Sanyo SPW-C0705DXHN8 - Page 19

2-9
Design of W-2WAY ECO-i SYSTEM Unit Specifications
1
2
3
4
5
6
7
8
Additional refrigerant charge amount
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size Amount of refrigerant
charge/m (g/m)
ø6.35 26
ø9.52 56
ø12.7 128
ø15.88 185
ø19.05 259
ø22.22 366
40.5
54.0
20 30 40 50 60 70 80 kg
67.5
81.0
94.5
108.0
121.5
135.0
148.5
162.0
175.5
189.0
202.5
216.0
229.5
243.0
256.5
270.0
m
2
m
3
Total amount of refrigerant
Min. indoor floor area (when the ceiling is 2.7 m high)
Min. indoor volume
Range below the
density limit of
0.3 kg/m
3
(Countermeasures
not needed)
Range above the
density limit of
0.3 kg/m
3
(Countermeasures
needed)
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
*Always charge accurately using a scale for weighing.
Required amount of charge = (Amount of refrigerant
charge per meter of each size of liquid tube × its tube
length) + (...) + (...)
1-6. Check of Limit Density
When installing an air conditioner in a room, it is necessary
to ensure that 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
the leak detector.
(Total refrigerant charged amount: kg)
(Min. indoor volume where the indoor unit is installed: m
3
)
Limit density 0.3 (kg/m
3
)
The limit density of refrigerant which is used in this unit is 0.3
kg/m
3
(ISO 5149).
The shipped outdoor unit comes charged with the amount of
refrigerant 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.)
Always check the gas
density limit for the room in
which the unit is installed.
WARNING
Check of limit density
Pay special attention to any location,
such as a basement, etc., where leaking
refrigerant can accumulate, since
refrigerant gas is heavier than air.
Minimum indoor volume and floor area as
against the amount of refrigerant is roughly as
given in the following table.
CAUTION
1. Model Selecting and Capacity Calculator