LG AR-DR12-05A Installation And Operation Manual page 119

Damper Sequences, continued.
Minimum Outside Air Damper: The minimum outside air damper modulates to maintain the CFM set-point. This damper position is con-
strained by its minimum and maximum set-points.
Return Air Damper: The return air damper is set to control inversely to the outside air damper. This damper position is constrained by its mini-
mum and maximum set-points.
Recirculation Air Damper: The recirculation air damper is set to control inversely to the outside air damper. This damper position is con-
strained by its minimum and maximum set-points.
Exhaust Air Damper: The exhaust air damper is set to control directly to the outside air damper. This damper position is constrained by its
minimum and maximum set-points.
Fan Sequences
Supply Fan Control: The following sequences are selectable for supply fan control. The fan speed is constrained by its minimum and maxi-
mum speed set-points.
• Constant volume
• Duct static pressure
• Space static pressure
Return Fan Control: The following sequences are selectable for return fan control. Fan speed is constrained by its minimum and maximum
speed set-points.
• Constant volume
• Return duct static pressure
• Return static with supply tracking
• Space static pressure
Exhaust Fan Control: The following sequences are selectable for exhaust fan control. Fan speed is constrained by its minimum and maximum
speed set-points.
• Constant volume
• Space static pressure
• Supply tracking with offset
Winter Ramp
The winter ramp function prevents the supply temperature from dropping below set-point under the following conditions:
• Outside air temperature is below the winter ramp enable setpoint; and
• Heating capacity is at 100%.
One of the following is used to perform the winter ramp function:
• Supply fan speed; or
• Outside air damper position.
If the unit is a heat pump, the supply fan is always used.
Due to our policy of continuous product innovation, some specifications may change without notification.
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• Hardwired input
• Single zone variable air volume
• CFM control
• Hardwired input
• Single zone variable air volume
• Supply tracking with offset
• CFM control
• Hardwired input
• Return duct static pressure
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Sequences of Operation
119