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RZQG71~140L + RZQSG100~Y1B(9)

Split system air conditioners

4P327537-1 – 2012.08

Installation manual

10

When loosening a flare nut, always use two wrenches together. 

 

When connecting the piping, always use a spanner and torque 
wrench together to tighten the flare nut to prevent flare nut 
cracking and leaks.

1

Torque wrench

2

Spanner

3

Piping union

4

Flare nut

Not recommended, but in case of emergency

Should you be forced to connect the piping without a torque 
wrench, follow the following installation method:

Tighten the flare nut using a spanner until the tightening 
torque suddenly increases.

From that position further tighten the flare nut to the angle 
listed below:

9.2.

Brazing guidelines

Make sure to blow through with nitrogen when brazing. 

 

Blowing through with nitrogen prevents the creation of large 
quantities of oxidized film on the inside of the piping. An oxidized 
film adversely affects valves and compressors in the 
refrigerating system and prevents proper operation.

The nitrogen pressure should be set to 0.02 MPa (i.e., just 
enough so it can be felt on the skin) with a pressure-reducing 
valve.

1

Refrigerant piping

2

Part to be brazed

3

Taping

4

Manual valve

5

Pressure-reducing valve

6

Nitrogen

Do not use anti-oxidants when brazing the pipe joints.

 

Residue can clog pipes and break equipment.

Do not use flux when brazing copper-to-copper refrigerant 
piping. Use phosphor copper brazing filler alloy (BCuP) which 
does not require flux.

Flux has an extremely harmful influence on refrigerant piping 
systems. For instance, if chlorine based flux is used, it will cause 
pipe corrosion or, in particular, if the flux contains fluorine, it will 
deteriorate the refrigerant oil.

9.3.

Stop valve operation

Cautions on handling the stop valve

Make sure to keep both stop valves open during operation.

The figure below shows the name of each part required in 
handling the stop valve.

The stop valve is factory closed.

Do not apply excessive force to the valve stem. Doing so may 
break the valve body.

Since the stop valve attachment plate may be deformed if only a 
torque wrench is used to loosen or tighten the flare nut, always 
make sure to secure the stop valve with a spanner, then loosen 
or tighten the flare nut with a torque wrench.

 

Do not place the spanner on the stem cap, as this could cause a 
refrigerant leak.

When it is expected that the operating pressure will be low (for 
example, when cooling will be performed while the outside air 
temperature is low), sufficiently seal the flare nut in the stop 
valve on the gas line with silicon sealant to prevent freezing.

Opening/closing the stop valve

Opening the stop valve
1.

Remove the valve cover.

2.

Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) into 
the valve stem and turn the valve stem counterclockwise.

3.

When the valve stem cannot be turned any further, stop turning. 
The valve is now open.

Closing the stop valve
1.

Remove the valve cover.

2.

Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) into 
the valve stem and turn the valve stem clockwise.

3.

When the valve stem cannot be turned any further, stop turning. 
The valve is now closed.

Piping size

(mm)

Further tightening angle

(degrees)

Recommended arm length 

of spanner (mm)

Ø6.4

60~90

150

Ø9.5

200

Ø12.7

30~60

250

Ø15.9

300

Ø19.1

20~35

450

1

2

4

3

1

5

4

3

2

6

6

Silicon sealant

 

(Make sure there is no gap)

Closing direction

Liquid side

Gas side

1

2

3
4

1

Service port and service port cap

2

Valve stem

3

Field piping connection

4

Stem cap

1

2

1

Spanner

2

Torque wrench

Summary of Contents for SkyAir RZQG71L7V1B

Page 1: ...RZQG71L7V1B RZQG100L7V1B RZQG125L7V1B RZQG140L7V1B RZQG71L7Y1B9 RZQG100L7Y1B RZQG125L7Y1B RZQG140L7Y1B RZQSG100L7V1B RZQSG125L7V1B RZQSG140L7V1B RZQSG100L7Y1B9 RZQSG125L7Y1B9 RZQSG140L7Y1B Split syst...

Page 2: ...A B 1 2 4 5 H1 L3 L2 L3 L4 L2 L3 L3 L4 L5 L6 A C E B D H 1 2 3 1 50 Hz 220 240 V 3N 50 Hz 380 415 V V1 type Y1 type 1 2 4 5 A 1 A 2 100 100 100 100 1 1 2 H1 H1 H1 H2 H2 H2 L1 L1 L1 L1 L2 7 R410A R410...

Page 3: ...com o Certificado C 09 A B C 10 Bem rk som anf rt i A og positivt vurderet af B i henhold til Certifikat C 11 Information enligt A och godk nts av B enligt Certifikatet C 12 Merk som det fremkommer i...

Page 4: ...run 18 15 4 Precautions regarding test runs 19 15 5 Failure diagnosis at the moment of first installation 19 16 Wiring diagram 20 Thank you for purchasing this product The original instructions are w...

Page 5: ...at can withstand its weight Insufficient strength may result in the fall of equipment and causing injury Carry out the specified installation work in consideration of strong winds typhoons or earthqua...

Page 6: ...it is advised to foresee a delay of 10 minutes for signalling the alarm in case the alarm temperature is exceeded The unit may stop for several minutes during normal operation for defrosting the unit...

Page 7: ...bother next door neighbours Safe places which can withstand the unit s weight and vibration and where the unit can be installed level Places where there is no possibility of flammable gas or product...

Page 8: ...e outdoor unit In heavy snowfall areas it is very important to select an installation site where the snow will not affect the unit and set the outlet side at a right angle to the direction of the wind...

Page 9: ...outlet space position the units with consideration to the space required for the onsite refrigerant piping work as well Consult your dealer if the work conditions do not match those in the drawings 7...

Page 10: ...llation shall comply with applicable legislation In Europe the EN378 is the application standard that shall be used NOTICE To persons in charge of piping work Be sure to open the stop valve after pipi...

Page 11: ...ze Model 71 100 125 140 Maximum total one way piping length a a Parenthesized figure represents the equivalent length Pair L1 size down 10 m 10 m standard 50 m 70 m 75 m 90 m size up 25 m 35 m 35 m 45...

Page 12: ...ecause using existing piping with deteriorated oil will cause compressor breakdown Put some residual oil of the pipes you want to reuse on a piece of white paper or on the white surface of an oil chec...

Page 13: ...ine it will deteriorate the refrigerant oil 9 3 Stop valve operation Cautions on handling the stop valve Make sure to keep both stop valves open during operation The figure below shows the name of eac...

Page 14: ...to the edge and the surrounding end surfaces to prevent rusting When passing electrical wiring through the knock out holes remove any burrs from the knock out holes and wrap the wiring with protective...

Page 15: ...leaks Use a 2 stage vacuum pump with a non return valve which can evacuate to a gauge pressure of 100 7 kPa 5 Torr absolute 755 mm Hg Connect the vacuum pump to both the service port of the gas stop...

Page 16: ...the leak test and vacuum drying see 11 Leak test and vacuum drying on page 12 This unit requires additional charging of refrigerant according to the length of refrigerant piping connected at the site...

Page 17: ...kg b G2 12 m 6 4 R2 0 6 kg 3 Refrigerant charge amount R R1 R2 0 5 0 6 1 1 kg Example 2 1 G1 L1 5 m G2 L2 L3 L4 17 17 20 54 2 Over 30 m a G1 5 m R1 0 0kg b G1 G2 30 5 54 30 29 6 4 R2 0 9 kg 3 Refrige...

Page 18: ...nding on mode type RZQG71 RZQSG100 125 RZQG100 140 RZQSG140 Model Liquid piping Refrigerant piping length 5 10 m a b a For RZQG units only 3 10 m b For RZQG units only When piping length is less than...

Page 19: ...t wiring Secure the earth wire to the stop valve attachment plate so that it does not slide Secure the earth wire to the stop valve attachment plate one more time along with the electric wiring and th...

Page 20: ...esponsibility of the installer or user of the equipment to ensure by consultation with the distribution network operator if necessary that the equipment is connected only to a supply with a short circ...

Page 21: ...the wiring as mentioned on the wiring diagram Make sure no wiring has been forgotten and that there are no missing phases or reverse phases Is the unit properly grounded Is the wiring between units co...

Page 22: ...tector of this product only works during the initialisation stage after a power reset The reversed phase protection detector is designed to stop the product in case of an abnormality when the product...

Page 23: ...or heat exchanger middle R6T Thermistor liquid R10T Thermistor fin RC V1B Signal receiver circuit S1PH High pressure switch TC V1B Signal transmission circuit V1R IGBT power module V1T V1B Insulated g...

Page 24: ...4P327537 1 2012 08 Copyright 2012 Daikin...

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