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Pagina 8
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Incarcatura maxima pentru o camera trebuie sa fie in conformitate cu urmatoarea formula:
Page 2
m = 2,5 x (LFL) x h x (A)
The maximun charge in a room shall be in accordance with the following:
max
max
min
(5/4)
0
1/2
A = (M/(2,5 x (LFL) x h ))
min
min
(5/4)
0
0
2
2
2
3
or the required minumum floor area
A
to install an applicance with refrigerant charge
M(kg) shall be in accordance with following:
Where.
m
is the allowable maximum charge in a room, in kg;
M is the refrigerant charge amount in appliance, in kg;
A
is the required minimum room area, in m ;
A
is the room area, in m ;
LFL
is the lower flammable limit, in kg/m ;
h
is the release height, the vertical distance in metres from the floor to the point of
release when the appliance is installed;
h
= (
h
inst+
h
rel) or 0,6 m whichever is higher
h
rel is the release offset in metres from the bottom of the appliance to the point of
release
h
inst is the installed height in metres of the unit
Reference installed heights are given below:
0.0 m for portable and floor mounted;
1.0m for window mounted;
1.8m for wall mounted;
2.2m for ceiling mounted;
If the minimum installed height given by the manufacturer is higher than the reference
installed height, then in addition A
min
and m
max
for the reference installed height have to
be given by the manufacturer. An appliance may have multiple reference installed heights.
In this case, A
min
and m
max
calculations shall be provided for all applicable reference
installed heights.
For appliances serving one or more rooms with an air duct system, the lowest opening of the
duct connection to each conditioned space or any opening of the indoor unit greater than
5 cm , at the lowest position to the space, shall be used for h
0
. However, h
0
shall not be less
than 0,6 m. A
min
shall be calculated as a function of the opening heights of the duct to the
spaces and the refrigerant charge for the spaces where leaked refrigerant may flow to,
considering where the unit is located. All spaces shall have a floor area more than A
min
.
0
2
sau suprafata minima necesara a etajului
Amin pentru a instala o aplicatie cu incarcare de agent frigorific M (kg) trebuie sa fie in conformitate cu
urmatoarele:
Page 2
m = 2,5 x (LFL) x h x (A)
The maximun charge in a room shall be in accordance with the following:
max
max
min
(5/4)
0
1/2
A = (M/(2,5 x (LFL) x h ))
min
min
(5/4)
0
0
2
2
2
3
or the required minumum floor area
A
to install an applicance with refrigerant charge
M(kg) shall be in accordance with following:
Where.
m
is the allowable maximum charge in a room, in kg;
M is the refrigerant charge amount in appliance, in kg;
A
is the required minimum room area, in m ;
A
is the room area, in m ;
LFL
is the lower flammable limit, in kg/m ;
h
is the release height, the vertical distance in metres from the floor to the point of
release when the appliance is installed;
h
= (
h
inst+
h
rel) or 0,6 m whichever is higher
h
rel is the release offset in metres from the bottom of the appliance to the point of
release
h
inst is the installed height in metres of the unit
Reference installed heights are given below:
0.0 m for portable and floor mounted;
1.0m for window mounted;
1.8m for wall mounted;
2.2m for ceiling mounted;
If the minimum installed height given by the manufacturer is higher than the reference
installed height, then in addition A
min
and m
max
for the reference installed height have to
be given by the manufacturer. An appliance may have multiple reference installed heights.
In this case, A
min
and m
max
calculations shall be provided for all applicable reference
installed heights.
For appliances serving one or more rooms with an air duct system, the lowest opening of the
duct connection to each conditioned space or any opening of the indoor unit greater than
5 cm , at the lowest position to the space, shall be used for h
0
. However, h
0
shall not be less
than 0,6 m. A
min
shall be calculated as a function of the opening heights of the duct to the
spaces and the refrigerant charge for the spaces where leaked refrigerant may flow to,
considering where the unit is located. All spaces shall have a floor area more than A
min
.
0
2
Unde:
m
max este incarcarea maxima admisibila intr-o camera, in kg
M
este cantitatea de incarcare a agentului frigorific in aparat, in kg
A
min este suprafata minima necesara a camerei, in m
2
A
este suprafata camerei, in m
2
;
LFL
este limita inferioara de inflamabilitate, in kg /m
3
h
0 este inaltimea, distanta verticala in metri de la podea pana la punctul unde este instalata unitatea;
h
0 = (hinst + hrel) sau 0.6 m, oricare dintre acestea este mai mare
h
rel este decalajul in metri de la partea inferioara a aparatului pana la punctul de eliberare
h
inst reprezinta inaltimea instalata in metri a unitatii
Inaltimile de referinta pentru instalare sunt date mai jos:
0,0 m pentru portabil si montat pe podea; 1,0 m pentru montare pe fereastra;
1,8 m pentru montare pe perete;
2.2m pentru montaj pe tavan;
Daca inaltimea minima instalata data de producator este mai mare decat inaltimea instalata de referinta,
atunci Amin si mmax pentru inaltimea instalata de referinta trebuie sa fie furnizate de producator. Un aparat
poate avea inaltimi de referinta multiple. In acest caz, trebuie furnizate calcule Amin si mmax pentru toate
inaltimile de referinta aplicabile.
Pentru aparatele care deservesc una sau mai multe incaperi cu sistem de tip duct, cea mai joasa deschidere
a conexiunii de conducta la fiecare spatiu conditionat sau orice deschidere a unitatii interioare mai mare de 5
cm
2
, la cea mai joasa pozitie fata de spatiu, se utilizeaza pentru h
0
. Cu toate acestea, h
0
nu trebuie sa fie mai
mic de 0.6 m. A
min
se calculeaza in functie de inaltimile de deschidere ale ductului catre spatii si de sarcina de
agent frigorific pentru spatiile in care poate curge agentul frigorific pierdut, luand in considerare locul unde
este amplasata unitatea. Toate spatiile trebuie sa aiba o suprafata mai mare decat A
min
.