User Guide
Applications manual
| 17
Panel Radiator
Design Manual
Panel Radiator Design Manual | 12.2009 Technical specications are subject to change without prior notice
5. Radiator Output Ratings
Outputs depend on panel radiator size, average water
temperature, and room temperature.
Four examples are presented below to illustrate a range
of options. If none of them applies, use Figure 10 and
Table 9 to determine output based on individual
requirements.
Tables 7 and 8 show the outputs of Model 21 and 22
in-stock radiators at four different water temperatures.
Use the high temperature column if restricted in wall
space. To maximize efciency in condensing boiler
applications, ensure the return water temperature drops
below the ue gas’ dew point of 131°F (55°C) for
signicant periods of the heating season.
2½
Radiator outputs in BTU/Hr:
Model 21: 2½" (63.5mm) deep Table 7
Output BTU/hr
Supply 194°F (90°C) 176°F (80°C) 158°F (70°C) 140°F (60°C) Part Number
Delta T 36°F (20°C) 36°F (20°C) 18°F (10°C) 18°F (10°C)
12"x24"x2½"
1900 1500 1300 1000 3-41224
12"x36"x2½"
2900 2300 2000 1400 3-41236
12"x48"x2½"
3800 3000 2600 1900 3-41248
12"x59"x2½" 4700 3700 3200 2300 3-41259
12"x71"x2½" 5700 4500 4000 2900 3-41271
20"x24"x2½" 2800 2200 1900 1400 3-42024
20"x36"x2½" 4200 3300 2900 2100 3-42036
20"x48"x2½" 5600 4400 3900 2800 3-42048
20"x59"x2½" 7000 5500 4800 3500 3-42059
20"x71"x2½" 8400 6600 5800 4200 3-42071
24"x24"x2½" 3200 2500 2200 1600 3-42424
24"x36"x2½" 4900 3800 3400 2400 3-42436
24"x48"x2½" 6500 5100 4500 3200 3-42448
24"x59"x2½" 8100 6300 5600 4000 3-42459
24"x63"x2½" 8700 6800 6000 4300
24"x71"x2½" 9700 7600 6700 4800 3-42471
All values based on 68°F (20°C) room temperature.