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9.2.2. 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)
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.
Connect 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 (located
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. 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.
9.2.3. EVACUATION OF THE EQUIPMENT
1) Checking a gas leakage
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in
the following procedure.
MODEL Piping size (Torque)
Gas Liquid
E9EK 3/8” (42 N
•m) 1/4” (18 N•m)
C12EK 1/2” (55 N
•m) 1/4” (18 N•m)
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