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48EZ---A and 48VT---B
Comfort™ 13 and 14 SEER
Single Packaged HYBRID HEATr Dual Fuel System
With Puronr (R---410A) Refrigerant
Single and Three Phase
2---5 Nominal Tons (Sizes 24---60)
Owner's Information Manual
Without Economizer
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 of model #)
_____________________________________________
_____________________________________________
_____________________________________________
A09034
Fig. 1 - - Unit 48EZ- -A and 48VT- -B
NOTE TO EQUIPMENT OWNER:
NOTE TO INSTALLER:
This manual must be left with the equipment owner.
With Economizer
INSTALLATION INFORMATION
Date Installed________________________________
DEALERSHIP CONTACT INFORMATION
Company Name_______________________________
Address______________________________________
_____________________________________________
Phone Number _______________________________
Technician Name _____________________________
_____________________________________________
1
A10077

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Summary of Contents for Carrier 48VT-B

  • Page 1 48EZ---A and 48VT---B Comfort™ 13 and 14 SEER Single Packaged HYBRID HEATr Dual Fuel System With Puronr (R---410A) Refrigerant Single and Three Phase 2---5 Nominal Tons (Sizes 24---60) Owner’s Information Manual A10077 A09034 With Economizer Without Economizer Fig. 1 - - Unit 48EZ- -A and 48VT- -B NOTE TO EQUIPMENT OWNER: For your convenience, please record the model and serial numbers of your new equipment in the spaces provided.
  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS CAUTION Installation and servicing of this equipment can be hazardous due to mechanical and electrical components. Only trained and CUT HAZARD qualified personnel should install, repair, or service this equipment. Failure to follow this caution may result in personal injury. Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters.
  • Page 3: Unit Introduction

    seconds (following the 5- -second ignition period). If the CAUTION burners do not light within 15 minutes of the initial call for heat, there is a lockout. 11. Set the temperature selector on room thermostat to desired CUT HAZARD setting. Failure to follow this caution may result in personal injury.
  • Page 4: Operating Your Unit

    3. Turn off the electrical power supply to the unit. MODE control. Refer to your thermostat owner’s manual for more information. 4. Remove the control access panel. (See Fig. 2.) To better protect your investment and to eliminate unnecessary 5. Move the selector switch on the internal gas valve to the service calls, familiarize yourself with the following facts: OFF position.
  • Page 5 MAIN STEP 1 STEP 2 STEP 3 STEP 5 STEP 4 STEP 6 STEP 7 MAIN STEP 8 STEP 9 STEP 10 A07662 Fig. 4 - - To Start Unit Gas Heat...
  • Page 6 MAIN STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 A07663 Fig. 5 - - To Shut Off Unit Gas Heat MAIN STEP 2 STEP 4 & 5 STEP 1 STEP 3 A09194 Fig. 6 - - To Start Unit Electric Cooling...
  • Page 7: Maintenance And Service

    MAIN STEP 1 STEP 2 STEP 3 A07797 Fig. 7 - - To Shut Off Unit Electric Cooling Defrost Mode WARNING When your heat pump is providing heat to your home or office and the outdoor temperature drops below 45F (7.2C), moisture may FIRE, EXPLOSION, ELECTRICAL SHOCK AND begin to freeze on the surface of the coil.
  • Page 8 48VT Unit Size Filter Size in. (mm) 2 each 20 x 12 x 1 24-040/060 (508 x 305 x 25 mm) 2 each 20 x 12 x 1 30-040/060 (508 x 305 x 25 mm) 1 each 24 x 14 x 1 (610 x 406 x 25), 36-060/090 24 x 16 x 1 (610 x 406 x 25) 1 each 24 x 14 x 1 (610 x 356 x 25),...
  • Page 9 Condenser (Outdoor) Fan CAUTION WARNING BURN HAZARD Failure to follow this caution may result in personal injury. PERSONAL INJURY UNIT DAMAGE HAZARD Components in heating section may be hot after unit has been started up. When observing flame, be careful not to get Failure to follow this warning could result in personal close to or touch heating components.
  • Page 10 Fig. 10 - - Monoport Burner Catalog No: OM48EZ---VT ---05 Copyright 2014 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 09/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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