Panasonic S-36PU1E5A Service Manual page 407

Heat Insulation
CAUTION
Be sure to perform heat insulation on the drain,
liquid and gas piping.
Imperfection in heat insulation work leads
to water leakage.
(1) Use the heat insulation material for the refrigerant piping
which has an excellent heat-resistance (over 120°C).
(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.
Wall seal
When the outdoor unit is installed on a higher position than
the indoor unit, install the trap so as not to instill rain water
into the wall by transmitting in piping.
Stuff the space among piping, the electric wire, and the drain
hose with putty and seal the penetration wall hole.
Make sure that rain water do not instill into the wall.
6-8. Taping the Tubes
(1) At this time, the refrigerant tubes (and electrical wiring
if local codes permit) should be taped together with
armoring tape in 1 bundle. To prevent condensation from
overflowing the drain pan, keep the drain hose separate
from the refrigerant tubing.
(2) Wrap the armoring tape from the bottom of the outdoor
unit to the top of the tubing where it enters the wall. As you
wrap the tubing, overlap half of each previous tape turn.
(3) Clamp the tubing bundle to the wall, using 1 clamp approx.
each meter. (Fig. 1-138)
NOTE
Do not wind the armoring tape too tightly since this will decrease the heat insulation effect. Also ensure that the condensation
drain hose splits away from the bundle and drips clear of the unit and the tubing.
6-9. Finishing the Installation
After finishing insulating and taping over the tubing, use sealing
putty to seal off the hole in the wall to prevent rain and draft
from entering. (Fig. 1-139)
Overlap with heat
insulator for piping.
Band
(Accessory)
Indoor
unit
Pipe down
Indoor
unit
Drain pipe
* Put the incision at the trap part of the heat insulator
(for water drain)
Apply putty here
1-397
Heat insulator for piping
(Local supply)
Heat insulator
(Accessory)
Fig. 1-136
Putty
Pipe
Trap
Incision
Fig. 1-137
Clamp
Insulated tubes Drain hose
Fig. 1-138
Tubing
Fig. 1-139
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