Panasonic S-160PE1R5B Technical Data & Service Manual page 71

6. SELECTING THE LOCATION FOR INSTALLATION SERVICE
When installing multiple units, allow enough space in between the units and the side of the building.
Example of connecting tube process
(1) Front mounting
Flare processing
Joint
Cutting
tubing B
Joint
tubing A
(Front face)
(3) Rear mounting
Flare processing
Joint tubing B
Joint tubing A
Cutting
(Gas tubing connection) While the main gas tube is ø25.4, since connecting the outdoor unit's 3-way valve requires a ø19.05 flare, please be sure to use
standard accessories joint tubing B or A for connection (brazing), and connect as follows.
1. Since standard accessory joint tubing B comes supplied for connecting the outdoor unit's 3-way valve, machine the upper edge to ø19.05 flare specifications.
2. Refer to connection tube process examples (1) - (4) to cut the joint tubing A to the necessary length.
3. Braze the machined (cut) joint tubing A to the bottom edge of joint tubing B.
4. In order to protect wiring and parts in the unit, please carry out brazing outside the unit (since each type of joint tubing is differently oriented, carry out brazing
according to the orientations shown in the connection tube process diagrams).
5. Connect the brazed connection tubes to the outdoor unit's 3-way valve through the flare connection.
When cutting the tube, use a tube cutter and be sure to carry out deburring.
Ensure that water, sand etc. do not enter the interior of the tubing.
Using a flare tool, carry out sound flare process.
NOTE
Interconnecting refrigerant pipework, i.e. pipework external to the unitary components, should be marked with a Class label (see right figure) every two
metres where the pipework is visible. Label size is 50 mm × 50 mm. This includes pipework located in a ceiling space or any void which a person may
access for maintenance or repair work within that space.
(Right side face)
(Right side face)
1-11-1-1-13
(2) Right mounting/flare processing
Flare processing
Joint
Cutting
tubing B
Joint
tubing A
(4) Bottom mounting
Flare processing
Joint tubing B
Joint tubing A
Cutting
(Unit: mm)
(Right side face)
(Right side face)
1