Panasonic S-15MY2E5A Technical Data Manual page 11

3. How to install the indoor unit
3. How to install the indoor unit
3-7-3. Installing the Refrigerant Tubing
The size of the refrigerant tubing is as shown in the table below.
Table 2-10
Type
Gas tube
(Brazing connection)
ø9.52 (Flare connection)
Tightening torque (approximate)
Liquid tube
Thickness of connecting tube
NOTE
To fasten the flare nuts, apply specified torque.
1
• When brazing, must be cool the thermistor and the pipe by wet
cloths after removing the insulation tube and the cover plate.
• When brazing the gas tubing, cool the tubing with dampened
shopcloths as you work, as shown in the figure at right, to protect
the unit's thermistor from the heat generated by brazing.
2
• Pipe insulation must be made after leak detection for tubing
connection area was performed.
• Be sure to insulate both the gas tubing and liquid tubing.
In addition, wrap the supplied insulation material around the tubing
joints, and fasten in place with vinyl tape or other means.
Failure to insulate the tubing may result in water leakage from
3
condensation.
• Plug all gaps at tube through-holes in the unit with insulation or
a similar substance to prevent air leakage.
• When connecting to the 3WAY VRF system's outdoor unit, it is
necessary to install 2 units of solenoid valve kit (CZ-P160HR3).
4
For details, refer to the supplied instructions manual with the
outdoor unit and solenoid valve kit.
• When using as the fresh air intake mode (excluding Type 180)
with connecting to the 2WAY VRF outdoor unit, it is necessary
to connect with the RAP valve kits (CZ-P160RVK2).
For details, refer to the section "3-7-9. How to Use Fresh Air
5
Intake Mode".
6
7
8
9
180
ø19.05
(Brazing connection)
ø9.52 (Flare connection)
Tightening torque (approximate)
: 34 ~ 42 N • m
Thickness of connecting tube
: 0.8 mm
224
ø19.05
(Brazing connection)
ø9.52 (Flare connection)
Tightening torque (approximate)
: 34 ~ 42 N • m
Thickness of connecting tube
: 0.8 mm
Insulation
tube
Longer screw
2-59
2-59
Design of VRF SYSTEMS
Design of VRF SYSTEMS
280
ø22.22
: 34 ~ 42 N • m
: 0.8 mm
Gas tubing
Thermistor
(inside unit)
Cover plate
Dampened
1
shopcloths
(wet cloths)
2
3
4
5
6
7
8
9