Carrier 50EW Air Conditioner User Manual
Contents
1. 50GL A Single Packaged 50 Hz CE Air Conditioner System with Puron R 410A Refrigerant C Carrier 7 14 kW Sizes 24 48 tunto the experts f Owner s Information Manual A09042 Fig 1 Unit 50GL 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 Date Installed Serial DEALERSHIP CONTACT INFORMATION Company Name ACCESSORIES List type and model Address Phone Number Technician Name NOTE TO INSTALLER This manual must be left with the equipment owner SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause death personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations2. 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 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 Table 1 indicates the correct indoor filter size for your unit Refer to Fig 2 to access filters installed in the accessory filter rack Ifusing an Accessory Filter Rack refer to the Installation Instructions pro vided with it for correct filter sizes and quantities Table 1 Indoor Air Filter Data Unit Size Filter Size in mm 24 20x20x1 508x508x25 30 20x24x1 508x610x25 36 24x30x1 610x762x25 48 24x36x1 610x914x25 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 2 Remove the filter s by pulling it out of the unit If the filter s is dirty clean or replace with a new one When installing the new filter s note the direction of the airflow ar rows on the filter frame If you have difficulty locating your air filter s or have questions concerning proper
3. Routine Maintenance All routine maintenance should be handled by skilled experienced personnel Your dealer can help you establish a standard procedure 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 Maintenance and Care for the Equipment Owner Before proceeding with those things you might want to maintain yourself please carefully consider the following A WARNING FIRE EXPLOSION ELECTRICAL SHOCK AND CUT HAZARD Failure to follow this warning could result in personal injury death or property damage 1 TURN OFF ELECTRICAL POWER TO YOUR UNIT BEFORE SERVICING OR PERFORMING 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 Wear safety glasses glove and appropriate protective clothing Air Filters 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
4. if required cleaning of the outdoor and indoor coils 2 Inspection and if required cleaning of the indoor coil drain pan 3 Inspection and cleaning of blower wheel housing and motor 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 5 Inspection of the unit base to ensure that no cracks gaps etc exist which may cause a hazardous condition 6 Inspection of the unit casing for signs of deterioration 7 Inspection of all electrical wiring and components to assure proper connection 8 Inspection for leaks in the refrigerant circuit Pressure check to determine appropriate refrigerant charge 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 10 Operational check of the unit to determine working conditions Repair or adjustment should be made at this time Your servicing dealer may offer an economical service contract that covers seasonal inspections Ask for further details Complete service instructions can be found in the unit Installation Start up and Service Instructions Before you call for service check for several easily solved problems If insufficient heating or cooling is suspected _ Check for sufficient airflow Check the air filter for dirt Check for blocked return air or supply air gri
5. as possible 1 Set system MODE control to OFF 2 Turn off the electrical power supply to unit OPERATING YOUR UNIT The operation of your unit is controlled by indoor thermostat You simply adjust the thermostat and it maintains the indoor temperature at the level you select Most thermostats of cooling systems have 3 controls a temperature control selector a FAN control and a SYS TEM or MODE control Refer to your thermostat owner s manual for more information To better protect your investment and to eliminate unnecessary ser vice calls familiarize yourself with the following facts Step 1 Cooling Mode 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 Step 2 Heating Mode if installed with optional electric heat Your system may also be equipped with an electric heating source On cold days and nights place your MODE control to HEAT and your system will automatically turn on the supplemental heat in or der to maintain the level of comfort you have selected 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
6. 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 A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in property damage 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 and blower motor and or compressor damage Filter Access Panel For Accessory Filter Rach Access Panels A09380 Fig 2 Accessory Filter Rack Access Panel Fans and Fan Motors Periodically check the condition of fan wheels and housings and fan motor shaft bearings Contact your dealer for the required annual maintenance 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 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 Compressor All compressors are factory shipped with anormal charge of the cor rect type of refrigeration grade oil A compressor should rarely re quire additional oil Condenser Fan A WARNING PERSONAL INJURY AND UNIT DAMAGE HAZARD Failure to follow this warning could result in personal injury death or property damage Do not poke sticks screwdrive
7. FIRE EXPLOSION HAZARD Failure to follow this warning could result in personal injury death and or property damage Do not store or use combustible materials gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury and or death Before performing recommended maintenance be sure the main power switch to unit is turned off and lock out tag is installed A CAUTION Failure to follow this caution may result in personal injury 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 A WARNING FIRE EXPLOSION ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury death or property damage 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 which has been under water Starting or Shutting Unit Off To start the unit 1 Turn on the electrical power supply to unit 2 Select temperature and set MODE control to desired mode To shut unit off Note If the unit is being shut down because of a malfunction call your dealer as soon
8. Have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes the current editions of the National Electrical Code NEC NFPA 70 In Canada refer to the current editions of the Canadian electrical Code CSA C22 1 Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to high light suggestions which will result in enhanced installation reli ability or operation Note Installer This manual should be left with the equipment user A WARNING FIRE EXPLOSION ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury death and or property damage Installation and servicing of this equipment can be hazardous due to mechanical and electrical components Only trained and qualified personnel should install repair or service this equipment A WARNING
9. lles Be sure they are open and unobstructed If these checks do not reveal the cause call your servicing dealer If your unit is not operating at all check the following list for easy solutions __ Check to be sure that the temperature specified by your User Interface is set below the indoor temperature during the cooling sea son or above the indoor temperature during heating season Be sure the User Interface is set to COOL or HEAT and not OFF _ 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 Case of Trouble If you perform the steps above and unit performance is still unsatis factory shut off the unit and call your dealer Turn to the Experts 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 amp Systems heading for dealer listing by brand name Have available the Model No Series Letter amp Serial No of your equipment to ensure correct replacement part Copyright 2009 Carrier Corporation Printed in the U S A Manufacturer reserves the righ
10. rs or any other object into revolving fan blades The fan must be kept free of all obstructions to ensure proper cool ing Contact your dealer for any required service Electrical Controls and Wiring Electrical controls are difficult to check without proper instrumenta tion If there are any discrepancies in the operating cycle contact your local dealer and request service Refrigerant Circuit The refrigerant circuit is difficult to check for leaks without the prop er equipment If inadequate cooling is suspected contact your local dealer for service A WARNING EXPLOSION BURN 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 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 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 and
11. t to change at any time specifications and design without notice and without obligation Edition Date 06 09 4 Catalog No OM50GL C01 Replaces OM50 C1
Download Pdf Manuals
Related Search