Daikin VRV III, Руководство по установке

Страница: 23 / 36

R REMQ10~16P8 + REMHQ12P8Y1B
VRVIII System air conditioner
4PW48463-1A
Installation manual
18
The filled out label must be adhered on the inside of the product and
in the proximity of the product charging port (e.g. on the inside of the
service cover).
(2)
In case of multiple outdoor systems, only 1 label must be adhered,
mentioning the total factory refrigerant charge of all outdoor units
connected on the refrigerant system.
11.2. Precautions when adding R410A
Be sure to charge the specified amount of refrigerant in liquid state to
the liquid pipe.
Since this refrigerant is a mixed refrigerant, adding it in gas form may
cause the refrigerant composition to change, preventing normal
operation.
■
Before charging, check whether the refrigerant cylinder is
equipped with a siphon tube or not.
■
Be sure to use tools exclusively for R410A to ensure required
pressure resistance and to prevent foreign materials from mixing
into the system.
11.3. Stop valve operation procedure
Size of stop valve
The sizes of the stop valves connected to the system are as listed in
the table below.
Opening stop valve (See figure 13)
1. Remove the cap and turn the valve counterclockwise with the
hexagon wrench.
2. Turn it until the shaft stops.
3. Make sure to tighten the cap securely. Refer to the table below
Closing stop valve (See figure 13)
1. Remove the cap and turn the valve 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 table above.
11.4. How to check how many units are connected
It is possible to find out how many indoor units are active and
connected by operating the push-button switch on the printed circuit
board (A1P) of the working outdoor unit. In a multiple outdoor unit
system, you can find out how many outdoor units are connected to
the system by using the same procedure.
Make sure that all the indoor units connected to the outdoor unit are
active.
Follow the 5-step procedure as explained below.
■
The LEDs on the A1P shows the operating status of the outdoor
unit and the number of indoor units that are active.
■
The number of units that are active can be read from the LED
display in the "Monitor Mode" procedure below.
NOTE National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide
the appropriate official national language on the unit.
Therefore, an additional multilingual fluorinated
greenhouse gases label is supplied with the unit.
Sticking instructions are illustrated on the backside of
that label.
Charge the liquid
refrigerant with the
cylinder in upright
position. Charge the liquid
refrigerant with the
cylinder in up-side-down
position.
Charging with an unsuitable substance may cause
explosions and accidents, so always make sure that the
appropriate refrigerant (R410A) is charged.
Refrigerant containers must be opened slowly.
Type of stop valve 8 Hp 10 Hp 12 Hp 14 Hp 16 Hp
Liquid pipe Ø9.5
(a)
(a) The 12 Hp model supports field piping of Ø12.7 on the accessory pipe supplied
with the unit.
Ø12.7
Suction gas pipe Ø25.4
(b)
(b) The 8 and 10 Hp models support field piping of Ø22.2 on the accessory pipe
supplied with the unit.
The 12~16 Hp models support field piping of Ø28.6 on the accessory pipe
supplied with the unit.
HP/LP gas pipe Ø19.1
(c)
(c) The 14 and 16 Hp models support field piping of Ø22.2 on the accessory pipe
supplied with the unit.
Equalizer pipe Ø19.1
3
5 6
2
1
4
1 factory refrigerant charge
of the product:
see unit name plate
(2)
2 additional refrigerant
amount charged in the
field
3 total refrigerant charge
4 contains fluorinated
greenhouse gases
covered by the Kyoto
Protocol
5 outdoor unit
6 refrigerant cylinder and
manifold for charging
■
Do not open the stop valve until all piping and
electrical steps of
"10. Checking of unit and
installation conditions" on page 17 are completed. If
the stop valve is left open without turning on the
power, it may cause refrigerant to build up in the
compressor, leading to insulation degradation.
■
Always use a charge hose for service port connection.
■
After tightening the cap, check that no refrigerant
leaks are present.
1 Service port
2 Cap
3 Hexagon hole
4 Shaft
5 Seal
Do not apply excessive force to the stop valve. Doing
so may break the valve body.
Stop valve size
Tightening torque N•m (Turn clockwise to close)
Shaft
Cap (valve lid) Service port Valve body
Hexagonal
wrench
Ø9.5 5.4~6.6
4 mm
13.5~16.5
11.5~13.9
Ø12.7 8.1~9.9 18.0~22.0
Ø22.2
27.0~33.0 8 mm 22.5~27.5
Ø25.4
x
OFF
w
ON
c
Blinking