Drain Piping Work - Panasonic CS-20PM1HPK Installation Manual

The flare nuts used must be those included with the main body.
• Refer to Table 1 for tightening torque.
Table 1
Pipe gauge
φ 6.4
φ 9.5
φ 12.7
φ 15.9
φ 19.1
Not recommendable but in case of emergency
You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may
follow the installation method mentioned below.
After the work is finished, make sure to check that there is no gas leak.
When you keep on tightening the flare nut with a spanner, there is a point where the tightening torque
suddenly increases. From that position, further tighten the flare nut the angle shown below:
Table 2
Pipe size
φ 6.4 (1/4")
φ 9.5 (3/8")
φ 12.7 (1/2")
φ 15.9 (5/8")
φ 19.1 (3/4")

7. DRAIN PIPING WORK

〈〈 〈〈 〈〈 〈〈Rig the drain pipe as shown below and take measures
against condensation. Improperly rigged piping could lead to
leaks and eventually wet furniture and belongings.〉〉 〉〉 〉〉 〉〉
(1) Connect the drain hose (1) using the attached hose and parts,
as shown in the right drawing.
(2) After piping work is finished, check drainage flows smoothly.
(3) Be sure to insulate all indoor pipes
CAUTION
Drain piping connections
Do not connect the drain piping directly to sewage pipes that smell of ammonia. The ammonia in the sew-
age might enter the indoor unit through the drain pipes and corrode the heat exchanger.
English
Tightening torque
14.2 – 17.2N·m (144 – 176 kgf·cm)
32.7 – 39.9N·m (333 – 407 kgf·cm)
49.5 – 60.3N·m (504 – 616 kgf·cm)
61.8 – 75.4N·m (630 – 770 kgf·cm)
97.2 – 118.6N·m (990 – 1210 kgf·cm)
Further tightening angle
60 to 90 degrees
60 to 90 degrees
30 to 60 degrees
30 to 60 degrees
20 to 35 degrees
Flare dimension
A (mm)
8.3 – 8.7
12.0 – 12.4
15.4 – 15.8
18.6 – 19.0
22.9 – 23.3
Recommended arm length of tool
Approx. 150mm
Approx. 200mm
Approx. 250mm
Approx. 300mm
Approx. 450mm
Drip pan
Clamp metal (Attached part) (2)
Drain hose (Attached part) (1)
50 or more
3/4 B drain pipe
Cut to suitable length
Flare shape
R 0.4 ~ 0.8
8