Heat Controller DMC24CA-1 manual 30Ceiling Cassette Air Conditioner, Installation, Group Control

Installation

2) Adjusting air volume to the height of ceiling

You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the com- fortable atmosphere to consumers.

Procedure

1. Choose the selectable position in the table after measuring the height of ceiling.

Ceiling height	Mode of slide switch	Change of air volume	Remark
more than 3.3m(10.8ft)	High Ceiling	Increasing	Maunfactured in stan-
2.7~3.3m(8.9~10.8ft)	Standard	-
			dard mode
less than 2.7m(8.9ft)	Low Ceiling	Decreasing

2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-controller.

3.Move the slide switch to the set position.

4.Close the rear cover and check if it works nomally.

1

2

3

Slide switch for ceiling height

1

2

3

1

2

3

3) Group Control

It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to prevent overcurrent.

Wiring design Main PCB

Indoor Unit 1

	Terminal(Local Supply)
	Block	Connector
RED(12V)	RED(12V)	Main PCB
YL(SIGNAL)	YL(SIGNAL)		YL(SIGNAL)
BR(GND)	BR(GND)	#1	BR(GND)

Indoor Unit 2

Terminal(Local Supply)
Block	Connector
YL(SIGNAL)	Main PCB
BR(GND)	#2
	....

Indoor Unit 16

		Terminal(Local Supply)
		Block	Connector
....	YL(SIGNAL)	YL(SIGNAL)	Main PCB
	BR(GND)	BR(GND)	#16

Connecting Cable(Local Supply)

AUTO SWING		OPERATION	SET TEMP	FAN SPEED		SUB FUNCTION
			Room Temp	HI	AUTO	Heater	Preheat
				MED	JET	Defrost	Humidify
				LO		Filter	Out door
			Time	ZONE		1 2 3 4
Timer	Operation unit		Program set
On Off
Set no. Time	01	03 05 07	09 11 13	15 17	19	21	23

Wired Remote Controller

Single Control

S/W GR Group Control 1

Group Control 2

Remote

Controller

PCB

CAUTION

•Using the supplied Wired Remote Controller, wire them like above.

•Move S/W GR to "Group Control 1" position.

•Check the line color of the wire.

•Be careful not to exchange the color of wires.

•The maximum length of connecting wire should be below 200m(656ft)(25Ω ) on connecting each units.

•Use a wire more than 0.5mm2

30Ceiling Cassette Air Conditioner