Daikin VRV III REMQ72PBYD, Инженерные данные, Страница: 61 / 130

Installation EDUS391004-N
60 Installation of Outdoor Units
[Shutoff valve operation procedure]
When operating the shutoff valve, follow the procedure instructed
below.
NOTE
• Do not open the shutoff valve until “10. CHECKING OF DEVICE
AND INSTALLATION CONDITIONS” is completed. If the shutoff
valve is left open without turning on the power, it may cause
refrigerant to buildup in the compressor, leading insulation
degradation.
• Be sure to use the correct tools.
The shutoff valve is not a back-seat type. If forced it to open, it
might break the valve body.
• When using a service port, use the charge hose.
• After tightening the cap, make sure no refrigerant gas is leaking.
Tightening torque
The sizes of the shutoff valves on each model and the tightening
torque for each size are listed in the table below.
<Size of Shutoff Valve>
(Refer to figure 28)
1. Service port
2. Cap
3. Hex holes
4. Shaft (valve body)
5. Seal section
To open
1.
Remove the cap and turn the shaft counterclockwise with the
hexagon wrench.
2.
Turn it until the shaft stops.
3.
Make sure to tighten the cap securely.
(For the tightening torque, refer to the item <Tightening Torque>.)
To close
1.
Remove the cap and turn the shaft clockwise with the hexagon
wrench.
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 outdoor 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.
NOTE
Press the “MODE button” (BS1) if you get confused while operating.
This returns to
Setting Mode 1 (H1P : OFF, default).
72P type 96P type
120P type /
RXYQ144PBTJ
Liquid pipe
shutoff valve

3/8
The 120P type / RXYQ144PBTJ corresponds to the

1/2 - diameter onsite piping using the accessory pipe.
Gas shutoff
valve

3/4
The 72P type corresponds to the

3/4 - diameter onsite
piping using the accessory pipe.
The 96P type corresponds to the

7/8 - diameter onsite
piping using the accessory pipe.
The 120P type / RXYQ144PBTJ corresponds to the

1-1/8 - diameter onsite piping using the accessory pipe.
Shutoff
valve size
Tightening torque ft · lbf (Turn clockwise to close)
Shaft (valve body) Cap (valve lid) Service port

3/8 3.98 - 4.87
Hexagonal
wrench 4mm
9.95 - 12.17
8.48 - 10.3

1/2 5.97 - 7.30 13.3 - 16.2

3/4
19.9 - 24.3
Hexagonal
wrench 8mm
16.6 - 20.3

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
outdoor 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
3P215731-10R