LG Electronics PRCKD20E, PRCKD40E owner manual Necessary sensor by operating mode

Necessary sensor by operating mode

Necessary sensor by operating mode

Operating mode	Necessary sensor	Function
		- This runs indoor air conditioning.
Air conditioning	SA temperature sensor	- Initial external air inlet setting is 30% of the air
		supply during the air conditioning and this can be
	RA temperature sensor
		changed by the user. But, when the damper actuator
		is installed on AHU, the setting can be changed.
		- This runs the indoor heating.
Heating	SA temperature sensor	- Initial external air inlet setting is 30% of the air
	RA temperature sensor	supply during the heating and this can be changed
		by the user. But, when the damper actuator is
		installed on AHU, the setting can be changed.
		- This is the operating function to run indoor air
		conditioning by controlling multiple outdoor units by
	SA temperature sensor	comparing the enthalpy of the indoor/outdoor air.
		- During the power save operation, the operation switches
Power save	RA temperature sensor	between partial air conditioning operation (Controlling
	OA temperature/	multiple outdoor units) and external air conditioning
	humidity sensor	operation (Outdoor unit OFF, 100% external air flow).
	Damper actuator	- This is operating function is mainly used in between
		seasons. But if there is no OA temperature/humidity
		sensor and RA temperature/humidity sensor on the
		AHU, the power save operation cannot be selected.
		- This is the operating function to remove the indoor
	SA temperature sensor	humidity when the humidity level indoor is excessive.
Dehumidify	RA temperature sensor	- During the dehumidifier operation, the set value is
		50%RH and the user cannot change this setting. But
	OA temperature/
		if there is no OA temperature/humidity sensor and
	humidity sensor
		RA temperature/humidity sensor on the AHU, the
		dehumidifier operation cannot be selected.
		- This is the operating function to control the humidity to
	SA temperature sensor	the set value by detecting the indoor humidity level.
Humidification		- This can be selected during heating operation.
	RA temperature sensor	But if there is no humidifier/humidifying valve and
		RA temperature/humidity sensor on the AHU, the
		humidifier operation cannot be selected.
		- This is the operating function to control the amount of
		external air flow so that the CO2 level is controlled
	SA temperature sensor	within the set level by detecting the indoor CO2 level.
		- The initial CO2 level is set to 1000ppm, and can
Auto ventilation	RA temperature sensor	be changed by the user.
	CO2 sensor	- This function operates when auto ventilator
	Damper actuator	(Additional operation) is selected during air
		conditioning or heating operation. But if there is no
		CO2 sensor and damper actuator on the AHU, the
		auto ventilator operation cannot be selected.
	SA temperature sensor	- When the mixing temperature during the heating
		operation is below the set value (5°C),
Preheating	RA temperature sensor	preheating device automatically operates. The
	Mixing temperature/	preheating device and mixing temperature
	humidity sensor	sensor must be installed on AHU for this to
		operate automatically.

6AHU CONTROL KIT