Panasonic S-200PE2E5 Technical Data & Service Manual page 37

Precautions when operating the 3-way valve for piping installation
Do not open the 3-way valve until the piping installation is completed.
• It is closed during shipment.
• During installation the side panel may warp if only the fl are nut is loosened and tightened with a torque wrench. As a
result, always be sure to secure to the hexagonal part of the 3-way valve with a spanner, or other tool.
Refer to the following table for the tightening torque of the 3-way valve fl are nuts.
• If the nuts are over tightened, they may cause the fl ares to break or leak.
Do not add additional force to the valve's cover.
• Using spanners on the cover or valve itself (other than the hexagonal parts) may cause gas leakage.
Avoid using spanners on the cover or parts other than the hexagonal part of the valve.
Valve shaft
Valve cap
Flare nut
(Please use a single, open-end spanner to loosen and
tighten the liquid side 3-way valve fl are nut.)
During the cooling mode operation under low ambient pressure, the low
pressure side of the valve can be prone to freezing. Secure the fl are nut
(shared gas side / liquid side) section of the valve with a silicone sealing
agent to prevent this from occurring.
[3-way valve operation method]
Gas side
Opening: Open the valve cap, pull out the knob and use
pliers etc. to turn the knob 90° counter-clockwise.
Closing: Open the valve cap, pull out the knob and use
pliers etc. to turn the knob 90° clockwise.
Fully closed
Precautions for handling the valve cap
Ensure not to scratch the inner surface of the valve or the end of
the valve shaft.
• Once adjustments to the valve are completed, ensure to tighten
the valve cap according to the prescribed torque.
Precautions for handling the service ports
Use a push-rod with a charge hose.
• Once adjustments to the valve are completed, ensure to tighten the
valve cap according to the prescribed torque.
Precautions for connecting the pipes
Ensure that the pipes do not come into contact with the compressor's bolts
or exterior panel.
There is a risk of condensation from the 3-way valve coming out between the
insulation material and the indoor unit's piping when you install the outdoor
unit above then the indoor unit. Ensure to caulk the connection parts.
Service port
Torque
wrench
Liquid side
• Use an Allen wrench (Size 4 mm or 6 mm).
Direction to open
Fully open
Knob
Valve cap
Service port
Gas side
Liquid side
Opening: Open the valve cap and turn the Allen wrench
counter-clockwise until it stops.
Closing: Open the valve cap and turn the Allen wrench
clockwise until it stops.
Gas side
Liquid side
Tightening torque
11.0±1.0N•m
(110±10kgf•cm)
Insulation
material
1-31
Please do not apply the
spanner in this position.
Hexagonal part
of the valve
Torque wrench
Spanner (Secure)
Silicone sealing agent
(Ensure not to leave any holes)
Opening direction
Tightening torque N•m (kgf•m)
20~25 (200~250)
17±3 (170±30)
Piping
Caulking treatment, etc.
1