Install Instructions

203
IM-PR 566442 1114 (Design Manual)
Slab on Grade Upward Heat Flux (Btu/hr/ft²)
T
w
(°F)
R
ff
=0 R
ff
=0.5 R
ff
=1.0 R
ff
=1.5 R
ff
=2.0
6"
o.c.
9"
o.c.
12"
o.c.
6"
o.c.
9"
o.c.
12"
o.c.
6"
o.c.
9"
o.c.
12"
o.c.
6"
o.c.
9"
o.c.
12"
o.c.
6"
o.c.
9"
o.c.
12"
o.c.
80 13.6 12.0 10.6 8.5 8.0 7.4 6.4 6.0 5.6 5.0 4.8 4.6 4.1 4.0 3.8
85 19.2 17.0 15.0 12.1 11.4 10.5 9.0 8.5 8.0 7.1 6.8 6.5 5.8 5.6 5.4
90 24.9 22.0 19.4 15.6 14.7 13.6 11.7 11.0 10.3 9.2 8.8 8.4 7.5 7.3 7.0
95 30.5 27.0 23.8 19.2 18.1 16.7 14.3 13.5 12.7 11.3 10.8 10.3 9.2 8.9 8.6
100 36.2 32.0 28.2 22.7 21.4 19.8 17.0 16.0 15.0 13.4 12.8 12.2 10.9 10.6 10.2
105 41.8 37.0 32.6 26.3 24.8 22.9 19.6 18.5 17.4 15.5 14.8 14.1 12.6 12.2 11.8
110 47.5 42.0 37.0 29.8 28.1 26.0 22.3 21.0 19.7 17.6 16.8 16.0 14.3 13.9 13.4
115 53.1 47.0 41.5 33.4 31.5 29.1 24.9 23.5 22.1 19.7 18.8 17.9 16.0 15.5 15.0
120 58.8 52.0 45.9 36.9 34.8 32.2 27.6 26.0 24.4 21.8 20.8 19.8 17.7 17.2 16.6
125 64.4 57.0 50.3 40.5 38.2 35.3 30.2 28.5 26.8 23.9 22.8 21.7 19.4 18.8 18.2
130 70.1 62.0 54.7 44.0 41.5 38.4 32.9 31.0 29.1 26.0 24.8 23.6 21.1 20.5 19.8
135 75.7 67.0 59.1 47.6 44.9 41.5 35.5 33.5 31.5 28.1 26.8 25.5 22.8 22.1 21.4
140 81.4 72.0 63.5 51.1 48.2 44.6 38.2 36.0 33.8 30.2 28.8 37.4 24.5 23.8 23.0
145 87.0 77.0 67.9 54.7 51.6 47.7 40.8 38.5 36.2 32.3 30.8 29.3 26.2 25.4 24.6
150 92.7 82.0 72.3 58.2 54.9 50.8 43.5 41.0 38.5 34.4 32.8 31.2 27.9 27.1 26.2
155 98.3 87.0 76.7 61.8 58.3 53.9 46.1 43.5 40.9 36.5 34.8 33.1 29.6 28.7 27.8
160 104.0 92.0 81.1 65.3 61.6 57.0 48.8 46.0 43.2 38.6 36.8 35.0 31.3 30.4 29.4
Table F-2 Upward heat flux (qu) for a slab on grade, given as a function of finished floor R-value (Rff),
tubing spacing (6, 9 or 12" on center) and average water temperature in tubing (Tw). Assumes 68°F room
temperature and adequate insulation.
Climate Trak or Heat Transfer Plates Upward Heat Flux (Btu/hr/ft²) for Tubing Spacing of 8" o.c.
T
w
(°F) R
ff
=0 R
ff
=0.5 R
ff
=1.0 R
ff
=1.5 R
ff
=2.0
80 6.2 5.0 4.1 3.5 3.1
85 8.8 7.1 5.8 4.9 4.4
90 11.4 9.2 7.5 6.4 5.7
95 14.0 11.3 9.2 7.8 7.0
100 16.6 13.4 10.9 9.3 8.3
105 19.2 15.5 12.6 10.7 9.6
110 21.8 17.6 14.3 12.2 10.9
115 24.4 19.7 16.0 13.6 12.2
120 27.0 21.8 17.7 15.1 13.5
125 29.6 23.9 19.4 16.5 14.8
130 32.2 26.0 21.1 18.0 16.1
135 34.8 28.1 22.8 19.4 17.4
140 37.4 30.2 24.5 20.9 18.7
145 40.0 32.3 26.2 22.3 20.0
150 42.6 34.4 27.9 23.8 21.3
155 45.2 36.5 29.6 25.2 22.6
160 47.8 38.6 31.3 26.7 23.9
Table F-3 Upward heat flux (qu) for floor using Climate Trak or Heat Transfer Plates, given as function of
finished floor R-value (Rff), tubing spacing (8" on center) and average water temperature in tubing (Tw).
Assumes 68°F room temperature and adequate insulation.