Kelvinator Air Conditioning
refrigerant pipe connection 11
10 installation/refrigerant pipe connection
Kelvinator Air Conditioning
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A
"
Tightening Connection
• Align the center of the pipes.
• Sufficiently tighten the flare nut with fingers, and
then tighten it with a spanner and torque wrench
as shown below.
Indoor unit tubing
Flare nut
Piping
s
Outer diam.
Tightening torque
(Kg.m)
Additional Tightening
Torque (Kg.m)
φ
6.35
1.6
2.0
φ
9.53
3.0
3.5
φ
12.7
5.0
5.5
φ
16.0
7.5
8.0
caution
• Excessive torque can break nut depending on
installation conditions.
E: Check
• Compare the flared work with the adjacent diagram.
• If flare is found to be defective, cut off the flared section
and do flaring work again.
Smooth all round
Improper flaring
Even length
all round
A: Cut the pipes and the cable.
1 Use the piping kit accessory (if applicable) or pipes
purchased locally.
2 Measure the distance between the indoor and the
outdoor unit.
3 Cut the pipes a little longer than the measured distance.
4 Cut the cable 1.5m longer than the pipe length.
B: Burr removal
1 Completely remove all burrs from the cut cross section
of pipe/tube.
2 Face the end of the copper pipe/tube in a downward
direction as you remove burrs in order to avoid burrs
dropping into the tubing.
Pipe
Reamer
Face down
caution
C: Putting flare nut on
Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr removal
Note: It is not possible to put them on after flaring work.
Flare nut
Copper tube
D: Flaring work
• Carry out flaring work using flaring tool as shown below.
• Firmly hold copper pipe in a die according to the
dimension shown in the table below.
Outer diam. (mm)
A(mm)
Max.
Min.
φ
6.35
1.3
0.7
φ
9.53
1.6
1.0
φ
12.7
1.8
1.0
φ
16.0
2.4
2.2
Securing of outdoor unit
• Anchor the outdoor unit with a bolt and nut 10 or 8
tightly and horizontally on a concrete or rigid mount.
Model
A(mm)
B(mm)
≤3.5kw
530
290
5.3kw
560
335
≥6.2kw
590
333
A
B
Air inlet
Air outlet
Air inlet
Drain joint installation
• If a drain elbow is used, the unit should be placed on
a stand which is taller than 3cm.
• If the unit is used in an area where temperature
falls below 0
O
C for 2 or 3 days in succession, it is
recommended not to use a drain elbow, as the drain
water may freeze and the fan will not rotate.
• Fit the seal into the drain elbow, then insert the drain
joint into the base pan hole of the outdoor unit, rotate
90 degrees to secure. Connect the drain joint with an
extension drain hose (Locally purchased), in instances
where you need to drain condensed water away from
the unit.
Seal
Seal
Drain pipe
Drain joint
Base pan hole of
outdoor unit
Refrigerant pipe connection
1 Flaring work
Main cause for refrigerant leakage is due to defects in
the flaring work. Carry out correct flaring work using the
following procedure:
Oblique
90 C
Roughness
Burr
Refrigerant pipe connection
Outdoor unit installation
Outdoor unit installation precautions
• Install the outdoor unit on a rigid base to prevent noise
and vibration.
• Select the air outlet direction so that discharged air is
not blocked.
• In case the installation location is exposed to strong
winds, make sure the fan operates properly by putting
the unit lengthwise along the wall or by using a shield
to minimise wind exposure.
• Especially in windy areas, install the unit to minimise
exposure to wind.
• For suspended installations, the installation bracket
should follow with technique requirement in the
installation bracket diagram. The installation wall
should be solid brick, concrete or of same construction,
or reinforced to minimise movement or vibration.
The connection between the wall bracket and the
air conditioner should be firm, stable and reliable.
• Ensure there are no obstacles which block flow air.
Strong
wind