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Carrier Performance 48NG Owner's Information Manual
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Carrier Performance 48NG Owner's Information Manual

Carrier Performance 48NG Owner's Information Manual

2-stage packaged air conditioner and gas furnace
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48NG: Owner's Information Manual
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48NG
Performance™ 15.2+ SEER2
2-Stage Packaged Air Conditioner and Gas Furnace
System with Puron Advance™ (R-454B) Refrigerant
Single and Three Phase
2-5 Nominal Tons (Sizes 24-60)
Our products are designed, tested and built in accordance with DOE standardized procedures; however, actual operating results and efficiencies may
vary based on manufacturing and supplier tolerances, equipment configuration, operating conditions and installation practices.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Owner's Information Manual
Fig. 1 – Unit 48NG
1
A09033

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Summary of Contents for Carrier Performance 48NG

  • Page 1 48NG: Owner’s Information Manual 48NG Performance™ 15.2+ SEER2 2-Stage Packaged Air Conditioner and Gas Furnace System with Puron Advance™ (R-454B) Refrigerant Single and Three Phase 2-5 Nominal Tons (Sizes 24-60) Owner’s Information Manual A09033 Fig. 1 – Unit 48NG Our products are designed, tested and built in accordance with DOE standardized procedures; however, actual operating results and efficiencies may vary based on manufacturing and supplier tolerances, equipment configuration, operating conditions and installation practices.
  • Page 2 48NG: Owner’s Information Manual Safety Considerations manufacturer’s instructions. For more information about Carbon Monoxide, local laws, or to purchase a CO Alarm, please visit the This unit is equipped with electrically powered safety measures. For the following website https://www.kidde.com safety measures to be effective, the unit must be electrically powered at all times after installation, other than when servicing.
  • Page 3 48NG: Owner’s Information Manual 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. There may be more than one disconnect switch.

  • Page 4: Operating Your Unit

    48NG: Owner’s Information Manual Operating Your Unit The operation of your unit is controlled by the indoor temperature control (thermostat). You simply adjust the thermostat and it maintains the indoor temperature at the level you select. Most thermostats of heating and cooling systems have 3 controls: a temperature control selector, a FAN control, and a SYSTEM or MODE control.

  • Page 5: Air Filters

    48NG: Owner’s Information Manual Air Filters Table 2 – Internal Filter Rack Data (inside the unit itself) Unit Size Filter Size in. (mm) CAUTION 2 each 12 x 20 x 1 24-040/060 305 x 508 x 25 mm UNIT OPERATION HAZARD Failure to follow this caution may result in property damage.
  • Page 6 48NG: Owner’s Information Manual A13035 Fig. 4 – To Start Unit Gas Heat Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 7 48NG: Owner’s Information Manual A13036 Fig. 5 – To Shut-off Unit Gas Heat Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

  • Page 8: Refrigerant Circuit

    48NG: Owner’s Information Manual MAIN STEP 2 STEP 4 & 5 STEP 1 STEP 3 A09194 Fig. 6 – To Start Unit Electric Cooling MAIN STEP 1 STEP 2 STEP 3 A07797 Fig. 7 – To Shut-off Unit Electric Cooling Fans and Fan Motors The fan must be kept free of all obstructions to ensure proper cooling.

  • Page 9: Warranty Certificate

    48NG: Owner’s Information Manual allowed to build up. This inspection should be done by a trained service 12. Operational check of the unit to determine working conditions. person. Repair or adjustment should be made at this time. Your servicing dealer may offer an economical service contract that WARNING covers seasonal inspections.
  • Page 10 1. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and operating hours. Consult your HVAC dealer about a service contract for seasonal inspections. 2. Do not use harsh chemicals or high pressure water on coils. More frequent rinsing is required for units near a sea coast. © 2025 Carrier. All rights reserved. Edition Date: 05/25 Catalog No: OM48NG-01 Replaces: New Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.