Checking Of Unit And Installation Conditions; Stop Valve Operation Procedure; Additional Refrigerant Charge - Daikin RZQ200C7Y1B Installation Manual

■
If there is a possibility that condensation on the stop valve might
drip down to the indoor side through gaps in the insulation and
piping because the outdoor unit is located higher than the indoor
unit this must be prevented by sealing up the connections. See
figure 20.
1 Liquid line stop valve
2 Gas line stop valve
3 Indoor -outdoor interconnection piping
4 Sealing up treatment
5 Heat insulator
Be sure to insulate local pipes, as touching them can
cause burns.

7.10. Checking of unit and installation conditions

Be sure to check the following:
1 Make sure there is no faulty power wiring or loosing of a nut. See
"8. Field wiring" on page 11.
2 Make sure there is no faulty transmission wiring or loosing of a
nut. See "8. Field wiring" on page
3 Make sure there is no faulty refrigerant piping. See
"7. Refrigerant piping" on page
4 Make sure piping size is correct. See
material" on page 4.
5 Make sure insulation work is done. See
page 7.
6 Make sure insulation resistance of main power circuit is not
deteriorated.
Using a megatester for 500 V, check that the insulation
resistance of 2 MΩ or more is attained by applying a voltage of
500 V DC between power terminals and earth. Never use the
megatester for the transmission wiring (between outdoor and
indoor unit, outdoor and COOL/HEAT selector, etc.).

7.11. Stop valve operation procedure

Do not open the stop valve until the steps
"7.10. Checking of unit and installation conditions" on
page 8 are completed. If the stop valve is left open without
turning on the power, it may cause refrigerant to buildup in
the compressor, leading to insulation degradation.
Introduction
Confirm the sizes of the stop valves connected to the system
referring to the table below.
Model Liquid line stop valve
RZQ200
RZQ250 Ø9.5➞12.7 (with reducer)
Opening stop valve
1. Remove the cap and turn the valve counterclockwise with the
hexagon wrench.
2. Turn it until the shaft stops.
Do not apply excessive force to the stop valve. Doing so may
break the valve body, as the valve is not a backseat type. Always
use the special tool.
3. Make sure to tighten the cap securely.
Closing stop valve
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 below.
Installation manual
8
11.
4.
"7.1. Selection of piping
"7.9. Pipe insulation" on
Gas line stop valve
Ø9.5 Ø22.2
Ø22.2
stop
valve
size Shaft (valve body)
Ø9.5 5.4~6.6
Ø12.7 8.1~9.9
Ø15.9 13.5~16.5
Ø22.2
27~33
Ø25.4
(See figure 18)
1 Service port
2 Cap
3 Hexagon hole
4 Shaft
5 Seal
CAUTION
■
Always use a charge hose for service port connection.
■
After tightening the cap, check that no refrigerant leaks are
present.

7.12. Additional refrigerant charge

Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type:
(1)
GWP value:
(1)
GWP = global warming potential
Please fill in with indelible ink,
■ ➀ the factory refrigerant charge of the product,
1~6 of
■ ➁ the additional refrigerant amount charged in the field and
■ ➀+➁ the total refrigerant charge
on the fluorinated greenhouse gases label supplied with the product.
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).
6 5
NOTE National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide
the appropriate official national language on the unit.
Therefore,
greenhouse gases label is supplied with the unit.
Sticking instructions are illustrated on the backside of
that label.
Tightening torque (N•m) (Turn clockwise to close)
Cap Service
(valve lid) port
Hexagonal 13.5~16.5
wrench
18~22
4 mm
Hexagonal
wrench 23~27 11.5~13.9
6 mm
Hexagonal
wrench 36~44
10 mm
R410A
1975
1
4
1
2
2
3
3 4
5
6
an additional multilingual
Gas line
piping
attached
Flare nut to unit
33~40
50~60
—
62~75
— 22~28
factory refrigerant charge
of the product:
see unit name plate
additional refrigerant
amount charged in the
field
total refrigerant charge
Contains fluorinated
greenhouse gases
covered by the Kyoto
Protocol
outdoor unit
refrigerant cylinder and
manifold for charging
fluorinated
RZQ200+250C7Y1B
Split system air conditioner
4PW34720-1G – 07.2010