Installation Service
10.INSTALL OUTDOOR UNIT
10.2.4Connecting Tubing between Indoor and Outdoor Units
Torque wrench
•Tightly connect the indoor side refrigerant tubing extended from the wall with the outdoor side tubing. (Fig. 30)
•To fasten the flare nuts, apply specified torque as:
Indoor unit
Spanner
Table 2
Tube Dia. | Tightening Torque |
6.35 mm | Approx. 15 - 20 N.m (1.5 - 2.0 kg.m) |
9.52mm Approx. 35 - 40 N.m (3.5 - 4.0 kg.m)
12.7mm Approx. 50 - 55 N.m (5.0 - 5.5 kg.m)
10.2.5Insulation of Refrigerant Tubing
IMPORTANT
To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material. The thickness of the insulation should be a min. 8 mm. (Fig. 31, 32)
CAUTION
After a tube has been insulated, never try to bend it into a narrow curve, as this may cause to break or crack.
10.2.6 Taping the Tubes
•At this time, the 2 refrigerant tubes (and electrical wire if codes permit) should be taped together with armoring tape. The drain hose may also be taped together as 1 bundle with the tubing.
•Wrap the armoring tape from the bottom of the outdoor to the top of tubing where it enters the wall. As you wrap the tubing, overlap half of each previous tape turn. (Fig. 33)
•Clamp tubing bundle to wall, using 1 clamp approx. every 120cm.
NOTE Do not wind the armoring tape too tightly, since this will decrease the heat insulation effect. Also, be sure the condensation drain hose splits away from the bundle and drips clear of the unit and the tubing.
10.2.7 Finish 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. 34) shows refrigerant tubing taped separately from the drain hose.
Outdoor unit
Fig.30
Insulation
Fig.31
Insulation
Thickness:
Min.min. 8 mm 8 mm
Fig.32
Clamp
Insulated tubes
Fig.33
Apply putty here
Tubing
Fig.34
30
