BTU Capacity Chart

®
RATINGS CHART – COMMERCIAL BASEBOARD
MULTI/PAK 80
SLANT/FIN CORPORATION, Greenvale, NY 11548 • Phone: [phone]
FAX: [phone] • In Canada: Slant/Fin LTD/LTEE, Mississauga, Ontario
www.slantfin.com
Model
Number
Element
Type
Tube
Size and
Material
Fin Size
and Material
Fins
per
Foot
Water
Flow
Pressure
Drop†
HOT WATER RATINGS
BTU/HR./FT. with 65˚F entering air
110˚F 120˚F 130˚F 140˚F 150˚F 160˚F 170˚F 180˚F 190˚F 200˚F 210˚F 220˚F
81 A H-1
3
⁄4" 3 x 3
1
⁄4" x .024" 48 1 GPM 47 210* 290* 360* 440* 520 610 700 790 880 970 1060 1140
copper aluminum 4 GPM 525 230* 300* 380* 460* 550 640 740 840 930 1030 1120 1200
83-A2 H-3
3
⁄4"2
3
⁄4" x 2
1
⁄2" x .011" 55 1 GPM 47 200* 270* 340* 410* 490 570 650 730 810 890 970 1050
copper aluminum 4 GPM 525 210* 290* 360* 440* 520 600 690 770 860 940 1030 1110
84-A3 H-4 1" 3" x 2
1
⁄2" x .011" 48 1 GPM 13 180* 240* 300* 370* 440 520 590 660 730 810 880 950
copper aluminum 4 GPM 145 190* 260* 320* 390* 470 550 620 700 770 860 930 1000
85-AX H-5X 1
1
⁄4" 3" x 3
1
⁄4" x .020" 48 1 GPM 6
1130
190* 260* 320* 390* 470 560 650 740 830 920 1010 1100
copper aluminum 4 GPM 63 200* 270* 340* 410* 500 590 690 780 890 970 1070 1160
86-AX H-6X 1
1
⁄4" IPS 3" x 3
1
⁄4" x .028" 48 1 GPM 3
990
380 450 520 590 660 730 800 870
steel aluminized steel 4 GPM 41 400 480 550 620 700 770 850 920
Steam
1 PSI‡
Btu/Hr.
Per Foot
† Millinches per foot. *Ratings at 140˚F and lower temperatures determined by multiplying 150˚F rating by the
applicable factor specified in Table E in the I=B=R Testing and Rating Standard for Baseboard radiation.
‡ With 65˚F entering air.
NOTE: Ratings are for element installed as per drawing shown in “Dimensional Data” window (open “Dimensional Data” window to view) with damper open, with
expansion cradles. Ratings are based on active finned length (5" to 6" less than overall length)and include 15% heating effect factor.
Ratings are also based on:
81-A: 3/4" nominal copper tubing with 3" x 3-1/4' x .024" aluminum fins spaced 48 per linear foot (unpainted);
83-A2: 3/4" nominal copper tubing with 2-3/4" x 2-1/2" x .011" aluminum fins spaced 55 per linear foot (unpainted);
84-A3: 1" nominal copper tubing with 3" x 2-1/2" x .011" aluminum fins spaced 48 per linear foot (unpainted);
85-AX: 1-1/4" nominal copper tubing with 3" x 3-1/4" x .020" aluminum fins spaced 48 per linear foot (unpainted);
86-AX: 1-1/4" IPS steel with 3" x 3-1/4" x .028" aluminized steel fins spaced 48 per linear foot (unpainted);
Use 4 gpm ratings only when flow is known to be equal to or greater than 4 gpm; otherwise, 1 gpm ratings must be used.