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The SunTouch mat must be pro-tect-

ed by a ground fault circuit interrupter
(GFCI). This can be done either by the
internal GFCI in the SunTouch FloorStat
(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.

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Depending on the amperage require-

ments of the mat(s), an external contac-
tor may be required. Consult with an
electrician to determine the type and size
of contactor. Do not load the FloorStat
control with more than 15 amps. Be sure
to protect this contactor circuit with a
GFCI breaker.

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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). 

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Install a 4"-square, 

2-1/8" deep electrical box with a 
1-gang mud ring. Electrical boxes
should be located on interior walls, typi-

cally 60" from the floor, according to
NEC or other local code requirements.

Note: The FloorStat sensor wire 

can be extended up to a maximum of 
50', if necessary. 

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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 photos at right).

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The armored

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 collar 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.

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A floor sensor

comes with our FloorStat control. It can
be installed in a conduit separate from
the electrical power lead although this is
not necessary. If a conduit is installed,
the tip of the conduit should be metallic
in order for the sensor to give a true
temperature reading. Open a second
knock-out in the bottom of the thermo-
stat 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.

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Install appropriate electrical wire

(conductor) from the power source and
breaker protection to the thermostat fol-
lowing 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.

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Mat Size

Square Footage

Amp Draw

112

20

0  V

VA

AC

C,,  112

2""--w

wiid

dee  m

ma

att

12" x 10'

10 sq. ft.

1.0

12" x 15'

15 sq. ft.

1.5

12" x 20'

20 sq. ft.

2.0

12" x 25'

25 sq. ft.

2.5

12" x 30'

30 sq. ft.

3.0

12" x 35'

35 sq. ft.

3.5

12" x 40'

40 sq. ft.

4.0

12" x 45'

45 sq. ft.

4.5

12" x 50'

50 sq. ft.

5.0

112

20

0  V

VA

AC

C,,  2

24

4""--w

wiid

dee  m

ma

att

24" x 5'

10 sq. ft.

1.0

24" x 10'

20 sq. ft.

2.0

24" x 15'

30 sq. ft.

3.0

24" x 20'

40 sq. ft.

4.0

24" x 25'

50 sq. ft.

5.0

24" x 30'

60 sq. ft.

6.0

24" x 35'

70 sq. ft.

7.0

24" x 40'

80 sq. ft.

8.0

112

20

0  V

VA

AC

C,,  3

36

6""--w

wiid

dee  m

ma

att

36" x 5'

15 sq. ft.

1.5

36" x 6'8"

20 sq. ft.

2.0

36" x 8'4"

25 sq. ft.

2.5

36" x 10'

30 sq. ft.

3.0

36" x 15'

45 sq. ft.

4.5

36" x 20'

60 sq. ft.

6.0

______________________________________________

2

24

40

0  V

VA

AC

C,,  112

2""--w

wiid

dee  m

ma

att

12" x 20'

20 sq. ft.

1.0

12" x 30'

30 sq. ft.

1.5

12" x 40'

40 sq. ft.

2.0

12" x 50'

50 sq. ft.

2.5

2

24

40

0  V

VA

AC

C,,  2

24

4""--w

wiid

dee  m

ma

att

24" x 10'

20 sq. ft.

1.0

24" x 15'

30 sq. ft.

1.5

24" x 20'

40 sq. ft.

2.0

24" x 25'

50 sq. ft.

2.5

24" x 30'

60 sq. ft.

3.0

24" x 35'

70 sq. ft.

3.5

24" x 40'

80 sq. ft.

4.0

24" x 45'

90 sq. ft.

4.5

24" x 50'

100 sq. ft.

5.0

24" x 60'

120 sq. ft.

6.0

24" x 70'

140 sq. ft.

7.0

24" x 80'

160 sq. ft.

8.0

2

24

40

0  V

VA

AC

C,,  3

36

6""--w

wiid

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ma

att

36" x 10'

30 sq. ft.

1.5

36" x 13'4"

40 sq. ft.

2.0

36" x 16'8"

50 sq. ft.

2.5

36" x 20'

60 sq. ft.

3.0

36" x 30'

90 sq. ft.

4.5

36" x 40'

120 sq. ft.

6.0

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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

Summary of Contents for D12 series

Page 1: ...hen installing our product just give us a call We re here to help 8 8 8 8 8 8 4 4 3 3 2 2 8 8 9 9 3 3 2 2 w w w w w w s s u u n n t t o o u u c c h h n n e e t t S Sp pa ac ce e W Wa ar rm mi in ng g...

Page 2: ...falls below the mat s capabilities Please refer to specific design information provided for heat ing applications especially when installing non masonry flooring materials The designer must determine...

Page 3: ...ed ceramic tile mortar N NE EV VE ER R forget to install the floor sensor if using the SunTouch FloorStat Control N NE EV VE ER R install mats under cabinets or other built ins Excessive heat will bui...

Page 4: ...mat is fastened to the floor after floor coverings are installed Also checking these measurements often during tile installation is highly recommended to avoid burying a damaged wire C Ch he ec ck ki...

Page 5: ...ox 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...

Page 6: ...beds 3 8 1 2 Self leveling mortar beds 1 4 1 2 No matter the application always install SunTouch before installing mortar or cement Do not lay SunTouch in wet mortar We strongly recommend installing...

Page 7: ...ti io on n M Me em mb br ra an ne e Install the SunTouch above the membrane whenever possible unless rec ommended otherwise by the membrane manufacturer I In ns su ul la at ti io on n Do not install r...

Page 8: ...utions that must be observed see pg 13 for more details 1 Never install SunTouch in shower walls or any other wall 2 Never make a field splice to mats installed in shower Do not attempt to repair or m...

Page 9: ...of the toilet if need be approximately 20 from wall SunTouch Space Warming Manual 9 F Fi il ll l i in n T Te ec ch hn ni iq qu ue e U Us se e c cl li ip ps s o or r h ho ot t g gl lu ue e t to o a at...

Page 10: ...av ve e t th he e s se en ns so or r i in nt to o t th he e m ma at t o or r y yo ou u m ma ay y p pr re ef fe er r t to o u us se e a a c cl li ip p S ST TE EP P 4 4 1 1 I In ns st ta al ll l t th h...

Page 11: ...8 88 8 4 43 32 2 8 89 93 32 2 SunTouch Space Warming Manual 11 A Ap pp pe en nd di ix x I In ns st ta al ll la at ti io on n O Ov ve er rv vi ie ew w 4 square electrical box Bottom plate cut outs Powe...

Page 12: ...Up to New Positon Cut Cut Cut 9 90 0 o or r F Fl li ip p T Tu ur rn n R Ro ol ll l o ov ve er r T Tu ur rn n 1 18 80 0 o or r B Ba ac ck k t to o B Ba ac ck k T Tu ur rn n F Fi il ll l i in n T Te ec...

Page 13: ...net The heat only conducts about 1 1 2 from the wire Install mats 4 6 away from wax ring 18 20 from back wall Fill in triangular areas by removing wire from mat and fastening with wire clips Do not be...

Page 14: ...on ne e 1 12 2 x x 3 35 5 m ma at t T Ty yp pi ic ca al l m mu ud dr ro oo om m l la ay yo ou ut t T Tw wo o 3 36 6 x x 1 10 0 m ma at ts s C Co on nt tr ro ol l Install mats right up to the face of a...

Page 15: ...to o i in ns si id de e h ho ou us se e B Ba at th h T Tu ub b V Va an ni it ty y S Sm ma al ll l b ba at th h l la ay yo ou ut t 1 1 O On ne e 3 36 6 x x 5 5 m ma at t F Fr ro on nt t e en nt tr ry y...

Page 16: ...120V Typical Electrical Wiring Diagram with FloorStat Controller and Contactor 120V 120V Control back Line Black Neutral White Ground Bare or Green Load Black Load White Mat Green Mat Black Mat White...

Page 17: ...e Blue Ground Bare or Green Load Black Load Red Mat Green Mat Black Mat Blue Control Black Control Red Upper terminals not used for sensor Sensor Wire no polarity Sensor Contactor 240V Coil All electr...

Page 18: ...us se e An analog type ohm meter was used has a needle indicator If measurement is showing an open or short circuit cable has been damaged If measurement is just a little low or high room temperature...

Page 19: ...S WARRANTY UNLESS SUCH EXTENSION OR MODIFICATION IS MADE IN WRITING BY A CORPORATE OFFICER DUE TO DIFFERENCES IN BUILDING AND FLOOR INSULATION CLIMATE AND FLOOR COVERINGS WATTS RADIANT MAKES NO REPRES...

Page 20: ...06 67 7 F Fa ax x 2004 Watts Radiant SunTouch Space Warming Manual LIT STSPCMAN0404 Effective 04 08 2004 U S and foreign patents and trademarks applied for SunTouch SunTouch like a walk on the beach...

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