Cooling Mode; Electric Heat Package (Optional); Blower Speed; Outdoor Motor (4 & 5 Ton) - Nordyne P5RF-KA Series 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 airflow data.
WIRE
MODEL
COLOR /
NUMbER
SPEED
P5RF -
0.1
TAP
Tap T1* 625
Tap T2 772
X24KA Tap T3** 899
Tap T4*** 1085 1044 1015 984
Tap T5 1227 1179 1146 1114 1086 1058 1011 951
Tap T1* 905 833
Tap T2 1136 1093 1052 1012 967
X36KA Tap T3** 1170 1133 1085 1050 1014 970
Tap T4*** 1485 1450 1405 1378 1340 1300 1264 1230
Tap T5 1608 1570 1535 1505 1470 1425 1375 1320
Tap T1* 1035 994
Tap T2 1215 1185 1136 1087 1055 1012 965
X48KA Tap T3*** 1568 1536 1501 1465 1428 1390 1352 1316
Tap T4** 1862 1820 1791 1751 1722 1681 1648 1610
Tap T5 1944 1917 1880 1843 1810 1773 1735 1696
Tap T1* 1172 1120 1077 1045 985
Tap T2 1187 1160 1119 1084 1043 987
X60KA Tap T3*** 1692 1655 1604 1587 1452 1506 1465 1420
Tap T4 1785 1744 1705 1667 1635 1584 1546 1505
Tap T5** 1875 1833 1800 1762 1734 1698 1658 1625
*Denotes Factory Set Low Cooling Speed
**Denotes Factory Set High Cooling Speed
***Denotes Factory Set Electric Heating Speed
Table 3. Airflow Data
External Static Pressure Drop
(inches water column)
0.2 0.3 0.4 0.5 0.6 0.7
591 526 445 — — —
735 693 632 562 491 —
870 844 797 736 670 597
948 887 841
785 630 589 560 515
922 867
933
965 914 878 838 778
933 895
935

blower Speed

For optimum system performance and comfort, it may
be necessary to change the factory speed setting. See
Table 3 for factory settings. NOTE: This model has a high
efficiency ECM motor with 5 speed taps.
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.
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 blue wires terminated to
the blower motor. The black wire controls the low speed
cooling and heating operations, the blue wire controls
high speed cooling and heating operations, and the
0.8
orange wire controls the electric heating operation.
—
—
540
To avoid personal injury or property damage,
777
make certain that the motor leads cannot come
—
into contact with any metal components of the
825
unit.
890
3. Verify the required speed from the airflow data found
in Table 3. Place appropriate wire on the appropriate
735
motor speed tap for the required airflow.
915
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.
860
Outdoor Motor - 4 & 5 Ton Models Only
897
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.
WARNING:
CAUTION:
CAUTION:
9