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| Max Pressure | 435 PSI | |
| Max Temperature | -256 to 392 F. | |
| Plate Material | AISI 316 Stainless | |
| Braze Material | 99.9% Copper | |
| Approval | Underwriters Laboraties |
| Model /Plates | Typical Output | Plate Area Sq. Ft | $ Trade | $ Dist 10+ |
| M18-6 | 25,000 | 2.4 | $254 | $190 |
| M18-10 | 50,000 | 4 | $310 | $232 |
| M18-14 | 70,000 | 5.6 | $366 | $274 |
| M18-20 | 90,000 | 8 | $452 | $339 |
| M-18-24 | 110,000 | 9.6 | $508 | $381 |
| M18-30 | 140,000 | 12 | $598 | $448 |
| L25-20 | 200,000 | 13.6 | $698 | $523 |
| L25-24 | 250,000 | 16.3 | $776 | $582 |
| L25-30 | 300,000 | 20.4 | $902 | $676 |
| L25-40 | 350,000 | 27.2 | $1074 | $805 |
| L25-50 | 450,000 | 34 | $1282 | $961 |
| L55-30 | 600,000 | 45 | $1659 | $1244 |
| L55-40 | 800,000 | 60 | $2036 | $1527 |
|
Plate Size | Port Size | |
| M-18 | 10.8 In. x 4.7 In. | 1 Inch M Pipe | |
| L-25 | 20.6 In. x 4.5 In. | 1-1/4 M Pipe | |
| L-55 | 20.6 In. x 10.2 In. | 2 Inch M Pipe |
| Snow Melt Mode |
Primary 180 In |
Primary 150 Out |
Glycol
95 In |
Glycol
125 Out |
| BTUH | Model | Hot Water GPM | Press Drop Hot PSI |
Press Drop Cool PSI |
| 30,000 | M18-6 | 2.0 | 5.2 | 2.8 |
| 60,000 | M18-10 | 4.1 | 5.2 | 4.0 |
| 90,000 | M18-14 | 6.2 | 5.3 | 4.6 |
| 130,000 | M18-20 | 9.0 | 5.0 | 4.8 |
| 150,000 | M18-24 | 10.4 | 4.5 | 4.5 |
| 200,000 | M18-30 | 13.8 | 5.1 | 5.3 |
| 275,000 | L25-20 | 19.1 | 4.6 | 4.4 |
| 350,000 | L25-24 | 24.3 | 5.1 | 5.1 |
| 400,000 | L25-30 | 27.7 | 4.4 | 4.5 |
| 500,000 | L25-40 | 34.7 | 4.2 | 4.5 |
| 600,000 | L25-50 | 41.6 | 4.3 | 4.7 |
| 1,000,000 | L55-40 | 69.4 | 4.1 | 4.4 |
| Radiant Hi Temp Source | Primary in 180 |
Primary out 150 | Radiant in 125 |
Radiant out 140 |
| BTUH | Model | Radiant GPM | Pressure Drop PSI Primary |
Pressure Drop PSI Radiant |
| 25,000 | M18-6 | 2.5 | 3.6 | 3.7 |
| 50,000 | M18-10 | 5 | 3.7 | 5.3 |
| 70,000 | M18-14 | 7 | 3.2 | 5.3 |
| 90,000 | M18-20 | 9 | 2.4 | 4.4 |
| 110,000 | M18-24 | 11 | 2.5 | 4.7 |
| 140,000 | M18-30 | 14 | 2.5 | 5.0 |
| 200,000 | L25-20 | 20 | 2.4 | 4.5 |
| 250,000 | L25-24 | 25 | 2.6 | 5.1 |
| 300.000 | L25-30 | 30 | 2.5 | 5 |
| 350,000 | L25-40 | 35 | 2.0 | 4.3 |
| 450,000 | L25-50 | 45 | 2.4 | 5.2 |
| 600,000 | L55-30 | 60 | 2.4 | 4.9 |
| 800,000 | L55-40 | 80 | 2.6 | 5.4 |
| Radiant Low Temp Source |
Primary 140 In |
Primary 115 Out |
Radiant 100 In |
Radiant 120 Out |
| BTUH | Model | Radiant GPM | Press Drop Primary PSI |
Press Drop Radiant PSI |
| 25,000 | M18-6 | 2.5 | 5.3 | 3.7 |
| 45,000 | M18-10 | 4.5 | 4.3 | 4.3 |
| 70,000 | M18-14 | 7 | 4.7 | 5.4 |
| 100,000 | M18-20 | 10 | 4.3 | 5.5 |
| 110,000 | M18-24 | 11 | 3.6 | 4.7 |
| 140,000 | M18-30 | 14 | 3.7 | 5.0 |
| 200,000 | L25-20 | 20 | 3.5 | 4.5 |
| 250,000 | L25-24 | 25 | 3.8 | 5.1 |
| 275,000 | L25-30 | 27 | 3.0 | 4.2 |
| 375,000 | L25-40 | 38 | 3.4 | 4.9 |
| 450,000 | L25-50 | 45 | 3.5 | 5.2 |
| 600,000 | L55-30 | 60 | 3.5 | 4.9 |
| 800,000 | L55-40 | 80 | 3.8 | 5.4 |
| Water Heater Mode |
Primary 200 In |
Primary 150 Out |
Hot Water 40 In |
Hot Water 140 Out |
| BTUH | Model | Hot Water GPM | Press Drop Hot PSI |
Press Drop Cool PSI |
| 50,000 | M18-6 | 1.0 | 5.2 | 0.6 |
| 100,000 | M18-10 | 2.0 | 5.2 | 0.9 |
| 150,000 | M18-14 | 3.0 | 5.3 | 1.0 |
| 250,000 | M18-20 | 5 | 6.6 | 1.4 |
| 300,000 | M18-24 | 6 | 6.5 | 1.5 |
| 375,000 | M18-30 | 7.5 | 5 | 1.5 |
| 500,000 | L25-20 | 10 | 5.4 | 1.2 |
| 600,000 | L25-24 | 12 | 5.4 | 1.2 |
| 750,000 | L25-30 | 15 | 5.5 | 1.3 |
| 1,000,000 | L25-40 | 20 | 6.0 | 1.4 |
| 1,500,000 | L55-30 | 30 | 5.5 | 1.3 |
| 2,000,000 | L55-40 | 40 | 5.8 | 1.3 |