Airwell OU-PSINV-25HR, Руководство по установке

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11
CAUTION
1. 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 1-7 and 1-8.
2. 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).
WARNING
Always check the gas density for the room in which the unit
is installed.
■
Check 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 the leak
detector.
(Total refrigerant charged amount: kg)
(Min. indoor volume where 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 at the field. (Refer to the unit’s nameplate for the
amount of charged refrigerant at shipment.)
Minimum indoor volume & floor area relative to the amount
of refrigerant are roughly as given in the following table.
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
Min. indoor floor area (when the ceiling is 2.7 m high)
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)
Min. indoor volume
Total amount of refrigerant
Kg
CAUTION
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.
1-6. Optional Distribution Joint Kits
●
NRF-DL16R: Cooling capacity after distribution is 16.0 kW
(54,600 BTU/h) or less.
●
NRF-DL28R: Cooling capacity after distribution is 28.0 kW
(95,500 BTU/h) or less.
Table 1-9 Distribution Branch Size ( 1, 2, 3, 4)
Unit: mm (in.)
Indoor Unit 12 type 16 type 18 type
Gas tube 12.7 (1/2)
Liquid tube 6.53 (1/4)
Indoor Unit 25 type 36 type 48 type 60 type
Gas tube 15.88 (5/8)
Liquid tube 9.52 (3/8)
B
B
B
C
A
C
A
110
97
72
C
C
C
E
D
DE
D
72
110
97
NRF-DL16R
for gas tube for liquid tube
Insulation Insulation
Distribution
joint Distribution
joint
Table 1-10 Size of connection point on each part (shown is
inside diameter of tubing)
Size Part A Part B Part C Part D Part E
mm ø19.05 ø15.88 ø12.7 ø9.52 ø6.35
Unit: mm
1
2
100
35
80
80
(295)
ø9.52
ø9.52
ø9.52
3
4
5
6
1
ø12.7
1
2
100
80
80
300
100
ø25.4
ø15.88
ø15.88
ø15.88
1
3 1
1 1 1 2
ø9.52 ø12.7
ø15.88
ø19.05
3 1
ø12.7
ø15.88
ø19.05
ø25.4
ø25.4
ø28.58
ø9.52
ø6.35
NRF-DL28R (for simultaneous Triple)
Liquid distribution joint
for liquid tube Gas distribution joint
for gas tube
Liquid-tube side tube
connector Gas-tube side tube
connector
Thermal insulation
for gas distribution
joints Thermal insulation
for liquid distribution
joints Gas-tube side tube
connector
Dowel pin
position
B-
CUP3
3 locations
Unit: mm
Airwell̲PAC-i̲eng.indb 11 Airwell̲PAC-i̲eng.indb 11 2009/07/09 16:13:19 2009/07/09 16:13:19