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3.Installation of outdoor unit
Connection between indoor and outdoor unit
Connect the wires from the indoor unit to the terminal block
·
correctly.
Take care not to enable the wires to contact pipe.
·
Loosen the
terminal screws
Terminal block
·Don't make wrong connection.The air conditioner can't
operate normally in case of wrong connection.
·Tighten the screws to avoid looseness.
·Pull the wires slightly to verify whether they are tightened.
Be sure to use this wire clip to fix indoor·outdoor unit's
connection wire
in good order.
A
Fixed screw
Fix the service board of outdoor unit well.Otherwise,fire
and electric shock may result from entry of dust and
moisture.
The mounting surface of the air conditioner should be
·
solid enough to bear the weight.The bearing capacity
shall not be lower than actually born weight(at least
200kg/m²).
The mounting surface is decorated with wooden,
·
metallic or non-metallic structure.Corresponding
measures like reinforcement support and anti-vibration
shall be taken in case of insufficient strength.
Installation rack shall be such a fixture that the air
·
conditioner can be fixed securely on the mounting
surface.
Confirm the diameter and depth of the mounting hole for
·
the fixture based on hardness of the mounting surface
material,select applicable expansion bolt to ensure
unit's stability,firmness and reliability.
Try to avoid rainy days,windy and snowy days as well
·
as thundery days during installation.If necessary,
relevant measures shall be taken to protect people
from injury.
36
Wire
Caution
Warning
Caution
4.Complete indoor·outdoor unit connection
and perform test run
4-1 Piping connection
① Indoor unit piping
Connect liquid and gas pipes to the unit.
First,align with the center,tighten the pipe nut with hand until
you can't proceed.
Refer to the following torque table,use two wrenches to tighten
the indoor unit side connection pipe connector.Take care not to
tighten it excessively to avoid damaging the flared part.
Pipe diameter
torque Tightened
mm
Inch
N·m
13.7 to 17.7
6.35
1/4
34.3 to 41.2
9.52
3/8
49.0 to 56.4
12.7
1/2
Warning
• When installing the unit,securely connect the refrigerant
pipes before starting the compressor.
②Outdoor unit connection
As the same connection with that of indoor unit,connect the pipe
to the outdoor unit stop valve(two or three-way)pipe connector.
Tighten the connector with the same torque as that of indoor unit
by torque wrench or common wrench.
Heat insulation and wrapping band
Pipes and valves connected at side of indoor unit should be
①
heat insulated.
All pipes starting from the outdoor unit's pipe entrance shall be
②
wrapped with band
E
.
Fix the end of band
E
with tape.
If the pipe goes through ceiling,toilet or other locations with
high temperature and high humidity,please wrap the pipe
with commercially available heat insulated band to avoid
condensation.
4-2 Vacuumizing and leak detection test
Vacuumizing
Connect the refrigerant pipe(liquidnd gas)between indoor and out door unit
Remove the stop valve's service cap at the gas pipe of outdoor unit
(Vacuumizing can't be done without removing the cap)
When vacuum pump is recommended to be used
Connect the Manifold valve with gauge and vacuum pump to the stop
valve's service port at the gas pipe of outdoor unit
Run the vacuum pump(vacuumize the pipe over 15 minutes)
Check the vacuum with the manifold valve with gauge,close the vavle and stop the pump
Stop valve Liquid pipe
Manifold valve with gauge
Connection pipe
Vacuum pump
Remove the
Manifold valve with gauge from the stop valve service port quickly
Open all
the stop valves at liquid and gas pipes,or performance
reduction or failure may result
It's uncessary to add refrigerant
if pipe length is within the scope
Screw the service cap securely
Screw the caps of two stop valves securely
Make a leakage detection test
kgf·cm
140 to 180
350 to 420
500 to 575
Hexagon wrench
Gas pipe
Cap
Stop valve
Service port
It's ncessary to add proper refrigerant
if pipe length exceeds the scope
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