AUX-DC inverter ARV outdoor unit individual series technical manual
91
The installation location should be easy for drainage;
It shouldn’t be installed in places (such as kitchen, laundry and mechanical workshop, etc.) of heat
source, vapor source and more oil mist to prevent degradation of heat exchanger, electric shock and
unit damage caused by plastic parts corrosion;
Install in the place at least 1m away from TV and radio to prevent interfering TV and radio.
There should be certain space between the surrounding and outdoor unit for maintenance.
The unit must be well ventilated if installed in closed room. In case of refrigerant leakage,
immediately stop the system, timely contact maintenance personnel and avoid fire on site.
Tool
Application
R410A
Reasons
Pipe cutter
cutting tube
○
——
Flaring
tool
flaring tube and
flaring opening when
welding
▲
It’s required to increase extension allowance of
copper tube when using R410A.
Tube bender
bending tube
○
——
Torque
wrench
tightening flare nut
▲
The torque of 1/2 and 5/8 is increased and torque
reference is changed
Welding
torch, 2B
silver solder
welding tube
○
——
Oxygen,
acetylene
○
——
Nitrogen
○
Prevent the oxidation of the copper pipe while welding
Vacuum
pump with
return flow
stop valve
(pumping
speed
≥
4L/S)
Vacuum piping
system
▲
Don’t use original vacuum pump. It must be ensured
that the oil in vacuum pump can’t flow into A/C
system.
Refrigerant
holder
dosing of refrigerant
charge
▲
R410A should be charged in liquid state.
Electronic
scale
○
——
Pressure
gauge
inspection equipment
refrigerant pressure
while vacuuming,
charging ,running
▲
The old pressure gauge can’t be used due to the need
of different pressure.
MAX: HP5.3Mpa LP3.5Mpa
Connecting
hose
▲
Leak detector
Checking the leakage
of system
▲
Don’t use Freon leak detector of CFCs or HCFCs,
because there is no chlorine in new refrigerant. It’s
necessary to use hydrogen leak
detector or
R134a
leak
detector.
Note
:
○
universal ▲special for R410A
Содержание ANB66FVAMT
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