18
Connection of indoor unit
Connect the thick and thin pipes to the indoor unit.
Apply a thin coat of refrigerating oil at the pipes joint.
When connecting, first aim at the centre, then screw
the first 3-4 turns of the connecting nut by hand.
Take the wring torque diagram as the standard of indoor pipe’s connection, use two spaners to
tighten them, over-tighten will damage the flared part.
Connection of outdoor unit
Take the same way as that of the indoor unit, connect the pipe with the stop valve pipe of
outdoor unit.
Use a spanner to grip the valve and use the torque spanner to grip the connecting nut.
Connect the pipe to outdoor unit with the same wring torque as that of indoor unit connecting.
Attention:
Be careful and adopt suitable insulation thickness.If over thick, it will
cause accumulation at the back of the indoor unit, if too thin it will
cause dew and water dripping.
3-3 Drain Hose
For the convenience of draining off water, please incline the drain hose downward when ar-
range it (diagram 1). Do not make the connection of drain hose as diagram 2~5 illustrate.
If the drain hose installed on the indoor unit is not long
enough, please connect the drain hose in appendix.
If the drain hose needs pass through indoors, please wrap
it with heat insulation materials which are available on
the market.
3-4 Installation of Outdoor Wires
External diameter(mm)
1/4
3/8
1/2
Wring torque(kgfcm)
150~210
380~450
400~460
Incline
downward
Do not raise the
drain hose
Dripping
(1) (2) (3) (4) (5)
Dripping
air
The distance between the
hose end and the ground is
less than 5cm
The end of the
drain hose is
dipped into water
Drainage retention
Wave
Dripping
Indoor electric controlling
LF LV LC N
Outdoor terminal
white red brown blue
yellow-green
Indoor terminal
Outdoor electric controlling
white red brown blue
Electrical box
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