat may
affect the sensor temperature.
• Regulator Mode– In this mode the user selects the amount of time the
oor warming system heats during a 15-minute repeating cycle. There is no
temperature sensing in this mode. (see section 5 “Operation”)
If you want it to operate in the air sensing mode or regulator mode, you may
change this as follows:
1. Press the OPTIONS button and hold for 1 second.
2. Press the OPTIONS button again until SENS shows on the
display.
3. Press the down or up button to toggle this to Air or rEGu.
4. Press the HOLD/RETURN button to return to the normal
operating mode.
Floor Limit
If you set your thermostat to operate in Air Sense Mode, the display will show
the air temperature but will also monitor the oor sensor if it is connected.
To avoid possibly overheating your oor, you must set a Floor Limit temperature
so it turns off the system if the oor sensor temperature exceeds this Floor
Limit. Some wood and laminate oor manufacturers recommend a maximum
of 82 to 84°F (27° to 28°C). Check with manufacturer. It is factory set to 99F
(37C) and can be adjusted as follows:
1. Press the OPTIONS button and hold for 1 second.
2. Press the OPTIONS button again until SET TEMP and FLOOR
LIMIT shows on the display with the current Floor Limit temperature.
3. Press the down or up button to adjust this.
4. Press the HOLD/RETURN button to return to the normal operating
mode.
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
Resetting Factory Defaults
Your thermostat has the ability to reset all settings to the factory defaults. If
you are certain you want to do this:
1. Press the OPTIONS button and hold for 1 second.
2. Press the OPTIONS button again until the software version
Soft 1.0 or similar shows on the display.
3. Press the down and up buttons at the same time and hold
for 1 second. Done and rst will show on the display. The
thermostat will go through a startup mode and return to the
normal operating mode.
5. Operation
Controlling the Temperature
Your thermostat has several ways to control your oor warming system.
Adjust the Temperature
1. Press the down or up button and hold for 1 second. The setpoint
temperature should be blinking.
2. Press the down or up button again to adjust the temperature.
3. Press the HOLD/RETURN button or wait 5 seconds and the thermostat will
return to the normal operating mode, saving your adjustment.
Setback
You can use the Setback button to override the current setpoint temperature.
This is especially useful if you have an alternate temperature you repeatedly
select when you are away.
1. Press the SETBACK button briey. SETBACK will show on the
display and its temperature.
2. To cancel this Setback temperature and return to the normal
temperature, press the SETBACK button briey.
To change the temperature stored in the SETBACK button:
1. Press the SETBACK button and hold for 1 second. SETBACK will show on
the display and its temperature should be blinking.
2. Press the down or up button to adjust the temperature.
3. Press the HOLD/RETURN button or wait 5 seconds and the thermostat will
return to the normal operating mode, saving your adjustment.
Remote Control Override
If your thermostat was installed with Remote Control input from a home
automation system (see section 2 “Installation”), this will override the
thermostat when the remote control system closes its output switch or relay.
SETBACK will show on the display and it will operate in the Setback
temperature indenitely. To cancel this, the Remote Control switch or relay
must be opened.
Regulator Mode
If you set your thermostat to operate in the regulator mode, it will operate like
a timer. You may adjust the amount of time the oor warming system heats
during a 15-minute repeating cycle as follows:
1. With the thermostat in the regulator mode, it will show the
heating time and the current cycle time.
2. Press the down or up button to adjust the heating time from 0
through 15.
• Example: A value of 6 will cause it to heat for 6 minutes of
the 15 minute cycle, and then not heat for 9 minutes of the 15
minute cycle.
• Zero will cause it to never heat.
• 15 will cause it to heat continuously.
3. The cycle time shown at the bottom of the display is the current time in the
15-minute cycle. It repeats from 0:00 through 14:59 (min:sec).
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
MO
M
A
SET TEMP
LIMIT
FLOOR
°F
MO
°C
AIR
SET TEMP
SET BACK
LIMIT
FLOOR
USAGE
CYCLE
M
A
M
P
M
A
M
P
°C
°F
°C
°F
TU WE TH FR SA SU
HOLD
GFCI
TRIP
HEATING
°F
P1
P2
P3
P4
LOCK
HEATING
MO
SET TEMP
CYCLE
M
A
°F
HOLD
USAGE
MO
CYCLE
M
A
°F
TU WE TH FR
°F
SET BACK
FLOOR
FLOOR
°F
FLOOR
into the box with the mounting screws provided.
3. Carefully snap the Front Module onto the Power Module. Be careful not
to bend or damage the 14-pin electrical connector on the back of the Front
Module.
4. Tighten the screw.
5. Switch on the power at the main circuit panel.
NOTE to contractors: After installing the thermostat, be sure to:
a. Do a Quick Setup (section 3),
b. Temporarily override the setpoint temperature to make sure it is
heating for a few minutes (section 5),
c. Test the GFCI (section 5).

Lockout Feature
Your thermostat has the ability to lock out adjustment by other users. This
may be useful in public locations. Only the on/off switch and the GFCI test
button will then operate.
1. Press the down and up button at the same time and hold for 1 second.
LOCK will show on the display.
2. To cancel this lockout, the down and up button must be pressed and held
for 1 second. The thermostat will return to the normal operating mode.
Test the GFCI
There is a GFCI (Ground Fault Circuit Interrupter) inside the thermostat. It
is designed to help protect people from possible electrical shock if the oor
warming system has been damaged.
To make sure the GFCI is operating, test it after it is installed and once each
month:
1. Make sure the thermostat is HEATING. You may need to increase the
setpoint temporarily.
2. Press the GFCI Test button on the side of the thermostat. GFCI TRIP
should show on the display and a red light will show next to the GFCI Test
button. You should also hear a click, indicating power has been removed
from the oor warming system. If any of these indicators fail, turn off the
thermostat and replace it. Do not continue to use.
3. To reset the GFCI, slide the On/Off switch off and back on. If the GFCI does
not reset, turn the thermostat off and go to section 6 “Troubleshooting” for
help.
7. Specications
Power Supply 120/240 VAC, 50/60 Hz
Maximum Load 15 amps, resistive
Maximum Power 1800 watts at 120 VAC
3600 watts at 240 VAC
GFCI Class A (5 milliamp trip)
Display Range 32 °F to 140 °F (0 °C to 60 °C)
Setting Range 40 °F to 99 °F (4 °C to 37 °C)
Accuracy ± 0.9 °F (0.5 °C)
Storage Temp 0 °F to 120 °F (0 °C to 49 °C)
Sensor Thermistor, 10k NTC, double-insulated
Memory Settings retained indenitely
ETL Listing Control No. 3037530
Conforms to UL 873, UL 943, CSA C22.2 No.
24, and CAN/CSA C22.2 No. 144
Limited Warranty
Watts Radiant, Inc. warrants this thermostat control and sensor (the product)
to be free from defects in material and workmanship for a period of (2) years
from the date of original purchase from authorized dealers. During this period,
Watts Radiant, Inc. will replace the product or refund the original cost of the
product at Watts Radiant’s option, without charge, if the product is proven
defective in normal use. Please return the thermostat to your distributor to
begin the warranty process.
This limited warranty does not cover shipping costs. Nor does it cover a
product subjected to misuse or accidental damage. This warranty does not
cover the cost of installation, diagnosis, removal or reinstallation, or any
material costs or loss of use.
This limited warranty is in lieu of all other warranties, obligations, or liabilities
expressed or implied by the company. In no event shall Watts Radiant, Inc.
be liable for consequential or incidental damages resulting from installation
of this product. Some states or provinces do not allow limitations on how
long an implied warranty lasts, or the exclusion or limitation of incidental or
consequential damages, so the above exclusions or limitations may not apply
to you. This warranty gives you specic legal rights and you may also have
other rights that vary from state to state.
6. Troubleshooting
Problem Solution
Thermostat works
but no heat from the
system.
1. Check wiring connections.
2. If GFCI is tripped, reset thermostat with on/off switch.
3. Check resistances on oor warming system. See
manual for system.
No display.
1. Check wiring connections.
2. Check circuit breaker or other protection “upstream” of
thermostat.
3. Check the 14-pin connection on the back of the Front
Module. Sometimes the pins can become misaligned when
connecting the Front Module to the Power Module.
GFCI is tripped.
1. Check wiring connections.
2. Reset thermostat by switching off/on.
3. Check resistances on oor warming system. See
manual for system.
Er 1 (only at startup) Floor sensor not correct type or out of range. Check oor
sensor resistance.
Er 2 Floor sensor short-circuited. Replace sensor or Reset
Factory Defaults (section 4).
Er 3 Floor sensor not attached and thermostat in oor sense mode. Turn off power at circuit breaker and attach sensor.
Or Reset Factory Defaults (section 4).
Er 4 or Er 5 Internal air sensor is faulty. Replace thermostat or
operate in oor sense mode.
Er 6
Internal temperature overlimit. Make sure sunlight is
not directed at the thermostat or other heat source in
proximity. Otherwise, turn off power at breaker and
contact factory.
Er 7
1. Check the 14-pin connection on the back of the Front
Module. Sometimes the pins can become misaligned when
connecting the Front Module to the Power Module.
2. “End-of-life” indication. GFCI will no longer function
correctly or safely. Reset circuit breaker, otherwise replace
thermostat.
PPLIMP08004 IND © 2007-2011
IOM-WR-SS-NonPro-EN 1125 Effective: 07/01/2011