50ZPA
Baset 13 SEER Single---Packaged Air Conditioner System
With R---22 Refrigerant Single and Three Phase
2 to 5 Nominal Tons (Sizes 024---060)
Owner’s Information Manual
A05194
Fig. 1 -- Unit 50ZPA
NOTE TO EQUIPMENT OWNER:
For your convenience, please record the model and serial numbers of your new equipment in the spaces
provided. This information, along with the installation data and dealer contact information, will be helpful
should your system require maintenance or service.
UNIT INFORMATION
INSTALLATION INFORMATION
Model # _____________________________________
Serial # ______________________________________
Date Installed ________________________________
DEALERSHIP CONTACT INFORMATION
Company Name_______________________________
Address______________________________________
_____________________________________________
Phone Number _______________________________
Technician Name _____________________________
_____________________________________________
ACCESSORIES (List type and model #)
_____________________________________________
_____________________________________________
_____________________________________________
NOTE TO INSTALLER:
This manual must be left with the equipment owner.
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REGULAR DEALER MAINTENANCE
!
CAUTION
In addition to the type of routine maintenance you might be willing
to perform, your unit should be inspected regularly by a properly
trained service technician. An inspection (preferably each year, but
at least every other year) should include the following:
UNIT OPERATION HAZARD
Failure to follow this caution may result in property damage.
1. Inspection and, if required, cleaning of the indoor coil
condensate drain.
Never operate your unit without filters in place. An
accumulation of dust and lint on internal parts of your unit can
cause loss of efficiency.
2. Inspection and, if required, cleaning of the evaporator drain
pan.
3. Inspection and cleaning of blower wheelhousing andmotor.
Fans and Fan Motors
4. Inspection of all supply--air and return--air ducts for leaks,
obstructions, and insulation integrity. Any problems found
should be resolved at this time.
Periodically check the condition of fan wheels and housings and
fan--motor shaft bearings. No lubrication of condenser--or
evaporator--fan bearings or motors is required or recommended.
5. Inspectionof theunit baseto ensurethat nocracks, gaps,etc.,
exist which may cause a hazardous condition.
Indoor and Outdoor Coils
Cleaning of the coils should only be done by qualified service per-
sonnel. Contact your dealer for the required annual maintenance.
6. Inspection of the unit casing for signs of deterioration.
7. Inspection of all electrical wiring and components to ensure
proper connection.
Condensate Drain
8. Inspection for leaksin therefrigerant circuit. Pressure--check
to determine appropriate refrigerant charge.
The drain pan and condensate drain line should be checked and
cleaned at the same time the cooling coils are checked by your deal-
er.
9. Inspection of compressor oil level by service person to
ensure proper oil level is maintained in the compressor when
it is installed and running.
Compressor
Allcompressorsarefactoryshippedwitha normalchargeof thecor-
rect type of refrigeration grade oil in them and should rarely require
additional oil.
10. Operational check of the unit to determine working
conditions.Repairoradjustmentshouldbe madeat thistime.
Your servicing dealer may offer an economical service contract that
covers seasonal inspections. Ask for further details.
Condenser Fan
Complete service instructions can be found in the unit Installation,
Start--up and Service Instructions.
!
WARNING
Warranty Certificate
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Your50ZPAunithasalimitedwarranty.Besuretoread thewarranty
carefully to determine the coverage for your unit.
Failure to follow this warning could result in personal injury,
death or property damage.
Before you call for service...
Do not insert sticks, screwdrivers, or any other object into
revolving fan blades.
...check for several easily--solved problems.
If insufficient heating or cooling is suspected:
( ) Check for sufficient airflow.
The fan must be kept free of all obstructions to ensure proper cool-
ing. Contact your dealer for any required service.
( ) Check the air filter for dirt.
Electrical Controls and Wiring
( ) Check for blocked return--air or supply--air grilles. Be sure they
are open and unobstructed. If these checks do not reveal the cause,
call your servicing dealer.
Electrical controlsare difficultto checkwithout properinstrumenta-
tion. If there are any discrepancies in the operating cycle, contact
your local dealer and request service.
If your unit is not operating at all, check the following list for
easy solutions:
Refrigerant Circuit
Therefrigerantcircuitisdifficulttocheckforleakswithout theprop-
er equipment. If inadequate cooling is suspected, contact your local
dealer for service.
( ) Check to be sure that your thermostat temperature selector is set
below the indoor temperature during thecooling season.Be surethe
SYSTEM switch or MODE control is in the COOL position and
not in the OFF position.
!
(
) If your unit still fails to operate, call your servicing dealer for
WARNING
troubleshooting and repairs. Specify the model and serial numbers
of your unit. (Record them in this manual in the space provided.) If
the dealer knows exactly which unit you have, he may be able to
offer suggestions over the phone, or save valuable time through
knowledgeable preparation for the service call.
EXPLOSION AND ENVIRONMENTAL HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
System under pressure. Relieve pressure and recover all
refrigerant before system repair or final unit disposal. Use all
service ports and open all flow--control devices, including
solenoid valves.
In Case of Trouble
If you perform the steps above and unit performance is still unsatis-
factory, shut off the unit and call your dealer.
Unit Panels
Dealer’s Name
Telephone
After performing any maintenance or service on the unit, be sure all
panels are fastened securely in place to prevent rain from entering
unit cabinet and to prevent disruption of the correct unit airflow pat-
tern.
Unit Model
Unit Serial Number
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HEATING & COOLING
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or classified section of your local telephone directory under the
“Heating Equipment” or “Air Conditioning Contractors & Systems” heading for dealer listing by brand name.
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part.
Copyright 2008 Carrier Corporation
Printed in the U.S.A.
Edition Date: 02/08
Catalog No: OM50ZPA---01
Manufacturer reserves the right to change, at any time, specifications and design without notice and without obligation.
R e p l a ce s: OM 5 0 --- 4 0
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