Technibel Climatisation CAFM, Installation Instructions Manual, Page: 14 / 130

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1-7. Additional Refrigerant Charge
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Table 1-16 Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size Amount of refrigerant
charge/m (g/m)
ø6.35 26
ø9.52 56
Required amount of charge = (Amount of refrigerant
charge per meter of each size of liquid tube
×
its tube
length) + (...) + (...)
*Always charge accurately using a scale for weighing.
Table 1-17 Refrigerant Charge Amount at Shipment (for outdoor unit)
1-8. System Limitations
Table 1-18 System Limitations
N u mber of max. co nn ectable i n door un it s
O u tdoor un it s (Type) 3 06 406 506
6 8 9
Max. allowable i n door/o u tdoor capacity ratio
50 – 1 3 0 %
Heat p u mp un it
GRFMI 3 06R5I
3 .5
GRFMI406R5I
3 .5
GRFMI506R5I
3 .5
(k g )
1-9. Tubing Length
Table 1-19 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
R410A di s trib u tio n joi n t
K70A056Z (for i n door un it)
Note: Do n ot us e commercially available T-joi n t s for the liq u id t u bi ng .
H2
LD
L1
L2
LC LB
LA
* Be su re to us e s pecial R410A di s trib u tio n joi n t s (K70A056Z: p u rcha s ed s eparately)
for o u tdoor un it co nn ectio ns a n d t u bi ng bra n che s .
Mai n t u be of un it
1 s t bra n ch
U n it di s trib u tio n t u be
1
2 3 n -1
n
L 3
H1
Item s Mark s Content s Len g th (m)
L1 Max. t u bi ng le ng th
Act u al le ng th 150
Eq u ivale n t le ng th 175
L (L2 – L 3 )
Differe n ce betwee n max. le ng th a n d mi n .
40
le ng th from the No.1 di s trib u tio n joi n t
1
,
2
~
n
Max. le ng th of each di s trib u tio n t u be 3 0
1
+
2
+~
n –1
Total max. t u bi ng le ng th i n cl u di ng le ng th of
200
each di s trib u tio n t u be (o n ly liq u id t u bi ng )
H1
Whe n o u tdoor un it i s i ns talled hi g her tha n i n door un it 50
Whe n o u tdoor un it i s i ns talled lower tha n i n door un it 40
H2 Max. differe n ce betwee n i n door un it s 15
L = Le ng th, H = Hei g ht
Allowable t u bi ng
le ng th
>
>
Allowable elevatio n
differe n ce
>
>
>
>
>
>
+L1
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown
in the figure below.
06-062 Mini ECO-i II for Technibel 2/8/06 4:32 PM Page 14