Hisense Hi-Therma Serie Manual De Instalación Y Mantenimiento página 27

REFRIGERANT PIPING WORK
8.6.1 MINIMUM FLOOR AREA REQUIREMENTS
The following chart and table shows the minimum floor area
•
(A min ) required for the installation of an indoor unit from a
refrigerant system containing a certain refrigerant charge
(m c ) of R32 (A2L refrigerant), and supposing a total room
height not lower than 2.2 m. (According to IEC
60335-2-40:2018 and EN 378-1:2016).
For m c <1.84 kg, IEC 60335-2-40:2018 and EN 378-1:2016
•
do not establish any minimum floor area restriction. In that
case check local regulations to ensure that no hard
restrictions may apply.
A (m 2 )
Installation restrictions for indoor units using R32 refrigerant
min
120
100
80
60
40
20
0
1.5 2
Floor mounted
A = (m /(2.5*LFL
min c
• A : Minimum installation area of an Indoor unit for a given
min
refrigerant charge m (kg) and considering the installation
c
height h (m )
2
0
• h : Installation height of the bottom side of the indoor unit +
0
distance from the indoor unit bottom side to the lowest part for
which a refrigerant leak may release to the indoor area
• m : total system refrigerant charge that could be released to
c
the indoor area in case of undetected refrigerant leak.
• LFL: Lower Flammability Limit for R32, 0.307 kg/m
established by EN 378-1:2016 and ISO 817.
Minimum floor area for equipment installed inside
A (m )
2
min
m (kg)
Floor mounted
c
1.84 28.81
1.9 30.72
2.0 34.04
2.1 37.53
2.2 41.19
2.3 45.02
2.4 49.02
2.5 53.19
2.6 57.53
2.7 62.04
2.8 66.72
2.9 71.58
3.0 76.6
3.1 81.79
3.2 87.15
3.3 92.68
3.4 98.39
3.5 104.26
• The A in the table above is calculated according to the formula
min
(EQU.1) under the following conditions:
- Floor mounted: h = 0.6 m
0
- Wall mounted: h = 1.8 m
0
- Ceiling mounted: h = 2.2 m
0
• For safety, the A must be calculated according to the actual
min
installation by professionals.
m (kg)
2.5 3 3.5
c
Wall mounted Ceiling mounted
(EQU.1)
* h )
(5/4) 2
0
as
3
A (m ) A (m )
2 2
min min
Wall mounted Ceiling mounted
3.20 2.14
3.41 2.29
3.78 2.53
4.17 2.79
4.58 3.06
5.00 3.35
5.45 3.65
5.91 3.96
6.39 4.28
6.89 4.61
7.41 4.96
7.95 5.32
8.51 5.70
9.09 6.08
9.68 6.48
10.30 6.89
10.93 7.32
11.58 7.75
!
C A U T I O N
• Do not charge OXYGEN, ACETYLENE, or other flammable and
poisonous gases into the refrigerant because an explosion can occur. It
is recommended that oxygen free nitrogen be charged for these
types of tests cycle when performing a leakage test or an air-tightness
test. These types of gases are extremely dangerous.
• Check for refrigerant leakage in detail. If a large refrigerant leakage
occurred, it would cause difficulty with breathing or harmful gases
would occur if a fire were being used in the room.
NO T E
Fill in the label attached to the unit with the amount of refrigerant
charged and Tonnes of CO
2
gases contained on the installation.
!
D A N G E R
• Only use R32 as refrigerant. Other substances may cause explosions
and accidents.
• R32 is fluorinated greenhouse gases. Its global warming potential
(GWP) value is 675.
Do NOT vent these gases into the atmosphere.
• Tonnes of CO equivalent of fluorinated greenhouse gases contained
2
is calculated by GWP value of the refrigerant × Total refrigerant
charge [kg] / 1000 in the label.
8.7 CAUTION OF THE PRESSURE BY CHECK
JOINT
When the pressure is measured, use the check joint of the gas
stop valve.
At that time, connect the pressure gauge according to the
following table because of high pressure side and low pressure
side changes by operation mode.
Check joint of the gas stop valve:
Cooling Heating
operation operation
Low pressure High pressure
?
N O T E
Be careful that refrigerant and oil do not splash to the electrical parts
at removing the charge hoses.
16
equivalent of fluorinated greenhouse