8
Connect Ground and Power Wir
es
Connect ground wire to ground connection in control box for
safety. Connect power wiring to contactor as shown in Fig. 8.
DISCONNECT
PER N.E.C. AND/OR
LOCAL CODES
CONTACTOR
GROUND
LUG
FIELD GROUND
WIRING
FIELD POWER
WIRING
BLUE
3 PHASE ONLY
A94025
Fig. 8 --- Line Connections
A00010
Fig. 9 --- 3--Phase Monitor Control
(Applies to 3--Phase Units Only)
Table 3—Phase Monitor LED Indicators
LED STATUS
OFF
Nocallforcompressoropera-
tion
FLASHING Reversed ph ase
ON Normal
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Ensure compressor rotation is correct.
S 3--phase scroll compressors are rotation
sensitive.
S A flash LED on phase monitor indicates
reverse rotation. (See Fig. 9 and Table 3)
This will not allow contractor to be energized .
S Disconnect power to unit and interchange 2
field--wiring leads on unit contactor.
CAUTION
!
Connect Control Wiring
Route 24--v control wires through control wiring grommet and
connect leads to control wiring. Refer to Installation Instruction
packaged with thermostat.
Use No. 18 AWG color--coded, insulated (35_C minimum) wire.
If thermostat is located more than 100 ft. from unit, as measured
along the control voltage wires, use No. 16 AWG color--coded
wire to avoid excessive voltage drop.
All wiring must be NEC Class 1 and must be separated from
incoming power leads.
Use furnace transformer, fan coil transformer, or accessory
transformer for control power, 24-- v/40-- va minimum.
NOTE: Use of available 24--v accessories may exceed the
minimum 40 -- va power requirement. Determine total transformer
loading and increase the transformer capacity or split the load
with an accessory transformer as required.
Final Wiring
Check
IMPORTANT: Check factory wiring and field wire connections
to ensure terminations are secured properly. Check wire routing
to ensure wires are not in contact with tubing, sheet metal, etc.
STEP 8 —CompressorCrankcaseHeater
When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hr before starting unit. To furnish power to heater
only, set thermostat to OFF and close electrical disconnect to
outdoor unit.
A crankcase heater is required if refrigerant tubing is longer than
80 ft. Refer to the Longline Guideline Section -- Residential
Split--System Air Conditioners and Heat Pumps Using Puron
Refrigerant.
STEP 9 —Install Electrical Accessories
Refer to the individual instructions packaged with kits or
accessories when installing.
123A / 124A
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