WeatherExpert® Ultra High-Efficiency Single-Packaged Rooftop Units 48LC Gas Heating : Electric Cooling Units with Puron® (R-410A) Refrigerant 3 to 23 Nominal Tons: Pilihan Utama di Selangor, Malaysia, Kuala Lumpur (KL), Singapore, Puchong, Petaling Jaya (PJ), Pandan Jaya United Faith Sdn Bhd

Penerangan

Gas Heating / Electric Cooling Units with Puron® (R-410A) Refrigerant

3 to 23 Nominal Tons

48LC WeatherExpert® rooftop units were designed by customers for customers. They are Carrier’s most efficient commercial packaged rooftop ever produced and have some of the industry’s highest IEER’s available. The multi stage cooling compressor logic allows for added comfort, energy savings and humidity control. The unit is ideal for single zone variable air volume capability. Units are pre-wired and pre-charged with environmentally sound Puron® (R-410A) refrigerant at the factory. The units are factory tested in both heating and cooling modes.

Performance Features

Exceeded Department of Energy Advanced RTU Challenge by 15%
Exceeds ASHRAE 90.1 and Energy Star efficiency levels, as well as Consortium for Energy Efficiency (CEE) criteria
3 to 5 ton models have two-stage cooling capacity control and 6 to 23 ton models have three-stage cooling capacity control
Up to 17.5 SEER and 20.8 IEER
Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
3 to 23 ton models have standard cooling operation up to 125 °F (52°C), and down to 10°F (-12°C) (3-5 ton models), or down to 40°F (4°C) (6-23 ton models). 3 to 5 ton models have cooling operation down to 0°F (-18°C) with ComfortLink controls.
VAV models use a duct static pressure sensor to vary the units indoor fan motor variable frequency drive (VFD) while cooling capacity is controlled by the units supply air temperature sensor, to make sure the correct temperature in each zone.

Maintenance Features

Control terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
Access panels with easy grip handles and tool-less filter access door
Innovative, easy starting, no-strip screw feature on unit access panels
Optional hinged access panels also available
Two-inch disposable return air filters
All models have a belt drive evaporator-fan motor and pulley combinations with VFD controller to match the capacity cooling stages for maximum efficiency and comfort control
3 to 5 ton models have an optional ECM direct drive (multi-speed and torque) indoor fan motor system

Installation Features

Same footprint as installed Carrier 3-5 ton rooftops back to 1989, reducing installation costs and time
Field convertible from vertical to horizontal airflow for slab mounting without any special kits (size 04-12 units)
Provisions for thru-the-bottom power entry capability as standard
Single point electric, gas, and controls connections
Full perimeter base rail with built-in rigging adapters and fork truck slots
Dedicated vertical and horizontal airflow models available (factory option on size 14 to 26 units)

Reliability Features

Scroll compressors with internal line-break overload protection
24-volt control circuit protected with resettable circuit breaker
Permanently lubricated evaporator-fan motor
Totally enclosed condenser motors with permanently lubricated bearings
Low pressure and high-pressure switch protection
Exclusive IGC anti-cycle protection for gas heat operation
Solid-state electronic direct spark ignition system and flame roll-out safety protector

Factory-Installed Options

Cabinet
- Thru-the-base electrical or gas-line connections
- Hinged access panels
- Foil-faced insulation
Coil Options
- Cu/Cu indoor and/or outdoor coils
- Pre-coated outdoor coils
- Premium, E-coated outdoor coils
Humidity Control
- Humidi-MiZer Adaptive dehumidification system
Condenser Protection
- Condenser coil hail guard (louvered design)
Controls
- ComfortLink DDC communicating controller (sizes 04-06)
- RTU OPEN multi-protocol controller
- Smoke detector (supply and/or return air)
Economizers & Outdoor Air Dampers
- EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD)
- EconoMi$er2 (for DDC controlled RTUs)
- Ultra-low leak economizer dampers
- Motorized 2 position outdoor-air damper
- Manual outdoor-air damper(sizes 14-26)
- Barometric relief
- Power exhaust (sizes 14-26)
Economizer Sensors & IAQ Devices
- Single dry bulb temperature sensors
- Single enthalpy sensors
- CO2 sensor (wall, duct, or unit mounted)
Gas Heat
- Stainless steel heat exchanger
Indoor Motor & Drive
- Multiple motor and drive packages
Low Ambient Control
- ComfortLink provides cooling operation down to 0°F (-18°C)(3 to 5 ton only)
Power Options
- Convenience outlet (powered)
- Convenience outlet (unpowered)
- Non-fused disconnect
- HACR Circuit Breaker

Field-Installed Accessories

Cabinet
- Thru-the-base electrical or gas-line connections
Condenser Protection
- Condenser coil hail guard (louvered design)
Controls
- Thermostats, temperature sensors, and subbases
- RTU OPEN multi-protocol controller
- Smoke detector (supply and/or return air) (sizes 14-26)
- Time Guard II compressor delay control circuit
- Filter status switch
- Fan status switch
Economizers & Outdoor Air Dampers
- EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD)
- EconoMi$er2 (for DDC controlled RTUs)
- Ultra-low leak economizer dampers
- Motorized 2 position outdoor-air damper
- Manual outdoor-air damper
- Barometric relief
- Power exhaust
Economizer Sensors & IAQ Devices
- Single dry bulb temperature sensors
- Differential dry bulb temperature sensors
- Single enthalpy sensors
- Differential enthalpy sensors
- CO2 sensor (wall, duct, or unit mounted)
Gas Heat
- Liquid propane (LP) conversion kit
- High altitude conversion kit
- Flue discharge deflector
Low Ambient Control
- Winter start kit
Roof Curbs
- Roof curb 14'' (356mm)
- Roof curb 24'' (610mm)

Nominal Cooling Ton Size	Cooling Stages	AHRI Efficiency (SEER) EER	Dimensions (in) LxWxH	Low Gas Heating Input (MBtuh)	Medium Gas Heating Input (MBtuh)	High Gas Heating Input (MBtuh)	Approx. Unit Weight (lbs)
3	2	(17.1)	74 x 47 x 33	72	115	--	505
4	2	(17.5)	74 x 47 x 41	72	115	150	590
5	2	(17.2)	74 x 47 x 41	72	115	150	600
6	3	20.5	88 x 59 x 41	72	125	150	1032
7.5	3	19.8	116 x 63 x 57	125	180	224	1606
8.5	3	20.9	116 x 63 x 57	125	180	224	1606
10	3	20.6	116 x 63 x 57	180	224	250	1606
12.5	3	19.1	128 x 87 x 49	150	180	240	1853
15	3	18.4	141 x 87 x 49	220	310	400	2095
17.5	3	17.7	141 x 87 x 49	220	310	400	2201
20	3	18.0	158 x 87 x 57	220	310	400	2347
23	3	17.8	158 x 87 x 57	220	310	400	2492

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