Panasonic S-22KA1E5S Service Manual page 150

Vacuum drying
After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves.
CAUTION Use two wrenches and tighten with regular torque.
ø6.35mm 18 (180)
ø9.52mm 42 (430)
11.11.5 INDOOR UNIT DRAIN PIPING
•
The unit has two drainage holes at both side.
The drainage hole without connection needs seal and
thermal insulation with accessories.
•
Always lay the drain with downward inclination (1/50 to
1/100).
Prevent any upward flow or reverse flow in any part.
•
5mm or thicker formed thermal insulator shall always be
provided for the drain pipe.
11.11.6 HEAT INSULATION
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water
Caution
leakage.
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
Overlap with heat
insulator for piping.
Band
(Accessory)
Indoor
unit
2. Precautions in high humidity circumstance.
This air conditioner has been tested according to the "JIS Standard Conditions with Mist" and have been
confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew point
temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material according
to the following procedure:
•
Heat insulation material to be prepared...
Adiabatic glass wool with thickness 10 to 20
mm.
•
Stick glass wool on all air conditioners that are
located in ceiling atmosphere.
•
In addition to the normal heat insulation
(thickness: more than 8 mm) for refrigerant
piping (gas piping: thick piping) and drain
piping, add a further of 10 mm to 30 mm
thickness material.
Flare nut fastening torque N•m (kgf•cm)
ø12.7mm
ø15.88mm
Heat insulator
for piping
(Local supply)
Heat insulator
(Accessory)
It may be required to take off this part for checking
or servicing the drain up motor. Please do not glue.
Make sure that there is no clearance here.
55 (560) ø19.05mm
65 (660)
Hose clip (Accessory)
Heat insulator (Local
supply) (The thickness
must be at least 8 mm.)
✳ Put the incision at the trap part of the heat insulator
(for water drain)
150
100 (1020)
Flexible hose with
heat insulator
(Accessory)
PVC pipe
(O.D. ø32)
(Local supply)
To be glued
Pipe down
Putty
Indoor
unit
Drain pipe
Pipe
Trap
Incision