Blower Speed; Standard Motor (2, 2.5 And 3 Ton); High Effi Ciency Motor (3.5, 4, And 5 Ton) - Nordyne P5RD Series User's Manual & Installation Instructions

thermostat prevents simultaneous operation of the heating
and cooling units and is equipped with an ON-AUTO fan
mode that allows the home owner to operate the indoor
blower when only air circulation is desired. Connect the
red, yellow, green and brown low voltage wires to the R or
RC, Y, G and W terminals respectively on the thermostat
base. The black wire is the 24 volt common required on
some thermostats. See Figure 9.
2 WIRE COOLING THERMOSTAT
RED
R
YELLOW
Y
GREEN
BROWN
CONTROL WIRE LEGEND:
GREEN - Blower Relay
RED - Transformer (24V)
YELLOW - Cooling 1st Stage
BROWN - Heating 1st Stage
ORANGE - Heating 2nd Stage
Figure 9. Low Voltage Connections
Thermostat
Wire Gauge
2-Wire
(Heating)
24
22
20
18
Table 3. Thermostat Wire Gauge

Blower Speed

For optimum system performance and comfort, it may be
necessary to change the factory speed setting.
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.

Standard Motor (2, 2.5 and 3 Ton)

1. Disconnect all electrical power to the unit and remove
the service panel.
2. Place the desired blower speed lead on the COM
terminal. Use another wire tie (fi eld supplied) to bundle
the remaining motor leads.
10
4 WIRE HEAT/COOL THERMOSTAT
RED
R
YELLOW
Y
GREEN
G
BROWN
W
ORANGE
Single Stage Electric Heat
RED
R
Y YELLOW
GREEN
G
W BROWN
ORANGE
Two Stage
Electric Heat
Recommended T-Stat Wire
Length (Unit to T-Stat)
5-Wire
(Heating/Cooling)
55 25
90 45
140 70
225 110
High Effi ciency Motor (3.5, 4, and 5 Ton)
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 and red wires terminated to the blower
motor. The orange wire controls cooling operation and
the red wire controls the heating operation.
CAUTION:
To avoid personal injury or property damage,
make sure the motor leads cannot come into
contact with any metal components of the unit.
3. Verify the required speed from the airfl ow data found
in Table 4. Place appropriate wire on the appropriate
motor speed tap for the required airfl ow.
4. Check all factory wiring as shown in the wiring diagram
and inspect the connections to make sure none of them
loosened during shipping or installation.
Model
Speed External Static Pressure (in. WC)
Number
Tap
P5RD 0.1
Low* 847
024K
High** 1,104 1,114 1,064 1,010
Low † 847
030K
High 1,104 1,114 1,064 1,010
†
Low 1,323 1,285 1,246 1,196 1,146 1,087
036K
High 1,559 1,525 1,486 1,430 1,381 1,315
Tap T1 1,100
Tap T2 1,170 1,080 1,000
042K Tap T3 1,220 1,180 1,140 1,100 1,070 1,020
Tap T4* 1,370 1,333 1,300 1,260 1,230 1,180
Tap T5** 1,410 1,340 1,450 1,320 1,280 1,240
Tap T1 1,380 1,360 1,340 1,300 1,260 1,240
Tap T2** 1,530 1,480 1,450 1,420 1,390 1,350
048K Tap T3* 1,570 1,540 1,500 1,475 1,440 1,405
Tap T4 1,740 1,700 1,650 1,630 1,600 1,560
Tap T5 2,130 2,080 1,970 1,890 1,850 1,800
Tap T1 1,380 1,360 1,340 1,300 1,260 1,240
Tap T2** 1,530 1,480 1,450 1,420 1,390 1,350
060K Tap T3 1,570 1,540 1,500 1,475 1,440 1,405
Tap T4* 1,740 1,700 1,650 1,630 1,600 1,560
Tap T5 2,130 2,080 1,970 1,890 1,850 1,800
NOTE: Airfl ow performance is with a dry coil
* Denotes factory set cooling speed
** Denotes factory set electric heating speed
†
Factory set cooling and electric heating speed
Table 4. Motor Lead Connection
0.2 0.3 0.4 0.5
808 770 726 664
935
808 770 726 664
935
900 750 650 580
620 900
0.6
562
846
562
846
520
860