Wiring - Hitachi AirCore 700 Installation & Maintenance Manual

•
Additional refrigerant charge
The unit has been filled with refrigerant.Please calculate
additional charge according to "Piping Requirement".
After finishing vacuum pump procedures, first exhaust air from
charge hose, then open valves, charge refrigerant through gas
stop valve.
At the end, please close valves and record the refrigerant charge
quantity.
This product contains fluorinated greenhouse gas covered by the
Kyoto Protocol.
Do not vent gas into the atmosphere.
Please fill in the refrigerant charge label that adhered in the
proximity of the product charging port with indelible ink.

4.6 Wiring

WARNING
!
•
Turn OFF the main power switch of the indoor unit and the outdoor unit and wait for more than 10
minutes before electrical wiring work or a periodical check is performed.
•
Check to ensure that the indoor fan and the outdoor fan have stopped before electrical wiring work or
a periodical check is performed.
•
Protect the wires, electrical parts, etc. from rats or other small animals. If not protected, rats may
gnaw at unprotected parts and at the worst, a fire will occur.
•
Avoid the wiring from touching the refrigerant pipes, plate edges and electrical parts inside the unit. If
not, the wires will be damaged and at the worst, a fire will occur.
•
Install an ELB (Electric Leakage Breaker) in the power source. If ELB is not used, it will cause electric
shock or fire at the worst.
•
This unit uses an inverter, which means that it must be used an earth leak detector capable of handing
harmonics in order to prevent malfunctioning of the earth leak detector itself.
•
Do not use intermediate connection wires, stranded wires (see <Attentions when Connecting the
Power Supply Wiring>), extension cables or control line connection, because the use of these wires
may cause abnormal heat, electric shock or fire.
•
The tightening torque of each screw is shown as follows.
M4: 1.0 to 1.3 N m
•
M5: 2.0 to 2.5 N m
•
M6: 4.0 to 5.0 N m
•
M8: 9.0 to 11.0 N m
•
M10: 18.0 to 23.0 N
•
Keep the above tightening torque during wiring work.
CAUTION
!
•
Use tape material to wrap the wire and seal wiring holes to prevent the condensed water and insects.
•
Tightly secure the power source wiring by using the cord clamp inside the unit.
NOTE:
•
Fix the rubber bushes with adhesive when conduit tubes to the outdoor unit are not used.
General Check
•
Make sure that the field-selected electrical components (main power switches, circuit breakers, wires,
conduit connectors and wire terminals) have been properly selected according to the electrical data.
Make sure that the components comply with International Electro technical Commission.
m
•
Contains fluorinate greenhouse gases.
Refrigerant
(A) GWP
Factory charge
Additional charge
(B) Total charge
tCO
For the value of "a", see the label.
-17-
4. Installation Instructions
R32
675
a
:
:
:
=(A)x(B)/1000
:
2
kg
kg
kg
tCO
2