Reznor Q6SD (3ph) Unit Installation Manual - Manual (Page 14)

14
REPLACEMENT PARTS
Replacement parts are available through all Nordyne
distributors. Please have the complete model and serial
number of the unit when ordering replacement parts.
ELECTRICAL:
Capacitors Relays
Compressors Temperature Limit Switches
Contactors Thermostats
Pressure Switches Transformers
MOTORS:
Blower Motor
Fan Motor
COMPONENTS:
Blower Assembly Fan Grille
Cabinet Panels Filter/Driers
Expansion Valves
NOTES:
• The unit must be charged while both fi rst and second
stages are operating.
• To achieve rated capacity and effi ciency the compressor
must be exposed to refrigerant for at least 24 hours
prior to running and then must be run for a minimum
of 12 hours.
• The refrigerant charging charts (Figures 12 - 14,
pages 20 & 21) are applicable to listed assemblies
of equipment and at listed airfl ows for the indoor coil.
Assemblies of indoor coils and outdoor units not listed
are not recommended.
Charging an R-410A Unit in AC Mode at Outdoor
Temperatures Above 65F.
1. With the system operating at steady-state, measure
the liquid refrigerant pressure in psig at the service
valve.
2. Measure the liquid refrigerant temperature in
Fahrenheit at the service valve.
3. For the temperature measured, determine the required
liquid refrigerant pressure from the appropriate
charging charts in Figures 12 - 14.
4. If the pressure measured in step 1 is greater than
the required liquid refrigerant pressure determined in
step 4, then there is too much charge in the system.
Remove refrigerant and repeat steps 1 through 3 until
the system is correctly charged.
5. If the pressure measured in step 1 is less than the
required liquid refrigerant pressure determined in
step 4, then there is too little charge in the system.
Add refrigerant and repeat steps 1 through 3 until the
system is correctly charged.
Charging an R-410A Unit in Heating Mode.
1. Evacuate the refrigerant system.
2. Weigh in the proper charge based on the charge
level noted on the rating plate. Unit charge MUST be
verifi ed in cooling season.
3. Verify the unit is operating properly as outlined in
System Heating (page 13).
WARNING:
Do not place combustible material on or against
the unit cabinet. Do not place combustible
materials, including gasoline and any other
fl ammable vapors and liquids, in the vicinity of
the unit.
CAUTION:
The unit should never be operated without a
fi lter in the return air system. Replace disposable
fi lters with the same type and size.
Proper maintenance is important to achieve optimum
performance from the heat pump. The ability to properly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills, contact your dealer for maintenance. Consult your
local dealer about the availability of maintenance contracts.
Routine maintenance should include the following:
• Inspect and clean or replace air fi lters at the beginning
of each heating and cooling season, or more frequently
if required.
• Inspect the condensate drain and outdoor coil at the
beginning of each cooling season. Remove any debris.
Clean the outdoor coil and louvers as necessary using
a mild detergent and water. Rinse thoroughly with water.
• Inspect the electrical connections for tightness at the
beginning of each heating and cooling season. Service
as necessary.
• The motors for the circulating air blower and the outdoor
fan are pre-lubricated at the factory. No further oiling
is required for the life of this product.
HEAT PUMP MAINTENANCE
WARNING:
To prevent electrical shock, personal injury, or
death, disconnect all electrical power to the unit
before performing any maintenance or service.
Unit may have more than one electrical supply.
CAUTION:
Use care when servicing the heat pump or
removing components. Personal injury can
result from sharp edges present in equipment
constructed with sheet metal