Carrier 48TM004 014 User Manual

48TF004-014  
48TM004-014  
Single-Package Rooftop Heating/  
Cooling Units  
User’s Information Manual  
NOTE TO INSTALLER  
TO LIGHT UNIT  
This manual should be left with the equipment owner.  
1. Do not turn off the electrical power to unit without  
first turning off the gas supply.  
2. Before attempting to start the gas heating section, fa-  
miliarize yourself with all the procedures that must be  
followed.  
WARNING: If the information in this manual is  
not followed exactly, a fire or explosion may  
result causing property damage, personal  
injury or loss of life.  
3. Never attempt to manually light the main burners on  
unit with a match, lighter, or any other flame. If the  
electric sparking device fails to light the main burners,  
refer to the following shutdown procedures, then call  
your dealer as soon as possible.  
If you do not follow these instructions exactly, a fire or  
explosion may result. Property damage, injury, or loss of  
life could occur.  
— Do not store or use gasoline or other flam-  
mable vapors and liquids in the vicinity of  
this or any other appliance.  
— WHAT TO DO IF YOU SMELL GAS  
• Do not try to light any appliance.  
• Do not touch any electrical switch; do  
not use any phone in your building.  
• Immediately call your gas supplier from  
a neighbor’s phone. Follow the gas sup-  
plier’s instructions.  
• If you cannot reach your gas supplier,  
call the fire department.  
See Fig. 1A and 1B for location of gas valve. Refer to Fig. 2  
while proceeding with the following steps.  
Step 1 — Set room thermostat to the lowest temperature  
setting and set SYSTEM switch to HEAT or AUTO. position.  
Step 2 — Close the manual gas valve.  
— Installation and service must be per-  
formed by a qualified installer, service  
agency or the gas supplier.  
Step 3 — Turn off the electrical supply to the unit and  
install lockout tag.  
Step 4 — Remove the burner access panel.  
Step 5 — Move the control on the gas valve to the OFF  
position and wait 5 minutes.  
Improper installation, adjustment, alteration,  
service or maintenance can cause injury or  
property damage. Refer to this manual. For  
assistance or additional information consult a  
qualified installer, service agency, or the gas  
supplier.  
Step 6 — Move control on gas valve to ON position.  
Step 7 — Replace the burner access panel.  
Step 8 — Turn on the electrical supply to unit.  
Step 9 — Open the manual gas valve.  
Step 10 — Set room thermostat selector slightly above  
room temperature to start unit. The induced-draft combustion  
air fan will start. Main gas valve will open and main burners  
should ignite within 5 seconds. If the burners do not light, there  
is a 22-second delay before another 5-second try. If the burner  
still does not light, the time delay is repeated. If the burner does  
not light within 15 minutes, there is a lockout. If burners still do  
not light, call for service.  
Before performing recommended maintenance, be sure  
main power switch to unit is turned off and lockout tag is  
installed. Electrical shock could cause personal injury.  
Your rooftop combination heating/cooling unit is equipped  
with an automatic direct spark ignition and induced draft com-  
bustion blower.  
Step 11 — Set the temperature selector on room thermostat  
to desired setting.  
Do not attempt to light by hand; personal injury may result.  
If the main burners fail to light, or the blower fails to come  
on, shut down gas heating section and call your dealer for  
service. Failure to follow these requirements could result in  
serious personal injury.  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
PC 111 Catalog No. 534-80104 Printed in U.S.A. Form 48T-1SO Pg 1 502 3-02 Replaces: 48TF-2SO  
Book 1  
4
Tab 1a 6a  
MAIN  
ON  
OFF  
LOCK-OUT  
G
TA  
STEP 1  
STEP 3  
STEP 2  
TWO-STAGE VALVE  
ONE-STAGE VALVE  
STEP 4  
ONE STAGE  
TWO STAGE  
48TFD,TMD005-009  
48TFE,TME004-007  
48TFF,TMF004-006 (single phase)  
48TFG,TMG005,006  
48TFH,TMH004-006  
48TFK,TMK004-006  
48TFL,TML005,006  
48TFF,TMF004-006 (3 phase)  
48TFD,TMD012, 014  
48TFE,TME008-014  
48TFF,TMF007-014  
ONE-STAGE VALVE  
TWO-STAGE VALVE  
48TFM,TMM004-006  
48TFN,TMN004-006  
STEP 5  
ONE STAGE  
TWO STAGE  
48TFD,TMD005-009  
48TFE,TME004-007  
48TFF,TMF004-006 (single phase)  
48TFG,TMG005,006  
48TFH,TMH004-006  
48TFK,TMK004-006  
48TFL,TML005,006  
48TFM,TMM004-006  
48TFN,TMN004-006  
48TFF,TMF004-006 (3 phase)  
48TFD,TMD012, 014  
48TFE,TME008-014  
48TFF,TMF007-014  
STEP 7  
STEP 6  
STEP 9  
STEP 10  
STEP 8  
Fig. 2 — To Light Unit  
502  
3
MAIN  
ON  
OFF  
LOCK-OUT  
STEP 1  
G
TA  
STEP 2  
STEP 3  
TWO-STAGE VALVE  
ONE-STAGE VALVE  
ONE STAGE  
TWO STAGE  
48TFD,TMD005-009  
48TFE,TME004-007  
48TFF,TMF004-006 (single phase)  
48TFG,TMG005,006  
48TFH,TMH004-006  
48TFK,TMK004-006  
48TFL,TML005,006  
48TFM,TMM004-006  
48TFN,TMN004-006  
48TFF,TMF004-006 (3 phase)  
48TFD,TMD012, 014  
48TFE,TME008-014  
STEP 4  
48TFF,TMF007-014  
STEP 5  
STEP 6  
STEP 7  
Fig. 3 — To Shut Unit Off  
502  
4
Air Filter(s) — Air filter(s) should be checked at least ev-  
ery 3 or 4 weeks and changed or cleaned when necessary.  
Table 1 indicates the correct filter size for your unit. See Fig. 4  
for filter access door location.  
To replace or inspect filters:  
1. Lift up and remove filter access panel.  
2. While holding filter, tilt upper filter rack.  
3. Remove filters by pulling up and out toward you from the  
track.  
4. Inspect or replace filters.  
5. Return filters to filter track. Note direction of airflow  
arrows on filter frame.  
6. Replace filter access panel.  
Heat Exchanger — To ensure dependable and efficient  
heating operation, the heat exchanger should be checked by a  
qualified maintenance person before each heating season, and  
cleaned when necessary. This checkout should not be attempt-  
ed by anyone not having the required expertise and equipment  
to do the job properly. Checking and/or cleaning the heat  
exchanger involves removing the gas controls assembly and  
the flue collector box cover and, when completed, reinstalling  
the gas controls assembly for proper operation. Also, the flue  
collector box cover must be replaced correctly so that a proper  
seal is maintained. Contact your dealer for the required period-  
ic maintenance.  
Fans, Belts and Fan Motor — Periodically check the  
condition of the fan wheels and housings, belt tension and fan  
motor shaft bearings. No lubrication of condenser or evapora-  
tor fan bearings or motors is required or recommended.  
If you have difficulty in locating your air filter, or if you  
have questions concerning proper filter maintenance, contact  
your dealer for instructions. When replacing your unit filters,  
always use the same size and type of filter that was originally  
supplied by the installer.  
Evaporator and Condenser Coils — Cleaning of the  
coils should be done by qualified service personnel. Contact  
your dealer for the required annual maintenance.  
Units with outdoor air capability have a cleanable filter for  
the outdoor air. This filter should be checked annually and  
cleaned as necessary with steam or hot water and a mild deter-  
gent. Do not use throwaway filters in place of cleanable filters.  
Condensate Drain — The drain pan and condensate  
drain line should be checked and cleaned at the same time the  
cooling coils are checked by your dealer.  
Compressor — All compressors are factory supplied with  
a normal charge of the correct type refrigeration-grade oil in  
them and should not require additional oil.  
Never operate your unit without filters in place. Failure to  
heed this warning may result in damage to the blower  
motor and/or compressor. An accumulation of dust and lint  
on internal parts of your unit can cause loss of efficiency  
and, in some cases, fire.  
Condenser Fan  
Do not poke sticks, screwdrivers, or any other object into  
revolving fan blades. Severe bodily injury may result.  
Table 1 — Indoor-Air Filter Data  
The fan must be kept free of all obstructions to ensure  
proper cooling. Contact your dealer for any required service.  
INDOOR-AIR FILTERS  
UNIT SIZE  
(Throwaway Fiberglass)  
48TF,TM  
Quantity  
Size (in.)  
16 x 25 x 2  
16 x 20 x 2  
20 x 20 x 2  
Electrical Controls and Wiring — Electrical controls  
are difficult to check without proper instrumentation; therefore,  
if there are any discrepancies in the operating cycle, contact  
your dealer and request service.  
004-007  
008, 009  
012, 014  
2
4
4
NOTE: Replacement filters should be UL (UnderwritersLaborato-  
ries) certified or equivalent.  
Refrigerant Circuit — The refrigerant circuit is difficult  
to check for leaks without the proper equipment; therefore, if  
inadequate cooling is suspected, contact your local dealer for  
service.  
FILTER ACCESS PANEL  
Sizes 004-007  
Sizes 008-014  
Fig. 4 — Typical Filter Access Panel Location  
5
Combustion Area and Vent System — The com-  
bustion area and vent system should be visually inspected  
before each heating season. The normal accumulation of dirt,  
soot, rust, and scale can result in loss of efficiency and improp-  
er performance if allowed to build up.  
Unit Panels — After performing any maintenance or  
service on the unit, be sure all panels are securely fastened in  
place to prevent rain from entering unit cabinet and to prevent  
disruption of the correct unit airflow pattern.  
REGULAR DEALER MAINTENANCE  
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:  
1. Inspection of all flue product passages — including the  
burner, heat exchanger, and flue collector box.  
If your unit makes an unusual or especially loud noises  
during heating, shut down the heating section and call your  
dealer.  
See Fig. 1A, 1B and 5 and proceed as follows to inspect the  
combustion area and power-venting system of your unit.  
1. Turn off gas supply to your unit.  
2. Turn off electrical power to your unit.  
3. Remove burner access panel.  
2. Inspection of all combustion- and ventilation-air passages  
and openings.  
3. Close inspection of all gas pipes leading to and inside  
your unit.  
4. Using a flashlight, carefully inspect the burner areas for  
dirt, soot, or scale.  
4. Inspection, and if required, cleaning of the condenser and  
evaporator coils.  
5. Inspection, and if required, cleaning of the condensate  
drain pan and trap.  
6. Inspection of all supply- and return-air ducts for leaks,  
obstructions, and insulation integrity. Any problems  
found should be resolved at the time of inspection.  
7. Inspection of the unit base for cracks, gaps, etc., which  
may cause a hazardous condition.  
8. Inspection of the unit casing for signs of deterioration.  
If dirt, soot, rust, or scale accumulations are found, call  
your dealer and do not operate your heating section.  
5. When you have completed your inspection, follow the  
start-up procedures in this manual to restore your unit to  
operation.  
6. Observe unit heating operation.  
9. Inspection of all electrical wiring and components to en-  
sure proper connection.  
10. Inspection for leaks in the refrigerant circuit. Pressure-  
check to determine appropriate refrigerant charge.  
11. Inspection and cleaning of fan wheels and housings,  
belt tension, and fan motor, shaft bearings, and pulley  
alignment.  
12. Operational check of the unit to determine working con-  
ditions. Repair or adjustment should be made at the time  
of inspection.  
Components in heat section may be hot after unit has been  
started up. When observing flame, be careful not to get to  
close to or touch heating components. Serious personal  
injury may result.  
Watch the burner flame to see if it is bright blue. If you  
observe a suspected malfunction or that the burner flame  
is not bright blue, call your dealer.  
7. Replace burner access panel.  
Your servicing dealer may offer an economical service con-  
tract that covers seasonal inspections. Ask for further details.  
Complete Service Instructions can be found in the unit  
Installation, Start-Up and Service Instructions.  
INDUCED-DRAFT  
MOTOR  
GAS VALVE  
Fig. 5 — Typical Heat Section Detail  
(Size 004-007 Shown)  
6
NOTE: Before proceeding with the next check, turn OFF the  
electrical power supply to the unit. Remove the control access  
door.  
BEFORE YOU CALL FOR SERVICE, CHECK  
FOR PROBLEMS THAT CAN BE  
EASILY SOLVED  
(
) During the heating season, check the control dial on the  
If insufficient heating or cooling is suspected:  
gas valve. Is it in the ON position? If it is not, be sure it has not  
been turned off for safety reasons. If no safety hazards are  
present, follow the start-up procedures in this manual.  
(
) Check for sufficient airflow. Check the air filter for dirt.  
Check for blocked return- or supply-air grilles. Be sure they  
are open and unobstructed. If these checks do not reveal the  
cause, call your servicing dealer.  
( ) If your unit still fails to operate, call your servicing dealer  
for 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.  
If your unit is not operating at all, check the following list  
for easy solutions:  
(
) Check to be sure that your thermostat temperature selector  
is set above the indoor temperature during the heating season,  
or below the indoor temperature during the cooling season. Be  
sure the SYSTEM switch in the proper HEAT, COOL or  
AUTO. position and not in the OFF position.  
IN CASE OF TROUBLE  
( ) Is the electrical supply switch ON? Are any fuses blown,  
or has the circuit breaker tripped?  
If, after performing the above, unit performance is unsatis-  
factory, shut off the unit and call your dealer.  
( ) During the heating season, check the external manual shut-  
off valve. Is this lever parallel with the pipe, indicating that the  
valve is open? Or is the lever at a right angle, indicating that  
the valve is closed? If closed, has the gas been shut off for  
safety reasons? Otherwise, you may open the valve and follow  
the start-up procedures listed in this manual.  
Dealer’s Name _____________________________________  
Telephone No. _____________________________________  
Unit Model ________________________________________  
7
CARRIER CORPORATION  
®
IF YOUR UNIT DOES NOT WORK, FOLLOW THESE STEPS IN ORDER:  
FIRST: Contact the installer. You may find his name on the product or in your  
Homeowner's Packet. If his name is not known, call your builder if  
yours is a new residence.  
SECOND: Contact the nearest CARRIER distributor. (See telephone yellow pages.)  
THIRD: Contact:  
CARRIER CORPORATION  
Consumer Relations Department  
P.O. Box 4808  
Syracuse, New York 13221  
Phone: 1-800-CARRIER (227-7437)  
Model No.  
Unit Serial No.  
Date of Installation  
Name of Owner  
Installed by  
Address of Installation  
Outdoor Cooling or Heating-Cooling Product  
(Units Smaller Than 185,000-Btuh Cooling Capacity)  
Limited Warranty  
LIMITATIONS OF WARRANTIESALL IMPLIED WARRANTIES (INCLUDING  
IMPLIED WARRANTIES OF MERCHANTABILITY) ARE HEREBY LIMITED IN  
DURATION TO THE PERIOD FOR WHICH THE LIMITED WARRANTY IS GIVEN.  
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED  
WARRANTY LASTS, SO THE ABOVE MAY NOT APPLY TO YOU. THE  
ONE-YEAR WARRANTYThis CARRIER CORPORATION (herein after referred  
to as COMPANY) product is warranted to be free from defects in material and  
workmanship under normal use and maintenance for a period of one year from  
the date of original installation whether or not actual use begins on that date. A  
new or remanufactured part, at the COMPANY'S sole option, to replace any EXPRESSED WARRANTIES MADE IN THIS WARRANTY ARE EXCLUSIVE AND  
MAY NOT BE ALTERED, ENLARGED, OR CHANGED BY ANY DISTRIBUTOR,  
DEALER, OR OTHER PERSON WHATSOEVER.  
defective part will be provided without charge for the part itself; PROVIDED the  
defective part is returned to our distributor through a qualified servicing dealer.  
The replacement part assumes the unused portion of the warranty.  
ALL WORK UNDER THE TERMS OF THIS WARRANTY SHALL BE PERFORMED  
DURING NORMAL WORKING HOURS. ALL REPLACEMENT PARTS, WHETHER  
NEW OR REMANUFACTURED, ASSUME AS THEIR WARRANTY PERIOD ONLY  
THE REMAINING TIME PERIOD OF THIS WARRANTY.  
THIS WARRANTY DOES NOT INCLUDE LABOR OR OTHER COSTS incurred  
for diagnosing, repairing, removing, installing, shipping, servicing or handling of  
either defective parts or replacement parts or complete unit. Such costs may be  
covered by a separate warranty provided by the installer.  
THE COMPANY WILL NOT BE RESPONSIBLE FOR:  
1. Normal maintenance as outlined in the installation and servicing instructions or  
owner's manual including coil cleaning, filter cleaning and/or replacement and  
lubrication.  
EXTENDED 4-YEAR WARRANTY ON COMPRESSOR ONLY During the  
second through fifth years after the date of original installation, the COMPANY  
further warrants the compressor against defects in material or workmanship under  
normal use and maintenance. A new or remanufactured compressor, at the  
COMPANY'S sole option, will be provided under the same conditions as stated in  
the ONE-YEAR WARRANTY.  
2. Damage or repairs required as a consequence of faulty installation, misapplication,  
abuse, improper servicing, unauthorized alteration or improper operation.  
3. Failure to start due to voltage conditions, blown fuses, open circuit breakers or  
other damages due to the inadequacy or interruption of electrical service.  
EXTENDED 4-YEAR WARRANTY ON GAS-FIRED HEAT EXCHANGER  
ONLYDuring the second through fifth years after the date of original installation,  
the COMPANY further warrants the gas-fired heat exchanger against defects in  
4. Damage as  
a
result of floods, winds, fires, lightning, accidents, corrosive  
environments or other conditions beyond the control of the COMPANY.  
5. Parts not supplied or designated by the COMPANY, or damages resulting from  
their use.  
material or workmanship under normal use and maintenance.  
A
new or  
remanufactured heat exchanger, at the COMPANY'S sole option, will be provided  
under the same conditions as stated in the ONE-YEAR WARRANTY.  
6. COMPANY products installed outside the continental U.S.A., Alaska, Hawaii and  
Canada.  
THESE EXTENDED WARRANTIES DO NOT INCLUDE LABOR OR OTHER  
COSTS incurred for diagnosing, repairing, removing, installing, shipping, servicing  
or handling of either defective parts or replacement parts.  
7. Electricity or fuel costs or increases in electricity or fuel costs from any reason  
whatsoever including additional or unusual use of supplemental electric heat.  
8. ANY SPECIAL INDIRECT OR CONSEQUENTIAL PROPERTY OR COMMER-  
CIAL DAMAGE OF ANY NATURE WHATSOEVER. Some states do not allow the  
exclusion of incidental or consequential damages, so the above limitation may not  
apply to you.  
THESE WARRANTIES APPLY ONLY TO PRODUCTS IN THEIR ORIGINAL  
INSTALLATION LOCATION AND BECOME VOID UPON REINSTALLATION.  
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
Catalog No. 530-098  
Effective on product manufactured after July 1, 1987. Supersedes any other warranty certificates supplied with the product.  
Copyright 2002 Carrier Corporation  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
PC 111 Catalog No. 534-80104 Printed in U.S.A. Form 48T-1SO Pg 8 502 3-02 Replaces: 48TF-2SO  
Book 1  
4
Tab 1a 6a  

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