Installation Guide
26 SPACE HEATING
Discussion on use of Schluter
®
-DITRA-HEAT for space heating
SPACE HEATING
QUESTION: Can I use DITRA-HEAT to heat my bathroom, kitchen, or other areas in the
home?
ANSWER: It is possible, but full analysis of the application by a HVAC professional is required:
Schluter
®-
DITRA-HEAT is intended to warm tile floors and make them more comfortable underfoot, but can contribute to space heating. As the
tile covering warms up, it will radiate heat to the surrounding objects in the room and increase the ambient temperature.
The amount of heat required to achieve a comfortable room temperature depends on many variables, including but not limited to the following.
• Starting temperature and target temperature
• Size of room and height of the ceiling
• Heat loss through walls, windows, and doors according to size and R-value of the components
• Total area heated
All of these variables must be considered to calculate the required heat output of the system and determine if the system can meet the needs
of the owner.
Schluter Systems does not perform heating load calculations as a service for customers and recommends that a HVAC professional is consulted
to perform such an analysis. However, Schluter Systems does provide the heating cable output to aid in these calculations, as shown below.
Heating cables
Item No. Total Power Area*
Power*
(BTU/hr)
120 V
DHE HK 120 11 135 W 10.7 ft
2
(0.99 m
2
) 460.64
DHE HK 120 16 203 W 16.0 ft
2
(1.5 m
2
) 692.66
DHE HK 120 21 270 W 21.3 ft
2
(1.98 m
2
) 921.28
DHE HK 120 27 338 W 26.7 ft
2
(2.5 m
2
) 1153.30
DHE HK 120 32 405 W 32.0 ft
2
(3.0 m
2
) 1381.92
DHE HK 120 38 475 W 37.5 ft
2
(3.5 m
2
) 1620.77
DHE HK 120 43 540 W 42.7 ft
2
(4.0 m
2
) 1842.56
DHE HK 120 51 650 W 51.4 ft
2
(4.78 m
2
) 2217.89
DHE HK 120 64 815 W 64.4 ft
2
(6.0 m
2
) 2780.90
DHE HK 120 73 920 W 72.7 ft
2
(6.75 m
2
) 3139.17
DHE HK 120 83 1055 W 83.3 ft
2
(7.7 m
2
) 3599.81
DHE HK 120 92 1160 W 91.7 ft
2
(8.5 m
2
) 3958.08
DHE HK 120 102 1290 W 101.9 ft
2
(9.5 m
2
) 4401.66
DHE HK 120 113 1425 W 112.6 ft
2
(10.46 m
2
) 4862.30
DHE HK 120 134 1700 W 134.3 ft
2
(12.48 m
2
) 5800.64
*Values based on specified 3-stud cable spacing
*Values based on specified 3-stud cable spacing
240 V
DHE HK 240 11 135 W 10.7 ft
2
(0.99 m
2
) 460.64
DHE HK 240 16 203 W 16.1 ft
2
(1.50 m
2
) 692.66
DHE HK 240 21 270 W 21.4 ft
2
(2.0 m
2
) 921.28
DHE HK 240 27 338 W 26.7 ft
2
(2.48 m
2
) 1153.30
DHE HK 240 32 405 W 32.0 ft
2
(3.0 m
2
) 1381.92
DHE HK 240 38 475 W 37.5 ft
2
(3.48 m
2
) 1620.77
DHE HK 240 43 540 W 42.6 ft
2
(3.96 m
2
) 1842.56
DHE HK 240 53 675 W 53.3 ft
2
(5.0 m
2
) 2303.20
DHE HK 240 64 810 W 64.0 ft
2
(5.95 m
2
) 2763.83
DHE HK 240 75 950 W 75.1 ft
2
(7.0 m
2
) 3241.53
DHE HK 240 85 1080 W 85.3 ft
2
(7.92 m
2
) 3685.11
DHE HK 240 103 1300 W 102.7 ft
2
(9.54 m
2
) 4435.78
DHE HK 240 129 1630 W 128.8 ft
2
(12.0 m
2
) 5561.79
DHE HK 240 145 1840 W 145.3 ft
2
(13.50 m
2
) 6278.34
DHE HK 240 167 2110 W 166.7 ft
2
(15.5 m
2
) 7199.62
DHE HK 240 183 2320 W 183.3 ft
2
(17.03 m
2
) 7916.17
DHE HK 240 204 2580 W 203.8 ft
2
(18.9 m
2
) 8803.33
DHE HK 240 225 2850 W 225.2 ft
2
(20.92 m
2
) 9724.60
DHE HK 240 269 3400 W 268.6 ft
2
(25.0 m
2
) 11601.28
Heating cables
Item No. Total Power Area*
Power*
(BTU/hr)