Specifications

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 Charge2=∑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 charged 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