30
E.3.1.3. Routing Wires through Curb
(Option)
Use liquid tight connectors and tubing to
connect the electrical and low voltage control
cables between the base of the cabinet at the
raised section (See
Figure B.3.6. - A: Supply
And Return Dimensions For Downflow
Applications
for location of raised section) and
bottom of the control panel. Conduit and fittings
must meet all applicable codes.
Use Silicon and gaskets to seal the connection at
the base pan
E.3.1.4. Connecting to Contactor
terminal blocks
The recommended torque for securing wiring to
the contactor is
40 in-lb
.
See
Figure E.3. – A: Typical Thermostat Wiring
for wiring to the contactor.
E.3.2. Factory Installed
Disconnect
Refer to
Appendix G
for the unit wiring
diagrams, and to
Figure F.2. – A
for locations
to route wires into the cabinent or through the
curb/basepan of the unit.
E.3.2.1. Routing Wires into Cabinet
Refer to section
E.3.1.1.
and/or section
F.2.
for routing wires into the cabinet with a factory
installed disconnect.
E.3.2.2. Routing wires through Curb
(Option)
Refer to section
E.3.1.3.
for routing wires
through the curb with a factory installed
disconnect.
E.3.3. Connecting the
Convenience Outlet
E.3.3.1. Non-powered
The non-powered convenience outlet, if
purchased as an option for the unit, will come
shipped in a box within the blower compartment
of the unit. It will need to be removed and
installed into its proper configuration.
For connecting the non-powered convenience
outlet and all other information, refer to the
installation instructions for the accessory.
Manufacturer I&O part number: 92-42576-03
E.3.4. Checking Phase and Motor
Rotation
When using 3 phase power the only device that
is rotation dependent is the compressor. The
outdoor fan and indoor blower do not require
any adjustment and will turn backwards if
the phase is incorrect. Verify the direction of
rotation for the indoor blower motor before
starting up the compressors.
E.3.4.1. Checking Phase with VFD Drive
On any models with an ECM Direct Drive
Blower Motor or belt drive units with a Variable
Frequency Drive, VFD, the motor will always
rotate in the correct direction.
Correction phase must be checked by the
operation of the compressor.
E.3.5. Grounding Requirements
Refer to local codes as required. Must be
grounded to a common earth ground.
National Electric Code (NEC) / International
Building Code / Canadian Electrical Code
A diagram of the internal wiring of this unit is
located on the inside of control access panel
and in this manual. If any of original wire as
supplied with the appliance must be replaced,
the wire gauge and insulation must be same as
original wiring.
The low voltage wiring should be sized as
shown in
Figure F. – A: Field Wire Size for 24v
Thermostat Circuits
.
E. ELECTRICAL
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