Sanyo 85464359982001 installation instructions unit is installed 1-10.Check of Limit Density

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Always check the gas density WARNING limit for the room in which the

unit is installed.

1-10. Check of Limit Density

When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the limit level for that room.

If the density could exceed the limit level, it is necessary to provide an opening between the unit and the adjacent room, or to install mechanical ventilation which is interlocked with a leak detector.

(Total refrigerant charged amount: oz)

(Min. indoor volume where the indoor unit is installed: ft.3)

<Limit density 0.3 (oz/ft.3)

The limit density of refrigerant R410A which is used in this unit is 0.3 oz/ft.3 (ISO 5149).

The shipped outdoor unit comes charged with the amount of refrig- erant fixed for each type, so add it to the amount that is charged in the field. (For the refrigerant charge amount at shipment, refer to the unit’s nameplate.)

Pay special attention to any location,

CAUTION such as a basement, etc., where leak- ing refrigerant can accumulate, since

refrigerant gas is heavier than air.

1-11. Installing Distribution Joint

(1)Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed with the optional distribution joint kit

(APR-CHP680BA, APR-CHP1350BA, APR-P160BA, APR-P680BA, APR-P1350BA).

(2)When creating a branch using a commercially available T-joint (header joint system), orient the main tubing so that it is either horizontal (level) or vertical. In order to prevent accumu- lation of refrigerant oil in stopped units, if the main tubing is horizontal then each branch tubing length should be at an angle that is greater than horizontal. If the main tubing is verti- cal, provide a raised starting portion for each branch.

(3)If there are height differences between indoor units or if branch tubing that follows a distribution joint is connected to only 1 unit, a trap or ball valve must be added to that

distribution joint. (When adding the ball valve, locate it within 1.3 ft. of the distribution joint.)

If a trap or ball valve is not added, do not operate the sys- tem before repairs to a malfunctioning unit are completed. (The refrigerant oil sent through the tubing to the malfunctioning unit will accumulate and may damage the compressor.)

Minimum indoor volume & floor area as against the amount of refrigerant is roughly as given in the following table.

	ft.3								ft.2
	10000								1136
	9500								1079
	9000	Range below							1022		h)
	8500	the density limit of							966		g
	8000								909	Min. indoor floor area	n the ceiling is 8.8 ft. hi
Min. indoor volume		0.3 oz/ft.3
	7500								852
	7000	(countermeasures							795
	6500	not needed)							738
	6000								682
	5500								625
	5000								568
	4500								511
	4000								454
	3500								398
	3000				Range above				341		(whe
	2500				the density limit of				284
	2000								227
					0.3 oz/ft.3
	1500								170
	1000				(countermeasures				114
	500				needed)				57
	0								0
	0	500	1000	1500		2000	2500	3000
		Total amount of refrigerant							oz

Tube branching methods (horizontal use)

		°
	to	30
15

			B
	A	Horizontal		A
B		line	View as seen
			from arrow
	Arrow view
Types of vertical trap specifications
(When using ball valve)
Main tubing
Ball valve	Indoor unit (more than 2 units)
	(If only 1 unit is connected, a ball valve
(BV: purchased
separately)	is also needed on this side.)
Indoor unit (1)
(When not using ball valve)
Main tubing	Horizontal
	Indoor unit (Each unit is connected
Branch tubing is			to tubing that is either
			level or is directed
directed upward.
			downward.)
	More than
	8 inch
Indoor unit is directed downward

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