Carrier COMFORT 50EZ-A User Manual

1
50EZ---A and 50VT---A
Comfort™ and Performance™ 13 and 14 SEER
Single Packaged Heat Pump System
With PuronR (R---410A) Refrigerant
Single and Three Phase
2 --- 5 N o m i n a l To n s ( S i z e s 2 4 --- 6 0 )
Owner’s Information Manual
A09034
Unit 50EZ-- A without Economizer
A10077
Unit 50EZ-- A with Economizer
Fig. 1 -- Unit 50EZ --A
A09033
Unit 50VT--A without Economizer
A10078
Unit 50VT-- A with Economizer
Fig. 2 -- Unit 50VT -- A

Carrier COMFORT 50EZ-A Specifications

General

Brand	Carrier
Model	COMFORT 50EZ-A
Category	Heat Pump
Language	English

Summary

Safety Considerations

Operating Your Unit

Cooling Mode

Explains how the unit operates in cooling mode, maintaining selected indoor temperature.

Heating Mode

Describes unit operation in heating mode, maintaining selected indoor temperature.

Supplemental Heat

Details the function of supplemental heating sources used with the heat pump.

Defrost Mode

Explains the automatic defrost cycle for removing ice buildup on outdoor coils.

Emergency Heating Mode

Covers the emergency heat mode for maintaining warmth during primary unit failure.

Maintenance and Service

Routine Maintenance

Highlights routine maintenance tasks best handled by skilled personnel.

Maintenance and Care for the Equipment Owner

Details maintenance tasks the owner can perform, emphasizing safety precautions.

Air Filters

Instructions for checking, cleaning, or replacing air filters for optimal unit performance.

Fans and Fan Motor

Guidance on inspecting fan wheels, housings, and motor bearings for proper function.

Indoor and Outdoor Coils

Information regarding cleaning of indoor and outdoor coils by qualified personnel.

Condensate Drain

Procedure for checking and cleaning the drain pan and condensate drain line.

Compressor

Notes on compressor oil charge and rare need for additional oil.

Condenser Fan

Emphasizes keeping the condenser fan free of obstructions for proper cooling.

Electrical Controls and Wiring

Advises contacting a dealer for discrepancies in operating cycle or electrical controls.

Refrigerant Circuit

Guidance on checking the refrigerant circuit for leaks and calling a dealer for service.

Unit Panels

Ensuring all panels are securely fastened after maintenance to prevent issues.

Regular Dealer Maintenance

Recommendations for annual inspections by a trained service technician.

Warranty Certificate

Troubleshooting

Insufficient Heating or Cooling

Checks for airflow issues and blocked grilles when suspecting insufficient heating/cooling.

Unit Not Operating

Troubleshooting steps for a unit that is not operating, including thermostat settings.