Installing The Drain Piping - Panasonic S-140MH1H5 Installation Instructions Manual

3-4. Installing the Drain Piping

(1) Prepare standard hard PVC pipe (O.D. 32 mm) for the drain and use the
supplied drain socket to prevent water leaks.
The PVC pipe must be purchased separately.
When doing this, apply adhesive for the PVC pipe at the connection point.
(2) If connecting a drain socket (supplied) to the threaded drain port, first wrap the
drain port threads with sealing tape, then connect the joint. (Fig. 3-9)
(3) Ensure the drain pipe has a downward slant (1/100 or more). (See the
Fig. 3-10)
(4) The drain pipe with a trap should be installed away from the indoor unit.
(5) Do not forcibly install the drain pipe to the indoor unit tubing.
If forcibly installed, it may result in water leakage.
(6) The drain pipe should be fixed at the nearest of the indoor unit.
Failure to do so may result in water leakage.
(7) Do not attach any air purge equipment.
If attached, drain water may result in splashing out of the drain pipe.
(8) When the drain piping is completed, perform the water leak test and check for
a water leak.
If detected, it may result in water leakage or condensation.
(9) When the drain piping is completed, perform the drainage test if the water
drains smoothly.
If not draining smoothly, it may result in water leakage or condensation.
(10) When the drain piping work is finished securely, wrap the insulation material
around the indoor side drain pipe.
At this time, do not wrap together with the refrigerant tubing.
If wraped together, the drain pipe is lifted and water drainage will not be
operated.
Coincidentally, the water comes out of the drain pan and it can lead to water
leakage.
Drain pan
*a: over 100mm
*b: over 50mm
Note:
Since the drain trap area easily accumulates
the dust inside the drain pipe, necessarily
install the plug in order to clean out the drain
trap.
13
Sealing tape
Drain socket
(supplied)
Drain port
(25A male screw)
Fig. 3-9
Downward slant
Min. 1/100
Correct
Incorrect
Fig. 3-10
Inspection plug
Fig. 3-11