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15

English

2.

After the vacuum drying is finished, charge the additional refrigerant 
in its liquid state through the liquid stop valve service port. Taking 
into account following instructions:

Check that gas and liquid stop valves are closed.

Stop the compressor and charge the specified weight of refriger-
ant.

(If the outside unit is not in operation and the total amount cannot be 
charged, follow the Additional refrigerant charge procedure (2) 
shown below.)

NOTE

Procedures for charging additional refrigerant.

(Refer to figure 24)

1.

Pressure reducing valve

2.

Nitrogen

3.

Refrigerant tank

4.

With a siphon

5.

Measuring instrument

6.

Vacuum pump

7.

Valve A

8.

Valve B

9.

Charge hose

10.

Outside unit

11.

Gas side

12.

Liquid side

13.

Discharge gas side

14.

Suction gas side

15.

Stop valve service port

16.

To indoor unit

17.

To indoor units / BS units

18.

Dotted lines represent onsite piping

Additional refrigerant charge procedure (2)-by Additional refriger-
ant charge operation

To learn the system settings for additional refrigerant charging, refer to 
the [Service Precaution] label attached on the back of the electric box lid 
in the outside unit.

1.

Fully open all stop valves (valve A and valve B must be left
fully closed).

2.

After ten minutes, fully close liquid line stop valve and then, open 
the valve by turning 180°.
Start the additional refrigerant charge operation.
See [Service precautions] Label for detail.
If it is difficult to charge the refrigerant additionally, decrease the 
water temperature or warm the refrigerant tank.
(Warm the refrigerant tank with a stupe or a warm hot water of 
104 °F or less.)

3.

After the system is charged with a specified amount of refrigerant, 
press the RETURN button (BS3) on the PC board (A1P) in the out-
side unit to stop the additional refrigerant charge operation.

4.

Immediately open both liquid-side and gas-side stop valve.
(If do not open the stop valve immediately, liquid seal may cause 
the pipe to burst.)

NOTE

If the refrigerant cylinder is siphonal, set it upright while charging 
additional refrigerant.

9-10 Stop valve operation procedure

CAUTION

Do not open the stop valve until 1-6 of “9-8 Checking of device and 
installation conditions” are completed. If the stop valve is left open 
without turning on power, it may cause refrigerant to buildup in the 
compressor, leading to insulation degradation.

Opening stop valve

1.

Remove the cap and turn the valve counterclockwise with the hexa-
gon 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 on the below.

Tightening torque

(Refer to figure 25)

 

1.

Service port

2.

Cap

3.

Hexagon hole

4.

Shaft

5.

The main body seal

Caution

• Do not damage the cap sealing.
• Always use a charge hose for service port connection.
• After tightening the cap, check that no refrigerant leaks are present.
• After working, securely tighten the cover of service port without fail 

by specified torque.

• When loosening a flare nut, always use two wrenches in combina-

tion. When connecting the piping, always use a spanner and torque 
wrench in combination to tighten the flare nut.

• When connecting a flare nut, coat the flare (inner and outer faces) 

with ether oil or ester oil and hand-tighten the nut 3 to 4 turns as the 
initial tightening.

• Do not forget to open the stop valve before starting operation.

 

(Refer to figure 26)

1.

Remove the cap and turn the valve counterclockwise with 
the hexagon wrenches until it stops.

2.

Discharge gas side

3.

Liquid side

4.

Suction gas side

5.

Never remove the partition flange for any reason.

6.

Full close on the suction gas side

Stop 

valve size

Tightening torque ft.-lbf. (Turn clockwise to close)

Shaft

(valve body)

Cap 

(valve lid)

Service port Flare nut

Gas side 

accessory 

pipe (1)

Liquid 

side

3.98-4.87

Hexagonal 

wrench 1/8 in.

9.95-12.17

8.48-10.25

24.1-29.4

_

Gas 
side

19.91-24.33

Hexagonal 

wrench 3/8 in.

26.54-32.44

8.48-10.25

_

16.22-20.65

Содержание RWEYQ144PTJU

Страница 1: ...for future reference This manual should be left with the equipment owner Lire soigneusement ces instructions avant I installation Concerver ce manuel port e de main pour r f rence ult rieure Ce manuel...

Страница 2: ...6 13 16 3 15 16 9 13 16 21 5 8 30 11 16 9 9 8 10 8 9 7 7 6 6 6 9 7 8 5 8 15 3 8 4 3 1 2 11 13 16 39 3 8 35 7 16 19 11 16 1 2 3 4 4 10 5 6 5 4 9 6 7 7 10 8 1 2 3 4 9 Heat recovery system Heat pump syst...

Страница 3: ...figure 13 figure 12 figure 11 A B C A B C F1 F1 F2 F2 Q1 Q2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 4 5 6 1 2 7 C H SELECTOR TO IN D UNIT TO OUT D UNIT TO MULTI UNIT 3 A B C F1 F1 F2 F2...

Страница 4: ...very system 1 2 3 4 5 6 7 8 9 10 11 5 4 12 14 15 16 17 13 figure 16 A B C A B C 1 DS1 1 2 3 4 OFF ON O U T I N TO IN D UNIT F1 F2 A1P A1P DS1 1 2 3 4 OFF ON O U T I N F1 F2 P1 P2 P1 P2 1 1 2 6 3 3 4 5...

Страница 5: ...4 5 6 Heat pump system Heat recovery system 4 5 3 2 1 figure 24 1 11 1 2 2 4 3 4 3 5 5 R410A R410A 9 7 7 8 13 9 6 6 16 10 10 10 10 17 12 12 14 15 15 18 18 Heat pump system Heat recovery system 1 2 3...

Страница 6: ...sult in equipment or property damage accidents only DANGER Refrigerant gas is heavier than air and replaces oxygen A massive leak can lead to oxygen depletion especially in base ments and an asphyxiat...

Страница 7: ...on tribute to the greenhouse effect if it is released Therefore take proper measures to check for the tightness of the refrig erant piping installation Read the chapter Refrigerant Pip ing and follow...

Страница 8: ...itches off automatically in order to protect the unit from freezing Hold ambient temperature at 35 95 F Heat release from the unit 0 64 kW hour Model 72 84 It is therefore recommended to always ventil...

Страница 9: ...emale Thread 1 2FPS 2 female Thread General RWEYQ216PTJU RWEYQ252PTJU Nominal cooling capacity 2 MBh 216 252 Nominal cooling capacity 3 MBh 243 283 5 Nominal input cooling heating 4 kW 12 60 12 00 16...

Страница 10: ...ower without fail Open type tower cannot be used 4 Strainer Install the strainer accessory without fail at the inlet of water pip ing If sands wastes rust particles etc are mixed in the water cir cula...

Страница 11: ...manner 7 1 When designing the equipment 1 Install the strainer accessory at the water inlet side adjacent to the outside unit in order to prevent any foreign materials such as dust sand etc from ente...

Страница 12: ...within the standard 2 Clean the strainer 3 Make sure that the flow rate is correct 4 Make sure that the operational conditions pressure flow rate outlet temperature etc are normal 2 Because the plate...

Страница 13: ...fect but also may cause the capacitor to overheat due to high frequency waves Therefore never install a phase advancing capacitor Keep power imbalance within 2 of the supply rating 1 Large imbalance w...

Страница 14: ...electromagnetic switch for the water pump to each outside unit Select without fail an auxiliary a contact able to switch min imum load of DC15V 1mA When connecting for each outside unit Connect to the...

Страница 15: ...erminals for connections to the power terminal block When none is available follow the instructions below Do not connect wiring of different thicknesses to the power termi nal block Slack in the power...

Страница 16: ...s always required When installing the piping follow the instructions in the installation manual that comes with the kit Restriction for the installation of the outside unit multi connection piping kit...

Страница 17: ...cal piping with the provided insulation to prevent it from coming into contact with the casing Precautions for installation of units NOTE The outside unit multi connection piping kit that is sold sepa...

Страница 18: ...c d e f r s t g h j k l m n o p i 23 3 lbs Total length ft of liquid piping size at 7 8 0 235 lbs ft Total length ft of liquid piping size at 3 8 Total length ft of liquid piping size at 1 4 Total len...

Страница 19: ...etc this must be prevented by caulking the connections etc WARNING Be sure to insulate connection piping as touching them can cause burns 9 8 Checking of device and installation conditions Be sure to...

Страница 20: ...refrigerant 9 10 Stop valve operation procedure CAUTION Do not open the stop valve until 1 6 of 9 8 Checking of device and installation conditions are completed If the stop valve is left open without...

Страница 21: ...onfiguration on the main unit Any settings made on a sub unit will be ignored After this close the electrical compo nents box lid Always perform configuration after turning ON the power To learn the s...

Страница 22: ...rding to local regulations or standards The following standards may be applicable if local regulations are not available The VRV System like other air conditioning systems uses R410A as refrigerant R4...

Страница 23: ...e open ings above and below the door which are each equivalent in size to 0 15 or more of the floor area 3 Calculating the refrigerant density using the results of the calcula tions in steps 1 and 2 a...

Страница 24: ...1645 Wallace Drive Suite 110 Carrollton TX 75006 info daikinac com www daikinac com 3P153897 12P EM09A022 0910 FS...

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