Daikin LRYEQ-AY - Инструкция по эксплуатации - Страница 13

LRYEQ16A7Y1

CONVENI-PACK

4P448939-1A – 2016.07

Installation manual

10

CAUTION

• 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.

NOTICE

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.

CAUTION

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

φ

9.5

Gas side shutoff valve

φ

25.4

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