Reznor Q6SP Unit Installation Manual - Manual (Page 13)

13
as necessary using a mild detergent and water. Rinse
thoroughly with water.
Electrical
Inspect the electrical connections for tightness at the
beginning of each heating and cooling season. Service
as necessary.
Motor Lubrication
WarnInG:
lubrication of the motors in this unit is not
required. Do not lubricate any motor in this
product.
The motors for the circulating air blower and outdoor
fans, are pre-lubricated at the factory. No further oiling is
required for the life of this product.
refrigerant charging
WarnInG:
the units are shipped fully charged and ready
for installation. When a system is installed
according to these instructions, no refrigerant
charging is required. If repairs make it necessary
for evacuation and charging, it should only be
done by qualified, trained personnel thoroughly
familiar with this equipment. some local codes
require licensed installation/service personnel
to service this type of equipment. under no
circumstances should the owner attempt to
install and/or service this equipment. Failure
to comply with this warning could result in
property damage, personal injury, or death.
The system refrigerant charge can be checked and
adjusted through the service ports provided on compressor
suction and liquid lines. Use only gauge lines which
have a “Schrader” depression device present to actuate
coMPonEnt FunctIons
High Pressure switch (HPs) - Prevents compressors from
operating at elevated pressures. High pressure switches
are located on both compressor hot gas lines and are
fitted with Schrader cores. The switch is non-adjustable
set to open at 650 PSIG and must be manually reset.
low Pressure switch (lPs) - Prevents compressors from
operating at sufficiently low pressures due loss of charge.
Low pressure switches are located on both compressor
return gas lines and are fitted with Schrader cores. The
switch is non-adjustable set to open at 5 PSIG and close
at 20 PSIG.
Freezestat - Prevents evaporator coils from freeze-ups due
to lack of airflow or below normal return air temperatures.
The switch is a non-adjustable, sealed, bi-metal sensor
set to open at 28° F and closes at 57° F.
over-temperature limit control - The over-temperature
limit control acts to prevent the air temperature leaving the
unit from exceeding the maximum outlet air temperature.
If the limit opens, electric heat will shut off. Provide w/
electric heat kits.
Defrost control Board - This control includes - 5 minute
anti-short cycle timer protection for Stage 1 Heat/Cool,
defrost time interval selection, and reversing valve, outdoor
fan, and auxiliary heat operation during defrost control.
See Operating Sequence (page 11).
Defrost temperature sensor - Switches are located
on the hairpin end of both outdoor coils. The switch is a
non-adjustable, sealed, bi-metal sensor set to open at
68° F and closes at 30° F. When closed, compressor run
time is accumulated and initiates coil defrost dependent
on time interval selected.
Heat Pump relay (HPr) - The heat pump relay is located
to the left side of the unit’s main control panel. It is required
for proper operation of an economizer (optional) in the
heat pump Heating mode, if installed. If installing an
economizer in this unit, refer to the setup procedures in
the Economizer Installation Instructions.
Blower Isolation relay - The isolation relay is located on
the right of the main control panel, near the transformer.
It is required when using an electric heat kit to prevent
a return signal to the thermostat when a W1 or W2 call
for heat is made.
rEPlacEMEnt Parts
Replacement parts are available through all NORDYNE
distributors. When ordering, remember to have the
complete Model and Serial number of the unit.
Electrical
Transformers Contactors
Temperature Limit
Switches
Thermostats Capacitors Pressure Switches
Relays Defrost Boards
Motors
Fan Motor Blower Motor Compressors
components
Expansion Valves Cabinet Panels Filter Driers
Blower Assembly Fan Grille Filters
Gaskets Reversing Valves Hail Guards
the valve. Draw a vacuum on the gauge lines to remove
air or moisture 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. Refer to
charging instructions on page 26 and Figures 13 - 14
(page 27) or the Unit Rating Plate for proper amount of
charge.