Check Of Limit Density - Sanyo SPW-CR365GXH56 Technical Data Manual

2. System Design
Table 2-10 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
Items
Allowable tubing
length
Allowable elevation
2
difference
L = Length, H = Height
WARNING

2-10. Check of Limit Density

When installing an air conditioner in a room, it is
necessary to ensure that even 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
< Limit density 0.3 (kg/m
The limit density of refrigerant which is used in this
3
unit is 0.3 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
Marks
L1 Max. tubing length
Difference between max. length and min .
L (L2 – L3)
length from the No.1 distribution joint
, – Max. length of each distribution tube
1 2 n
Total max. tubing length including length of
+ + – +L1
2
1 n–1
each distribution tube (only liquid tubing)
When outdoor unit is installed higher than indoor unit
H1
When outdoor unit is installed lower than indoor unit
H2 Max. difference between indoor units
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.
Contents
Actual length
Equivalent length
Minimum indoor volume & floor area as against the
amount of refrigerant is roughly as given in the follow-
ing 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
3 )
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 - 16
Design of Mini ECO-i SYSTEM
Length (m)
>
150
>
175
> 40
>
30
>
200
>
50
>
40
>
15
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
Total amount of refrigerant
70 80 kg