Sanyo CHDZR09053, XMHX1252, XMHX1852, CHDZR14053, 85464369098000 Main tubing, Remark

●Obtain liquid tubing size from Tables 1-10, 11, 12 and 15.

Main tubing

LA = ø5/8 (ft.) (Total capacity of indoor unit is 179,400 BTU/h) LB = ø1/2 (ft.) (Total capacity of indoor unit is 131,600 BTU/h) LC = ø3/8 (ft.) (Total capacity of indoor unit is 83,800 BTU/h)

The longest tubing length in this example (LA = 131 ft.)

Distribution joint tubing
Outdoor side	A: ø3/8 (ft.)	B: ø3/8 (ft.)	(from outdoor unit connection tubing)
Indoor side	1: ø3/8 (ft.)	2: ø3/8 (ft.)	3: ø3/8 (ft.)	4: ø3/8 (ft.) (from indoor unit connection tubing)

●Obtain charge amount for each tubing size

Note that the charge amounts per 1 meter are different for each liquid tubing size.

ø5/8 (ft.) → LA	: 131 ft. ⋅ 1.99 oz/ft.	=	261 oz
ø1/2 (ft.) → LB	: 16 ft. ⋅ 1.38 oz/ft.	=	22 oz
ø3/8 (ft.) → LC + A – B + 1 – 4	: 225 ft. ⋅ 0.602 oz/ft.	=	135 oz

Total 418 oz

Additional refrigerant charge amount is 418 oz.

Remark:

When operating only one model CHDZ (R) 14053 or jointing with one more model, be sure to include the values in Table 1-16-2 Necessary Amount of Refrigerant Charge Per Unit.

CAUTION

Be sure to check the limit density for

the room in which the indoor unit is

installed.

Checking of limit density

Density limit is determined on the basis of the size of a room using an indoor unit of minimum capacity. For instance, when an indoor unit is used in a room (floor area 161 ft.2 ⋅ ceil- ing height 8.8 ft. = room volume 1417 ft.3), the graph at right shows that the minimum room volume should be 2455 ft.3 (floor area 279 ft.2) for refrigerant of 418 oz.

<Determination by calculation>

Overall refrigerant charge amount for the air conditioner: oz

(Minimum room volume for indoor unit: ft.3)

418(oz)

== 0.29 (oz/ft.3) < 0.3 (oz/ft.3)

1417 (ft.3)

Therefore, openings such as louvers are not required for this

room.

Min. indoor volume

ft.3							ft.2
4000							454
3500	Range below						398
3000	the density limit of						341	area
	0.3 oz/ft.3
2500	(countermeasures						284
								floor
	not needed)
2000							227	indoor
1500							170
			Range above
								Min.
1000			the density limit of				114
500			0.3 oz/ft.3				57
			(countermeasures
0			needed)				0
0	200	400	600	800	1000	1200
							oz

Total amount of refrigerant

(when the ceiling is 8.8 ft. high)

22

W-3WAY_ECO-i_US.indd 22 2008/02/07 10:55:42