Electrical Work - Toshiba Carrier RAS-12EKCV-UL Service Manual

Outer dia. of copper pipe
Ø1/4 in. (Ø6.35 mm)
Ø3/8 in. (Ø9.52 mm)
Tightening torque for connection of flare pipe
•
The pressure of R410A is higher than R22.
(Approx. 1.6 times.) Therefore securely tighten the
flare pipes which connect the outdoor unit and the
indoor unit with the specified tightening torque
using a torque wrench.
Fig. 10-3-5
10-3-3. Wiring Connection
NOTE
All wiring and connections must comply with NEC,
CEC, and local codes.
Connect all wires to the correct terminal on the
•
wiring terminal blocks.
Make sure that all connectors are secure.
•
Size connectors per the ratings listed in the
•
system requirement section.
System interconnections should be minimum
•
AWG14.
1. MOUNT THE OUTDOOR UNIT POWER
DISCONNECT.
2. RUN POWER WIRING FROM MAIN BOX TO
DISCONNECT PER NEC AND LOCAL CODES.
3. Remove the valve cover and the cord clamp from
the outdoor unit.
4. Fix conduit connector to conduit plate by lock nut
and secure it tightly. Connect the power supply and
connecting cables to the terminal block as shown
in the figure below and secure it tightly with screws.
5. You should not have extra cables.
6. Secure the power cord and the connceting cable
with the cord clamp.
7. Attach the electric parts cover and the valve cover
on the outdoor unit.
8. RUN PIPING AND INTERCONNECTING CABLE
TO THE INDOOR UNIT.
Tightening torque
10 to 13 lbf.ft (14 to 18 N·m)
24 to 31 lbf.ft (33 to 42 N·m)
Flare at
indoor unit side
Flare at
outdoor unit side

10-3-4. Electrical Work

ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
The unit cabinet must have an uninterrupted or
unbroken ground to minimize personal injury if an
electrical fault should occur. The ground may
consist of electrical wire or metal conduit when
installed in accordance with existing electrical
codes.
Make sure main power switch is turned OFF before
performing service or maintenance.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in
equipment damage or improper operation.
Unit failure as a result or of improper line voltage
application or excessive phase imbalance
constitutes abuse and may cause damage to
electrical components. Such operation could void
any applicable warranty.
1. The supply voltage must be the same as the rated
voltage of the air conditioner.
2. Prepare the power source for exclusive use with the
air conditioner.
NOTE :
Power supply cord
Wire type : minimum AWG14
•
– 53 –
FILE NO. SVM-13071
WARNING
CAUTION