Start-Up Procedure - Nordyne R-410A User Manual And Installation Instructions

Control Wire Legend
Green - Blower Relay
Yellow - Cooling 1st
Brown - Heating 1st
Orange - Heating 2nd
Are all the wiring connections tight? Check
the condenser fan to make sure it turns
freely.
Is the overcurrent protection properly
sized?
Is the thermostat wired correctly? Is it
installed in a proper location?
2.

START-UP PROCEDURE

a. Set the system switch to the OFF posi-
tion.
b. Dial thermostat setting as high as it will
go.
c. Turn on power supply at the disconnect
switch.
d. Set the system switch to ON or COOL.
Set the temperature setting to below room
temperature. Verify that the indoor blower,
outdoor fan, and compressor are energized
and the cooling function starts.
e. Verify that the discharge air grilles are
adjusted and the system is balanced.
f. Verify that there are no air leaks in the duct
work.
10
4 Wire Heat/Cool Thermostat
Single Stage Electric Heat
Red - Transformer
24V
R
Stage
Y
Stage
G
Stage
W
Two Stage Electric Heat
R
Y
G
W
Optional
Outdoor Thermostat
(Field Supplied)
Figure 10. Low Voltage Connections
2 Wire Cooling Thermostat
RED
RED
R
YELLOW YELLOW
Y
GREEN
GREEN
BROWN
BROWN
ORANGE
RED
YELLOW
GREEN
BROWN
ORANGE
g. Verify that the condensate drain is properly
installed and that it functions correctly.
h. Dial the thermostat higher than room tem-
perature. The unit should stop.
i. If using a combination heating-cooling ther-
mostat, set to the HEAT position. Proceed
to check for correct furnace operation.
j. Verify that the furnace controls and burners
or heating elements operate correctly.
k. Instruct the owner on unit operation, fi lter
servicing, and proper thermostat opera-
tion.
Refrigerant Charging - Packaged Air Condition-
ers are fully charged with R410-A refrigerant at
the factory. The system refrigerant charge can be
checked and adjusted by removing the compres-
sor cover panel and attaching gauge lines which
have a "schrader" depression device present
to activate the valve. Draw a vacuum on gauge
lines to remove air before attaching them to the
service ports on the unit. Refrigerant charging
must be done by qualifi ed personnel familiar with
safe and environmentally responsible refrigerant
handling procedures.