LRYEQ16A7Y1
CONVENI-PACK
4P448939-1A – 2016.07
Installation manual
10
• Do not open the shutoff valve until the steps specified in
"9-3 Checking of Device and Installation Conditions" is com-
pleted.
Do not leave the shutoff valve opened without turning the power on,
otherwise refrigerant may be condensed in the compressor and the
insulation of the main power supply circuit may be degraded.
• Be sure to use an exclusive tool to handle the shutoff valve. The
shutoff valve is not of back sheet type. Excessive force imposed
may break the valve.
• Use a charge hose when using the service port.
• Make sure that there is no refrigerant gas leakage after the valve
cover and cap are securely tightened.
• When the valve caps have to be removed, be sure to use 2 span-
ners.
Tightening torque
Check with the following table the sizes of shutoff valves incorporated
by each model and the tightening torque values of the respective shut-
off valves.
Shutoff valve sizes
Opening method
1. Remove the valve cover and turn the shaft anticlockwise with a
hexagon wrench.
2. Turn the shaft until the shaft stops.
To fully open the Ø25.4 mm stop valve, turn the shaft until a torque
between 27 and 33 N•m is achieved. Inadequate torque may cause
leakage of refrigerant and breakage of the stop valve cap.
3. Tighten the valve cover securely. Refer to the above table for the
tightening torque according to the size.
Pay attention that the mentioned torque range is applicable for
Ø25.4 mm stop valve only.
Closing method
1. Remove the valve cover and turn the shaft clockwise with a hexa-
gon wrench.
2. Tighten the shaft until the shaft comes in contact with the sealing
part of the valve.
3. Tighten the valve cover securely. Refer to the above table for the
tightening torque according to the size.
Handling Precautions for Valve Cover
• Be careful not to damage the sealing part.
• At the time of mounting the valve cover, apply a screw lock agent to
the screw thread.
• Do not apply a screw lock agent (for flare nut use) to the sealing
part.
• Be sure to tighten the valve cover securely after operating the
valve. Refer to "Operation Method of Shutoff Valves" for the
tightening torque of the valve.
Handling Precautions for Service Port
• Work on the service port with a charge hose provided with a push-
ing rod.
• At the time of mounting the cap, apply a screw lock agent to the
screw thread.
• Do not apply a screw lock agent (for flare nut use) to the sealing
part.
• Be sure to tighten the cap securely after the work. Refer to "Oper-
ation Method of Shutoff Valves" for the tightening torque of the
cap.
Apply a screw lock agent to the valve cover mount and the screw
thread of the service port.
Otherwise, dew condensation water will intrude inside and freeze.
Therefore, refrigerant gas leakage or a compressor malfunction may
result from the cap deformation or damage.
3. Connecting refrigerant piping to outdoor units
If connected to the front
Remove the shutoff valve cover to connect.
Liquid side shutoff valve φ9.5
Gas side shutoff valve φ25.4
Shutoff
valve sizes
Tightening torque N•m (closes clockwise)
Shaft (valve body) Valve cover Service port
Ø9.5 5.4~6.5
Hexagon
wrench: 4 mm
13.5~16.5
11.5~13.9
Ø25.4 27.0~33.0
Hexagon
wrench: 8 mm
22.5~27.5
Service port
Valve cover
Hexagon hole
Shaft
Sealing part
Screw thread
Apply a screw lock agent
Sealing part
Not apply a screw lock agent
Shutoff valve
Part of mounting the
valve cover.
Valve cover
Sealing part
Not apply a screw
lock agent
Screw thread
Apply a screw lock
agent
Cap
[2] Gas side shutoff valve
(Air-conditioner)
Liquid side accessory pipe (2)
Gas side accessory pipe (2)
Brazing
[3]
Gas side shutoff valve
(Refrigerator)
[4]
Liquid side shutoff valve
(Refrigerator)
Liquid side accessory pipe (1)
Gas side accessory pipe (1)
[1]
Liquid side shutoff valve
(Air-conditioner)
4PEN448939-1A.book Page 10 Monday, September 5, 2016 7:12 PM
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