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Need help?Do you have a question about the Carrier PERFORMANCE 50VT-A and is the answer not in the manual?
Verify unit model number and serial number against shipping papers.
Install accessory roof curb or concrete pad for unit placement.
Ensure adequate ventilation and outdoor air by maintaining minimum service clearances.
Visually inspect rigging components for damage or wear before initial use.
Use top skid as spreader bar, attach shackles to base rails, and ensure unit is lifted level.
Steps for converting horizontal discharge units to downflow vertical discharge configurations.
Connect field-supplied disconnect switch and ensure proper grounding and wiring.
Use No. 18 AWG wires for thermostat connections, avoiding power-stealing types.
Procedure to retap the transformer for 208 VAC primary voltage.
Locate and repair leaks, then evacuate system to 500 microns.
Complete pre-start procedures, do not jumper safety devices, and check compressor rotation.
Ensure grilles are open, filters clean, and check system airflow if performance is suspected.
Field-selectable mode to eliminate defrost cycle noise.
Control initiates defrost based on time/temperature, with selectable intervals.
Inspect and clean/replace air filters monthly or when clogged.
Clean accumulated dirt and grease from blower wheel and motor annually.
Inspect and clean coils and drain pan annually for obstructions and debris.
Keep the outdoor fan free from obstructions to ensure proper cooling operation.
Shuts off compressor during low suction pressures; check continuity.
Protects against excessive condenser coil pressure; opens at 650 psig.
System uses Puron (R-410A) refrigerant; higher pressures than R-22.
Uses 3MAF POE oil; absorbs moisture readily.
Precautions to protect roofing from POE oil exposure.
Biflow filter drier must be replaced whenever the system is opened.
Thermally actuated switch that senses outdoor coil temperature for defrost cycles.
A list of checks to perform before and during unit start-up.
Verify unit model number and serial number against shipping papers.
Install accessory roof curb or concrete pad for unit placement.
Ensure adequate ventilation and outdoor air by maintaining minimum service clearances.
Visually inspect rigging components for damage or wear before initial use.
Use top skid as spreader bar, attach shackles to base rails, and ensure unit is lifted level.
Steps for converting horizontal discharge units to downflow vertical discharge configurations.
Connect field-supplied disconnect switch and ensure proper grounding and wiring.
Use No. 18 AWG wires for thermostat connections, avoiding power-stealing types.
Procedure to retap the transformer for 208 VAC primary voltage.
Locate and repair leaks, then evacuate system to 500 microns.
Complete pre-start procedures, do not jumper safety devices, and check compressor rotation.
Ensure grilles are open, filters clean, and check system airflow if performance is suspected.
Field-selectable mode to eliminate defrost cycle noise.
Control initiates defrost based on time/temperature, with selectable intervals.
Inspect and clean/replace air filters monthly or when clogged.
Clean accumulated dirt and grease from blower wheel and motor annually.
Inspect and clean coils and drain pan annually for obstructions and debris.
Keep the outdoor fan free from obstructions to ensure proper cooling operation.
Shuts off compressor during low suction pressures; check continuity.
Protects against excessive condenser coil pressure; opens at 650 psig.
System uses Puron (R-410A) refrigerant; higher pressures than R-22.
Uses 3MAF POE oil; absorbs moisture readily.
Precautions to protect roofing from POE oil exposure.
Biflow filter drier must be replaced whenever the system is opened.
Thermally actuated switch that senses outdoor coil temperature for defrost cycles.
A list of checks to perform before and during unit start-up.
General