Cooling Mode; Electric Heat Package (Optional); Blower Speed; Outdoor Motor (4 & 5 Ton) - Nordyne P5RF-X24K Installation Instructions Manual

Cooling Mode

1. On a call for cooling, the thermostat closes, and
applies 24VAC to the G & Y1 terminals of the control.
The compressor contactor closes and operates the
compressor in 1st stage.
2. If the thermostat is not satisfied in the required
time (based on the operation of the 2-stage cooling
thermostat), Y2 will energize and the compressor will
run at 2nd stage. Refer to the thermostat's Installation
Instructions for the cooling profile.
3. When the thermostat is satisfied, the G & Y terminals on
the control board de-energized and open the compressor
contactor.

Electric Heat Package (optional)

This air conditioner is shipped without an auxiliary electric
heat kit installed. If electric heat is desired, an accessory
heater kit must be field installed.
• Select the correct size heat package for the installation.
See specifications sheet for available kits and
application. Install the heater kit according to the to
the installation instructions provided with the kit.
• Installation is most easily accomplished before making
duct or electrical connections.
• The blower must be set to high speed for electric heat
operation. Refer to Table 3 for blower speeds.
Model Wire Color/
Number Speed Tap
T1
Orange/T2
Black/T3
X24K
Red/T4
T5
Orange/T1
T2
X36K Black/T3
Red/T4
T5
Orange/T1
T2
X48K Red/T3
Black/T4
T5
T1
Orange/T2
X60K
Red/T3
Black/T4
T5
* Denotes factory set low speed cooling / heating.
** Denotes factory set high speed cooling / heating.
*** Denotes factory set electric heating speed.
Table 3. Motor Lead Connection
Motor Air Flow
Speed (0.3 in. WC)
Low 520
Medium/Low* 560
Medium** 800
Medium/High*** 1,040
High 1,250
Low* 630
Medium/Low 900
Medium** 1,060
Medium/High*** 1,420
High 1,500
Low* 980
Medium/Low 1,230
Medium*** 1,400
Medium/High** 1,500
High 1,280
Low 1,060
Medium/Low* 1,204
Medium*** 1,504
Medium/High** 1,700
High 1,968

blower Speed

For optimum system performance and comfort, it may be
necessary to change the factory speed setting. See Table
3 for factory settings.
WARNING:
To avoid electric shock, personal injury, or death,
turn off the electric power at the disconnect
or the main service panel before making any
electrical connections.
To Change the blower speed of the high efficiency motor:
1. Disconnect all electrical power to the unit and remove
the service panel.
CAUTION:
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation. Verify
proper operation after servicing.
2. Locate the orange, black and red wires terminated to
the blower motor. The orange wire controls cooling
operation, the black wire controls high speed cooling
and the red wire controls the heating operation.
CAUTION:
To avoid personal injury or property damage,
make certain that the motor leads cannot come
into contact with any metal components of the
unit.
3. Verify the required speed from the airflow data found
in Table 3. Place appropriate wire on the appropriate
motor speed tap for the required airflow.
4. Check all factory wiring per the unit wiring diagram and
inspect the factory wiring connections to be sure none
loosened during shipping or installation.
Outdoor Motor - 4 & 5 Ton Models Only
The outdoor motor has variable speeds which adjust in
conjunction with the compressor and indoor blower motor.
The outdoor motor is preset at the factory and wired as
shown:
• 4 Ton Model: White wire is connected to Y1 and the
yellow wire is connected to Y2.
• 5 Ton Model: Yellow wire is connected to Y1 and the
white wire is connected to Y2.
NOTE: The blue wire from the outdoor ECM motor is
always common for either speed setting.
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