by johnson controls
12
Installation Instructions
9
refrigerant will be charged.
Table 7
Model
Total Liquid Pipe Lenght (a+b+c+d+e)
ERJC(36)R
≤
40m
ERJC(42)R
≤
50m
Additional Refrigerant Char
ge2=∑Extra Liquid Pipe Length×22g/m
(
liquid pipe 1/4
’’
).
Note: if the total refrigerant pipe length is larger than that listed in the table above, the additional
refrigerant for the extra length of the pipe needs to be cha
r
ged as per 22g/m.
3) Example : ERJC (42) R
Fig.9
Table 8 Indoor Unit
Serial No.
Model
Indoor Unit
⑤
Ducted Type EUKC(09)R
Indoor Unit
④
Ducted Type EUKC(09)R
Indoor Unit
③
Ducted Type EUKC(09)R
Indoor Unit
②
Ducted Type EUKC(09)R
Indoor Unit
①
Ducted Type EUKC(18)R
Table 9 Liquid Refrigerant Pipe
Serial No.
e
d
c
b
a
Diameter
φ6.35
φ6.35
φ6.35
φ6.35
φ9.52
Length
20m
20m
15m
5m
5m
The total length of each liquid refrigerant pipe is: e+d+c+b+a=20+20+15+5+5=65m. Thus, the minimum
additional refrigerant charge
=
(65-50)
×
0.022=0.33kg (Note: no additional refrigerant is needed for the liquid
pipe within 50m).
4) Additional Refrigerant Charge Record
Table 10 Indoor Unit
No.
Indoor Unit Model
Additional Refrigerant Charge(kg)
1
2
……
N
Total
a
b
c
d
e
Summary of Contents for ERJC 36
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