Trane Variable Refrigerant Flow System Mini Outdoor Unit Series Instrukcja Instalacji Pobierz pdf (Strona 35)

VRF-SVN33A-EN 35

Refrigerant

Charging the Refrigerant

After calculating the correct amount of refrigerant needed by the system (see “Calculating the

Refrigerant” p. 34), charge the system as described in the following procedure:

1. Attach the liquid manifold hose to the liquid side service port and open the manifold gauge

valve.

2. Add the liquid refrigerant, making sure the refrigerant bottle is held in an upright position. Use

a scale to determine that the correct amount has been added.

3. Close the refrigerant container immediately after adding the refrigerant.

4. If you are unable to add all of the refrigerant needed into the liquid side, close the liquid side

service port and remove the liquid manifold hose.

5. Attach the gas manifold hose to the gas side service port and open the manifold gauge valve.

Figure 21. Charging additional refrigerant

6. Press K2 once to initiate refrigerant charging in cooling mode.

7. To determine if the amount of refrigerant added is correct, use the automatic refrigerant

function (see “Refrigerant detection operation” p. 46).

8. After charging the refrigerant, close the service valves and replace caps.

WARNING

Hazard of Explosion and Deadly Gases!

Do not heat the refrigerant container to speed up the charging process. An explosion could

result, resulting in death or serious injury.

NOTICE

Risk of Unit Malfunction!

Do not leave the front panel open while charging refrigerant. If the front panel is open, the

amount charged into the unit will be incorrect.

NOTICE

Unit Component Damage!

Open the gas side and liquid side service valves completely after charging the refrigerant. If

you operate the unit with the service valves closed, the unit may be damaged.

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Trane Variable Refrigerant Flow System Mini Outdoor Unit Series Instrukcja Instalacji Strona 35