50A WeatherMaker® Single-Packaged Rooftop Units Electric Cooling Puron® (R-410A) Refrigerant

Single-Packaged Rooftop Units
Electric Cooling
Puron® (R-410A) Refrigerant

20 to 60 Nominal Tons

50A2 – CV/SAV, Vertical
50A3 - VAV, Vertical
50A4 – CV/SAV, Horizontal
50A5 - VAV, Horizontal

Carrier A Series Rooftop products are pre-wired and charged with refrigerant and tested in both cooling and heating modes at the factory. All models feature an industrial grade cabinet with fully hinged access panels. Superior supply fan performance with up to 3.5 in. external static pressure is standard.

Units are available in Constant Volume (CV), Staged Air Volume (SAV), or Variable Air Volume (VAV) applications. A variety of electric heat options are available. Units come standard with ComfortLink™ control and Scroll compressors on dual independent TXV controlled refrigeration circuits.

Performance Features

• High-efficiency scroll compressors (digital compressor available)
• Two-stage cooling on Constant Volume and Staged Air Volume units, with multiple adaptive demand control for up to 5 stages of cooling capacity
• Cooling operation range up to 120° F ambient and down to 35° F ambient
• ComfortLink™ control includes: easy to use scrolling marquee display, service diagnostics, run test capabilities, demand limit capability, compressor reverse rotation protection, and BACnet communication option.
• California Energy Commission Title 24 Compliant
• Meet or exceed the EER requirements of ASHRAE Standard 90.1, rated in accordance with ARI Standard 340/360
• Tested in accordance with UL Standard 1995 and listed by ETL and ETL, Canada

Maintenance Features

• Large hinged service access doors
• On-board diagnostics include refrigerant pressure sensors
• Double wall design available

Installation Features

• Shipped with R-410A refrigerant charge
• Single point electrical service entry, thru unit bottom or side
• Lifting lugs

Reliability Features

• Dual electrically and mechanically independent refrigeration circuits with coil frost protection, liquid line filter driers, and crankcase heaters standard on all models
• Compressor protection includes high and low pressure transducers with safety cutouts
• Circuit breaker protection for all power components
• Cabinet made of pre-painted, galvanized steel with baked enamel finish, which meets ASTM B117 salt spray resistance
• Condenser-fan motors are totally enclosed, with internal protection
• Reliable Integrated Gas Unit Controller (IGC) provides system evaluation & troubleshooting via on-board LED and two stage gas valves with redundant 100% shutoff

Standard Limited Warranty

• One year parts only on all other parts
• 3-years parts only on Novation™ condenser coil
• 5-years non pro-rated warranty on heat exchanger

Capacity Ratings/Physical Data

NOTES
*Standard chassis/vertical airflow. See your Carrier representative for information and other configurations.

Factory-Installed Options

• Electric Heat
  • Low electric heat
  • High electric heat
• Indoor Air Quality
  • 2-inch filters
  • 4-inch filters
  • Return air CO2 sensor
• Economizer
  • Manual outside air self-closing damper
  • Modulating integrated ultra-low leak economizer
• Exhaust Air Control
  • Barometric relief (vertical units only)
  • Non-modulating power exhaust (CV/SAV vertical units only)
  • Modulating power exhaust and static sensor (vertical units only)
• Condenser and Evaporator Coils
  • Al/Cu condenser & evaporator
  • Al/Cu Pre-coat condenser & Al/Cu evaporator
  • Al/Cu E-coat condenser & Al/Cu evaporator
  • Cu/Cu condenser & Al/Cu evaporator
  • All-aluminum Novation condenser and Al/Cu evaporator
  • E-coat all-aluminum Novation condenser and Al/Cu evaporator
  • Digital Compressor
  • Hot gas bypass
  • Galvanized drain pan
  • Stainless drain pan
• Controls
  • Controls option board
  • Return air CO2 sensor
  • Return air smoke detector
  • Filter switch
  • BACnet communication
• Power Circuit
  • GFI convenience outlet (powered)
  • GFI convenience outlet (not powered)
  • Power terminal block
  • Non-fused disconnect
• Indoor Motor Options
  • Low HP, high efficiency
  • Medium HP, high efficiency
  • High HP, high efficiency

Field-Installed Accessories

• Indoor Air Quality
  • Return air CO2 sensor
  • CO2 space sensor
  • CO2 aspirator box
• Economizer
  • Outdoor or return humidity sensor (enthalpy)
  • Exhaust Air Control
  • Barometric relief
  • Non-modulating power exhaust
  • Modulating power exhaust and static sensor
  • High capacity modulating power exhaust and static sensor
  • Supply and building pressure control board
  • Build pressure control sensor
• Condenser and Evaporator Coils
  • Condenser coil hail guard assembly
• Controls
  • Controls option board
  • Enhanced display
  • Navigator™ display
  • Return air CO2 sensor
  • Smoke detector
  • Filter switch
  • Fan status switch (requires options board)
  • T55 temperature sensor
  • T56 temperature sensor
  • T58 temperature sensor
  • Space temperature sensor with CO2 override
  • Space temperature sensor setpoint and CO2 override
  • Remote enhanced display
  • Thermostats (Debonair®)
  • Thermostats (Slimline)
  • Thermostats (Corporate)
  • BACnet Communication module
  • MODBUS Carrier translator
  • LonWorks Carrier translator
• Miscellaneous Options
  • Roof curb adapter kit
  • 14-inch roof curb
  • Low ambient control (Motormaster® V )