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Toshiba
–14–
Outdoor Unit
Installation Manual
EN
7 ELECTRICAL CONNECTIONS
WARNING
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.
• Before performing service or maintenance, be sure
main power switch is turned OFF.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage
or improper operation.
• Unit failure as a result of operation on improper line
voltage or excessive phase imbalance constitutes
abuse and may cause damage to electrical
components.
• Wrong wiring may cause a burn-out of some electrical
parts.
• Do not damage or scratch the conductive core or inner
insulator of the power and inter-connecting wires
when peeling them.
Field wiring
The dashed lines show field wiring.
• Connect the indoor/outdoor connecting wires to the
identical terminal numbers on the terminal block of
each unit.
Incorrect connection may cause a failure.
1. With the valve cover removed the electrical control
box is exposed the side of the unit.
2. Terminate the field wiring conduit (if used) at the
conduit connection holes provided.
3. Route the field power wires and the system
interconnection wires (indoor to outdoor). Terminate
the wires at field wiring terminal blocks.
Wiring
All wiring and connections must comply with NEC,
CEC, local codes.
1. Connect all wires to the correct terminal on the
wiring terminal blocks.
2. Make sure that all connectors are secure.
3. Size connectors per the ratings listed in the system
requirement section.
4. System interconnections should be minimum, 16
AWG.
Field power
supply wires
Valve cover
System
interconnection wires
Conduit
L
1
L
2
L
1
L
2
S
L
1
L
2
S
Input
power
(Main circuit)
(Indoor/outdoor
connecting wires)
ground
Outdoor unit Indoor unit
Remote
controller
circuit breaker
208/230 V~,
60 Hz
L1 L2 L1 L2S
L1 L2 SL1 L2
Field wiring terminal blocks
Ground screw
System interconnection
wires
Field power
supply wires
14-EN
+00EH99865301_00Ta.book Page 14 Wednesday, November 25, 2009 11:05 AM