The SunStat thermostat
is a simple way to control
an electric floor-warming
system. It is designed for
connection to normal
120-VAC home wiring.
PARTS INCLUDED
• SunStat thermostat
• Floor sensor (15' long wire)
• 2 screws for mounting in
electrical box
• 5 wire nuts for wiring connections
If any par ts are missing or damaged, contact the store
where you purchased the thermostat. Do not install a
damaged par t.
INSTALLATION
It is recommended that a qualified electrician install the
thermostat and follow all local electrical codes.
The thermostat must only be used to control a resistive
floor warming system. This system must not exceed
1800 watts (15 amps) at 120 V.
Locate the thermostat about 4-1/2' to 5' above the floor
on an interior wall away from direct sunlight and other
heat sources. Do not locate the thermostat on a wall
with hot-water or cold-water piping, or ducting in close
proximity. The floor sensor can be extended up to 50'
away from the thermostat with standard two-conductor
18-gauge wire (uncoiled). The floor sensor wire cannot
pass near high-voltage electrical appliances such as
electric water heaters, air conditioners or electric ranges.
Embed the sensor tip in the heated floor area, locating
it halfway between heating elements.
Install a single-gang extra-deep box (not a “gangable”
type) when only one mat will be connected to the thermo-
stat. In new construction, you may install a 4" square
box when more than one mat will be connected to the
thermostat. With a 4" square box, you will need to attach
a mud-ring or other filler plate to properly install the
thermostat.
Pull the round dial off the front. Gently pull the thin face-
plate from the face of the thermostat to reveal the holes
for the mounting screws provided.
SunStat
™
(Model 500700-120)
WIRING
Turn off the power to this electrical circuit at the breaker
panel. Do not turn it back on until connections are fin-
ished and protected.
Begin making connections on the back of the thermostat
with the wire nuts included using one of the following dia-
grams. Remember to connect the floor sensor wire!
Fig. 1.
Connection to a single set of mat leads.
Fig. 2.
Connection to more than one set of mat leads.
Note
: Do not connect more than 1800 watts (15 amps)
to the thermostat. Refer to your mat specifications for
information.
Note:
If the floor sensor is not connected to the thermo-
stat the thermostat will sense the air temperature in
front of it instead, becoming an air thermostat.
© 2004 Watts Radiant, Inc.
Installing the SunStat Control
LIT#SSTATINST1004
Effective 10/12/2004
Installing the SunStat
™
Control
4500 E. Progress Place
Springfield, MO 65803-8816
Phone: 888-432-8932/417-522-6128
Fax: 417-831-4067
Web: www.suntouch.net
