Panasonic Inverter Air Conditioner R410A Technical Data And Service Manual

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1. Specifications
5. SELECTING THE INSTALLATION SITE
5-1. Indoor Unit
AVOID:
  areas where leakage of flammable gas may be 
expected.
  places where large amounts of oil mist exist.
 direct sunlight.
  locations near inverter lamps which may affect the
performance of the unit.
  locations near heat sources which may affect the 
performance of the unit.
  locations where external air may enter the room 
directly. This may cause “sweating” on the air dis-
charge ports, causing them to spray or drip....

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1. Specifications
6.  HOW TO INSTALL THE INDOOR UNIT
4-Way Cassette Type
(U1 Type)
6-1. Suspending the Indoor Unit
This unit uses a drain pump. Use a level gauge to 
check that the unit is level.
6-2. Preparation for Suspending
(1)  Fix the suspension bolts securely in the ceiling 
using the method shown in the diagrams (Figs. 1-12 
and 1-13), by attaching them to the ceiling support 
structure, or by any other method that ensures that 
the unit will be securely and safely suspended.
(2)  Follow...

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1. Specifications
6-3. Placing the Unit Inside the Ceiling
(1)  When placing the unit inside the ceiling, determine 
the pitch of the suspension bolts using the 
supplied full-scale installation diagram. (Fig. 1-15) 
The size of the opening for the indoor unit can be 
confirmed by attaching the full-scale installation 
diagram beneath the unit. (Fig. 1-15)
Tubing and wiring must be laid inside the ceiling 
when suspending the unit. If the ceiling is already 
constructed, lay the tubing and wiring...

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1. Specifications
6-4. Installing the Drain Piping
(1)  Prepare standard hard PVC pipe for the drain and 
use the supplied drain hose and hose band to pre-
vent water leaks.
The PVC pipe must be purchased separately. The 
transparent part allows you to check drainage.
(Fig. 1-17)
(2)  After checking the drainage, wrap the supplied 
packing and drain pipe insulator around the pipe. 
(Fig. 1-18)
NOTE
Ensure the drain pipe has a downward gradient (1/100 
or more) and that there are no water traps....

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1. Specifications
6-5. Checking the Drainage
After wiring and piping are completed, use the follow-
ing procedure to check that the water will drain smooth-
ly. For this, prepare a bucket and wiping cloth to catch 
and wipe up spilled water.
(1)  Take off the tube cover and through the opening, 
slowly pour about 0.3 gal of water into the drain 
pan to check drainage.
(2)  Do Test Run to check the drainage after complet-
ing installation. When performing Test Run, refer to 
the installation...

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1. Specifications
Ceiling Panel
6-6. Before Installing the Ceiling Panel
(1)  Remove the air-intake grille and air filter from the 
ceiling panel. (Figs. 1-24 and 1-25)
(a)  Remove the 2 screws on the latch of the air-
intake grille. (Fig. 1-24)
(b)  Press on the 2 latches of the air-intake grille 
with your thumbs in the direction of the arrow 
to open the grille. (Fig. 1-24)
(c)  With the air-intake grille open about 45°, 
remove the safety cord (hook on the grille 
side). (Fig. 1-25)
(d)  Pull...

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1. Specifications
6-7. Installing the Ceiling Panel
(1)  Lift the ceiling panel and position it to align the 
panel hook with the panel catch of the indoor unit.
NOTE
The ceiling panel must be mounted in the correct 
direction. Note that the 2 catches of the panel differ in 
size. Confirm that the catches are correctly matched 
between the ceiling panel and the indoor unit body.
(2)  Next, check to see that the ceiling panel is prop-
erly aligned with the seamline of the ceiling. If it is 
not,...

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1. Specifications
6-9. Duct for Fresh Air
  There is a duct connection part on side of the indoor 
unit. (Fig. 1-27)
(1) Accessories
  Check that the following parts are in the box when 
unpacking.
(2) Installation
Fit the duct connection box into the rectangular hole of 
air-intake plenum with the accessory screws. 
(M4 × L1/2, 4 pcs)
(c) Installing the indoor unit
Install the indoor unit to the ceiling. 
(Install the indoor unit according to instructions enclosed 
with the outdoor unit.)...

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1. Specifications
(d) Installing the ceiling panel
Attach the ceiling panel to the air-intake plenum. 
Drawing the panel downwards sets the panel in position 
temporarily with the panel catch (at 2 locations).
Remove the socket cover of the air-intake plenum and pass 
the 8P sockets through it. 
(Fix the panel lead wire to air-intake plenum side clamper.)
Connect the 3P socket (white) and 2P socket (green) to the 
other side of the 3P socket (white) and 2P socket (green) 
respectively.
Reattach the...

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1. Specifications
Wall Mounted Type (K1 Type)
6-10. Removing the Wall Fixture from the Unit
Remove the set screws and take off the rear panel. 
(Fig. 1-30)
NOTE
Tubing can be extended in 3 directions as shown in 
Fig. 1-31. Select the direction that provides the shortest 
run to the outside unit.
6-11. Selecting and Making a Hole
(1)  Remove the rear panel from the indoor unit and 
place it on the wall at the location selected. Make 
sure the unit is horizontal using a level gauge or 
tape measure...