Panasonic S-15MY2E5A Technical Data Manual page 12

3. How to install the indoor unit
3. How to install the indoor unit
3-7-4. 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. 2-147)
(3) Ensure the drain pipe has a downward slant
(1/100 or more). (See the Fig. 2-148)
(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.
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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.
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(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.
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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.
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Coincidentally, the water comes out of the drain pan and it can lead to
water leakage.
3-7-5. Caution for Ducting Work
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• This unit has high static pressure.
In case of small pressure resistance (for instance,
a short duct), install an airflow control damper (field
supply) for adjusting airflow volume as airflow
volume / airflow noise increases.
• If the air conditioner is to be installed in a room such
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as an office or meeting room which needs a low
sound level, provide a supply and return sound
absorption chamber with an acoustic liner.
• Use a flexible canvas connection or vibration isolation
hanger (field supply) to break transmission of
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mechanical vibration of the unit.
CAUTION
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• Use incombustible duct materials.
• Use thermal insulation to prevent duct condensation.
• An air filter (field supply) must be installed at the air intake side.
If not installed, the heat exchanger will get dirty and the unit will reduce the quality.
• Obtain and install an air filter (field supply) which can easily wash away the dust by lukewarm,
soapy water or suck up with a vacuum cleaner.
• Clean the air filter periodically to collect dust and other particles from the air.
• Use duct static pressure within a range of specification value.
Sealing tape
Drain socket
(supplied)
Drain pan
Drain port
(25A male screw)
Fig. 2-147
Canvas connection
Sound absorbing chamber
Indoor unit
Thermal
insulation
Inspection
opening
Air discharge
Sound absorbing chamber
2-60
Design of VRF SYSTEMS
Design of VRF SYSTEMS
Downward slant
Correct
Incorrect
*a: over 100mm
*b: over 50mm
Inspection plug
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.
Airflow control damper
Sound absorbing chamber
Thermal
insulation
Air filter (field supply)
Ceiling panel
Min. 1/100
Fig. 2-148
Fig. 2-149
Air intake
Fig. 2-150