English
18
[How to Check How Many Units are Connected]
It is possible to find out how many indoor or outdoor (function) unit in the system are turned on by operating the push button on the PC-board
(A1P) of outdoor unit (In case of multi system master unit).
Follow the procedure below to check how many indoor or outdoor units are turned on.
(*5) The number include the function unit.
Note
Press the “MODE button” (BS1) if you get confused while operating.
This returns to
Setting Mode 1
(H1P : OFF, default).
9-2 Procedure of Additional Refrigerant charging
1.
Make sure the following works are complete in accordance with
the installation manual.
Piping work
Wiring work
Air tight test and Vacuum drying
Installation work for indoor unit
2.
Calculate the “additional charging amount” using “How to calcu-
late the additional refrigerant to be charged” in “
6-5 Example of
connection
”.
3.
Open the valve B (
See the figure 34
. The valve A,C and the shut-
off valves of outdoor unit must be left closed), and charge the
refrigerant of the “additional charging amount” from the liquid pipe
service port of function unit.
4.
Close valve B when the refrigerant is charged as much as possi-
ble.
(Refer to figure 34)
5.
Perform the automatic refrigerant charging operation according to
the [Automatic refirgerant charging operation procedure] and fill
the remaining quantity of refrigerant.
Go to step 6 if the additional quantity of refrigerant to be replen-
ished is known and no automatic charging operation is performed
or the contraction of working hours is required.
6.
If the additional quantity of refrigerant was not replenished in step
5 (automatic refrigerant charging operation), perform the addi-
tional refrigerant charging operation in service mode and replenish
the refrigerant through the refrigerant charging port.
Refer to the “Additional refrigerant charging method” described in
the [Service precautions] label (below) on the EL.COMPO.BOX lid
of the outdoor unit for the additional refrigerant charging operation
in service mode.
7.
After completing the additional refrigerant charging, record the
charging amount on the accessory “REQUEST FOR THE INDI-
CATON” label (Installation records) and adhere it to the back side
of the front panel. Also, record the factory charged refrigerant
amount, additional refrigerant amount in the field and total refrig-
erant amount of the system to “Refrigerant charge label” and
adhere in the proximity of the refrigerant charge port.
About “Refrigerant charge label”, refer to [Important information
regarding the refrigerant used] in “
1-2 Special notice of prod-
uct
”.
(Refer to figure 34)
1.
Measuring device
2.
R410A tank (with siphon)
3.
Charge hose
4.
Refrigerant charge port
5.
Liquid pipe shutoff valve
6.
Gas shutoff valve
7.
Equaliger pipe shutoff valve
8.
Outdoor unit A
9.
Outdoor unit B (for multi outdoor unit)
10.
Function unit
11.
Liquid pipe service port
12.
Gas pipe service port
13.
Valve A
14.
Valve C
15.
Valve B
16.
To indoor unit
17.
Local piping
18.
Flow of refrigerant
19.
Shutoff valve
20.
Service port
[Automatic refirgerant charging operation procedure]
Note
•
For performing the automatic refrigerant charging operation, the
push button on the PC-bord (A1) of outdoor unit are used. (See
figure 32.)
And the refrigerant are charged from the refrigerant charge port
via the valve A. (See figure 34.) For operating the push button and
opening or closeing the valves, follow the procedure.
•
During Automatic refrigerant charging operation, the system will
select charging mode (cooling mode or heating mode) by the tem-
perature condition as follows.
When cahrging in cooling mode, the system will stop operation
when the required amount of refrigerant is charged.
(LED display:
h
...OFF
i
...ON
j
...Blinking
∗
...Uncertain)
LED display
H1P
H2P
H3P
H4P
H5P
H6P
H7P
(1) Press the MODE button (BS1) once at
Setting Mode 1
(H1P : off), and set the MON-
ITOR MODE (H1P : Blinking).
j
h
h
h
h
h
h
(2) Press the SET button (BS2) the number of times until the
LED display matches that at right.
For checking the number
of outdoor units (*1) :
eight times
j
h
h
i
h
h
h
For checking the number
of indoor units : five times
j
h
h
h
i
h
i
(3) Press the RETURN button (BS3) and read the number of units from the display of
H2P through H7P.
[Reading Method]
The display of H2P through H7P should be read as a binary number, with
j
standing
for “1” and
h
standing for “0”.
j
∗
∗
∗
∗
∗
∗
j
h
j
h
j
j
h
(4) Press the MODE button (BS1) once. This returns to
Setting Mode 1
(H1P : OFF, default).
h
h
i
h
h
h
h
Ex: For the LED display at right, this would be “0 1 0 1 1 0 ”,
which would mean 22 units are connected.
Note: “000000” indicates 64 units.
32 ×
0
+ 16 ×
1
+ 8 ×
0
+ 4 ×
1
+ 2 ×
1
+ 1 ×
0
= 22 units
Outdoor temp. : 0˚C DB ~ 43˚C DB
Indoor temp. :
10˚C DB ~ 32˚C DB
Less than above range
Cooling mode
Heating mode
01_EN_3P201178-10P.fm Page 18 Wednesday, September 2, 2009 11:10 AM
