Vacuuming And Charging; Additional Charge - ascon IM-5MSY-1009-ACSON Manual De Instalación

Purging the piping and the indoor unit
Except for the outdoor unit which is pre-charged with
refrigerant R410A, the indoor unit and the refrigerant
connection pipes must be air-purged because the air
containing moisture that remains in the refrigerant cycle
may cause malfunction of the compressor.
• Make sure all pipes are connected securely to the outdoor
and indoor valves.
• Remove the caps from the fl are valves and the service.
Take note that there are a total of two service ports for
5MSY20B/BR, three service ports for 5MSY25B/BR and
four service ports for 5MSY30B/BR.
• Connect the center of the charging gauge to the vacuum
pump.
• Connect the charging gauge to the 3-way valveʼs service
port. (The numbers of service ports depend on the O/D unit
model).
• Start the vacuum pump. Evacuate for approximately 30
minutes. The evacuation time varies with different vacuum
pump capacity. Confi rm that the charging gauge needle has
moved towards -760mmHg.
• Proceed to the next 3-way valve and repeat the steps
above.
! CAUTION
• If the gauge needle does not move towards -760mmHg, be
sure to check for gas leaks (using the refrigerant detector)
at fl are type connection of the indoor and outdoor unit and
repair the leak before proceeding to the next step.
• Close the valve of the charging gauge and stop the vacuum
pump.
• On the outdoor unit, open the suction valve (3-way) and
liquid valve (2-way) (in anti-clockwise direction) with 4mm
key for hexagon sacked screw.
Allen key
Service port
• R410A must be charged as liquid. Usually R410A cylinder is equipped with a dip-pipe for liquid withdrawal. If there is
no dip-pipe, the cylinder should be inverted so as to withdraw liquid R410A from the valve.
• Do not top-up when servicing leak, as this will reduce the unit performance. Vacuum the unit thoroughly and then charge
the unit with fresh R410A according to the amount recommended in the specifi cation.
1 IM 5MSY-1009(1)_EN.indd 09 1 IM 5MSY-1009(1)_EN.indd 09
All manuals and user guides at all-guides.com

VACUUMING AND CHARGING

Refrigerant piping
Flare nut
Outdoor unit 3 way valve
! CAUTION
Liquid side
Indoor Unit
Gas side
Open
Vacuum
Hi
pump
Low
Close

Additional charge

The refrigerant is pre-charged in the outdoor unit for specifi c
piping length. Please refer to for further details on additional
charge.
Charge operation
This operation must be done by using a cylinder and a precise
weighing machine. The additional charge is topped up into the
outdoor unit using the suction valve via the service port.
• Remove the service port cap.
• Connect the low pressure side of the charging gauge to the
suction service port center of the cylinder tank and close
the high pressure side of the gauge. Purge the air from the
service hose.
• Start the air conditioner unit.
• Open the cylinder and low pressure charging valve.
• When the required refrigerant quantity is pumped into the
unit, close the low pressure side and the cylinder valve.
• Disconnect the service hose from service port. Put back the
service port cap.
Liquid side
Indoor Unit
Gas side
Check
valve
Low Hi
Open
Close
1-9
Outdoor Unit
Discharge valve
Close
Suction valve
Close
Outdoor Unit
Discharge valve
Open
Suction valve
Open
1/7/10 3:57:24 PM 1/7/10 3:57:24 PM