Daikin RXYQ96PATJ [75/108] Onsite settings
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Daikin RXYQ96PATJ [75/108] Onsite settings

Daikin RXYQ96PATJ [75/108] Onsite settings
Installation EDUS391000-N_a
74 Installation of Outdoor Units
12. ONSITE SETTINGS
NOTE
In the case of a multi system, all onsite settings should be made on
the master unit. Settings made on sub units are invalid.
The outside unit to which the indoor unit transmission wire are
connected is the master unit, and all other units are sub units.
Use the push button switches (BS1 through BS5) on the outside unit
PC-board (A1P) to make the necessary onsite settings.
See the “Service Precautions” label (upper) on the electrical
components box lid for details on the positions and operating method
of the push button switches and on the onsite setting.
Make sure to record the setting on the accessory “REQUEST FOR
THE INDICATION” label.
Use an insulated rod to operate the push buttons via the inspection
door of electrical components box lid.
There is a risk of electric shock if you touch any live parts, since this
operation must be performed with the power on.
13. TEST RUN
13-1 Before test run
• Make sure the following works are completed in accordance with
the installation manual.
Piping work
Wiring work
Air tight test
Vacuum drying
Additional refrigerant charge
Check operation
• Check that all work for the Branch Selector and indoor unit are
finished and there are no danger to operate.
13-2 Test Run
After all works are completed, operate the unit normally and check the
following.
(1) Make sure the indoor and outside units are operating normally.
(2) Operate each indoor unit one by one and make sure the corre-
sponding outside unit is also operating.
(3) Check to see if cold (or hot) air is coming out from the indoor unit.
(4) Push the fan direction and strength buttons on the remote control-
ler to see if they operate properly.
NOTE
• Heating is not possible if the outdoor temperature is 75°F or
higher. Refer to the Operation manual.
• If a knocking sound can be heard in the liquid compression of the
compressor, stop the unit immediately and then energize the crank
case heater for a sufficient length of time before restarting the oper-
ation.
• Once stopping, the compressor will not restart in about 5 minutes
even if the On/Off button of the remote controller is pushed.
• When the system operation is stopped by the remote controller, the
outside units may continue operating for further 5 minutes at maxi-
mum.
• The outside unit fan may rotate at low speeds if the Night-time low
noise setting or the External low noise level setting is made, but
this is not a malfunction.
• If the check operation was not performed at first istallation, the mal-
function code “U3” will be displayed in the remote controller. Perform
the check operation following “11-2-2 Procedure of Check Opera-
tion©.
13-3 Checks After Test Run
Perform the following checks after the test run is com-
plete.Record the contents of field setting.
→ Record them on the accessory “REQUEST FOR THE INDICA-
TION” label.
And attach the label on the back side of the front panel.
• Record the installation date.
→ Record the installation date on the accessory “REQUEST FOR
THE INDICATION” label in accordance with the IEC60335-2-
40.
And attach the label on the back side of the front panel.
NOTE
After the test run, when handing the unit over to the customer, make
sure the electrical components box lid, the inspection door, and the
unit casing are all attached.
14. CAUTION 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 VRV System, like other air conditioning systems, uses R-410A
as refrigerant. R-410A 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 that 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 lb/ft
3
(the weight in lb
of the refrigerant gas in 1 ft
3
volume of the occupied space).
Compliance to the local applicable regulations and standards for the
maximum allowable concentration level is required.
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 the place, such as a basement,
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
1−2 below and take whatever action is necessary to comply.
1. Calculate the amount of refrigerant (lb) charged to each
system separately.
NOTE
• Where a single refrigerant facility is divided into 2 entirely
independent refrigerant systems then use the amount of
refrigerant with which each separate system is charged.
2. Follow local code requirements (ASHRAE-15 2007 &
ASHRAE-34 2007).
amount of
refrigerant in a
single unit system
(amount of
refrigerant with
which the system is
charged before
leaving the factory)
+
additional charging
amount (amount of
refrigerant added
locally in accordance
with the length or
diameter of the
refrigerant piping)
=
total amount
of refrigerant
(lb) in the
system

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