Test Running - AERMEC MGH R410A Manuel D'installation

1. Check that all tubing and wiring have been
properly connected.
2. Check that the gas and liquid side service
valves are fully open.
1. Prepare remote control
Remove the battery cover
1
by pulling it according to
the arrow direction.
Insert new batteries
2
making sure that the (+)
and (–) of battery are
installed correctly.
Reattach the cover by
3
pushing it back into
position.
NOTE:
• Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.
• Remove the batteries from the remote control
if the system is not going to be used for a
long time.
2. Settlement of outdoor unit
Anchor the outdoor unit with a bolt and
nut(ø10mm) tightly and horizontally on a
concrete or rigid mount.
When installing on the wall, roof or rooftop,
anchor the mounting base securely with a
nail or wire assuming the influence of wind
and earthquake.
In the case when the vibration of the unit is
conveyed to the hose, secure the unit with
an anti-vibration rubber.
Bolt
3. Evaluation of the performance
Operate unit for 15~20 minutes, then check the
system refrigerant charge:
1. Measure the pressure of the gas side
service valve.
2. Measure the temperature of the intake and
discharge of air.
3. Ensure the difference between the intake
temperature and the discharge is more than
8°C (Cooling) or reversely (Heating).

TEST RUNNING

Tubing connection
Discharge air
4. For reference; the gas side pressure of
optimum condition is as below. (Cooling)
Outside ambient
Refrigerant
TEMP.
R-22 35°C (95°F)
R-410A 35°C (95°F)
NOTE: If the actual pressure are higher than
shown, the system is most likely over-
charged, and charge should be
removed. If the actual pressure are
lower than shown, the system is most
likely undercharged, and charge should
be added.
The air conditioner is now ready for use.
PUMP DOWN
This is performed when the unit is to be
relocated or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant in the
outdoor unit without loss in refrigerant gas.
CAUTION:
Be sure to perform Pump Down procedure with the
unit cooling mode.
Pump Down Procedure
1. Connect a low-pressure gauge manifold hose to the
charge port on the gas side service valve.
2. Open the gas side service valve halfway and purge the
air from the manifold hose using the refrigerant gas. But,
this refrigerant gas must be recovered .
Don't vent the refrigerant in the atmosphere.
3. Close the liquid side service valve(all the way in).
4. Turn on the unit's operating switch and start the cooling
operation.
5. When the low-pressure gauge reading becomes 1 to
0.5kg/cm 2 G(14.2 to 7.1 P.S.I.G.), fully close the gas side
valve stem and then quickly turn off the unit. At that time,
Pump Down has been completed and all refrigerant gas
will have been collected in the outdoor unit.
16
Intake temperature
Discharge
temperature
The pressure of the gas side
service valve.
4~5kg/cm 2 G(56.8~71.0 P.S.I.G.)
8.5~9.5kg/cm 2 G(120~135 P.S.I.G.)