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Distribution joint tubing
Outdoor side
A: ø12.7 B: ø9.52 C: ø9.52
(from outdoor unit connection tubing)
Indoor side
1: ø9.52 2: ø9.52 3: ø9.52 4: ø9.52
5: ø9.52 6: ø9.52 7: ø9.52
(from indoor unit connection tubing)
● Obtain additional charge amount.
Note 1:
The charge amounts per 1 meter are different for each liquid
tubing size.
ø19.05 → LA + LB
ø15.88 → LO + LC + LD
ø12.7 → LE + A
ø9.52 → LF + B – C + 1 – 7 : 73 m × 0.056 kg/m = 4.088
Additional refrigerant charge amount is 21.349 kg.
Note 2:
Necessary amount of additional refrigerant charge per outdoor
unit (SPW-C1305DZH8) is 3.2kg. (See the Table 1-9-2.)
Note 1) Amount of additional charge per tubing length : 21.349kg
Note 2) Amount of additional charge per outdoor unit : 3.2
Total of additional refrigerant charge amount
Therefore, the total of additional refrigerant charge amount
reaches 24.549kg.
● Obtain overall refrigerant charge amount.
Overall refrigerant charge amount of the system indicates
the calculated value shown above the additional charge
amount in addition to the total of the refrigerant charge
amount (shown in the Table 1-10) at the shipment of each
outdoor unit.
Refrigerant charge amount at shipment:
Additional charge amount
Therefore, overall refrigerant charge amount of the system
reaches 59.949kg.
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 15 m
height 2.7 m = room volume 40.5 m
that the minimum room volume should be 199.8 m
74.0 m
2
) for refrigerant of 59.949 kg. Accordingly, openings
such as louvers are required for this room.
<Determination by calculation>
Overall refrigerant charge amount for the air conditioner: kg
(Minimum room volume for indoor unit: m
59.949 (kg)
=
= 1.48 (kg/m
40.5 (m
3
)
Therefore, openings such as louvers are required for this room.
: 45 m × 0.259 kg/m = 11.655
: 22 m × 0.185 kg/m = 4.07
: 12 m × 0.128 kg/m = 1.536
Total 21.349 kg
: 24.549kg
SPW-C0905DZH8 : 11.8 kg
SPW-C0905DZH8 : 11.8 kg
SPW-C1305DZH8 : 11.8 kg
: 24.549 kg
Grand total : 59.949kg
× ceiling
3
3
), the graph below shows
3
(floor area
3
3
3
) > 0.3 (kg/m
)
m
2
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
2. SELECTING THE INSTALLATION SITE
kg
2-1. Indoor Unit
AVOID:
● areas where leakage of flammable gas may be expected.
● places where large amounts of oil mist exist.
● direct sunlight.
● locations near heat sources which may affect the
performance of the unit.
● locations where external air may enter the room directly. This
may cause "sweating" on the air discharge ports, causing
them to spray or drip.
● locations where the remote controller will be splashed with
water or affected by dampness or humidity.
● installing the remote controller behind curtains or furniture.
● locations where high-frequency emissions are generated.
DO:
● select an appropriate position from which every corner of the
room can be uniformly cooled.
● select a location where the ceiling is strong enough to
support the weight of the unit.
● select a location where tubing and drain pipe have the
shortest run to the outdoor unit.
● allow room for operation and maintenance as well as
unrestricted air flow around the unit.
● install the unit within the maximum elevation difference
above or below the outdoor unit and within a total tubing
length (L) from the outdoor unit as detailed in Table 1-2.
● allow room for mounting the remote controller about 1m off
the floor, in an area that is not in direct sunlight nor in the
flow of cool air from the indoor unit.
NOTE
Air delivery will be degraded if the distance from the floor to the
)
ceiling is greater than 3 m (for L type, greater than 3.5 m).
Min. 25 cm
18
m
3
270.0
256.5
243.0
229.5
Range below the
density limit of
216.0
3
0.3 kg/m
202.5
(Countermeasures
189.0
not needed)
175.5
162.0
148.5
135.0
Range above
121.5
the density limit
of 0.3 kg/m
108.0
(Countermeasures
94.5
needed)
81.0
67.5
54.0
40.5
20
30
40
50
Total amount of refrigerant
Ceiling-Mounted Type
Ceiling
Min. 25 cm
Font view
3
60
70
80 kg
Wall
Fig. 2-1-1
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