Mitsubishi Electric City Multi CMB-WP108V-G, Руководство по обслуживанию

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[
VIII
Test Run Mode ]
- 122 - HWE1113B GB
3. Amount of refrigerant to be added
The amount of refrigerant that is shown in the table below is factory-charged to the outdoor units.
The amount necessary for extended pipe (field piping) is not included and must be added on site.
(1) Calculation formula
The amount of refrigerant to be added depends on the size and the length of field piping. (unit in m[ft])
Round up the calculation result to the nearest 0.1kg. (Example: 18.04kg to 18.1kg)
(2) Example
(3) Sample calculation
Outdoor unit model WP200 WP250
Amount of pre-charged refrigerant
in the outdoor unit (kg)
11.8 11.8
Amount of added refrigerant (kg) = (0.16 x L
1
) + (0.11 x L
2
) +
Ș
1
L
1
: Length of ø19.05 [3/4"] high pressure pipe (m)
L
2
: Length of ø15.88 [5/8"] high pressure pipe (m)
Ș
1
:Refer to the table below.
Outdoor unit index
WP200 WP250
Diameter of high-
pressure pipe
ø
15.88
ø
19.05
Outdoor unit total index
Amount for the HBC controller
Ș
1
(kg)
WP200, WP250 models 3.0
[ WP2 00, WP2 50 Y J M ]
A
O utdoor unit
HBC c ontroller
Indoor unit
(1 5 ~ 50 )
Indoor unit
(1 5 ~ 50 )
Indoor unit
(1 5 ~ 50 )
Indoor unit
(1 5 ~ 50 )
Indoor 1 : 50 A : ø 1 9 . 05 4 2 m
At t h e
c onditions
below :
2 : 50
3: 50
4: 40
O utdoor WP2 50
T h e total lengt h o f ea ch li q uid line is as f ollows :
ø 1 9 . 05: A = 4 2 m , α
1
=3 . 0
T h ere f ore ,
< Cal c ulation example >
Additional re f rigerant ch arge
= 4 2 × 0 .1 6+3 . 0
= 9 . 7 2 k g
* All pipe wor k ex c ept A is water pipe wor k .