Fig. 20 — Horizontal Discharge Block-Off Plate
ECONOMIZER |
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HOLE | CONTROL | ECONOMIZER | ECONOMIZER | TOP |
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(NOT | BOARD | PLUG | MOTOR | SCREW | |||
SHOWN) |
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UNIT
WIRING | OUTSIDE AIR | |
SCREEN | ||
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BAROMETRIC
RELIEF DAMPER
SHIPPING
SCREW
POSITION SETTING | ENTHALPY |
BRACKET | CONTROL |
Fig. 21 — Durablade Economizer Installed in Unit
HOOD
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OUTDOOR | 55 |
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| M | ST | IGH |
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F | 5 |
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| 1 | IN |
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TEMP | 65 70 |
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B
C
D S
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RE V .
B
TR
Fig. 23 — Outdoor-Air Thermostat/
Enthalpy Control Installation
Example:
Given — Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . 0.2 in. wg
Outdoor Air . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 900 cfm
Determine — Setting = 5 in.
Fig. 22 — Durablade Economizer
Minimum Position Setting
14
