English
15
2.
Securely tighten the valve until the shaft contacts the main body seal.
3.
Make sure to tighten the cap securely.
(For the tightening torque, refer to the item <Tightening Torque>.)
<Tightening torque>
[How to Check How Many Units are Connected]
It is possible to find out how many indoor or outside unit in the system are turned on by operating the push button on the PC-board (A1P) of outside
unit (In case of multi system master unit).
Follow the procedure below to check how many indoor or outside units are turned on.
NOTE
Press the “MODE button” (BS1) if you get confused while operating.
This returns to
Setting Mode 1
(H1P : OFF, default).
11-2 Procedure of Adding Refrigerant charging and
check operation
WARNING
Electric Shock Warning
•
Make sure to close the EL. COMPO. BOX lid before turning on the
power.
•
Perform the setting on the PC-board (A1P) of the outside unit and
check the LED display after the power is on via the inspection door
which is in the EL. COMPO. BOX lid.
(Refer to figure 29)
1.
EL. COMPO. BOX
2.
Inspection door
3.
EL. COMPO. BOX lid
4.
LED (H1~8P)
5.
Push button(BS1~5)
6.
Lift the protruding part to open the inspection door.
•
Use an insulated rod to operate the push buttons via the EL.
COMPO. BOX’s inspection door.
There is a risk of electric shock if you touch any live parts, since this
operation must be performed with the power on.
CAUTION
•
Make sure to use the protect tool (protective groves and goggles)
when charging the refrigerant.
•
Due to a danger of liquid hammer, the refrigerant must not be charged
over the allowable maximum amount when charging the refrigerant.
•
Do not perform the refrigerant charging operation under working for
the BS and indoor unit.
•
When opening the front panel, make sure to take caution to the fan
rotation during the working.
After the outside unit stops operating, the fan may keep rotation for a
while.
NOTE
•
If operation is performed within 12 minutes after the BS, indoor and
outside units are turned on, H2P will be lit on and the compressor will
not operate.
Check the LED display indicate as shown below.
•
In order to ensure uniform refrigerant distribution, it may take up to
around 10 minutes for the compressor to start up after the unit start-
ing operating. This is not a malfunction.
•
The refrigerant charge port is connected to the piping inside the unit.
When the unit is shipped from the factory, the unit’s internal piping is
already charged with refrigerant, so be careful when connecting the
charge hose.
•
After adding the refrigerant, make sure to close the lid of the refrig-
erant charging port.
The tightening torque for the lid is 8.48 to 10.3 ft · lbf.
•
See [Shutoff valve operation procedure] in chapter 11-1 for details
on how to handle shutoff valves.
•
When done or when pausing the refrigerant charging operation, close
the valve of the refrigerant tank immediately.
Shutoff
valve size
Tightening torque ft · lbf (Turn clockwise to close)
Shaft (valve body)
Cap (valve lid) Service port
φ
3/8
3.98 - 4.87
Hexagonal
wrench 4mm
9.95 - 12.17
8.48 - 10.3
φ
1/2
5.97 - 7.30
13.3 - 16.2
φ
3/4
19.9 - 24.3
Hexagonal
wrench 8mm
16.6 - 20.3
φ
1
(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
outside units : 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
H1P H2P H3P H4P H5P H6P H7P
h
h
i
h
h
h
h
01_EN_3P215731-2.fm Page 15 Tuesday, December 4, 2007 12:04 PM
Summary of Contents for RXYQ120PYDN
Page 24: ...20 English NOTES...
