There are two refrigerant pipes of differing diameters:
◆
A smaller one for the liquid refrigerant
◆
A larger one for the gas refrigerant
◆
The inside of copper pipe must be clean & has no dust.
Remove the pinch pipe on the pipes and connect the assembly pipes to
each pipe, tightening the nuts, first manually and then with a torque
wrench, a spanner applying the following torque.
1
Must use insulator which is thick enough to cover the refrigerant pipe to
protect the condensate water on the outside of pipe falling onto the floor
and the efficiency of the unit will be better.
2
Cut off any excess foam insulation.
3
Be sure that there must be no crack or wave on the bended area.
4
It would be necessary to double the insulation thickness(10mm or more)
to prevent condensation even on the insulator when if the installed area is
warm and humid.
5
If the pipes must be shortened refer to page 17.
N
N
N
N
o
o
o
o
tt
tt
e
e
e
e
Outer Diameter
Torque (N•m)
6.35 mm (1/4")
18
9.52 mm (3/8")
42
12.70 mm (1/2")
55
15.88 mm (5/8")
65
19.05 mm (3/4")
100
22.23 mm (7/8")
100
Insulation
refrigerant pipe
Clamp
Refrigerant oil
Insulation
refrigerant pipe
Liquid refrigerant pipe
Gas
refrigerant
pipe
Torque wrench
Flare nut
Union
Spanner
E-
16
I
NSTALLING THE
I
NDOOR
U
NIT
Connecting the Refrigerant Pipe
❊
The designs and shape are subject to
change according to the model.
◆
Connect the indoor and outdoor units using pipes with flared
connections(not supplied).For the lines,use insulated,unwelded,
degreased and deoxidized copper pipe,(Cu DHP type to ISO 1337),
suitable for operating pressures of at least 4200kPa and for a burst
pressure of at least 20700kPa.Copper pipe for hydro-sanitary
|applications is completely unsuitable.
◆
For sizing and limits (height difference,line length,max.bends,
refrigerant charge,etc.)see the outdoor unit installation manual.
◆
All refrigerant connection must be accessible,in order to permit
either unit maintenance or removing it completely.
C
C
C
C
A
A
A
A
U
U
U
U
T
T
T
T
II
II
O
O
O
O
N
N
N
N
MH***FKEA IM_E_27682_4 5/25/04 3:28 AM Page 16
