Taping The Tubes; Finishing The Installation - Panasonic Inverter R32 Series Technical Data & Service Manual

CAUTION
If the exterior of the outdoor unit valves has been finished
with a square duct covering, make sure you allow sufficient
space to access the valves and to allow the panels to be
attached and removed.
Taping the flare nuts
Wind the white insulation tape around the flare nuts at the gas
tube connections. Then cover up the tubing connections with
the flare insulator, and fill the gap at the union with the supplied
black insulation tape. Finally, fasten the insulator at both ends
with the supplied vinyl clamps.
Sealer (supplied)
Insulation tape (white) (supplied)
Unit side
insulator
Flare nut
Vinyl clamps (supplied)
Insulation material
The material used for insulation must have good insulation
characteristics, be easy to use, be age resistant, and must not
easily absorb moisture.
Drain pipe and insulator
Drain insulator
and clamp
Packing clamp
Small hose
band
Seal
CAUTION
After a tube has been insulated, never try to bend it into
a narrow curve because it can cause the tube to break or
crack.
Never grasp the drain or refrigerant connecting outlets
when moving the unit.
Flare insulator (supplied)
Tube insulator
(not supplied)
Heat resistant
120°C or above
Refrigerant tubing
and insulator
Insulation tape
Vinyl clamp
Flare insulator
The procedure used for
installing the insulator for
both gas and liquid
tubes is the same.
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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.
(4) 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.
Inter-unit
control wiring
N OTE
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.

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.
Apply putty here
Gas tube
Liquid tube
Armoring tape
Insulation
Tubing
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