Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual page 73

To open the stop valve
To close the stop valve
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Open versus closed
All stop valves are of the backseat type and do not have a valve core for the charge
port.
A
a
b
A Fully closed (connected between charge port and indoor unit side)
B Fully open (connected between outdoor unit and indoor unit)
a To outdoor unit
b To indoor unit
1 Remove the valve cap with 2 spanners.
2 Loosen the packing holder by rotating counterclockwise from 1/8 to 1/2 turn.
3 Turn the valve stem counterclockwise until it stops.
1
1 Turn the valve stem clockwise until it stops. Tighten with the appropriate
tightening torque.
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
16
B
a
b
2 3
Piping installation
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Installer and user reference guide
73