Condensate Drain; Electrical Connections - Nordyne P3RD-042K User's Manual And Installation

Low Voltage
Figure 9. Power Entry
CONDENSATE DRAIN
A 3/4" condensate fitting extends out of the side
of the unit.The drain trap, shipped in the electrical
compartment, must be installed to prevent water
from collecting inside the unit.Thread the elbow
provided with the unit into the drain connection
until hand tight. Install the trap into the fitting and
seal the joint. Make sure it is level. Route the
condensate from the trap to a suitable drain. Any
connecting tubing or hose must have the outlet
below the trap level for proper drainage.
WARNING:
Turn off electrical power before servic-
ing controls. Severe electrical shock
may result unless power is turned off.
Unit must be installed in compliance
with the National Electrical Code (NEC)
and local codes.
ELECTRICAL CONNECTIONS
1. ELECTRICAL SERVICE
High Voltage
a. Install a branch circuit disconnect of ad-
equate size per NEC. Locate the disconnect
within sight of the unit.
b. Extend leads through power wiring hole
provided. Connect L1 and L2 directly to the
contactor. (See Figure 9).
c. Ground the air conditioning unit using the
green grounding screw provided in the
control panel.
Low Voltage
a. Route 24vcontrol wires through the sealing
grommet near the power entrance.
b. Connect the control wires to the leads in
the low voltage area. (See Figure 10).
2. OVERCURRENT PROTECTION
In general, the best fuse or breaker for any air
conditioner is the smallest size that will permit
the equipment to run under normal use and
service without nuisance trips. Such a device,
sized properly, gives maximum equipment
protection. The principal reason for specifying
a time delay type is to prevent nuisance trips
when the unit starts.
In the event that a fuse does blow or a breaker
trips, always determine the reason. Do not arbi-
trarily put in a larger fuse or breaker and do not,
in any case, exceed the maximum size listed on
the data label of the unit.
3. LOCATING THE THERMOSTAT
Locate the thermostat away from drafts and
slamming doors and place it where there is a free
flow of air. Mount on an inside wall approximately
five feet from the floor.
Do not locate near a lamp, kitchen range, direct
sunlight, or in line with air flow from supply
registers.
a.
Connect Cooling Thermostat: The cool-
ing thermostat available for use with this
system is equipped with a selector switch.
To shut down the air conditioner, set the
selector switch to the OFF position. Con-
nect the red and yellow wires from the unit
to the R and Y terminals respectively on
the thermostat subbase. Connect the green
wire to the yellow wire at the unit. See the
instruction sheet packed with the thermostat
for detailed methods of mounting.
Note: The cooling-only thermostat must be
connected to an interlock switch to prevent
simultaneous operation of the furnace and
the air conditioner. (See Figure 1, Page 2.)
b. Connect the Heat-CooIThermostat: The
heat-cool thermostat is equipped with a
system H EAT-COOL switch, which provides