Temperature Adjustment Operation Confirmation; Service Mode Operation; Caution For Refrigerant Leaks - Panasonic U-5MX3XPQB Manual De Instalación

8.5. Temperature adjustment operation confirmation
After the test run is over, operate the unit normally. (Heating is not
possible if the outdoor temperature is 24°C or higher.)
Make sure the indoor and outdoor units are operating normally
(If a knocking sound can be heard in the liquid compression of
the compressor, stop the unit immediately and then energize the
heater for a sufficient length of time before restarting the
operation.)
Run each indoor unit one at a time and make sure the
corresponding outdoor unit is also running.
Check to see if cold (or hot) air is coming out of the indoor unit.
Press the fan direction and fan strength buttons on the indoor
unit to see if they operate properly.
Cautions for normal operation check
Once stopping, the compressor will not restart in
about 5 minutes even if the Run/Stop button of an
indoor unit in the same system is pressed.
When the system operation is stopped by the remote
controller, the outdoor units may continue operating
for further 5 minutes at maximum.
After the test run, when handing the unit over to the
customer, make sure the electric box lid, the service
lid, and the unit casing are all attached.
9. S
ERVICE MODE OPERATION
Vacuuming method
At the first installation, this vacuuming is not required. It is required
only for repair purposes.
1 When the unit is at standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
ON
- After this is set, do not reset the setting mode 2 until the
vacuuming is finished.
- The H1P led is on and the remote controller indicates
(test operation) and
operation will be prohibited.
2 Evacuate the system with a vacuum pump.
3 Press the button and reset the setting mode 2.
BS1 MODE
Refrigerant recovery operation method
by a refrigerant reclaimer
1 When the unit is at standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
ON
- The indoor unit and the outdoor unit expansion valves will
fully open and some solenoid valves will be turned on.
- The H1P led is on and the remote controller indicates
(test operation) and
operation will be prohibited.
2 Cut off the power supply to the indoor units and the outdoor unit
with the circuit breaker. After the power supply to one side is cut
off, cut off the power supply to the other side within 10 minutes.
Otherwise, the communication between the indoor and outdoor
unit may become abnormal and the expansion valves will be
completely closed again.
3 Recover the refrigerant by a refrigerant reclaimer. For details,
see the operation manual delivered with the refrigerant
reclaimer.
U-5~48MX3XPQB
Urban Multi air conditioner
4PW21867-1A
(ON).
(external control) and the
(ON).
(external control) and the
10. C
AUTION FOR REFRIGERANT LEAKS
(Points to note in connection with refrigerant leaks.)
Introduction
The installer and system specialist shall secure safety against
leakage according to local regulations or standards. The
following standards may be applicable if local regulations are
not available.
The Urban Multi System, like other air conditioning systems, uses
R-410A as refrigerant. R-410A itself is an entirely safe non-toxic,
non-combustible refrigerant. Nevertheless care must be taken to
ensure that air conditioning facilities are installed in a room which is
sufficiently large. This assures that the maximum concentration level
of refrigerant gas is not exceeded, in the unlikely event of major leak
in the system and this in accordance to the local applicable
regulations and standards.
Maximum concentration level
The maximum charge of refrigerant and the calculation of the
maximum concentration of refrigerant is directly related to the
humanly occupied space in to which it could leak.
The unit of measurement of the concentration is kg/m
3
kg of the refrigerant gas in 1 m
Compliance to the local applicable regulations and standards for the
maximum allowable concentration level is required.
According to the appropriate European Standard, the maximum
allowed concentration level of refrigerant to a humanly space for
3
R-410A is limited to 0.44 kg/m
1 direction of the refrigerant flow
2 room where refrigerant leak has occurred (outflow of all the refrigerant
from the system)
Pay special attention to places, such as a basements, etc. where
refrigerant can stay, since refrigerant is heavier than air.
Procedure for checking maximum concentration
Check the maximum concentration level in accordance with steps 1
to 4 below and take whatever action is necessary to comply.
1 Calculate the amount of refrigerant (kg) charged to each system
separately.
+
amount of additional charging
refrigerant in a amount (amount of
single unit system refrigerant added
(amount of locally in
refrigerant with accordance with the
which the system is length or diameter of
charged before the refrigerant
leaving the factory) piping)
Where a single refrigerant facility is divided into
NOTE
2 entirely independent refrigerant systems, use the
amount of refrigerant with which each separate system
is charged.
3
(the weight in
volume of the occupied space).
.
1
2
=
total amount of
refrigerant (kg) in
the system
Installation manual
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