RMXS48LVJU Installation Manual
3 English
2. INTRODUCTION
1.
This series uses R410A new refrigerant. Be absolutely sure to
comply with “7. PRECAUTIONS ON REFRIGERANT PIPING”,
because even greater caution is needed to prevent impurities
from entering R410A (mineral oils and water).
2.
The design pressure is 478 PSI (3.3 MPa), which means that pip-
ing may be thicker than conventionally, so please refer to “7. PRE-
CAUTIONS ON REFRIGERANT PIPING”.
3.
This is a mixed refrigerant, so charge as a liquid when adding
refrigerant.
(If charged as a gas, the composition of the refrigerant may
change, preventing normal operation.)
4.
The indoor unit must use R410A. See the catalog for indoor unit
and BP unit models which can be connected. (Normal operation
is not possible when connected to other units.)
5.
The power supply of this series is single-phase, 208/230V (60Hz).
2-1 Combination
The indoor units can be installed in the following range.
• Be sure to connect a dedicated indoor unit. See the catalog
for indoor unit models which can be connected.
• Total capacity/quantity of indoor units
2-2 Standard operation limit
Normal operation
The figures below assume following operating conditions for indoor
and outdoor units:
Equivalent pipe length
From outdoor unit to BP unit..................................... 16.4 ft (5 m)
From BP unit to indoor unit.......................................... 9.8ft (3 m)
Level difference ............................................................. 0 ft (0 m)
(H/P model only)
A Outdoor temperature (°FDB / °CDB)
B Indoor temperature (°FWB / °CWB)
C Outdoor temperature (°FWB / °CWB)
D Indoor temperature (°FDB / °CDB)
Range for continuous operation
Range for pull down operation
Range for warming up operation
2-3 Spec list
For operating conditions marked with a *(a)(b) in the table, see “2-2
Standard operation limit”.
2-4 Electrical properties
For operating conditions marked with a *(c) in the table, see “2-2
Standard operation limit”.
Outdoor unit Total capacity of indoor units
Quantity of indoor units
Max. Min.
RMXS48LVJU 24000 - 62000 Btu/h 8 2
Cooling Heating
*(b)
B
*(c)
A
C
D
*(a)
115 (46)
104 (40)
50
(10)
95 (35)
23 (–5)
60 (15.5)
43 (6)
50 (10)
41 (5)
5 (–15)
73
(23)
66
(19)
82
(28)
50
(10)
57
(14)
70
(21)
82
(28)
57
(14)
unit : ˚F(˚C)
Model name RMXS48LVJU
Remarks
Refrigerant type
R410A
Wall
mounted
Cooling
performance
(MBh)
(kW)
48
14.1
* (a)
Heating
performance
(MBh)
(kW)
54
15.8
* (b)
Energy use during
cooling
(kW) 4.64
* (a)
Energy use during
heating
(kW)
3.98
* (b)
Duct
Cooling
performance
(MBh)
(kW)
48
14.1
* (a)
Heating
performance
(MBh)
(kW)
54
15.8
* (b)
Energy use during
cooling
(kW) 5.13
* (a)
Energy use during
heating
(kW)
5.27
* (b)
External dimensions
(height × width × depth)
(inch)
(mm)
52-15/16 × 35-7/16 × 12-5/8
1345 × 900 × 320
Mass
(lb.)
(kg)
283
129
Connec-
tion pip-
ing
Gas line piping
(inch)
(mm)
φ
3/4
φ
19.1
Liquid line piping
(inch)
(mm)
φ
3/8
φ
9.4
Model name
H/P
RMXS48LVJU
Remarks
Phase
Single
Frequency
(Hz)
60Hz
Voltage
(V)
208/230V
Voltage tolerance range
(%) ±10
Rated current for fuses
30
Maximum outdoor unit operat-
ing current
(A)
27
* (c)
01_EN_3P329623-1.fm Page 3 Friday, November 9, 2012 6:50 PM