Sanyo SPW-C1155DXHN8 Technical Data & Service Manual page 19

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