Panasonic 2WAY-Multi U-10MES2E8 Bedienungsanleitung Seite 18

3-3. Connecting the refrigerant tubing
3-3-1. Connecting the refrigerant tubing to the GHP outdoor unit
1. Remove the tube fastening rubber on the gas and liquid tubes from the pipe connection panel.
2. Open the knockout hole for the balance tube.
3. Connect the gas and liquid tubes and perform brazing.
4. Connect the balance tube and make a flare connection. (Tightening torque: 16±2N·m)
5. Reattach the gas tube, liquid tube, balance tube fastening panel, and fastening rubber as they were
originally. The balance tube fastening rubber comes packaged on the reverse side of the rear panel of the
GHP outdoor unit.
Pressure reducing valve
CAUTION
Be sure to perform the following before brazing.
• The rubber that fastens the tubes is damaged easily by heat. Be sure to remove it before brazing.
• Cool the tubes with wet cloths or other materials to prevent the value inside the machine from being
damaged by the brazing heat.
• Be sure to replace the contents of the tube with nitrogen to prevent the formation of an oxide film. (Oxygen,
carbon dioxide or refrigerant may not be used.)
• Do not use commercially available oxide film agents (antioxidants). They can adversely affect the
refrigerant and the refrigeration oil, and can cause malfunctions.
• If using flare connections (for the indoor connectors or other part), apply refrigeration oil to the flared part.
Tube connection panel
Knockout hole
Rear panel
Liquid tube
Fig. 17
EN - 18
Liquid tube fastening rubber
Gas tube fastening rubber
Balance tube
Gas tube
Balance tube
Liquid tube
Gas tube