Table 1: Recommended Maximum Mounting Height
Horizontal Type |
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| No Deflector | Truncone | |||||||||||||
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| Louvers | Louvers | Anemostat | Anemostat | ||||||||||||||
Model | Model |
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Number |
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| H |
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| H | S | H | S | H | S | H |
| S | H | S | H | S | H | S |
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9 |
| 17 | 11 | 17 | 15 | 11 | 8 | 19 | 13 |
| 11 | 8 | 22 | 8 | 22 | 8 | 28 | ||
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9 |
| 18 | 13 | 20 | 18 | 13 | 9 | 25 | 16 |
| 14 | 10 | 28 | 9 | 28 | 8 | 35 | ||
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10 |
| 20 | 14 | 22 | 19 | 14 | 11 | 26 | 17 |
| 15 | 11 | 30 | 11 | 30 | 8 | 30 | ||
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12 |
| 25 | 16 | 24 | 21 | 16 | 11 | 26 | 17 |
| 15 | 11 | 30 | 11 | 30 | 8 | 30 | ||
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14 |
| 29 | 18 | 27 | 24 | 18 | 13 | 32 | 21 |
| 18 | 13 | 36 | 13 | 36 | 9 | 45 | ||
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15 |
| 31 | 21 | 31 | 28 | 21 | 14 | 35 | 23 |
| 20 | 14 | 40 | 14 | 40 | 10 | 50 | ||
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15 |
| 32 | 23 | 34 | 31 | 23 | 16 | 39 | 25 |
| 22 | 15 | 44 | 16 | 44 | 12 | 55 | ||
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16 |
| 33 | 25 | 37 | 33 | 25 | 16 | 39 | 25 |
| 22 | 15 | 44 | 16 | 44 | 12 | 55 | ||
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17 |
| 34 | 26 | 39 | 34 | 26 | 17 | 46 | 30 |
| 26 | 18 | 52 | 17 | 52 | 13 | 65 | ||
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18 |
| 37 | 30 | 45 | 37 | 30 | 18 | 53 | 35 |
| 30 | 21 | 60 | 18 | 60 | 13 | 75 | ||
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19 |
| 40 | 30 | 45 | 37 | 30 | 17 | 53 | 35 |
| 30 | 21 | 60 | 17 | 60 | 13 | 75 | ||
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20 |
| 44 | 30 | 45 | 36 | 30 | 17 | 53 | 35 |
| 30 | 21 | 60 | 17 | 60 | 13 | 75 | ||
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20 |
| 46 | 37 | 56 | 44 | 37 | 19 | 65 | 42 |
| 37 | 26 | 74 | 19 | 74 | 13 | 93 | ||
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| 36 | 54 | 43 | 36 | 19 | 63 | 41 |
| 41 | 25 | 72 | |||||
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NOTES: With horizontal louvers open 30° from the vertical plane. Values are for heaters operating at standard condition (2psi. Steam and 60°F entering air).
Listed heights for
Horizontal Unit Heater Connected to
Overhead Hot Water Mains
Vertical Unit Heater Connected to
Overhead Hot Water Mains
Figure 4: Hot Water System Piping
Unit Heater Connection for High Pressure Steam
Unit Heater Connection for Low Pressure Steam - Open Grav-
ity or Vacuum Return System
Figure 5: Steam System Piping
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