Mitsubishi Electric CITY MULTI PURY-P-YNW-A2 Installation Manual page 43

9-9-2. Charging additional refrigerant
Charge the calculated amount of refrigerant in the liquid state to the unit through the service port after the completion
of piping work. Upon completion of all work, securely tighten all service port caps and shaft caps to prevent refrigerant
leakage.
<Notice>
・Do not vent the refrigerant into the atmosphere.
・Refer to the table below for the appropriate tightening torque.
Pipe size [mm (in)] Shaft cap (N·m)
ø9.52 (ø3/8)
ø12.7 (ø1/2)
ø15.88 (ø5/8)
ø22.2 (ø7/8)
ø28.58 (ø1-1/8)
・If the refrigerant tank does not have a siphon pipe, charge the liquid refrigerant with the tank upside-down as shown
in the figure below.
・After evacuation and refrigerant charging, ensure that the service valves are fully open. Do not operate the unit
with the service valves closed.
WT09973X01
Service port cap (N·m)
22.5
27.5 12
32.5
22 16
42
Ⓐ
Ⓐ Siphon pipe