Panasonic U-2E15GBE / U-2E18CBPG Service Manual ▷ View online
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11 Installation Information
11.1. Check Points
11.2. The Shapes of the 3-Way Valve Caps of the Outdoor Unit Have Changed.
• Accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed.
• Firmly tighten the 3-way valve caps by hand and then tighten them up by another 30 degrees or so (one-twelfth of a full turn)
• Firmly tighten the 3-way valve caps by hand and then tighten them up by another 30 degrees or so (one-twelfth of a full turn)
using a spanner or adjustable spanner.
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11.3. Piping Length
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12 Installation Instruction
12.1. Select The Best Location
OUTDOOR UNIT
• If an awning is built over the unit to prevent direct sunlight or
rain, be careful that heat radiation from the condenser is not
obstructed.
obstructed.
• There should not be any animal or plant which could be
affected by hot air discharged.
• Keep the spaces indicated by arrows from wall, ceiling,
fence or other obstacles.
• Do not place any obstacles which may cause a short circuit
of the discharged air.
• If piping length is over the rated length, additional refrigerant
should be added as shown in the table.
12.1.1.
DISPOSAL OF OUTDOOR UNIT
DRAIN WATER
DRAIN WATER
• If a drain elbow is used, the unit should be placed on a stand
which is taller than 3 cm.
• If the unit is used in an area where temperature falls below
0°C for 2 or 3 days in succession, it is recommended not to
use a drain elbow, for the drain water freezes and the fan will
not rotate.
use a drain elbow, for the drain water freezes and the fan will
not rotate.
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12.2. Outdoor Unit
12.2.1.
INSTALL THE OUTDOOR UNIT
• After selecting the best location, start installation according
to Indoor/Outdoor Unit Installation Diagram.
1. Fix the unit on concrete or rigid frame firmly and
horizontally by bolt nut (ø10 mm).
2. When installing at roof, please consider strong wind and
earthquake. Please fasten the installation stand firmly
with bolt or nails.
with bolt or nails.
12.2.2.
CONNECTING THE PIPING
Connecting The Piping To Indoor Unit
Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe.
(In case of using long piping).
Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe.
(In case of using long piping).
Connect the piping
• Align the center of piping and sufficiently tighten the flare nut with fingers.
• Further tighten the flare nut with torque wrench in specified torque as stated in the table.
• Further tighten the flare nut with torque wrench in specified torque as stated in the table.
Connecting The Piping To Outdoor Unit
Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut
(locate at valve) onto the copper pipe.
Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.
(locate at valve) onto the copper pipe.
Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
3. Please make flare after inserting the flare nut onto the copper pipes.
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