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Test Operation
SiUS34-801A_b
80
VRVIII R-410A Heat Pump 60Hz
[Shutoff valve operation procedure]
When operating the shutoff valve, use the following procedure.
Note:
Do not open the shutoff valve until
10.2.1 Check Work Prior to Turn Power Supply On
is
completed. If the shutoff valve is left open without turning on the power, it may cause refrigerant
to buildup in the compressor, leading to insulation degradation.
Be sure to use the correct tools.
The shutoff valve is not a back-seat type. If forced 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>
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 table <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 table <Tightening Torque>.
72P type
96P type
120P/144P type
Liquid pipe shutoff
valve
φ
3/8
The 120P type / RXYQ144PTJU corresponds to the
φ
1/2 - diameter onsite piping
using the accessory pipe.
(2)
Low side equalizer
pipe shutoff valve
φ
3/4
(3)
Gas shutoff valve
φ
1
The 72P type corresponds to the
φ
3/4 - diameter onsite piping using the accessory pipe.
The 96P type corresponds to the
φ
7/8 - diameter onsite piping using the accessory pipe.
The 120P/144P type corresponds to the
φ
1-1/8 - diameter onsite piping using the accessory pipe.
(4)
High side equalizer
pipe shutoff valve
φ
3/4
Service port
fig. 28
Cap
Hex holes
Shaft (valve body)
Seal section
Summary of Contents for VRV III
Page 15: ...SiUS34 801A_b xiv ...
Page 23: ...Model Selection SiUS34 801A_b 8 General Information ...
Page 133: ...Field Settings SiUS34 801A_b 118 VRVIII R 410A Heat Pump 60Hz ...
Page 254: ...SiUS34 801A_b Test Operation VRVIII R 410A Heat Recovery 60Hz 239 R 410A Label R 410A Label ...
Page 329: ...Field Setting SiUS34 801A_b 314 Indoor Unit ...
Page 340: ...SiUS34 801A_b Troubleshooting by Remote Controller Troubleshooting 325 ...
Page 490: ...SiUS34 801A_b Piping Diagrams Appendix 475 Heat Pump 230V RXYQ72 96 120PTJU 3D058636A ...
Page 491: ...Piping Diagrams SiUS34 801A_b 476 Appendix Heat Pump 230V RXYQ144PTJU 3D058640 ...
Page 492: ...SiUS34 801A_b Piping Diagrams Appendix 477 Heat Recovery 460V REYQ72 96 120PYDN 3D058639A ...
Page 493: ...Piping Diagrams SiUS34 801A_b 478 Appendix Heat Recovery 460V REMQ72PYDN 3D058637A ...
Page 494: ...SiUS34 801A_b Piping Diagrams Appendix 479 Heat Recovery 460V REMQ96 120PYDN 3D058638A ...
Page 495: ...Piping Diagrams SiUS34 801A_b 480 Appendix Heat Recovery 230V REYQ72 96 120PTJU 3D058639A ...
Page 496: ...SiUS34 801A_b Piping Diagrams Appendix 481 Heat Recovery 230V REYQ144PTJU 3D058640 ...
Page 497: ...Piping Diagrams SiUS34 801A_b 482 Appendix Heat Recovery 230V REMQ72PTJU 3D058637A ...
Page 498: ...SiUS34 801A_b Piping Diagrams Appendix 483 Heat Recovery 230V REMQ96 120PTJU 3D058638A ...
Page 501: ...Piping Diagrams SiUS34 801A_b 486 Appendix 1 3 BS Unit 4D057985A ...
Page 537: ...Piping Installation Point SiUS34 801A_b 522 Appendix ...
Page 543: ...Pressure Sensor SiUS34 801A_b 528 Appendix ...
Page 563: ...SiUS34 801A_b iv Index ...