Carrier 25VNA Heat Pump User Manual
Contents
1. be sure to have the model and serial numbers of your equipment available there are spaces on the cover for you to write this information REGULAR DEALER MAINTENANCE In addition to the routine maintenance that you perform your home comfort system should be inspected regularly by a properly trained service technician Many dealers offer this service at a reduced rate with a service contract Some service contracts offer additional benefits such as parts discounts and no additional charge for after hours or emergency service Your annual system inspection should include Routine inspection of air filter s with replacement or cleaning as required Inspection and cleaning of the blower wheel housing and motor Inspection and if required cleaning of indoor and outdoor coils Inspection of the indoor coil drain pan as well as the primary and secondary drain lines If the system has an auxiliary drain pan and line they should be inspected at this time as well Service should include cleaning if required Check all electrical wiring and connections Check for secure physical connections of individual parts in each unit Operational check of the heat pump system to determine actual working condition Necessary repair and or adjustment should be performed at this time Always Ask For Copyright 2011 Carrier Corp e 7310 W Morris St e Indianapolis IN 46231 Printed in U S A Edition Date 05 11 Catalog No OM25VNA 01 Manufa2. continuously Depending on your typical heating needs your home comfort system may also include a supplementary heating source that will automatically turn on as needed You may also select this heat source manually if desired OPERATION UNDER EXTREME CONDITIONS Your heat pump will run as long as necessary to maintain the indoor temperature selected on your Infinity Control On extremely hot days your heat pump will run for longer periods at a time than on moderate days Your system will also run for longer periods of time under the following conditions e Frequent opening of exterior doors e Operating laundry appliances e Taking hot showers e More than the usual number of people present in the home e More than the normal number of electric lights in use e Drapes or blinds are open on the sunny side of the home IMPORTANT HEAT PUMP FACTS Heat pump systems have a few unique features and operations that you should be aware of e During the heating cycle your heat pump delivers a constant flow of air at around 95 to about 105 F compared to sudden blasts of hot air provided by a typical furnace e Ice or frost may form on the outdoor coil during winter heating operation Your heat pump will automatically melt the ice us ing its defrost cycle During defrost you may see steam or fog rising from the outdoor unit which is normal At the beginning and end of the defrost cycle you may hear a whoosh sound coming from the un
3. 25VNA Infinity Variable Speed Heat Pump with Greenspeed Intelligence 2 to 5 Nominal Tons turn to the expe Owner s Manual A NOTE ABOUT SAFETY Any time you see this symbol in manuals instructions and on the unit be aware of the potential for personal injury There are three levels of precaution DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards that could result in personal injury or death CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation 4 WARNING PERSONAL INJURY DEATH AND OR PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal injury death or property damage Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or service agency must use factory authorized kits or accessories when modifying this product Read and follow all instructions and warnings including labels shipped with or attached to unit before operating your new heat pump ABOUT YOUR HE
4. AT PUMP SYSTEM Identifying Your System Your new Carrier heat pump system is what we call a split system It has an outdoor unit and an indoor unit connected to each other with copper tubing called refrigerant lines Each of these units has a rating plate with the model and serial numbers you will need to reference when calling an authorized Carrier dealer about your system Take a few moments now to locate those numbers and record them in the spaces provided on the cover of this booklet USING YOUR NEW CARRIER SYSTEM Your Carrier heat pump system is controlled by a wall mounted Infinity Control installed inside your home This system requires an Infinity Control which has software designed specifically to operate this system See the Infinity Control Homeowner Guide for more details on system operation INFINITY VARIABLE SPEED OPERATION You may notice your system runs for longer periods of time This system is designed to meet cooling or heating needs of the home at a wide range of conditions Your indoor temperature will remain more consistent with fewer drafts better humidity control enhanced comfort and enhanced energy efficiency HEATING AND COOLING YOUR HOME For heating or cooling operation make sure the System or Mode control is set to the appropriate mode Then adjust the Temperature control to your desired setting Finally use the Fan control to select Automatic turns on and off as heating is needed or On runs
5. al and is protected by top grade paint take the additional precaution of periodically washing all exposed surfaces and the outdoor coil approximately every 3 months Consult your installing Carrier dealer for proper cleaning intervals and procedures for your geographic area or ask about a service contract for regularly scheduled professional cleaning and inspections TROUBLESHOOTING Before you request dealer service check for these easily solved problems e Check the indoor and outdoor disconnect switches Also check your main electrical panel circuit breakers or fuses e Check for sufficient airflow Air filter s should be reasonably clean and interior vents should be open and unobstructed e Check Infinity Control settings For cooling your desired temperature setting should be LOWER than the displayed room temperature and the System Mode control should be on Cool or Auto For heating your temperature setting should be HIGHER than the displayed room temperature and the System Mode control is set to Heat or Auto e Time delays depending on the Carrier heat pump you have there may be delays in unit operation that are built in to protect the equipment and your comfort Don t be alarmed if you notice a time delay in operation It may be a standard protection feature of your equipment Check with your Carrier Dealer for more information on time delays If you need to contact your Carrier dealer for troubleshooting and or repairs
6. cturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces New 4
7. it This is normal for heat pump applications e Heat pumps installed in areas expecting snow are elevated with support feet SOUND Your new variable speed heat pump with Greenspeed Intelligence is different from most heating and cooling systems Because this is a variable speed system it is designed to operate at different speeds depending on the temperature and humidity conditions You may notice the sound coming from the outdoor unit changing from time to time and from season to season In winter the system will operate at higher speeds as it gets colder outside to maintain its heating performance The higher speed produces a higher sound This change of speeds allows the system to operate more efficiently and maintain comfortable conditions inside the home You may also hear a slight purr at start up and shut down These sounds are normal and do not represent a problem with your system ROUTINE MAINTENANCE Simple routine maintenance as described below will enhance your heat pump system s ability to operate economically and dependably Always remember the following safety precautions A WARNING Failure to follow this warning could result in personal injury or death Disconnect all electrical power to the indoor air handler or furnace before removing access panels to perform any maintenance Disconnect power to both the indoor and outdoor units Lock out and tag switch with suitable warning label NOTE There
8. may be more than one electrical disconnect switch Thermostat AE A a g a i a a Fig 1 Electrical Disconnects A CAUTION PERSONAL INJURY AND OR PRODUCT AND PROPERTY DAMAGE HAZARD Failure to follow this caution may result in personal injury or product and property damage Although special care has been taken to minimize sharp edges in the construction of your unit be extremely careful and wear appropriate protective clothing and gloves when handling parts or reaching into the unit e Keep Filter Clean A clogged or improperly installed air filter on your indoor unit will increase operating costs and shorten the life of the unit For detailed filter cleaning information refer to indoor unit literature e Do Not Block Floor Wall or Ceiling Vents When drapes furniture toys or other common household items block vents the restricted airflow lessens the system s efficiency and life span Do Not Cover or Block Outdoor Unit The outdoor unit needs unrestricted airflow Do not cover it or place items on or next to it Do not allow grass clippings leaves or other debris to accumulate on the sides or top of the unit And maintain a 12 304 8 mm minimum clearance between the outdoor unit and tall grass vines shrubs etc e Check Condensate Drain Your heat pump removes humidity from your home during the cooling season After a few minutes of operation water sh
9. ould trickle from the condensate drain of the indoor coil Check this occasionally to be sure the drain system is not clogged Drainage will be limited if you live in a very dry environment e Do Not Operate Below 55 F 12 78 C in Cooling Mode Your outdoor unit is not designed to operate when outdoor temperatures are lower than 55 F 12 78 C without modification If operation below this temperature is required consult your Carrier dealer e Do Not Operate Above 66 F 18 89 C in Heating Mode Your outdoor unit is not designed to operate on heating mode when outdoor temperatures are higher than 66 F 18 89 C You can safely operate the system above 66 F 18 89 C on emergency or auxiliary heat e Base Pan Drainage Periodically check for and remove debris that has settled around the base of your outdoor unit This will ensure proper drainage of the base pan and eliminate standing water inside the outdoor unit e Level Installation Your Carrier dealer will install the outdoor unit in a level position If the support base settles or shifts and the unit is no longer level be sure to re level it promptly to assure proper drainage If you notice water or ice collecting beneath the unit arrange for it to be drained away from the unit SEA COAST COIL MAINTENANCE Coastal locations often require additional maintenance of the outdoor unit due to highly corrosive airborne ocean salt Although your new Carrier system is made of galvanized met
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