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74•dap4UserManual

   Open20%ifreturn_relative_humidity=humidity_setpoint–0.8%

   Open30%ifreturn_relative_humidity=humidity_setpoint–0.7%

   Open40%ifreturn_relative_humidity=humidity_setpoint–0.6%

   Open50%ifreturn_relative_humidity=humidity_setpoint–0.5%

   Open60%ifreturn_relative_humidity=humidity_setpoint–0.4%

   Open70%ifreturn_relative_humidity=humidity_setpoint–0.3%

   Open80%ifreturn_relative_humidity=humidity_setpoint–0.2%

   Open90%ifreturn_relative_humidity=humidity_setpoint–0.1%

   Open100%ifreturn_relative_humidity=humidity_setpoint

Chilled Water valve closing

Whilestillindehumidicationmode,ChilledWatervalvewillstarttocloseifdewpointisde-

creasing OR relative humidity is decreasing closer to the setpoints minus deadband. The

modulation of the CW valve will be based on whichever has HIGHER demand for CW valve to

open.Forexample,ifdewpointrequirestheCWvalvetoopen20%andhumidityrequiresthe

CW valve to open 50%, as a result, CW valve will open 50%. Individual logic for CW valve

closing based on dewpoint and humidity is as followed:

CW valve modulation based on dewpoint

 Starttocloseifreturndewpointdropstohigh_dewpoint_setpoint–high_dewpoint_deadband;

after that, the CW valve will:

 Open90%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.1°F

 Open80%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.2°F

 Open70%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.3°F

 Open60%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.4°F

 Open50%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.5°F

 Open40%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.6°F

 Open30%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.7°F

 Open20%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.8°F

 Open10%ifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband–0.9°F

 Closedifreturndewpoint=high_dewpoint_setpoint–high_dewpoint_deadband-1.0°F

CW valve modulation based on humidity

 Startstocloseifreturn_relative_humiditydropstohumidity_setpoint–humidity_deadband;

after that, the CW valve will:

 Open90%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.1%

 Open80%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.2%

 Open70%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.3%

 Open60%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.4%

 Open50%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.5%

 Open40%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.6%

 Open30%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.7%

 Open20%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.8%

 Open10%ifreturn_relative_humidity=humidity_setpoint–humidity_deadband–0.9%

 Closedifreturn_relative_humidity=humidity_setpoint–humidity_deadband–1.0%

Humidier Operation

HumidierwillturnonwhendewpointisbelowLowDewpointSetpoint

HumidierwillturnoffwhendewpointisaboveLowDewpointSetpoint+LowDewpointDeadband

Brand	Data Aire
Model	dap 4
Category	Control Unit
Language	English

Data Aire dap 4 User Manual

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Data Aire dap 4 Specifications