Auto Restart Function - Mitsubishi Electric MSZ-AP60VG Installation Manual

4. Evacuation Procedures, Leak Test, and Test Run 4. Evacuation Procedures, Leak Test, and Test Run
4-1. Evacuation Procedures and Leak Test 4-1. Evacuation Procedures and Leak Test
1) Remove service port cap of stop valve on the side of the outdoor unit gas pipe. (The stop 1) Remove service port cap of stop valve on the side of the outdoor unit gas pipe. (The stop
valves are fully closed and covered in caps in initial state.) valves are fully closed and covered in caps in initial state.)
2) Connect gauge manifold valve and vacuum pump to service port of stop valve on the gas 2) Connect gauge manifold valve and vacuum pump to service port of stop valve on the gas
pipe side of the outdoor unit. pipe side of the outdoor unit.
Valve stem (inside) Valve stem (inside)
Stop valve cap Stop valve cap
(Torque 19.6 to (Torque 19.6 to
Close Close
29.4 N•m, 200 29.4 N•m, 200
Open Open to 300 kgf•cm) to 300 kgf•cm)
Hexagonal wrench Hexagonal wrench
Service port cap Service port cap
(Torque 13.7 to (Torque 13.7 to
17.7 N•m, 140 to 17.7 N•m, 140 to
180 kgf•cm) 180 kgf•cm)
Precautions when using the control valve Precautions when using the control valve
Service port Service port
A A
Open Open
Body Body
Close Close
Charge hose Charge hose
Control Control
valve valve
3) Run the vacuum pump. (Vacuumize until 500 microns is achieved.) 3) Run the vacuum pump. (Vacuumize until 500 microns is achieved.)
4) Check the vacuum with gauge manifold valve, then close gauge manifold valve, and stop 4) Check the vacuum with gauge manifold valve, then close gauge manifold valve, and stop
the vacuum pump. the vacuum pump.
5) Leave as it is for one or two minutes. Make sure pointer gauge manifold valve remains 5) Leave as it is for one or two minutes. Make sure pointer gauge manifold valve remains
in the same position. Confirm that pressure gauge shows –0.101 MPa (Gauge) (–760 in the same position. Confirm that pressure gauge shows –0.101 MPa (Gauge) (–760
mmHg). mmHg).
6) Remove gauge manifold valve quickly from service port of stop valve. 6) Remove gauge manifold valve quickly from service port of stop valve.
To avoid risk of fire, make sure that there are no flammable hazards or ignition To avoid risk of fire, make sure that there are no flammable hazards or ignition
risks before opening the stop valves. risks before opening the stop valves.
7) After refrigerant pipes are connected and evacuated, fully open the valve stem of all stop 7) After refrigerant pipes are connected and evacuated, fully open the valve stem of all stop
valves on both sides of gas pipe and liquid pipe by the hexagonal wrench. If the valve valves on both sides of gas pipe and liquid pipe by the hexagonal wrench. If the valve
stem hits the stopper, do not turn it any further. Operating without fully opening lowers stem hits the stopper, do not turn it any further. Operating without fully opening lowers
the performance and this causes trouble. the performance and this causes trouble.
8) Refer to 1-3., and charge the prescribed amount of refrigerant if needed. Be sure to charge 8) Refer to 1-3., and charge the prescribed amount of refrigerant if needed. Be sure to charge
slowly with liquid refrigerant. Otherwise, composition of the refrigerant in the system may slowly with liquid refrigerant. Otherwise, composition of the refrigerant in the system may
be changed and affect performance of the air conditioner. be changed and affect performance of the air conditioner.
9) Tighten cap of service port to obtain the initial status. 9) Tighten cap of service port to obtain the initial status.
10) Leak test 10) Leak test
5. Connection Setup of the Wi-Fi Interface (VGK Type Only) 5. Connection Setup of the Wi-Fi Interface (VGK Type Only)
This product is equipped with the Wi-Fi Interface as standard. This product is equipped with the Wi-Fi Interface as standard.
Refer to the SETUP QUICK REFERENCE GUIDE and OPERATING INSTRUCTIONS provided with the indoor unit for connection with the router. Refer to the SETUP QUICK REFERENCE GUIDE and OPERATING INSTRUCTIONS provided with the indoor unit for connection with the router.
Compound pressure gauge Compound pressure gauge
– –
0.101 MPa 0.101 MPa
(for R32, R410A) (for R32, R410A)
– –
( ( 760 mmHg) 760 mmHg)
Pressure gauge Pressure gauge
(for R32, R410A) (for R32, R410A)
Stop valve Stop valve
for LIQUID for LIQUID
Gauge manifold valve Gauge manifold valve
(for R32, R410A) (for R32, R410A)
Handle Handle
Low Low
Handle High Handle High
Charge hose Charge hose
Stop valve for Stop valve for
(for R32, R410A) (for R32, R410A)
GAS GAS
Adapter for Adapter for
preventing the preventing the
back flow back flow Vacuum pump (or the vacuum Vacuum pump (or the vacuum
pump with the function to pump with the function to
prevent the back flow) prevent the back flow)
When attaching the control valve When attaching the control valve
to the service port, valve core may to the service port, valve core may
deform or loosen if excess pressure deform or loosen if excess pressure
is applied. This may cause gas leak. is applied. This may cause gas leak.
When attaching the control valve to When attaching the control valve to
the service port, make sure that the the service port, make sure that the
valve core is in closed position, and valve core is in closed position, and
then tighten part A. Do not tighten then tighten part A. Do not tighten
part A or turn the body when valve part A or turn the body when valve
core is in open position. core is in open position.
Warning Warning
4-2. Test Run 4-2. Test Run
1) Insert power supply plug into the power outlet and/or turn on the 1) Insert power supply plug into the power outlet and/or turn on the
breaker. breaker.
2) Pressing the E.O. SW will perform a test run for 30 minutes. 2) Pressing the E.O. SW will perform a test run for 30 minutes.
(For MSZ, pressing the switch once will perform cooling operation (For MSZ, pressing the switch once will perform cooling operation
and twice will perform heating operation.) If the upper lamp of the and twice will perform heating operation.) If the upper lamp of the
operation indicator blinks every 0.5 seconds, inspect the indoor/ operation indicator blinks every 0.5 seconds, inspect the indoor/
outdoor unit connecting wire (A) for mis-wiring. After the test run, outdoor unit connecting wire (A) for mis-wiring. After the test run,
emergency mode (set temperature 24ºC) will start. emergency mode (set temperature 24ºC) will start.
3) To stop operation, press the E.O. SW several times until all LED 3) To stop operation, press the E.O. SW several times until all LED
lamps turn off. Refer to operating instructions for details. lamps turn off. Refer to operating instructions for details.
4) Checking the remote (infrared) signal reception 4) Checking the remote (infrared) signal reception
• Press the OFF/ON button on the remote controller (3) and • Press the OFF/ON button on the remote controller (3) and
check that an electronic sound is heard from the indoor unit. check that an electronic sound is heard from the indoor unit.
Press the OFF/ON button again to turn the air conditioner off. Press the OFF/ON button again to turn the air conditioner off.
• Once the compressor stops, the restart preventive device • Once the compressor stops, the restart preventive device
operates so the compressor will not operate for 3 minutes to operates so the compressor will not operate for 3 minutes to
protect the air conditioner. protect the air conditioner.

4-3. Auto Restart Function

4-3. Auto Restart Function
This product is equipped with an auto restart function. When the power supply is stopped This product is equipped with an auto restart function. When the power supply is stopped
during operation, such as during blackouts, the function automatically starts operation in during operation, such as during blackouts, the function automatically starts operation in
the previous setting once the power supply is resumed. (Refer to the operating instructions the previous setting once the power supply is resumed. (Refer to the operating instructions
for details.) for details.)
Caution: Caution:
• After test run or remote signal reception check, turn off the unit with the E.O. SW or • After test run or remote signal reception check, turn off the unit with the E.O. SW or
the remote controller before turning off the power supply. Not doing so will cause the the remote controller before turning off the power supply. Not doing so will cause the
unit to start operation automatically when power supply is resumed. unit to start operation automatically when power supply is resumed.
To the user To the user
• After installing the unit, make sure to explain the user about auto restart function. • After installing the unit, make sure to explain the user about auto restart function.
• If auto restart function is unnecessary, it can be deactivated. Consult the service • If auto restart function is unnecessary, it can be deactivated. Consult the service
representative to deactivate the function. Refer to the service manual for details. representative to deactivate the function. Refer to the service manual for details.
4-4. Explanation to the User 4-4. Explanation to the User
• Using the OPERATING INSTRUCTIONS, explain to the user how to use the air conditioner • Using the OPERATING INSTRUCTIONS, explain to the user how to use the air conditioner
(how to use the remote controller, how to remove the air filters, how to clean, precautions (how to use the remote controller, how to remove the air filters, how to clean, precautions
for operation, etc.). for operation, etc.).
• Recommend the user to read the OPERATING INSTRUCTIONS carefully. • Recommend the user to read the OPERATING INSTRUCTIONS carefully.
Emergency operation Emergency operation
switch (E.O. SW) switch (E.O. SW)