Hitachi RAS-SX10HAK / RAC-SX10HAK Infrared Human Presence Sensing Function, Example Cooling

INFRARED HUMAN PRESENCE SENSING FUNCTION

With the infrared sensor, the air conditioner can detect the activity level in a room and adjust the temperature and humidity automatically, thus achieving the purpose of energy saving.

ENGLISH

Example: Cooling

1	Press the	INFRARED SENSOR button.
	• The infrared sensor automatically adjusts the

indoor temperature and humidity according to
the activity level in the room. However, the	Sensor in operation
temperature e and humidity specified by the
remote controller remain unchanged.

•The energy saving effect can be achieved only after the energy-saving temperature control function keeps working for more than 2 hours.

•In the energy-saving temperature-control mode, the energy consumption saved by the air conditioner varies with the activity level.

Operation mode				Operation Description
				● Reduces the preset temperature
				in one of the following cases:
				• High activity level
	Heating
				• High indoor temperature
				● Raises the preset temperature
				in one of the following cases:
				• Low activity level
	Cooling
				• Low indoor temperature
				● Increases the preset temperature
			·	in one of the following cases:
				• Low activity level
Dehumidifying/Dry Cool
				• Low indoor temperature
				● Energy-saving operation in auto
				mode.
		Auto

•The tracing function (Page 20) can further reduce the energy consumption.

•After detecting that the person leaves the room for 30 minutes, the air conditioner turns to the energy-saving modes according to the settings in the remote controller as shown in the right table, but the preset temperature and humidity in the remote controller remain unchanged.

•When the air conditioner works in powerful operation, setting the energy-saving mode will cancel the powerful operation.

Operation mode		Actions in case of no person
	Heating	·Decreases the temperature by 2°C.
	Cooling	·Increases the temperature by 2°C .

· Dehumidifying/Dry Cool ·Increases the temperature by 5–10%.

Auto ·Energy-saving operation in auto mode.

The infrared sensor detects changes to the infrared generated by human bodies. Therefore, the accuracy of infrared sensor may be affected negatively in the following cases:

·The activity level is very low (reading, watching TV, etc.) or human bodies are blocked by a screen, cabinet, or glass board. ·The indoor temperature is very high and exceeds or approaches the human body temperature (when the refrigeration

just begins).

·The person wears thick clothes and turns his/her back to the air conditioner. ·Curtains or plant leaves swing due to pet movement or airflow.

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