Panasonic U-72MF1U9 Technical Data Manual page 57

5. HOW TO PROCESS TUBING
5-4. 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 the
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 ft. (Fig. 2-27)
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.
5-5. 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. 2-28)
Apply putty here
2 - 43
Design of 3WAY VRF SYSTEM
Clamp
Insulated tubes Drain hose
Fig. 2-27
Tubing
Fig. 2-28
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