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Trane Tracer AH540 User Manual

Trane Tracer AH540
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Dehumidification
CNT-SVX05B-EN 69
Occupied and unoccupied mode dehumidificiation: Cooling only
In occupied or unoccupied mode, when dehumidification mode is active
and space temperature is greater than the space occupied cooling setpoint
minus 1.5°F (0.83ºC), dehumidification is controlled with only cooling
capacity. Cooling capacity is increased to further dry the supply air to the
space (see A in Figure 13).
Occupied and unoccupied mode dehumidificiation: Cooling and
reheat
If the space temperature drops 1.5°F (0.83ºC) below the occupied cooling
setpoint, reheat capacity is invoked and modulated to maintain space
temperature control. Cooling capacity continues to modulate or stage to
reduce space humidity (see B in Figure 13).
Occupied and unoccupied mode dehumidificiation: Reheat only
Anytime the space temperature drops below the occupied heating set-
point (occupied, occupied standby, or unoccupied), cooling capacity is dis-
abled and reheat only is provided until the space temperature raises to
3°F (1.6C) below the occupied cooling setpoint.
At the time dehumidification is initiated, if space temperature is greater
than 3ºF (1.67ºC) below the occupied cooling setpoint, reheat only is pro-
vided until space temperature rises to within 3ºF (1.67ºC) of the occupied
cooling setpoint (see C in Figure 13).
Figure 13. Space dehumidification heating and cooling control
Space temperature
Occupied cooling setpoint –1.5ºF (0.83ºC)
C: Reheat only
A: Cooling only
B: Cooling and reheat
Occupied heating setpoint
Occupied cooling setpoint

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Trane Tracer AH540 Specifications

General IconGeneral
BrandTrane
ModelTracer AH540
CategoryController
LanguageEnglish

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