Precautions On Refrigerant Leakage - EAS Electric VRV EVR Series Instruction Manual

8. PRECAUTIONS ON REFRIGERANT
LEAKAGE
This air conditioner(A/C) adopts inncouous and nonflammable
refrigerant. The locating room of the A/C should big engough
that any refrigerant leakage is unable to reach critical thickness.
So certain esssential action can be taken on time.
Critical thickness------the Max. thickness of Freon without any
harm to person.
Refrigerant critical thickness: 0.44[kg/m ] for R410A.
Confirm the critical thickness through follow steps, and take
necessary actions.
1. Calculate the sum of the charge volume (A[kg]) Total
Refrigerant volume of 10HP=factory refrigerant
volume + superaddition
2. Calculate the indoor cubage (B[m ]) (as the minimum
cubage.
3. Calculate the refrigerant thickness
A[kg]
≤ critical thickness
3
B[m ]
▪ Implement field settings ▪ Implement field settings
▪ Energy-saving and optimized operation ▪ Energy-saving and optimized operation
Counter measure against over high thickness
1. Installmechanicalventilator to reduce the refrigerant thickness
i i
under critical level. (ventilate regularly)
2. Install leak alarm facility related to mechanical ventilator if
you can not regularly ventilate.
Outdoor unit
Indoor unit
Room full of leak refrigerant
(All refrigerant has run up)
b. Leak alarm related to mechanical ventilator
Indoor unit
(Leak hunting siren should be installed in
places easily keep refrigerant)
3
3
A. Ventilation
peristome
Fig. 8-1
8.1 Important information for the used
refrigerant
This product has the fluorinated gas, it is forbidden to release to air.
Refrigerant type: R410A; Volume of GWP: 2088;
GWP=Global Warming Potential
Model
Refrigerant/kg
20-28kW
33.5kW
Attention:
Frequency of Refrigerant Leak Checks
1)
For equipment that contains fluorinated greenhouse gases
in quantities of 5 tonnes of CO
less than 50 tonnes of CO
months, or where a leakage detection system is installed, at
least every 24 months
2) For equipment that contains fluorinated greenhouse gases in
quantities of 50 tonnes of CO
500 tonnes of CO
2
a leakage detection system is installed, at least every 12 months.
3) For equipment that contains fluorinated greenhouse gases in
quantities of 500 tonnes of CO
three months, or where a leakage detection system is installed,
at least every six months.
4) Non-hermetically sealed equipment charged with fluorinated
greenhouse gases shall only be sold to the end user where evidence
is provide that the installation is to be carried out by an undertaking
certified person.
5) Only certificated person is allowed to do installation, operation
and maintenance.
≤ ≤
21
Factory charge
tonnes CO equivalent
2
6.5
13.57
8
16.71
equivalent or more,but of
2
equipment,at least every 12
2
equivalent or more,but of less than
2
equipment,at least every six months, or where
equivalent or more,at least every
2
V.2