Manual

STEP 1.1: Install GFCI Breaker
(Overcurrent Protection)
The SunTouch mat must be protected
by a ground fault circuit interrupter
(GFCI).Thiscanbedoneeitherbythe
internalGFCIintheSunTouchSunStat
(as long as it directly controls the mat)
oranindicating-typeGFCI
circuitbreaker.ThisGFCIservesasa
local disconnect.
Note: Follow all local building and
electrical codes.
Note: It is possible to branch from
an existing circuit, but this is not
recommended. Please consult with a
qualified electrician to determine if
the circuit can handle the load and
ifthecircuitisGFCI-protected.
 Thesizeofthebreakerisdetermined
by the total square footage of heating
mat.(Dependingonlocalcodes,you
may need multiple breakers for systems
larger than 20 amps.)
Typical Amperage Requirement:
120 VAC SunTouch mats:
0.1 amps per sq.ft., or
10 amps per 100 sq.ft. of mat.
240 VAC SunTouch Mats:
0.05 amps per sq.ft., or
5 amps per 100 sq.ft. of mat.
STEP 1.2: Install Secondary Slave
Unit (SunStat Relay)
 Dependingontheamperagerequire-
ments of the mat(s), an secondary slave
unit (SunStat Relay) may be required.
Seepage17forconnectiondiagram.Do
not load the SunStat control with more
than 15 amps. Be sure to protect this
contactorcircuitwithaGFCIbreaker.
STEP 1.3: Install Electrical Boxes
Thermostats are usually located near
the power leads. However, they can
be located almost anywhere, because
the power leads and the sensor wire can
be routed to electrical junction boxes
and extended to a location outside the
heated room (such as a utility room or
basement).
Thermostat: Install a 4”-square,
2-1/8” deep electrical box with a
1-gang mud ring. Electrical boxes should
be located on interior walls, typically
60” from the floor, according to NEC or
other local code requirements.
Note: The SunStat sensor wire
can be extended up to a maximum of
50’, if necessary.
STEP 1.4: Bottom Plate Work
 Drillorsawholesatthebottom
plate as indicated at right. One hole is
for routing the power leads or conduit
and the other is for the thermostat
sensor. These holes should be directly
below the electrical box(es) (see pho-
tos at right).
STEP 1.5: Install Power Lead
Conduit and Thermostat Sensor
Power Lead Conduit: The shielded
power lead can be installed with or with-
out electrical conduit depending on code
requirements. In either case, remove
one of the knock-outs in the 4” box to
route the lead. If electrical conduit is
not required by code, install a wire col-
lar to secure the leads where they enter
the box. If conduit is required by code,
install 1/2” (minimum) conduit from the
bottom plate up to the electrical box. For
multiple power leads (multiple mats)
install 3/4” conduit, which will accom-
modate multiple power leads.
Thermostat Sensor: A floor sensor
comes with our SunStat control. It can
be installed in a conduit separate from
the electrical power lead although this
is not necessary. Open a second knock-
out in the bottom of the thermostat box.
Feed the sensor (and conduit) through
the knock-out, down through the cut-out
in the bottom plate, and out into the floor
where the heating mat will be installed.
If you have the thermostat and sensor,
install the sensor now, but wait to install
the thermostat until after the mat is
installed.
Note: The sensor is located in the
thermostat packaging.
STEP 1.6: Rough-in Wiring
Install appropriate electrical wire
(conductor) from the power source and
breaker protection to the thermostat
followingallcodes.Leave6”–8”extra
wire at the thermostat box. Refer to the
TypicalWiringDiagramsattheendof
this manual for help.
Phase 1. Electrical Rough-in Refer to all drawings on pages 11, 16, and 17 before beginning electrical work.
SunTouch Space Warming Manual 5
Power lead
conduit
Power
lead
conduit
Floor sensor
conduit
Power lead
NailTite
Wire Clip
Sensor wire
Power lead
Sensor
wire
Mat Amperage Requirements
 MatSize SquareFootage Resistance AmpDraw
120 VAC, 1-ft.-wide mats
1’ x 10’ 10 sq. ft. 101-124 1.0
1’ x 15’ 15 sq. ft. 73-89 1.5
1’ x 20’ 20 sq. ft. 48-59 2.0
1’ x 25’ 25 sq. ft. 39-48 2.5
1’ x 30’ 30 sq. ft. 30-36 3.0
120 VAC, 2-ft.-wide mat
2’ x 5’ 10 sq. ft. 102-125 1.0
2’ x 7’-6” 15 sq. ft. 71-87 1.5
2’ x 10’ 20 sq. ft. 49-60 2.0
2’ x 12’-6” 25 sq. ft. 39-48 2.5
2’ x 15’ 30 sq. ft. 30-37 3.0
2’ x 17’-6” 35 sq. ft. 25-31 3.5
2’ x 20’ 40 sq. ft. 22-27 4.0
2’ x 22’-6” 45 sq. ft. 19-23 4.5
2’ x 25’ 50 sq. ft. 17-21 5.0
2’ x 30’ 60 sq. ft. 14-17 6.0
2’ x 35’ 70 sq. ft. 12-14 7.0
2’ x 40’ 80 sq. ft. 11-13 8.0
120 VAC, 3-ft.-wide mat
3’ x 5’ 15 sq. ft. 71-87 1.5
3’ x 6’-8” 20 sq. ft. 49-59 2.0
3’ x 8’-4” 25 sq. ft. 39-48 2.5
3’ x 10’ 30 sq. ft. 30-36 3.0
3’ x 15’ 45 sq. ft. 19-23 4.5
3’ x 20’ 60 sq. ft. 14-17 6.0
______________________________________________
240 VAC, 2-ft.-wide mat
2’ x 10’ 20 sq. ft. 206-252 1.0
2’ x 15’ 30 sq. ft. 148-180 1.5
2’ x 20’ 40 sq. ft. 98-120 2.0
2’ x 25’ 50 sq. ft. 79-97 2.5
2’ x 30’ 60 sq. ft. 60-64 3.0
2’ x 35’ 70 sq. ft. 50-62 3.5
2’ x 40’ 80 sq. ft. 43-53 4.0
2’ x 45’ 90 sq. ft. 38-47 4.5
2’ x 50’ 100 sq. ft. 34-42 5.0
2’ x 60’ 120 sq. ft. 28-35 6.0
2’ x 70’ 140 sq. ft. 24-29 7.0
2’ x 80’ 160 sq. ft. 22-27 8.0
240 VAC, 3-ft.-wide mat
3’ x 10’ 30 sq. ft. 144-176 1.5
3’ x 13’-4” 40 sq. ft. 97-118 2.0
3’ x 16’-8” 50 sq. ft. 78-95 2.5
3’ x 20’ 60 sq. ft. 60-74 3.0
3’ x 30’ 90 sq. ft. 38-47 4.5
3’ x 40’ 120 sq. ft. 28-35 6.0
(ohms)