Shaping The Tubing; Installing The Drain Hose - Sanyo ECO R410A Installation Instructions Manual

3-21. Shaping the Tubing

Right-rear tubing
(1) Shape the refrigerant tubing so that it can easily go into the hole.
(Fig. 3-48)
(2) After performing a leak test, wrap both the refrigerant tubing and
drain hose together with insulating tape.
The drain hose should be positioned below the refrigerant tubes,
and should be given sufficient space so that no strong tension is
applied to it.
(3) Push the wiring, refrigerant tubing and drain hose through the hole
in the wall. Adjust the indoor unit so it is securely seated on the
rear panel.
Left or left-rear tubing
(1) Pass the tubing and drain hose into the rear of the indoor unit.
Provide sufficient length for the connections to be made.
Next, bend the tubing with a pipe bender, and connect them.
(Fig. 3-49)
(2) After performing a leak test, wrap the refrigerant tubing and drain
hose together with insulating tape, as shown in the figure at right.
(Fig. 3-50)
Then fit the tubing into the tubing storage space in the rear of the
indoor unit and clamp in place.
(3) Adjust the indoor unit so that it is securely installed onto the rear
panel.
NOTE
It is necessary to install the external electronic expansion valve kit for
the model 1962. For installation, refer to "3-24. External Electronic
Expansion Valve Kit (ATK-SVRK56BA)".

3-22. Installing the Drain Hose

a) The drain hose should be slanted downward to the
outside. (Fig. 3-51)
b) Never form a trap in the course of the hose.
c) If the drain hose will run in the room, insulate the hose* so that
chilled condensation will not damage furniture or floors.
* Foamed polyethylene or its equivalent is recommended.
WARNING
Do not supply power to the unit or operate
it until all tubing and wiring to the outdoor
unit are completed.
Rear panel tab
Plastic cover
Insulating tape
22
Insulating
tape
Refrigerant
tubing
Fig. 3-48
Insulation
Fig. 3-49
Refrigerant tubing
Rear panel
Inter-unit wiring
Drain hose
Fig. 3-50
Indoor unit
Refrigerant
tubing
Fig. 3-51
Indoor and
outdoor unit
connection wiring
Slant