TABLE 13: STATIC RESISTANCES1
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| CFM |
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DESCRIPTION |
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| 15 TON |
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| 20 TON |
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| 4500 | 5765 |
| 7200 | 6000 | 7000 | 9400 |
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WET COIL | 0.1 | 0.1 |
| 0.1 | 0.1 | 0.1 | 0.1 |
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ECONOMIZER OPTION | 0.1 | 0.1 |
| 0.1 | 0.1 | 0.1 | 0.1 |
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HORIZONTAL DUCT CONN.2 | 0.2 | 0.3 |
| 0.5 | 0.2 | 0.3 | 0.5 |
1Deduct these resistance values from the available unit ESP values listed in the respective blower per- formance table except for Horizontal Duct Connections.
2Add these values due to less airflow resistance.
TABLE 14: POWER EXHAUST PERFORMANCE
STATIC RESISTANCE OF RETURN DUCTWORK, IWG
MOTOR |
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| 0.2 | 0.3 |
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| 0.5 |
| 0.6 | |||||
SPEED1 |
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CFM |
| kW | CFM | kW | CFM |
| kW | CFM |
| kW | CFM |
| kW | |
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HIGH2 | 5250 |
| 0.83 | 4500 | 0.85 | 4200 |
| 0.88 | 3750 |
| 0.93 | 3000 |
| 0.99 |
MEDIUM | 4900 |
| 0.77 | 3900 | 0.79 | 3500 |
| 0.82 | 2900 |
| 0.85 | - |
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LOW | 4400 |
| 0.72 | 3700 | 0.74 | 3000 |
| 0.78 | - |
| - | - |
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1Power exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.
2The factory setting.
TABLE 15: BLOWER MOTOR AND DRIVE DATA
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| MOTOR1 |
| ADJ. MOTOR PULLEY | FIXED BLOWER PULLEY |
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MODEL |
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DRIVE | RANGE |
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| PITCH |
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SIZE |
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| EFF. | DESIGN- | O/D | BORE | DESIGN- | O/D | BORE | DESIG- |
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| HP | FRAME |
| DIA | DIA | LNGTH. | QTY. | ||||||||||
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| (%) | NATION | (in.) | (in.) | NATION | (in.) | (in.) | NATION | |||||||
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| Std. | 850/1065 |
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| BK90 | 8.75 | 8.4 | 1 | BX70 | 71.8 | 1 |
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| 4.3- |
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15 Ton | High |
| 5 | 184T |
| 89.5 | 1VP56 | 5.35 |
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| 5.32 |
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| 69.8 | 1 | ||||||||
| Spd. | 965/1190 |
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| BK80 | 7.75 | 7.4 | 1 | BX68 | |||
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| Std. | 870/1025 |
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| BK120 | 11.75 | 11.4 | BX83 | 84.8 | 1 | |
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| 5.5- |
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20 Ton | High |
| 7.5 | 213T |
| 91 | 1VP68 | 6.75 |
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| 6.52 |
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| Spd. | 950/1120 |
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| BK110 | 10.75 | 10.4 | BX80 | ||||
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1All motors have a nominal speed of 1800 RPM, a 1.15 service factor and a solid base. They can operate to the limit of their service factor because they are located in the moving air, upstream of any heating device.
2DO NOT close this pulley below 1 turn.
18 | Unitary Products |
