Daikin RXM35R5V1B [38/68] Piping installation

7 | Piping installation

Installer reference guide

RXJ-M(9)_RXA-A(9)_RXM-R(9)_ARXM-R(9)

R32 Split system air conditioners

4P519439-12M – 2021.02

a Service port and service port cap

b Valve stem

c Field piping connection

d Stem cap

▪ Keep both stop valves open during operation.

▪ Do NOT apply excessive force to the valve stem. Doing so may break the valve

body.

▪ ALWAYS make sure to secure the stop valve with a spanner, then loosen or

tighten the flare nut with a torque wrench. Do NOT place the spanner on the

stem cap, as this could cause a refrigerant leak.

a Spanner

b Torque wrench

▪ When it is expected that the operating pressure will be low (e.g. when cooling

will be performed while the outside air temperature is low), sufficiently seal the

flare nut in the stop valve on the gas line with silicon sealant to prevent freezing.

Silicon sealant, make sure there is no gap.

To open/close the stop valve

1 Remove the stop valve cover.

2 Insert a hexagon wrench (liquid side: 4 mm, gas side: 6 mm) into the valve

stem and turn the valve stem:

3 Insert a hexagon wrench (liquid side: 4 mm, gas side: 4 mm) into the valve

stem and turn the valve stem:

Counterclockwise to open

Clockwise to close

4 When the stop valve CANNOT be turned any further, stop turning.

5 Install the stop valve cover.

Result: The valve is now open/closed.

To handle the stem cap

▪ The stem cap is sealed where indicated with the arrow. Do NOT damage it.