Nordyne P3RD-042K - System Operation

Control Wire Leqend
Green - BJower ReJay
Red - Transformer
24V
Yellow- Cooling 1st
Stage
Brown - Heating 1st
Stage
Orange - Heating 2rid
Stage
4 Wire Heat/Cool Thermostat
SingleStageElectricHeat
---_YELLOW
---_GREEN
BROWN
ORANGE
2 Wire CoolingThermostat
---_-RED
YELLOW
GREEN
BROWN
Two Stage Electric Heat
I
Optional [_
Outdoor Thermostat
(Field Supplied)
---_-RED
---_-YELLOW
---_-GREEN
---_--BROWN
--ORANGE
Figure 10. Low Voltage Connections
C.
a positive means of preventing simultane-
ous operation of the heating and cooling
units. The thermostat is also equipped with
an ON-AUTO fan switch which allows the
home owner to operate the indoor blower
when 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 ther-
mostat instruction sheet for more detailed
information.
Refer to furnace installation instructions
for required connections and proper heat
anticipator setting when installing unit with
an external furnace.
if two stage heating is desired, an
optional outdoor thermostat may be
installed: Connect the thermostat to the
orange low voltage wire and the W terminal
on the indoor thermostat base (See Figure
10). See the thermostat instructions for
details on setting the outdoor thermostat.
4. ELECTRIC HEAT PACKAGE (OPTIONAL)
The air conditioner is shipped without an auxil-
iary electric heat kit installed. If electric heat is
desired, an accessory Heater Kit must be field
installed. See Specifications Sheet for available
kits and their applications.
Select the correct size heat package for the
installation.
Follow installation instructions provided with
each heater kit.
Installation is most easily accomplished
before making duct or electrical connec-
tions.
The blower must be set to high speed for
electric heat operation.
SYSTEM OPERATION
1. PRE-START CHECK LIST
The following check list should be observed prior
to starting the unit.
[] Is the unit level? It should be level or slightly
slanted toward the drain for proper conden-
sate drainage.