WeatherMaker® Single-Packaged Rooftop Units 50A Electric Cooling with Puron® (R-410A) Refrigerant 20 to 60 Nominal Tons: 马来西亚的首选 United Faith Sdn Bhd

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Electric Cooling with 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

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 )

Capacity Ratings/Physical Data

Size	Nominal Capacity (Tons)	Standard Airflow (Cfm)	Gross Cooling (Btuh)	Heating Capacity Electric (kW)		Weight* (lbs)	Dimensions* (ft-in)
Size	Nominal Capacity (Tons)	Standard Airflow (Cfm)	Gross Cooling (Btuh)	Low	High	Weight* (lbs)	Length	Width	Height
020	20	8000	255000	36	72	3825	13'-9''	7'-10''	6'-1-1/8''
025	25	10000	300000	36	72	3961	13'-9''	7'-10''	6'-1-1/8''
027	27	11000	314700	36	72	3961	13'-9''	7'-10''	6'-1-1/8''
030	30	12000	343800	36	72	3992	13'-9''	7'-10''	6'-1-1/8''
035	35	14000	410000	36	72	4340	13'-9''	7'-10''	6'-1-1/8''
040	40	16000	484700	36	72	4770	17'-11''	7'-10''	6'-1-1/8''
050	50	20000	589900	36	72	4914	17'-11''	7'-10''	6'-1-1/8''
060	60	24000	689000	54	108	7066	25'-11''	7'-10''	6'-1-1/8''

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