Immergas AUDAX PRO 4 V2 - Adding Refrigerant

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8.12 ADDING REFRIGERANT.
- Measure the amount of refrigerant based on the length of liquid
side pipe. Use a scale to add the xed amount of refrigerant
- Connect the pressure gauge to the manifold and bleed the man-
ifold.
- Open the manifold pressure gauge valve of the liquid side service
valve and add refrigerant liquid.
- If it is not possible to completely recharge the additional refrig-
erant, while the outdoor unit is stopped, use the key on the PCB
of the outdoor unit to recharge the remaining refrigerant.
- Adding refrigerant in cooling
- 1) Press the function key to add refrigerant in cooling mode.
- 2) Open the valve on the gas side aer 20 minutes of operation.
- 3) Open the valve on the low-pressure side of the manifold
pressure gauge to recharge the remaining refrigerant.
- Adding refrigerant in heating
- 1) When recharging the refrigerant in heating, connect the
low-pressure pipe from the manifold pressure gauge to the
recharge intake door.
- 2) Press the function key to add refrigerant in heating mode.
- 3) Open the valve on the recharge intake door aer 20 minutes
of operation.
- 4) Open the valve on the low-pressure side of the manifold
pressure gauge to recharge the remaining refrigerant.
ATTENTION:
- open the gas side and liquid side ser-
vice valve completely aer charging
the refrigerant. (If the condensing unit is
used with the service valve closed, important
parts could be damaged).
Adding refrigerant in cooling conditions
Adding refrigerant in heating conditions
Manifold pressure gauge
Intake charge
Intake charge
Manifold pressure gauge
High pressure
side
High pressure
side
Low pressure
side
Low pressure
side
Gas side
Gas side
Scale
Scale
Liquid side
Liquid side
Service valve
Service valve
Outdoor
unit
Outdoor
unit