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Step 6 — Install Accessories

Accessories requiring modifications to unit wiring should

be completed now. These accessories may include Winter

Start controls, Low Ambient controls, phase monitor,

Compressor LOCout. Refer to the instructions shipped

with the accessory.

Step 7 — Complete Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.
Do not use gas piping as an electrical ground. Unit

cabinet must have an uninterrupted, unbroken electrical

ground to minimize the possibility of personal injury if

an electrical fault should occur. This ground may consist

of electrical wire connected to unit ground lug in control

compartment, or conduit approved for electrical ground

when installed in accordance with NEC (National

Electrical Code); ANSI/NFPA 70, latest edition (in

Canada, Canadian Electrical Code CSA [Canadian

Standards Association] C22.1), and local electrical

codes.

WARNING

NOTE

: Check all factory and field electrical connections

for tightness. Field-supplied wiring shall conform with the

limitations of 63

F (33

C) rise.

Field Power Supply —

If equipped with optional Powered Convenience Outlet:

The power source leads to the convenience outlet’s

transformer primary are not factory connected. Installer

must connect these leads according to required operation

of the convenience outlet. If an always-energized

convenience outlet operation is desired, connect the

source leads to the line side of the unit-mounted

disconnect. (Check with local codes to ensure this method

is acceptable in your area.) If a de-energize via unit

disconnect switch operation of the convenience outlet is

desired, connect the source leads to the load side of the

unit disconnect. On a unit without a unit-mounted

disconnect, connect the source leads to compressor

contactor C and indoor fan contactor IFC pressure lugs

with unit field power leads.

All units except 208/230-v units are factory wired for the

voltage shown on the nameplate. If the 208/230-v unit is

to be connected to a 208-v power supply, the control

transformer must be rewired by moving the black wire

with the 1/4-in. female spade connector from the 230-v

connection and moving it to the 208-v 1/4-in. male

terminal on the primary side of the transformer. Refer to

unit label diagram for additional information.

Field power wires are connected to the unit at line-side

pressure lugs on compressor contactor C and TB1 (see

wiring diagram label for control box component

arrangement) or at factory-installed option non-fused

disconnect switch. Max wire size is #4 AWG (copper only).

NOTE

: TEST LEADS - Unit may be equipped with short

leads (pigtails) on the field line connection points on
contactor C or optional disconnect switch. These leads are
for factory run-test purposes only; remove and discard
before connecting field power wires to unit connection
points. Make field power connections directly to line
connection pressure lugs only.

FIRE HAZARD

Failure to follow this warning could result in

intermittent operation or performance satisfaction.
Do not connect aluminum wire between disconnect

switch and condensing unit. Use only copper wire.

(See Fig. 8.)

WARNING

COPPER

WIRE ONLY

ELECTRIC

DISCONNECT

SWITCH

ALUMINUM