DIY D12 Manual De Instalación página 9

Phase 2 - Electrical Rough-in
To prevent the risk of personal injury and/or death, make sure power is not
applied to the product until it is fully installed and ready for final testing. All
work must be done with power turned off to the circuit being worked on.
STEP 2.1:
Circuit Breaker (Overcurrent Protection)
Floor heating Mat(s) must be protected against overload by a circuit breaker. GFCI type (ground
fault circuit interrupter) or AFCI type (arc-fault circuit interrupter) breakers may be used if
desired, but are not necessary when using SunStat controls with integral GFCI
The rating of the breaker (see Table 5) is determined by the amp draw of the heating mats.
Add the amp ratings of all mats to be connected to the SunStat control (see Table 2 or the
Nameplate Label on the mat). If the total is less than 12 amps, use a 15 or 20 A breaker
(preference is 15 A). If the total is between 12 and 15 amps, use a 20 A breaker. If the total
is over 15 A, another circuit will be required with its own breaker and SunStat control.
It may be possible to tap into
an existing circuit as long as
there is adequate capacity for
the mat(s) and any additional ap-
pliance, such as a hair dryer or
vacuum cleaner. Avoid circuits
which have lighting, motors,
exhaust fans, or hot tub pumps
due to possible interference.
STEP 2.2:
Install Electrical Boxes
SunStat thermostat:
Install an extra-deep electrical box for the SunStat thermostat. Follow the instructions included
with the thermostat for complete information on location and wiring.
Junction Boxes:
If a mat is to be located so its Power lead is not long enough to reach the SunStat control
directly, a junction box must be installed. Do not attempt to make a connection to other wiring
without a junction box. Use a standard junction box with a cover, mounting it below the subfloor,
in the attic, in the wall, or in another location easily accessible after all coverings are complete.
If the SunTouch sensor wire is not long enough to reach the SunStat control directly, it may
be extended. A junction box may be required by local code to make this connection. Follow
the installation instructions included with the SunStat control for details.
For construction with an existing wall or where the wall is covered, cut the necessary openings
to mount the electrical boxes listed above. Wait to install the boxes until all wiring is fed into
these locations to make it easier to pull the wire.
Table 5
Circuit Breakers and Supply Wire
Mat(s)
VAC total amps
120 up to 12 amps
120 up to 15 amps
240 up to 12 amps
240 up to 15 amps
* Recommended only. Follow local codes for wire gauge size.
** SP= single-pole, DP=double-pole
9 of 96
Supply Wire
(AWG)* qty type**
14 1
12 1
14 1
12 1
Breaker
rating
SP 15 or 20 A
SP 20 A
DP 15 or 20 A
DP 20 A
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