Sanyo W-3WAY ECO-i 85464369098000 Installation Instructions Manual page 22

● 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)
Distribution joint tubing
Outdoor side A: ø3/8 (ft.)
Indoor side 1: ø3/8 (ft.)
● 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
ø1/2 (ft.) → LB
ø3/8 (ft.) → LC +
A – B +
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
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.
ing height 8.8 ft. = room volume 1417 ft.
shows that the minimum room volume should be 2455 ft.
2
(floor area 279 ft. ) for refrigerant of 418 oz.
<Determination by calculation>
Overall refrigerant charge amount for the air conditioner: oz
(Minimum room volume for indoor unit: ft.
418 (oz)
= = 0.29 (oz/ft.
3
1417 (ft. )
Therefore, openings such as louvers are not required for this
room.
W-3WAY_ECO-i_US.indd 22 W-3WAY_ECO-i_US.indd 22
B: ø3/8 (ft.) (from outdoor unit connection tubing)
2: ø3/8 (ft.) 3: ø3/8 (ft.)
: 131 ft. × 1.99 oz/ft.
: 16 ft. × 1.38 oz/ft.
: 225 ft. × 0.602 oz/ft. = 135 oz
1 – 4
Be sure to check the limit density for
the room in which the indoor unit is
installed.
× ceil-
2
3
), the graph at right
3
3
)
3 3
) < 0.3 (oz/ft. )
The longest tubing length in this example
(LA = 131 ft.)
4: ø3/8 (ft.) (from indoor unit connection tubing)
= 261 oz
= 22 oz
Total 418 oz
ft. 3
4000
Range below
3500
the density limit of
3000 3
0.3 oz/ft.
(countermeasures
2500
not needed)
2000
1500
1000
500
0
0 200 400
Total amount of refrigerant
22
ft. 2
454
398
341
284
227
170
Range above
the density limit of
114
0.3 oz/ft. 3
57
(countermeasures
needed)
0
600 800 1000 1200
oz
2008/02/07 10:55:42 2008/02/07 10:55:42