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Inventor V5MFI32-60 Manual

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Page 36
Note On Adding Refrigerant
CAUTION
• Refrigerant charging must be performed after wiring, vacuuming, and the leak testing.
• DO NOT exceed the maximum allowable quantity of refrigerant or overcharge the system.
Doing so can damage the unit or impact it’s functioning.
• Charging with unsuitable substances may cause explosions or accidents. Ensure that the
appropriate refrigerant is used.
• Refrigerant containers must be opened slowly. Always use protective gear when charging the
system.
• For the R290 or R32 refrigerant model, make sure the condtions within the area have been
made safe by control of ammable material when the refrigerant added into air conditioner.
• DO NOT mix refrigerants types.
Some systems require additional charging depending on pipe lengths. The standard pipe length
varies according to local regulations. For example, in North America, the standard pipe length is
7.5m (25’) In other areas, the standard pipe length is 5m (16‘). The additional refrigerant to be
charged can be calculated using the following formula:
Liquid Side Diameter
R32 : (Total pipe length -
standard pipe length)x
12g(0.13oZ)/m(ft)
(Total pipe length -
standard pipe length)x
24g(0.26oZ)/m(ft)
(Total pipe length -
standard pipe length)x
40g(0.42oZ)/m(ft)
φ6.35(1/4”) φ9.52(3/8”) φ12.7(1/2”)
R22
(orifice tube in the indoor unit):
(Total pipe length -
standard pipe length)x
30g (0.32oZ)/m(ft)
(Total pipe length -
standard pipe length)x
65g(0.69oZ)/m(ft)
(Total pipe length -
standard pipe length)x
115g(1.23oZ)/m(ft)
R22
(orifice tube in the outdoor unit):
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m(ft)
(Total pipe length -
standard pipe length)
x30(0.32oZ)/m(ft)
(Total pipe length -
standard pipe length)
x60g(0.64oZ)/m(ft)
(Total pipe length -
standard pipe length)
x65g(0.69oZ)/m(ft)
R410A:
(orifice tube in the indoor unit):
(Total pipe length -
standard pipe length)
x30g(0.32oZ)/m(ft)
(Total pipe length -
standard pipe length)
x65g(0.69oZ)/m(ft)
(Total pipe length -
standard pipe length)
x115g(1.23oZ)/m(ft)
R410A:
(orifice tube in the outdoor unit):
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m(ft)
(Total pipe length -
standard pipe length)
x30g(0.32oZ)/m(ft)
Page 37
Before Test Run
A test run must be performed after the entire
system has been completely installed. Conrm
the following points before performing the test:
a) The indoor and outdoor units are properly
installed.
b)
Piping and wiring are properly connected.
c)
Ensure that there are no obstacles near the
inlet and outlet of the unit that might cause
poor performance or product malfunction.
d)
The refrigeration system does not leak.
e) The drainage system is unimpeded and
draining to a safe location.
f) The heating insulation is properly installed.
g)
The grounding wires are properly connected.
h)
The length of the piping and the added
refrigerant stow capacity have been
recorded.
i)
The power voltage is the correct voltage
for the air conditioner.
Failure to perform the test run may result in
unit damage, property damage or personal injury.
Test Run Instructions
1.
Open both the liquid and gas stop valves.
2.
Turn on the main power switch and allow the
unit to warm up.
3.
Set the air conditioner to COOL mode.
4.
For the Indoor Unit
a. Ensure the remote control and its buttons
work properly.
b.
Ensure the louvers move properly and can
be changed using the remote control.
c.
Double check to see if the room
temperature is being registered correctly.
d.
Ensure the indicators on the remote
control and the display panel on the indoor
unit work properly.
e.
Ensure the manual buttons on the indoor
unit works properly.
f. Check to see that the drainage system is
unimpeded and draining smoothly.
g. Ensure there is no vibration or abnormal
noise during operation.
5.
For the Outdoor Unit
a.
Check to see if the refrigeration system is
leaking.
b.
Make sure there is no vibration or
abnormal noise during operation.
c.
Ensure the wind, noise, and water
generated by the unit do not disturb your
neighbors or pose a safety hazard.
6. Drainage Test
a.
Ensure the drainpipe ows smoothly. New
buildings should perform this test before
nishing the ceiling.
b.
Remove the test cover. Add 2,000ml of
water to the tank through the attached
tube.
c.
Turn on the main power switch and run
the air conditioner in COOL mode.
d.
Listen to the sound of the drain pump to
see if it makes any unusual noises.
e.
Check to see that the water is discharged.
It may take up to one minute before the
unit begins to drain depending on the
drainpipe.
f. Make sure that there are no leaks in any of
the piping.
g.
Stop the air conditioner. Turn off the main
power switch and reinstall the test cover.
NOTE: If the unit malfunctions or does not
operate according to your expectations,
please refer to the Troubleshooting section
of the Owner’s Manual before calling
customer service.
Test Run 14
CAUTION
… 37 …


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