13
CHAPTER
3
Specifications /
5. Characteristic curve
Attention
1. The running current and input power are based on 230V/50Hz.
2. The cooling and heating capacities are based on the air conditions listed below and the rated airflow of fan speed 4.
Cooling Indoor: 27°CDB/19°CWB Outdoor: 35°CDB/24°CWB
Heating Indoor: 20°CDB/15°CWB Outdoor: 7°CDB/6°CWB
3. The first figure in ( ) of the capacity specification is the heat recovery energy of the Lossnay unit. The second figure is the
capacity specification for the Dx-coil connected to the outdoor unit.
4. ”Performance index” is the calculated value at the temperature conditions above and is reference purpose only.
Performance index = Total capacity ÷ total power consumption of outdoor unit and Lossnay unit
5. The external static pressure listed above includes the static pressure loss of the Dx-coil unit when using a 50cm straight duct
between the Lossnay and Dx-coil units. When the duct work between the Lossnay and Dx-coil units is longer and/or bent,
the pressure loss of the duct work should be included in the pressure loss calculation.
6. The designed airflow of the system (Lossnay, Dx-coil and duct work) at fan speed 3 and 4 should be kept within “Airflow range
at SP3 and SP4” listed above. This range is shown as the solid line in graphs of the characteristics curve.
If the Lossnay airflow is out of this range, the compressor of the outdoor unit may stop for self-protection purposes.
7. By installing the Dx-coil unit with a Lossnay unit, the air blow noise level is quieter at fan speed 4 as shown below.
LGH-50RVX-E: about 4dB quieter, LGH-65RVX-E: about 7dB quieter
LGH-80RVX-E: about 6dB quieter, LGH-100RVX-E: about 7dB quieter
LGH-150,200RVX-E: about 3dB quieter
LGH-150,200RVXT-E: about 3dB quieter, LGH-250RVXT-E: about 4dB quieter
8 .Refrigerant leakage contributes to climate change. Refrigerant with lower global warming potential (GWP) would contribute
less to global warming than a refrigerant with higher GWP, if leaked to the atmosphere.
This appliance contains a refrigerant fluid with a GWP equal to 1975. This means that if 1kg of this refrigerant fluid would be
leaked to the atmosphere, the impact on global warming would be 1975 times higher than 1kg of CO
2
, over a period of 100
years. Never try to interfere with the refrigerant circuit yourself or disassemble the product yourself and always ask a professional.
9. On-site measurements by pitot tube method could be as much 20% difference from JIS test room conditions. If the measuring
point is close to sources of turbulence like bends, contractions and dampers etc., it is difficult to measure air volume correctly.
A straight duct length more than 10D (D=duct diameter or equivalent) from the source of turbulence is recommended for
correct measurement.
On-site measurement should therefore be measured in accordance with BSRIA guideline
(Commissioning Air Systems. Application procedures for buildings AG3/89.3(2001)).
5. Characteristic curve
LGH-50RVX-E
LGH-65RVX-E
0
20
40
60
80
100
120
140
160
180
0
100
200
300
400
500
600
700
Air volume
(m
3
/h)
(L/s)
SP1
SP2
SP3
SP4
Enthalpy cooling
Enthalpy heating
Without GUG-01SL-E
With GUG-01SL-E
Temperature
60
70
80
90
Exchange ef
ficiency (%)
0
50
100
150
200
250
300
350
Static pressure (Pa)
Air volume
Without GUG-01SL-E
With GUG-01SL-E
(m
3
/h)
(L/s)
0
20 40 60 80 100 120 140 160 180 200 220 240 260
0
100
200
300
400
500
600
700
800
900 1000
SP1
SP2
SP3
SP4
Enthalpy cooling
Enthalpy heating
Temperature
0
50
100
150
200
250
300
350
Static pressure (Pa)
60
70
80
90
Exchange ef
ficiency (%)
Following figures show air volume drop when connecting Dx-coil unit.
The air flow range is limited because of the protection for overload of outdoor unit when Dx-coil unit is connected.
Summary of Contents for GUG-01SL-E
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