21
Installation Manual
NOTE:
All wires between indoor and outdoor units must be connected by the qualified electric contractor.
● Electric wires must be connected correctly. Improper connection may cause malfunction.
● Tighten the terminal screws tightly.
● After tightening the screws, pull the wire sligltly to confirm whether it's firm or not.
● Make sure that the electric connections are earthed properly to prevent electric shock.
● Make sure that all wiring connections are secure and the cover plates are reinstalled properly. Poor installation may cause fire or
electric shock.
7.3.5 Installation of Indoor Unit
●The piping can be output from right, right rear, left or left rear.
1.When routing the piping and wiring from the left or right side of indoor unit, cut off the
tailings from the chassis when necessary(As shown in Fig.7)
Ł
Cut off tailing 1 when routing the wiring only;
ł
Cut off tailing 1 and tailing 2 when routing both the wiring and piping.
2.Take out the piping from body case; wrap the piping,
power cords, drain hose with the tape and then make
them pass through the piping hole. (As shown in Fig.8)
3.Hang the mounting slots of the indoor unit on the upper hooks of the mounting plate
and check if it is firm enough. (As shown in Fig.9)
4.The installation site should be 250cm or more above the floor.
7.3.6 Installation of Connection Pipe
1.Align the center of the pipe flare with the related valve.
2.Screw in the flare nut by hand and then tighten the nut with
spanner and torque wrench by referring to the following:
NOTE: Connect the connection pipe to indoor unit at first and then to outdoor unit. Handle piping
bending with care. Do not damage the connection pipe. Ensure that the joint nut
is tightened firmly, otherwise, it may cause leakage.
7.4 Check after Installation and Operation Test
7.4.1 Check after Installation
Fig.9
Mounting
plate
Fixing hook
Mounting
plate
Right
Right rear
Fig.8
Left rear
Left
Fig.7
Tailing 1
Tailing 2
Finally wrap it
with tape
Gas side piping
insulation
Water drainage pipe
Liquid side
Piping insulation
Gas side pipe
External connection
electric wire
Liquid side piping
Spanner
Torque
wrench
Piping
Taper nut
Indoor unit piping
Tube diameter
Tightening torque,approximate(N·m)
Ф6.35(1/4”)
14
̚
18N·m(140-180kgf.cm)
Ф9.52(3/8”)
34
̚
42N·m(340-420kgf.cm)
Ф12.7(1/2”)
49
̚
61N·m(490-610kgf.cm)
Ф15.88(5/8”)
68
̚
82N·m(680-820kgf.cm)
Items to be checked
Possible malfunction
Has it been fixed firmly?
The unit may drop, shake or emit noise.
Have you done the refrigerant leakage
test?
It may cause insufficient cooling(heating)
capacity
Is heat insulation sufficient?
It may cause condensation and dripping.
Is water drainage satisfactory?
It may cause condensation and dripping.
Is the voltage in accordance with the
rated voltage marked on the nameplate?
It may cause electric malfunctionor
damage the product.
Is the electric wiring and piping
connection installed correctly and
securely?
It may cause electric malfunction or
damage the part.
Has the unit been connected to a secure
earth connection?
It may cause electrical leakage.
Is the power cord specified?
It may cause electric malfunctionor
damage the part.
Are the inlet and outlet openings
blocked?
It may cause insufficient cooling(heating)
capacity.
Is the length of connection pipes and
refrigerant capacity been recorded?
The refrigerant capacity is not accurate.
