Panasonic CS-ME7CB1P Service Manual Download Page 39

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Terminals on the indoor unit

1 2 3

Color of wires

Terminals on the outdoor unit

1 2 3

• Secure the cable onto the control board with the holder (clamper).

• Lay the drain piping so as to ensure drainage.
• Use a locally purchased VP20 general rigid PVC pipe (outer

diameter ø26) for the drain piping,

and firmly connect the

indoor unit and the drain piping using PVC adhesive to
ensure that there is no leakage.

• Drain piping located indoors should always be insulated by

wrapping with locally purchased insulation (foamed polyethylene
with a thickness of 10 mm or more).

• The drain piping should have a downward gradient (1/50 or more),

and should be secured using pipe hanging equipment to avoid
creating hills or traps partway.

• Remove the control box cover and lead the connecting cable into the control box.
• Check the colors of the wires on the terminal board, and secure them with screws.
• Secure the outer sheath of the connecting cable with the cord clamp.
• Reattach the control box cover in its original position.

CAUTION

When connecting the
connecting cable, provide
approximately 40 cm of extra
length near the unit to facilitate
servicing of electrical parts.

• Align the center of the half-union and the connection pipe and

tighten the flare nut by hand, then tighten with a torque wrench.

• After the piping is connected, insulate as shown in the illustration

below.

Liquid side ø6.35 (1/4")

Gas side ø9.52 (3/8")

Pipe diameter

Tightening torque

Check the Drainage

Check after connecting the power supply.

• Pour approximately 600 cc of water into the drain pan of the main

unit using a squeeze bottle, etc.

• Press the drain test run switch located on the control board of the

control box to start the drain motor, and check that the water
drains normally. (The drain motor operates for approximately 5
minutes and then stops automatically.) (See the diagram for
“Connecting the Indoor/Outdoor Connecting Cable”.)

18N • m (1.8 kgf • m)

42N • m (4.2 kgf • m)

Connecting the Drain Piping

Connecting the Indoor/Outdoor
Connecting Cable

Connecting and Insulating
the Refrigerant Piping

• Connecting cable between indoor unit and outdoor unit shall be approved

polychloroprene sheathed 4

1.5 mm

flexible cord, type designation 245 IEC

57(H05RN-F) or heavier cord.

• Ensure the color of wires of outdoor unit and the terminal Nos. are the same to the

indoor’s respectively.

• Earth lead wire shall be longer than the other lead wires as shown in the figure for

the electrical safety in case of the slipping out of the cord from the anchorage.

Absolutely do not install and extend the drain piping from the
main unit drain water outlet horizontally or upward or raise it
20cm or more. Doing so may result in poor drainage or
cause of drain motor failure.

• Should some obstacle prevent the drain piping from being

extended smoothly, the drain piping can be raised outside the
main unit as shown in the illustration below.

CAUTION

20 cm
or less

7 cm
or less

VP20 elbow VP20 pipe

Upward
gradient
or level

Connect the VP20 elbow directly
to the main unit outlet.

Downward gradient
1/50 or more

Trap

No insulation

Insulation (thickness
10 mm or more)