System Operation - Nordyne P5RF-X48K User Manual And Installation Instructions

Two Stage Electd¢ Heat
o_ao_ TI,er,,lostat
2 Wire Coo]inq Thermostat
Figure 10. Low Voltage Connections
SYSTEM OPERATION
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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.
Is the unit installed with the proper clear-
ances (See Figure 2)?
Is the wiring correct according to the wiring
diagram and electrical codes?
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2.
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?
STAR%UPPROCEDURE
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.
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, filter
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 qualified personnel familiar with
safe and environmentally responsible refrigerant
handling procedures.
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