Reznor Q6SP User Manual

Q6SP-090 (7 1/2) & -120 (10 Ton) Series

USER’S MANUAL

Single Package Heat Pump Rooftop Unit

IMPORTANT! Please read all information in this manual thoroughly and become familiar with the capabilities and use

of your appliance before attempting to operate or maintain this unit. 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. Keep this literature where you have easy
access to it in the future. If a problem occurs, check the instructions and follow recommendations given. If these
suggestions don’t eliminate your problem, call your servicing contractor. Do not attempt to service this unit yourself!

Q6SP-090 Shown

!

WARNING:

• 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,
fi re, 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 qualifi ed installer or service agency.

• Do not store or use gasoline or other fl ammable vapors and liquids in the vicinity of this or
any other appliance.

DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

ABOUT THE HEAT PUMP

Your heat pump is a unique, all weather comfort-control
appliance that will heat and cool your building 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.

In colder temperatures, the heat pump performs like
an air conditioner run in reverse. Available heat energy
outside the building is absorbed by the refrigerant and
exhausted inside. This effi cient process means you only
pay for “moving” the heat from the outdoors to the indoor
area. You do not pay to generate the heat, as is the case
with more traditional furnace designs.

During summer, the heat pump reverses the fl ow of the
heat-absorbing refrigerant to become an energy-effi cient,
central air conditioner. Excess heat energy inside the home
is absorbed by the refrigerant and exhausted outside the
building.

IMPORTANT SAFETY INFORMATION

WARNING:

To avoid possible equipment damage, fi re, or
personal injury, the following instructions must
be observed regarding unit maintenance and
operational procedures.

The Q6SP Series package heat pump rooftop unit has
been designed and built to provide many years of safe
and dependable comfort, providing it is properly installed
and maintained. With regular maintenance, this unit will
operate satisfactorily year after year. Abuse, improper
use, and/or poor maintenance can shorten the life of the
appliance and create unsafe hazards. A regular service
and maintenance schedule should be established to
ensure effi cient and safe operation of the unit. See System
Maintenance on page 3.

• To achieve optimum performance and minimize
equipment failure, it is recommended that periodic
maintenance be performed on this unit. The ability
to properly perform maintenance on this equipment
requires certain mechanical skills and tools.

• The area around the unit and the vicinity of any other
appliances must be kept clear and free of combustible
materials, gasoline, and other fl ammable vapors and
liquids. Do not store or use fl ammable items such as
paint, varnish, or strippers in the vicinity of the unit.

• Do not use the area around the unit as a storage area.
This area must be kept clean and clear of loose or

exposed insulation materials. Examine the unit’s area
when it is installed or when insulation is added, since
some insulation materials may be combustible.

• Do not use this appliance if any part has been under
water. Immediately call a qualifi ed service technician
to inspect the unit and to replace any part of the
electrical control system that has been under water.

• Familiarize yourself with the controls that shut off the
electrical power to the unit. If the unit is to be shut down
for an extended period of time, turn off the electrical
power. For your safety always turn off the electrical
power before performing service or maintenance on
the furnace.

• Do not block or obstruct air openings on the unit or air
openings supplying the area where it is installed.

• The duct connections must be physically sound
and sealed to the unit’s casing. The return air and
circulating air ductwork must not be connected to any
other heat producing device such as a fi replace insert,
stove, etc. Improperly installed ductwork may result
in fi re, explosion, personal injury, carbon monoxide
poisoning, or property damage.

OPERATING INSTRUCTIONS

Thermostat styles vary. Some models may not include
the AUTO mode and others will have the AUTO in place
of the HEAT and COOL. Others may include all three.
Some thermostats may have anti-short cycle protection
built in causing a delay in one or both stages. A protective
timer circuit may hold the compressor(s) off for up to 5
minutes following a previous operation or an interruption
of the main power. Please refer to the thermostat’s User
Manual for detailed programming instructions.

The thermostat should be mounted about 5 feet above the
fl oor on an inside wall and not on an outside wall or other
location where its operation may be adversely affected by
radiant heat from fi replaces, sunlight, or lighting fi xtures,
and convective heat from warm air registers or electrical
appliances.

Cooling Operation

1. Set the thermostat system mode to COOL and the

thermostat fan mode to AUTO (See Figure 1, page 3).

2. Set the thermostat temperature selector to the desired

temperature level. The outdoor fans, compressors,
and indoor blower will all cycle on and off to maintain
the indoor temperature at the desired cooling level.
NOTE: This unit is equipped with a fi ve minute anti­short cycle timer (ASCT) built in to the defrost control
board for Stage 1 Heat or Cool. If the thermostat tem­perature level is re-adjusted, or if the system mode is
changed, the compressor may not start immediately.
Stage 2 Heat/Cool has no ASCT protection and can
operate immediately upon a call from the thermostat.

2