Nortek Q8SF Series User manual

*Q8SF / PPH3SF SERIES 16 SEER / 12 EER / 8.2 HSPF
SINGLE PHASE, CONVERTIBLE PACKAGE HEAT PUMP - TWO-STAGE - R410A
USER’S MANUAL
IMPORTANT
• Under no circumstances should the appliance owner attempt to install and/or service this
equipment. Some local codes require licensed installation / service personnel for this type of
equipment. Improper service, adjustment, or maintenance may cause explosion, fire, electrical
shock or other hazardous conditions which may result in personal injury or property damage.
• Read these instructions thoroughly before using the equipment. Follow all precautions and
warnings contained within these instructions and on the unit.
• Improper installation, adjustment, alteration, service, or maintenance can cause personal
injury or property damage. Refer to this manual. For assistance or additional information,
consult a qualified installer or service agency.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

IMPORTANT SAFETY INFORMATION
Please read all instructions before servicing this equipment.
Pay attention to all safety warnings and any other special
notes highlighted in the manual. Safety markings are used
frequently throughout this manual to designate a degree or
level of seriousness and should not be ignored. WARNING
indicates a potentially hazardous situation that if not avoided,
could result in personal injury or death. CAUTION indicates a
potentially hazardous situation that if not avoided, may result
in minor or moderate injury or property damage.
ABOUT THE HEAT PUMP
Your heat pump is a unique, all weather comfort-control
appliance that will heat and cool your home year round and
provide energy saving comfort. It’s an unknown fact that heat
is always in the air, even when the outside temperature is
below freezing. The heat pump uses this basic law of physics
to provide energy saving heat during the winter months.
For example, If the outdoor temperature is 47° F (8° C),
your heat pump can deliver approximately 3.5 units of heat
energy per each unit of electrical energy used, as compared
to a maximum of only 1 unit of heat energy produced with
conventional heating systems.
During summer, the heat pump reverses the flow of the
heat-absorbing refrigerant to become an energy-efficient,
central air conditioner. Excess heat energy inside the home is
absorbed by the refrigerant and exhausted outside the home.
OPERATING INSTRUCTIONS
Please refer to the thermostat manufacturer’s User manual
for detailed programming instructions. To achieve maximum
effcieincies, this heat pump requires a 2-stage heat pump
thermostat. If auxillary heat is installed a 3-stage heat pump
is required. If the auxillary heat is staged, then a 4-stage heat
pump thermostat is required.
Cooling Operation
1. Set the thermostat’s system mode to COOL or AUTO and
change the fan mode to AUTO or ON. See Figure 1.
2. Set the temperature selector to the desired temperature
level. The outdoor fan, compressor, and blower motor will
all cycle on and off to maintain the indoor temperature at
the desired cooling level.
NOTE: If the temperature level is re-adjusted, or the
system mode is reset, the fan and compressor in the
outdoor unit may not start immediately. A protective
timer circuit holds the compressor and the outdoor fan
off for approximately three minutes following a previous
operation or the interruption of the main electrical power.
Heating Operation
1. Set the thermostat’s system mode to HEAT or AUTO and
change the fan mode to AUTO or ON. See Figure 1.
2. Set the temperature selector to the desired temperature
level. The compressor, fan, blower motor, and auxillary
heat (if installed) will cycle on and off to maintain the indoor
temperature at the desired heating level.
NOTE: If the temperature level is re-adjusted, or the
system mode is reset, the fan and compressor in the
outdoor unit may not start immediately. A protective timer
circuit holds the compressor and the outdoor fan off for
approximately three minutes following a previous operation
or the interruption of the main electrical power.
Emergency Heat
Heat pump thermostats should include a system mode
called EM HT or AUX HT, etc. This is a back-up heating
mode that should only be used if a problem is suspected
with compressor operation. With the mode set to EM HT,
etc., the compressor and outdoor fan will be locked off and
supplemental or auxillary heat (electric resistance heating)
will be used as a source of heat. Sustained use of electric
resistance heat in place of the heat pump may result in an
increase in electric utility costs.
Defrost Operation
During cold weather heating operation, the outdoor coil can
develop a coating of snow and/or ice. This is normal and
the unit will defrost itself. This unit features Hot Gas Bypass
Defrost that monitors ambient and coil temperatures to
regulate the defrost function accordingly.
At the beginning of the defrost cycle, both the
outdoor condenser fan and compressor will turn off.
After approximately 30 seconds, the compressor will turn
on and begin to heat the outdoor coil causing the ice and
snow to melt.
NOTE: While the ice and snow is melting, some steam may
rise from the outdoor unit as the warm coil causes the melting
frost to evaporate. When defrost is completed, the outdoor
fan motor will start, and the compressor will turn off again.
In approximately 30 seconds the compressor will start up
again and continue normal operation.
Operating the Heat Pump for Automatic
Cooling and Heating
1. Set the thermostat system mode to AUTO and the
thermostat fan mode to AUTO. See Figure 1.
2. Set the thermostat's temperature selector to the desired
heating and cooling temperature level(s). The outdoor unit
and the indoor blower will then cycle on and off in either
the heating or cooling mode of operation as required to
automatically maintain the indoor temperature within the
desired limits.
Figure 1. Typical Digital Thermostat
Fan
Mode
Temperature
Selector
System
Mode

Operating the Indoor Blower Continuously
The continuous indoor blower operation is typically used to
circulate the indoor air to equalize a temperature unbalance
due to a sun load, cooking, or fireplace operation.
Set the thermostat fan mode to ON (Figure 1). The indoor
blower starts immediately, and will run continually until the
fan mode is reset to AUTO.
The continuous indoor blower operation can be obtained with
the thermostat system mode set in any position, including
OFF.
Shutting the Heat Pump Off
Change the thermostat’s system mode to OFF and the fan
mode to AUTO. See Figure 1. NOTE: The system will not
operate, regardless of the temperature selector setting.
HEAT PUMP MAINTENANCE
CAUTION:
Shut off all electrical power to the unit before
performing any maintenance or service on the
system. Failure to comply may result in personal
injury or death.
Proper maintenance is most important to achieve the best
performance from the appliance and should be performed
by a qualified service technician at least once a year. Follow
the maintenance schedule and the instructions below for
years of safe, trouble free operation.
Regular Cleaning
• Clean or replace the indoor air filter at the start of each
heating and cooling season, when an accumulation of
dust and dirt is visible on the air filter, or more frquently
if a resrictive air filter is used.
• Remove any leaves and grass clippings from the outdoor
coil of the unit, being careful not to damage the aluminum
fins.
• Check for obstructions, such as twigs, sticks, etc.
TROUBLESHOOTING
If the unit fails to operate, check the following:
• The thermostat is properly set. See the operating
instructions section of this User Manual.
• The unit disconnect fuses are in good condition and the
electrical power to the unit is turned on.
WARRANTY INFORMATION
A warranty certificate with full details is included with the heat
pump. Carefully review these responsibilities with your dealer
or service company. The manufacturer will not be responsible
for any costs found necessary to correct problems due to
improper setup, improper installation, adjustments, improper
operating procedure on the part of the user, etc. Some
specific examples of service calls which are not included in
the limited warranty are:
• Correcting wiring problems in the electrical circuit supplying
or controlling the heat pump.
• Resetting circuit breakers or other switches.
• Adjusting or calibrating the thermostat.

IMPORTANT - This product has been designed and manufactured to meet ENERGY STAR criteria for
energy efficiency. However, proper refrigerant charge and proper air flow are critical to achieve rated
capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging
and air flow instructions. Failure to confirm proper charge and airflow may reduce energy efficiency and
shorten equipment life.
Specifications & illustrations subject to change without notice or incurring obligations (10/17).
O’Fallon, MO, © Nortek Global HVAC LLC 2017. All Rights Reserved.
10186230
(NEW)