mm
6.35
12.7
Inch
1/4
1/2
N·m
13.7-17.7
49.0-56.4
kgf·cm
140-180
500-575
3. Installation of outdoor unit
Connection between indoor and outdoor unit
•The air conditioner can’t operate normally in case of wrong
connection.
•Tighten terminal screws to avoid looseness.
•After tightening of the screws, pull the wires slightly to verify
whether they are tightened.
Fix the service board of outdoor unit well. Otherwise, fire and electric
shock may result from entry of dust and moisture.
4.Complete indoor/outdoor unit connection and
perform test run
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.
Heat insulation and wrapping band
Pipes and valves connected at side of indoor unit should be heat
insulated.
All pipes starting from the outdoor unit’s pipe entrance shall be
wrapped with band
E
.
Pipe diameter
Torque tightened
As the same connection with that of indoor unit, connect the pipe
to the outdoor unit stop valve (two or three-way) pipe connector.
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/m
2
).
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.
Be sure to use this wire clip to fix
indoor/outdoor unit’s connection wire
in good order.
Fixed screw
A
·
Connect the wires from the indoor unit to the terminal bed correctly.
Take care not to enable the wires to contact pipe.
·
·
·
·
·
·
Indoor unit piping
Connect liquid and gas pipes to the unit.
·
·
Outdoor unit connection
Tighten the connector with the same torque as that of indoor
unit by torque wrench or common wrench.
·
①
①
②
②
·
·
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.
Loose the terminal
screws
Terminal block
Wire
Caution
Warning
Caution
When vacuum pump is recommended to be used
Remove the stop valve;s service cap at the gas.pipe of outdoor unit
(Vacuumizing can't be done without removing the cap)
Connect the refrigerant pipe(liquidnd gas) between the indoor and out door unit
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 valve and stop the 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 unnecessary to add refrigerant if pipe
length is within the scope.
It's necessary to add proper refrigerant
if pipe length exceeds the scops
Screw the service cap securely.
Screw the caps of two stop valves securely.
Make a leakage detection test.
Vacuumizing
Stop valvev
Liquid pipe
hexagon
wrench
Gas pipe
Cap
Stop valve
Service port
Manifold valve
with gauge
Connection
pipe
Vacuum pump
4-1 Piping connection
WARNING
When installing the unit, securely connect the refrigerant pipes
before starting the compressor.
Installation instructions
4-2 Vacuumizing and leak detection test
23
Grounding
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