user’s information manual
SINGLE PACKAGED
HEAT PUMP UNITS
664A
Sizes 024-060
Cancels: OM02-55
OM02-64
1/03
NOTE TO INSTALLER:
This manual should be left with the equipment
owner.
WARNING: Before performing recommended main-
tenance, be sure main power switch to unit is turned
off. Electrical shock could cause personal injury.
Model 664A Packaged Heat Pump
The following are typical conditions that add extra heat and/or
humidity to your home. Your heat pump will work longer to
keep your home comfortable under these conditions:
The word Emergency will display on your thermostat if the
mode button is selected for the EMERGENCY HEAT mode
setting. This indicates that the heat pump is off and the supple-
mental heating appliance is selected for operation.
•
•
•
•
Entrance doors are frequently opened and closed
Laundry appliances are being operated
A shower is running
The word AUX HEAT will be displayed under normal operation
when the second stage of heat is operating.
• Do not operate your unit in the heating mode when outdoor
temperatures are above 66°F unless you set your thermostat
to emergency heat mode.
More than the usual number of people are present in the
home
•
•
More than the normal number of electric lights are in use
Drapes are open on the sunny side of the home
During the heating season, switch to EMERGENCY HEAT if
the electricity to your outdoor unit is off for more than
30 minutes for any reason (i.e., power outage). Leave the switch
in the EMERGENCY HEAT position for an amount of time
equal to that during which the power was off. It is not nec-
essary to exceed 12 hours. If you cannot determine how long
the power has been off, leave the switch in the EMER-
GENCY HEAT position for 8 hours.
HEATING CYCLE
With the SYSTEM switch of your indoor thermostat set to
the HEAT position, the heat pump will operate in its heating
mode until room temperature is raised to the level you have
selected. Of course, the heating unit will have to operate for
longer periods to maintain a comfortable environment on colder
days and nights than on moderate ones.
PERFORMING ROUTINE MAINTENANCE
Defrost Cycle — When your heat pump is providing heat to
your home and the outdoor temperature drops below 45 de-
grees Fahrenheit, moisture may begin to freeze on the sur-
face of the outdoor coil. If allowed to build up, this ice would
impede airflow across the coil and reduce the amount of heat
absorbed from the outside air. So, to maintain energy-
efficient operation, your heat pump has an automatic defrost
cycle.
With the proper maintenance and care, your heat pump will
operate economically and dependably. Maintenance can be ac-
complished easily by referring to the following directions. How-
ever, before performing maintenance, consider these impor-
tant safety precautions:
• DISCONNECT ALL ELECTRICAL POWER TO THE HEAT
PUMP BEFORE REMOVING ACCESS PANELS TO PER-
FORM SERVICE OR MAINTENANCE. NOTE: THERE MAY
BE MORE TH AN ONE E LE CTRICAL DISCONNE CT
SWITCH.
The defrost cycle starts at a preset time interval of 30 min-
utes. Defrost will start at the preset time only if the ice is
sufficient to interfere with normal heating operation.
•
ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO
After the ice is melted from the outdoor coil, or after a maxi-
mum of 10 minutes in the Defrost mode, the unit will auto-
matically switch back to normal heating operation.
MINIMIZE SHARP EDGES IN THE CONSTRUCTION OF
YOUR UNIT, BE EXTREMELY CAREFUL WHEN HAN-
DLING PARTS OR REACHING INTO THE UNIT.
Do not be alarmed if steam or fog appears at the outdoor unit
during the defrost cycle. Water vapor from the melting ice
may condense into a mist in the cold outside air.
Emergency Heat — The EMERGENCY HEAT setting on your
thermostat refers to any supplementary heating appliance that
may be included in your home comfort system. Operation of
the EMERGENCY HEAT source may be required if heating
demands exceed the capacity of the heat pump, or if the heat
pump malfunctions.
CHECK THE AIR FILTER
A dirty air filter will cause excessive strain on the compres-
sor and blower motor. This can cause the components to over-
heat and automatically shut down. In the extreme, the com-
ponents will fail and need to be replaced. To avoid inefficient
or failed operation of your unit, CHECK THE FILTER(S) EV-
ERY 3 TO 4 WEEKS. Replace filter(s) when necessary, or clean
the filter(s) if you have the reusable type.
Disposable filters should be replaced by similar, new filters
of the same dimensions.
—3—
Reusable, permanent filters should be washed in a solution
of cold water and mild detergent, then rinsed and thoroughly
dried. THE FILTER MUST BE COMPLETELY DRY BE-
FORE BEING REINSTALLED. To avoid prolonged shut-
down of your unit while a filter is drying, you should have an
extra filter on hand. This would allow you to rotate between
the two with minimal downtime for your comfort system. Ex-
tra filters may be purchased from your dealer.
REGULAR DEALER MAINTENANCE
In addition to the routine maintenance that you perform, your
home comfort system should be inspected regularly by a prop-
erly trained service technician. The inspection (preferably
each year, but at least every other year) should include the
following:
•
Routine inspection of air filter(s). Replacement or cleaning
as required.
Inspection and cleaning of the blower wheel, housing,
•
The filter(s) and filter rack for a packaged system are sup-
•
plied and installed by the contractor or dealer. Typically, the
filter(s) and rack are located in the return-air duct in the unit
or behind the return-air grille(s). Have your dealer show you
the location of your filter(s) and the procedures for removal
and replacement.
and motor. Service should include proper lubrication of these
components.
•
Inspection and, if required, cleaning of indoor and outdoor
coils.
•
Inspection of the indoor coil drain pan, plus the drain line.
If you have any questions about the removal and/or cleaning
of your filter(s), contact your dealer for assistance.
Service should include cleaning if required.
•
A check of all electrical wiring and connections.
If grass clippings, leaves, shrubbery, and debris are kept away
from the unit, minimal care should be sufficient to keep the
system functioning properly. However, if the outdoor coil be-
comes dirty, use a brush or vacuum cleaner and soft brush
attachment to clean the exterior surface. If dirt is deep in the
coil, contact your dealer for service. The outdoor-fan motor
may have to be disconnected and the top panel removed to
gain access to the coil for thorough cleaning. Do not attempt
this yourself.
•
A check for secure physical connections of individual com-
ponents within units.
•
Operational check of the heat pump system to determine
actual working condition. Necessary repair and/or adjust-
ment should be performed at this time.
Your servicing dealer may offer an economical service con-
tract that covers seasonal inspections. Ask for further
details.
UNIT SUPPORT
WARRANTIES
A warranty is located at the back of this book. Be sure to read
the warranty carefully to determine the coverage for your unit.
Your packaged unit should be maintained at a level position.
If its support should shift or settle so that the unit is no longer
level, you should correct the condition. Relevel it promptly to
assure condensate drainage out of the unit. If you notice that
water or ice collects beneath the unit, arrange for it to be drained
away from the unit.
FOR THE RECORD
Record the model, product, and serial numbers of your new
equipment in the spaces provided below. This information,
along with the other ready-reference facts requested below,
will be necessary should you ever require information or
service.
BEFORE YOU REQUEST A SERVICE CALL
BEFORE YOU CALL FOR SERVICE, CHECK FOR THESE
EASILY SOLVED PROBLEMS:
Installation Data
•
Check the disconnect switches. Verify that circuit break-
Date Installed
ers are ON or that fuses have not blown.
Dealer Name
Address
City
•
Check for sufficient airflow. Check the air filter(s) for any
accumulations of dirt. Check for blocked return-air or supply-
air grilles. Be sure grilles are open and unobstructed.
•
Check the settings on your indoor thermostat. If you de-
State
Zip
sire cooling, see that the temperature control selector is set
below room temperature and the SYSTEM switch is on the
COOL or AUTO position. If you require warmth, be sure the
temperature control selector is set above room temperature
and the SYSTEM switch is at HEAT or AUTO. The FAN switch
should be set at ON for continuous blower operation or AUTO
if you wish the blower to function only while the unit is
operating.
Telephone
Packaged System
Outdoor Unit:
Product No.
Model No.
If your comfort system still fails to operate, contact your ser-
vicing dealer for troubleshooting and repairs. Specify your ap-
parent problem, and state the model and serial numbers of
your equipment. (You should have them recorded at right.)
With this information, your dealer may be able to offer help-
ful suggestions over the phone, or save valuable time through
knowledgeable preparation for the service call.
Serial No.
Heater, if applicable:
Part No.
Kilowatt Rating
Copyright 2003 Bryant Air Conditioning Company
CATALOG NO. 5366-403
—4—
|