Charging Additional Refrigerant - Mitsubishi Electric CITY MULTI PURY-M-YNW-A Serie Manual De Instalación

Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
The unit shall be stored in a room without continuously operating ignition sources (for
example: open flames, an operating gas appliance or an operating electric heater.)
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
The unit shall be installed, operated and stored in a room with a floor area according to the
following figure.
The HBC controller(s) shall not be installed in a condition with certain floor area and the
refrigerant amount as shown in the figure below.
500
450
400
350
Installation "Good"
300
250
200
150
100
50
0
0 5 10
System refrigerant amount [kg]
(When installed in the ceiling of 1.8 meters high)
The unit shall be properly stored to prevent mechanical damage.

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)
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.
WT08842X01
Installation "NG"
15 20 25 30 35
Shaft (N·m) Size of hexagonal wrench [mm (in)]
22 -
22 -
40
-
-
GB-36
Service port cap (N·m)
16
16
Ⓐ
Ⓐ Siphon pipe