Electrical Work - Toshiba RAV-SP242AT2P-UL Installation Manual

7

Electrical work

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.
• The appliance shall be installed in accordance
with national wiring regulations.
•
Before performing service or maintenance, be
sure main power switch is turned OFF.
CAUTION
All wiring and connections must comply with NEC,
CEC, local codes.
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.
Electrical control box
Field wiring
terminal
blocks
Valve mounting
bracket Conduit
connection
holes
holes
Front pipe cover
Piping knockout
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Field wiring
■
The dashed lines show field wiring.
(Field power (System
supply) interconnection wires)
Input
L L L
1 1
1
power
L L
2 L
2 2
208/230 V~,
S S
60 Hz
circuit breaker
Outdoor unit Indoor unit
ground
•
System interconnection wire size must be AWG16.
• Breaker must have a capacity specifi ed in the
following table.
• All wiring must comply with local electric codes and
NEC (National Electric Code) or CEC (Canadian
Electric Code).
Model RAV- SP242
Power supply 208/230 V, 60 Hz
MCA 17 A
MOCP (MAX Fuse/CB) 25 A
Breaker 20 A
System interconnection wires AWG16
Field power supply wire AWG12
MCA = Minimum Circuit Amps
MOCP = Maximum Over Protection Device Amps.
•
Connect the system interconnection (indoor to
outdoor) wires to the identical terminal numbers on
the terminal block of each unit.
Incorrect connection may cause a failure.
Front
panel
1. With the front panel removed the electrical control
box is exposed at the top right corner 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 as shown on the following
pages. Terminate the wires at field wiring terminal
blocks located immediately below the electrical
control box.
System
interconncection
terminal block
L L S
1 2
Ground screw Ground screw
System
Field power
interconnection
supply wires
wires
Remote
controller
Banding band
Wiring
■
1. Remove front panel and remove the front pipe
cover.
Front pipe cover
2. Remove the wire cover from back of the front pipe
cover.
– 12 –
Field power supply 3. Pass the wires through the conduit connection
terminal block holes and attach the conduit connecters.
L L
1 2
Conduit connector
4. Connect the wires to the terminal blocks and fix
the wires to the wiring guide with the 3 included
banding band.
Remove the
4 screws.
Wire cover
Cable cover
Terminal block
Do not make the
wires slack in this
section.
Fix with the
2 banding band
Wire guide
EN
TH
ID
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