Daikin LRNUN-AY1, Инструкция по установке и эксплуатации

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13 Piping installation
Installation and operation manual
21
LRYELRNUN5A7Y1
CO
₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
2 Tighten the packing holder.
3 Before mounting the valve cap, insert a new copper packing.
4 Apply screw lock agent or silicon sealant to the screw thread
when mounting the valve cap. If not, moisture and condensing
water may penetrate and freeze between the screw thread. As
a result, refrigerant may leak and the valve cap may break.
a
b
a Apply screw lock agent
b Do NOT apply screw lock agent
5 Tighten the valve cap.
Also see "13.2.3 Tightening torques" [
4
21].
13.2.2 To handle the service port
▪ Always use a charge hose equipped with a valve depressor pin,
since the service port is a Schrader type valve.
▪ After handling the service port, make sure to tighten the service
port cover securely. For the tightening torque, refer to the table
below.
▪ Check for refrigerant leaks after tightening the service port cover.
The figure below shows the name of each part required in handling
the stop valve.
a
b
c
a Service port cap
b Copper packing
c Valve cap
Open versus closed
All service ports are of the backseat type and do not have a valve
core.
A B
A Fully closed
B Fully open
To open the service port
1 Remove the service port cap with 2 spanners and remove the
copper packing.
2 Connect the charge port to the service port.
3 Remove the valve cap with 2 spanners.
4 Insert a hexagonal wrench (4 mm) and rotate counterclockwise
until it the end.
To close the service port
1 Insert a hexagonal wrench (4 mm) and rotate clockwise until the
end.
2 Tighten the valve cap.
3 Remove the copper packing of the service port cap.
a
a Copper packing
4 Add a new copper packing and mount the service port cap.
Apply screw lock agent or silicon sealant to the screw thread
when mounting the service port cap. If not, moisture and
condensing water may penetrate and freeze between the screw
thread. As a result, refrigerant may leak and the valve cap may
break.
a
b
a New copper packing
b Screw lock agent or silicon sealant only on screw thread
5 Tighten the service port cap.
Also see "13.2.3 Tightening torques" [
4
21].
13.2.3 Tightening torques
Stop valve
size (mm)
Tightening torque N•m (turn clockwise to close)
Shaft
Valve cap Packing
pressure
Valve stem Valve core
cap
Ø15.9 38.2~46.6 7.4~9.0 13.2~16.0 14.2~17.2
Ø19.1