Panasonic S-200PE1E8, Technical Data & Service Manual

Page: 43 / 197

1-37
1 1
L = 35 m 1 = 5 m
L1 = 10 m 2 = 5 m
L2 = 5 m 3 = 5 m
4 = 10 m
L : ø9.52
L1 : ø9.52
L2 : ø9.52
1 – 4 : ø6.35
ø9.52 L : 35 m
× 40
g
/ m = 1400
ø9.52 L1 + L2 : (10 + 5) m × 40
g
/ m = 600
ø6.35 1 – 4 : (5 + 5 + 5 + 10) m × 20 g / m = 500
–1200
+1300
L
L1
L2
4
3
2 1
Table 1-3 Connection Tube Sizes (Twin, Triple, Double-Twin)
Main tubing (L)
Double-Twin distribution tube (L1, L2)
Indoor unit connection tube
( 1, 2, 3, 4)
Total type capacity of indoor unit connected after
the branch
Type capacity of indoor unit 200 250 100 - 125 60 - 125 50
Gas tube ø 25.4 ø 15.88 ø 15.88 ø 12.7
Liquid tube ø 9.52 ø 12.7 ø 9.52 ø 9.52 ø 6.35
Amount of additional change per 1 m 40
g
80
g
40
g
40
g
20
g
Change with the amount of additional refrigerant calculated using the formula below, based on the values in Table 1-3 and the
size and length of the liquid tubing
Amount of additional refrigerant charge ( g )
Do not remove refrigerant from the system, even if the result of the calculation is negative.
(Use with the current refrigerant charge.)
(a) Actual length (m) of main tubing (ø9.52)
Actual length (m) of main tubing (ø12.7)
(b) Total length of distribution tubing (ø9.52)
(c) Total length of distribution tubing (ø6.35)
Refrigerant charge per 1 m of actual length = 40
g
/m
Refrigerant charge per 1 m of actual length = 80
g
/m
Refrigerant charge per 1 m of actual length = 40
g
/m
Refrigerant charge per 1 m of actual length = 20
g
/m
Additional refrigerant amount (
g
) = Additional refrigerant for main tubing (
g
) + Additional refrigerant for distribution tubing (
g
)
- Outdoor unit charge-less refrigerant amount (
g
)
= 40
×
(a) + 40
×
(b) + 20
×
(c) - 1200 (Type 200)
Additional refrigerant amount (
g
) = Additional refrigerant for main tubing (
g
) + Additional refrigerant for distribution tubing (
g
)
- Outdoor unit charge-less refrigerant amount (
g
)
= 80
×
(a) + 40
×
(b) + 20
×
(c) - 2400 (Type 250)
Example : Type 200
Sample tubing lengths
Find the liquid tube size from Table 1-3.
The amount of additional on-site refrigerant charge is
found by subtracting the outdoor unit charge-less
refrigerant amount from the total charge amount
The amount of additional on-site refrigerant charge is 1300
g
.
Outdoor Unit Type Type 200 Type 250
Outdoor Unit Amount of
Chargeless Refrigerant
1200
g
2400
g
Outdoor unit charge-less refrigerant amount
Total
Outdoor unit (Type 200)
Indoor unit (Type 50
×
4)
(Type 200)
(Total type capacity of indoor unit 100)
(Total type capacity of indoor unit 100)
SM830161-04.indb 131 2012/08/23 17:25:35
for all tube sizes.
Table 1-4
This unit requires no additional refrigerant
charge up to tubing length 30 m. In case
of more than 30 m, additional refrigerant
charge is required. Refer to Tables 1-1 and
1-3.
In case of multi type installation, indoor
units should be installed within the
same room. If multi type indoor units are
installed in different rooms, temperature
control may develop problems because
thermostat operation must follow the
thermostat condition of 1 indoor unit only
(the main unit). 1.
2.
Always check the gas density
for the room in which the unit is
installed.
Chec 2. k of limit density
When installing an air conditioner in a room, it is
necessary to ensure that even if the refrigerant gas
accidentally escapes, its density does not exceed the
limit level.
If the density might exceed the limit level, it is
necessary to set up an opening between it and the
adjacent room, or to install mechanical ventilation
which is interlocked with a leak detector.
(Total refrigerant charged amount: k
g
)
(Min. indoor volume where the indoor unit is installed: m³)
< Limit density 0.3 (k
g
/m
3
)
The limit density of refrigerant which is used in this
unit is 0.3 k
g
/m
3
(ISO 5149).
The shipped outdoor unit comes charged with the
amount of refrigerant fi xed for each type, so add it
to the amount that is charged at the fi eld. (For the
refrigerant charge amount at shipment, refer to the
unit’s nameplate.)
Minimum indoor volume & fl oor area relative to the
amount of refrigerant are roughly as given in the
following table.
Pay special attention to any
location, such as a basement
or recessed area, etc. where
leaked refrigerant can
collect, since refrigerant gas
is heavier than air.
10
13.5
27.0
40.5
54.0
67.5
81.0
94.5
108
121.5
135
5
10
15
20
25
30
35
40
45
50
m 3 m 2
20 30 40 k
g
Min.
indoor
fl oor area
(when the ceiling is 2.7 m high)
Total amount of refrigerant
Range below
the density limit
of 0.3 k
g
/m
3
(countermeasures
not needed)
Range above
the density limit
of 0.3 k
g
/m
3
(countermeasures
needed)
Min.
indoor
vo
lume
CAUTION
WARNING
CAUTION
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