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EN-17
EN-18
*1
Use the vacuum pump, vacuum pump adapter, and gauge
manifold correctly referring to the manuals supplied with
each tool before using them.
Check that the vacuum pump oil is filled up to the specified
line of the oil gauge.
*2
When air is not charged, check again whether the connecting
port of the discharge hose, which has a projection to push
the valve core, is firmly connected to the charge port.
How to open the valve
Open or close the valve.
Liquid side
Open the valve with a 4 mm hexagon wrench.
Gas side
• While the valve is fully opened, after the screwdriver
has reached the stopper, do not apply torque
exceeding 5 N•m. Applying excessive torque may
damage the valve.
Valve handling precautions
• Open the valve stem until it strikes the stopper.
It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.
Cap tightening torque
Replenishing refrigerant
This model is a 30 m chargeless type that does not need
to have its refrigerant replenished for refrigerant pipes up
to 30 m. When a refrigerant pipe longer than 30 m is
used, add the specified amount of refrigerant.
Refrigerant replenishing procedure
1.
After vacuuming the refrigerant pipe, close the
valves and then charge the refrigerant while the air
conditioner is not working.
2.
When the refrigerant cannot be charged to the
specified amount, charge the required amount of
refrigerant from the charge port of the valve on the
gas side during cooling.
Requirement for replenishing refrigerant
Replenish liquid refrigerant.
When gaseous refrigerant is replenished, the refrigerant
composition varies, which disables normal operation.
Adding additional refrigerant
• L: Pipe length
• To add an additional amount of refrigerant for twin-
indoor unit types, refer to the installation manual
supplied with the branching pipe (sold separately).
• The refrigerant need not be reduced for a 30 meter (or
less) refrigerant pipe.
Valve unit
Charge port
Using a minus
screwdriver, turn it
counterclockwise by
90° until it hits the
stopper. (Full open)
Flare nut
Handle position
Closed completely
Opened fully
Main stopper
Movable part of valve (Stem)
Stopper pin
Valve size
Ø9.5 mm
33 to 42 N•m
(3.3 to 4.2 kgf•m)
Ø15.9 mm
20 to 25 N•m
(2.0 to 2.5 kgf•m)
Charge port
14 to 18 N•m
(1.4 to 1.8 kgf•m)
31~75 m: L
40 g × (L-30)
7
ELECTRICAL WORK
WARNING
1.
Using the specified wires, ensure that the wires
are connected, and fix wires securely so that
the external tension to the wires does not affect
the connecting part of the terminals.
Incomplete connection or fixation may cause a fire,
etc.
2.
Be sure to connect the earth wire. (grounding
work)
Incomplete grounding may lead to electric
shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for telephone
wires.
3.
The appliance shall be installed in accordance
with national wiring regulations.
Capacity shortages of the power circuit or an
incomplete installation may cause an electric shock
or fire.
CAUTION
• Wrong wiring may cause a burn-out of some electrical
parts.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core or inner
insulator of the power and inter-connecting wires when
peeling them.
• Use the power and Inter-connecting wires with
specified thicknesses, specified types and protective
devices required.
• Remove the panel, and you can see electric parts on
the front side.
• A metal pipe can be installed through the hole for
wiring. If the hole size does not fit the wiring pipe to be
used, drill the hole again to an appropriate size.
• Be sure to clamp the power wires and indoor/outdoor
connecting wires with a banding band along the
connecting pipe so that the wires do not touch the
compressor or discharge pipe.
(The compressor and the discharge pipe become hot.)
Furthermore, be sure to secure these wires with the pipe
valve fixing plate and cord clamps stored in the electric
parts box.
Electric parts box
Pipe valve
fixing plate
Cord
clamp
Pipe hole
Panel
