EN-3
• Use a solid or stranded wire.
Connecting cable: AWG16 or AWG14
Power supply cable: AWG12
• Use a copper wire.
• Follow local electrical codes.
• Use a double insulated cable with 600 V insulation.
(1) Strip the copper wires. (Fig.1)
(2) Remove the side cover and the cable cover.
(3) Remove the service panel.
(4) Remove the shipping pad.
(5) When connecting indoor unit for 3 unit or
more, remove the conduit holder and open
the knock out hole in the conduit holder.
And then reattach the conduit holder to the
unit.
(6) Attach the conduit connector to conduit
holder with the lock nut.
(7) Pass the cables through the conduit
connector.
Lo
Hi
Hexagon wrench
Gauge manifold
Compound
gauge
Perform air removal using a vacuum pump.
Use a vacuum pump, gauge manifold and hoses exclusively for R410A.
(1) Remove both valve shaft caps of the stop valves.
(2) Remove the service port cap of the stop valve (gas side).
(3) Connect the gauge manifold hose to the service port and the vacuum pump.
Be sure that the hose end to be connected to the service port has a valve core pusher.
(4) Open the gauge manifold valve and turn on the vacuum pump for 10-15 minutes.
Make sure the compound gauge reads -0.1 MPa(-76 cmHg)(-30 in. Hg).
(5) Close the gauge manifold valve.
(6) Turn off the vacuum pump.
Leave as it for 1-2 minutes and make sure the needle of the compound gauge
does not go back.
(7) Open the stop valve (liquid side) 90° counterclockwise by turning the hexagon
wrench. Close it after 5 second, and check for gas leakage.*
(8) Disconnect the gauge manifold hose from the service port.
(9) Fully open the stop valve (liquid side) with hexagon wrench.
Turn all the way up to contact.
(10) Fully open the stop valve (gas side) with hexagon wrench. Turn all the way up
to contact.
(11) Firmly tighten the service port cap and both valve shaft caps with a torque
wrench at the specifi ed tightening torque.
* Check the pipe connections for gas leak using a leakage detector or soapy water.
Regarding leakage detector, use high-sensitivity type designed specially for R410A.
Valve shaft cap tightening torque
Torque
Liquid side
17.7±2.1 ft·lbf (24±3 N·m)
Gas side
22.9±2.1 ft·lbf (31±3 N·m)
Valve shaft cap
OPEN
Stop valve
(gas side)
Stop valve
(liquid side)
Hose
Service port
Vacuum pump
Service port
4mm
3 AIR REMOVAL
4 CONNECTING THE CABLE TO THE OUTDOOR UNIT
2.2 inch (55 mm)
1.8 inch (45 mm)
1.8 inch (45 mm)
2.6 inch (65 mm)
Connecting cable
Power supply cable
In case using solid wires
Stripping length: 0.7 inch (18 mm)
Be sure to make the wire hook-shaped.
Earth wire
Earth wire
Side cover
Service panel
Cable cover
Conduit holder
Shipping pad
0.7 inch (18 mm)
Copper wire
Round terminal
0.3 inch(8 mm)
Copper wire
In case using stranded wires
Stripping length: 0.3 inch (8 mm)
For power supply cable, securely clamp a round
terminal to each end of the stripped wire.
Fig.1
Knock out hole
Conduit holder
Conduit connector
Lock nut
Service port cap tightening torque
Torque
8.1±0.74 ft·lbf (11±1 N·m)
IM_A3AEX4M3PU(B434)_EN+FR+ES.indb EN-3
IM_A3AEX4M3PU(B434)_EN+FR+ES.indb EN-3
2/7/13 11:05:28 AM
2/7/13 11:05:28 AM
