48XL---A
Infinityr 15 SEER
Single Packaged Air Conditioner and
Gas Furnace System with PuronR (R---410A) Refrigerant
Owner’s Information Manual
A09032
Fig. 1 -- Unit 48XL--A
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.
1
UNIT INTRODUCTION
This 48XL--A unit is a small packaged gas heat/electric cooling sys-
tem that can utilize the comfort of gas heating packaged along with
®
efficient electric air conditioning. This unit uses Puron , the envi-
ronmentally friendly refrigerant, for cooling.
OPERATING YOUR UNIT
The operation of your unit is controlled by the Infinityr User Inter-
face (UI). You simply program the UI and it maintains the indoor
temperature at the level you select. See UI manual for detailed in-
structions.
Flue Hood
To better protect your investment and to eliminate unnecessary ser-
vice calls, familiarize yourself with the following facts:
Burners
Gas Valve
A09043
To start unit gas heat:
Fig. 3 -- Gas Heating/Electric Cooling Unit with Access Panel
Removed (Standard unit shown. Actual appearance is shown
in Fig. 2.)
Refer to Fig. 2 for location of unit front access panel. Refer to Fig.
3 for location of gas valve. Refer to Fig. 4 while proceeding with the
following steps.
1. Set the temperature selector on UI to the lowest temperature
setting and set system switch to HEAT.
WARNING
FIRE AND EXPLOSION HAZARD
!
2. Close the external manual gas shutoff valve.
3. Turn off the electrical supply to the unit.
Failure to follow this warning could result in personal injury,
death, and/or property damage.
4. Remove the control access panel with a 5/16--in. nut driver.
(See Fig. 3.)
1. If the main burners fail to light, or the blower fails to start,
shut down gas heating section and call your dealer for service.
2. 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.
5. Move the selector switch onthe internalgas valveto theOFF
position and wait 5 minutes.
6. Move the selector switch on the internal gas valve to the ON
position.
7. Replace the control access panel.
To shut off unit gas heat:
8. Turn on the electrical supply to unit.
9. Open the external manual gas shutoff valve.
WARNING
!
10. Set the temperature selector on UI slightly above room tem-
perature 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 burner does not light within 5
seconds, the ignition module will go into a Retry Mode after
a period of approximately 22 seconds (following the
5--second ignition period). If the burners do not light within
15 minutes of the initial call for heat, there is a lockout.
FIRE,
HAZARD
EXPLOSION,
ELECTRICAL
SHOCK
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Do not turn off the electrical power to unit without first
turning off the gas supply.
11. Set the temperature selector on UI to desired setting.
Note:If the unit is being shut down because of a malfunction, call
your dealer as soon as possible.
Should overheating occur or the gas supply fail to shut off, shut off
the external manualgasvalveto theunitbeforeshutting off theelec-
trical supply. Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the unit
and to replace any part of the control system and any gas control
which has been under water.
Refer to Fig. 4 while proceeding with the following steps.
1. Set thetemperatureselectoron UI to lowest temperatureset-
ting and set system SWITCH to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
4. Remove the control access panel.
5. Movetheselectorswitchontheinternalgas valveto theOFF
position.
To start unit electric cooling:
Filter Access Panel
For Accessory Filter Rack
Refer to Fig. 5 while proceeding with the following steps.
1. Set the temperature selector on UI to highest temperature
setting and set system SWITCH to OFF.
Access Panels
A09045
2. Close the external manual shutoff valve, if not already
closed.
Fig. 2 -- Accessory Filter Rack Access Panel
3. Turn off the electrical power supply to the unit.
3
4. Remove the front access panel.
To shut off unit electric cooling:
5. Move the selector switch onthe internalgas valveto theOFF
position.
Refer to Fig. 6 while proceeding with the following steps.
1. Set the temperatureselector onUI tohighest temperatureset-
ting and set system SWITCH to OFF.
6. Replace the front access panel
7. Restore electrical power to the unit and set system switch to
COOL.
2. Close the external manual shutoff valve.
8. Set the temperature selector on UI slightly below the room
temperature to start unit.
3. Turn off the electrical power supply to the unit.
MAIN
ON
55
OFF
STEP 1
STEP 2
STEP 3
STEP 5
STEP 4
STEP 6
STEP 7
MAIN
ON
72
OFF
STEP 8
STEP 9
STEP 10
A09133
Fig. 4 - To Start Unit Gas Heat
4
MAIN
ON
55
OFF
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
A09134
Fig. 5 - To Shut-off Unit Gas Heat
Cooling Mode
MAINTENANCE AND SERVICE
This section discusses maintenance that should be performed on
your system. Most maintenance should be performed by your deal-
er. You, as the owner, may wish to handle some minor maintenance
for your new unit.
With the SYSTEM or MODE control set to COOL, your unit will
run in cooling mode until the indoor temperature is lowered to the
level you have selected. On extremely hot days, your unit will run
for longer periods at a time and have shorter “off” periods than on
moderate days.
Routine Maintenance
All routine maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard procedure.
Gas Heating Mode
With the SYSTEM or MODE control set to HEAT, your unit will
run in heating mode until the room temperature is raised to the level
you have selected. Of course, your unit will run for longer periods
to maintain a comfortable environment on cooler days and nights
than on moderate ones.
To assure proper functioning of the unit, flow of condenser air must
not be obstructed from reaching the unit. Clearance from the top of
the unit is 48 in. (1219 mm) Clearance of at least 36 in. (914 mm)
is required on sides except the power entry side (42 in. [1067 mm]
clearance) and the duct side (12 in. [305 mm] minimum clearance).
5
MAIN
ON
90
OFF
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
MAIN
ON
OFF
STEP 6
STEP 7
72
STEP 8
A09135
Fig. 6 - To Start Unit Electric Cooling
6
MAIN
ON
90
OFF
STEP 1
STEP 2
STEP 3
A07797
Fig. 7 - To Shut-off Unit Electric Cooling
BURNER FLAME
Table 1—Air Filters Located Inside Unit
(For Replacement Purposes)
BURNER
Unit Size
Quantity
Filter Size in. (mm)
12x20x1
(305x508x25)
A24---A30
2
12x24x1
(305x610x25)
A36---A60
3
MANIFOLD
To replace or inspect filters in accessory filter rack (See Fig. 2):
1. Remove the filter access panel using a 5/16--in. nut driver.
C99021
Fig. 8 - Monoport Burner
2. Removethefilter(s)by pulling itoutoftheunit.If thefilter(s)
is dirty, clean or replace with a new one.
Maintenance and Care for the Equipment Owner
Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
When installing the new filter(s), note the direction of the airflow
arrows on the filter frame.
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for in-
structions. When replacing filters, always use the same size and type
of filter that was supplied originally by the installer.
!
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CUT HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
!
WARNING
1. TURN OFF ELECTRICAL POWER TO YOUR UNIT
FIRE AND UNIT OPERATION HAZARD
BEFORE
SERVICING
OR
PERFORMING
Failure to follow this warning could result in personal injury,
death or property damage.
MAINTENANCE.
2. When removing access panels or performing maintenance
functions inside your unit, be aware of sharp sheet metal
parts and screws. Although special care is taken to reduce
sharp edges to a minimum, be extremely careful when
handling parts or reaching into the unit.
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.
Fans and Fan Motors
Air Filters
Periodically check the condition of fan wheels and housings and
fan--motor shaft bearings. Contact your dealer for the required
annual maintenance.
The air filter(s) should be checked every 3 or 4 weeks and changed
or cleaned whenever it becomes dirty. Dirty filters produce exces-
sive stress on the blower motor and can cause the motor to overheat
and shut down.
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.
This unit must have air filters in place before it can be operated.
These filters can be located in one of at least two places. In many ap-
plications, the installer will provide return air filter grilles mounted
on the wall or ceiling of the conditioned structure. In the instance of
filter grilles, the filters can simply be removed from the grille and re-
placed.
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 deal-
er.
The other typical application is an accessory filter rack installed in-
side the unit itself. The following information is given to assist in
changing filters used in these internal filter racks.
Compressor
All compressors arefactory shippedwith anormal chargeof thecor-
rect type of refrigeration grade oil. A compressor should rarely re-
quire additional oil.
Table 1 indicates the correct filter size for your unit. Refer to Fig. 2
to access filters installed in the accessory filter rack.
7
Condenser Fan
3. Inspection and cleaning of blower wheelhousing andmotor.
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.
!
WARNING
PERSONAL INJURY AND UNIT DAMAGE HAZARD
5. Inspectionof theunit baseto ensurethat nocracks, gaps,etc.,
exist which may cause a hazardous condition.
Failure to follow this warning could result in personal injury,
death or property damage.
6. Inspection of the unit casing for signs of deterioration.
Do not poke sticks, screwdrivers, or any other object into
revolving fan blades.
7. Inspection of all electrical wiring and components to assure
proper connection.
The fan must be kept free of all obstructions to ensure proper cool-
ing. Contact your dealer for any required service.
8. Inspection for leaks in the refrigerant circuit. Pressure check
to determine appropriate refrigerant charge.
Electrical Controls and Wiring
9. Operational check of the unit to determine working
conditions.Repairoradjustmentshouldbe madeat thistime.
Electrical controlsare difficultto checkwithout properinstrumenta-
tion. If there are any discrepancies in the operating cycle, contact
your local dealer and request service.
Your servicing dealer may offer an economical service contract that
covers seasonal inspections. Ask for further details.
Refrigerant Circuit
Complete service instructions can be found in the unit Installation,
Start--up and Service Instructions.
Therefrigerantcircuitisdifficulttocheckforleakswithout theprop-
er equipment. If inadequate cooling is suspected, contact your local
dealer for service.
Warranty Certificate
Your 48XL--A unit has a limited warranty. Be sure to read the war-
ranty carefully to determine the coverage for your unit.
!
WARNING
Before you call for service...
EXPLOSION, BURN AND ENVIRONMENTAL
HAZARD
...check for several easily--solved problems.
If insufficient heating or cooling is suspected:
Failure to follow this warning could result in personal injury,
death or property damage.
( ) Check for sufficient airflow. Check the air filter for dirt. 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.
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.
If your unit is not operating at all, check the following list for
easy solutions:
Unit Panels
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.
( ) Check to be sure that the temperature specified by your UI is set
below the indoor temperature during the cooling season or above
the indoor temperature during heating season. Be sure the UI is set
to COOL or HEAT and not OFF.
Regular Dealer Maintenance
(
) 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.
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 and, if required, cleaning of the outdoor and
indoor coils.
In Case of Trouble
2. Inspection and, if required, cleaning of the indoor coil drain
pan.
If you perform the steps above and unit performance is still unsatis-
factory, shut off the unit and call your dealer.
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 2009 Carrier Corporation
Edition Date: 03/09
Catalog No: OM48XL---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 4 8 --- 2 5
8
|