These selections provide the logic to control a Cooling coil.
The selection options for Coils (Cooling - Cold Deck) are:
Cooling - Cold Deck
- Shutdown on Alarm: This option places the system in shutdown mode when the condensate alarm is active.
Cooling Lockout from Outdoor Air
DX Cooling
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Device Rotation
- First Stage Modulated: When you check this, you can select up to four stages of cooling.
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Number of Stages
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One Stage
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Two Stages
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Three Stages
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Four Stages
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Five Stages
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Six Stages
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Seven Stages
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Eight Stages
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Chilled Water
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Proportional Actuator
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Incremental Actuator
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Two Position Actuator
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Face and Bypass Damper
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Proportional Actuator
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Incremental Actuator
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Entering Water Temperature
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Leaving Water Temperature
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Coil Pump
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Pressure/Flow Boost
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Low Temperature Circulation
- Both Pressure/Flow & Low Temp Circulation: This option combine the existing two sequences to start the pump either when the valve command exceeds zero or when the outdoor air temperature drops below the setpoint.
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Dual Pumps: This option adds a second coil pump to operate in a duty/standby configuration.
- Rotate to Balance Runtime: When you select this option with Dual Pumps, the application automatically shifts the lead to the pump with the lowest operating hours.
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Pump Status
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Loss of Status Strategy
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Automatic Restart
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Manual Restart
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Unit Reset Switch (BI)
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Alarm Management
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Lockout Switch
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Motor Overload Tripped
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Automatic Restart
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Manual Restart
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Unit Reset Switch (BI)
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Blocking Protection: This option provides monitoring of the command to a motor (typically a pump). If the command is off for an extended period of time (for example, 7 days), the motor starts for a short time (for example, 30 seconds). This feature prevents blocking (that is, it prevents the motor from seizing up).
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Shutdown Strategy
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Off
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Protect Coil Based on Outdoor Air Temperature
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User Defined Position
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Loss of Airflow Strategy
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Off
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Remain in Control
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Protect Coil Based on Outdoor Air Temperature
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User Defined Position
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Unreliable Sensor Operation
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Off
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Hold
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Protect Coil Based on Outdoor Air Temperature
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User Defined Position
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The Loss of Airflow Strategy options are available only when the Automatic Restart option for the Supply Fan Status Loss of Airflow Strategy is selected.