Carrier 48XT-A User Manual

48XT---A Infinityr 15 SEER Single Packaged HYBRID HEATr Du a l Fuel System with PuronR (R --- 410A) Refrigerant

Owner’s Information Manual

Fig. 1 -- Unit 48XT--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

Model # _____________________________________

Serial # ______________________________________

ACCESSORIES (List type and model #)

_____________________________________________

NOTE TO INSTALLER:

This manual must be left with the equipment owner.

INSTALLATION INFORMATION

Date Installed ________________________________

DEALERSHIP CONTACT INFORMATION

Company Name_______________________________

Address______________________________________

_____________________________________________

Phone Number _______________________________

Technician Name _____________________________

_____________________________________________

Note: Installer: This manual should beleft withtheequipment user.

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. 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 Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code (NEC) NFPA 70.

In Canada refer to the current editions of the National Standards of Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane Installation codes, and Canadian Electrical Code CSA C22.1

Recognize safety information. This is the safety--alert symbol 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 u sed 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 highlight suggestions which will result in enhanced installation, reliability, or operation.

WARNING

FIRE AND EXPLOSION HAZARD

What to do if you smell gas:

1. Do not try to light any appliance.

2. Do not touch any electricalswitch;do not useany phone in your building.

3. Leave the building immediately.

4. Immediately call your gas supplier from a nearby phone. Follow the gas supplier’s instructions.

5. If you cannot reach your gas supplier, call the fire department.

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.

FIRE,EXPLOSION, ELECTRICAL SHOCK HAZARD

Failure to follow this hazard warning could result in personal injury, death and/or property damage.

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, familiarize yourself with all the procedures that must be followed.

WARNING

FIRE,EXPLOSION, ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, death 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.

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.

CUT HAZARD

Failure to follow this caution may result in personal injury.

When removing access panels or performing maintenance functions insideyour unit, be awareof sharp sheetmetal 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.

WARNING

CAUTION

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury, death, and/or property damage.

Do not attempt to light by hand.

This 48XT--A unit is a small packaged HYBRID HEAT® system that can utilize both the efficiency of heat pump heating and the comfort of gas heating. The system will optimize for ideal heating, depending on several factors. This unit uses Puron friendly refrigerant, for cooling and heat pump heating.

You may notice your two--stage packaged HYBRID HEAT® system runs for longer periods of time. Nearly 80% of the time it’s running, it is operating in low--stage, and your indoor temperature will remain more consistent with fewer drafts, better humidity control, enhanced comfort and enhanced energy efficiency.

Starting or Shutting Off Unit Note:Your combination heating/cooling unit is equipped with an

automatic direct spark ignition and power combustion blower.

To start unit gas heat:

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 temperatureselector on UI to the lowest temperature setting and set system switch to Emergency Heat.

2. Close the external manual gas shutoff valve.

WARNING

UNIT INTRODUCTION

, the ozone

3. Turn off the electrical supply to the unit.

4. Remove the front access panel with a 5/16--in. nut driver.

5. Move the selector switch on the internal gas valveto theOFF position and wait 5 minutes.

6. Move the selector switch on the internal gas valve to the ON position.

7. Replace the front access panel.

8. Turn on the electrical supply to unit.

9. Open the external manual gas shutoff valve.

10. Set the temperature selector on UI slightly above room temperature to start unit. The induced--draft combustion air fan will start.Main gasvalve willopen and main burners should ignitewithin 5 seconds. If the burnerdoes 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.

11. Set the temperature selector on UI to desired setting.

Filter Access Panel For Accessory Filter Rack

Access Panels

A09045

Fig. 2 -- Accessory Filter Rack Access Panel

Flue Hood

Burners

Gas Valve

A09043

Fig. 3 -- Gas Heating/Electric Cooling Unit with

Access Panel Removed

appearance is shown in Fig. 2.)

(Standard unit shown. Actual

FIRE AND EXPLOSION HAZARD

Failure to follow this warning could result in personal injury, death, and/or property damage.

1. If the main burners fail to light, or the blower fails to start, shutdown gas heating section and call your dealerfor 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.

To Shut--off Unit Gas Heat:

FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD

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.

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 manual gas valve to the unit before shutting off the electrical 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. 5 while proceeding with the following steps.

1. Set the temperature selector on UI to lowest temperature setting 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 front access panel.

5. Move the selectorswitchon the internalgas valveto the OFF position.

6. Replace the front access panel.

To Start Unit Electric Cooling:

Refer to Fig. 6 while proceeding with the following steps.

1. Set the temperatureselectoron UI to highesttemperaturesetting 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 front access panel.

5. Move the selector switch on the internal gas valveto theOFF position.

6. Replace the front access panel

7. Restore electrical power to the unit and set system switch to COOL.

8. Set the temperature selector on UI slightly below the room temperature to start unit.

To Shut Off Unit Electric Cooling:

Refer to Fig. 7 while proceeding with the following steps.

1. Set the temperatureselectoron UI to highesttemperaturesetting and set system SWITCH to OFF.

2. Close the external manual shutoff valve.

WARNING

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