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HomeMy WebLinkAboutCBA27UH Air HandlerAIR HANDLERS CBA27UHE ELITE® Series R-410A - Upflow / Horizontal - High Efficiency Blower Motor Bulletin No. 210675 October 2017 Supersedes April 2017 Nominal Capacity - 1.5 to 5 Tons Optional Electric Heat - 2.5 to 25 kW MODEL NUMBER IDENTIFICATION CB A 27 UH E - 036 - 230 - 6 - 01 Unit Type CB = Air Handler Refrigerant Type A = Aluminum Coil/R-410A Series Nominal Cooling Capacity - Tons 018 = 1.5 tons 024 = 2 tons 030 = 2.5 tons 036 = 3 tons 042 = 3.5 tons 048 = 4 tons 060 = 5 tons Refrigerant Metering Device 2 = Fixed Orifice 3 = TXV - Bleedport (indoor unit) 4 = TXV - Non-bleedport (indoor unit) 5 = TXV - Non-bleedport (outdoor unit) 6 = TXV - R-410A Non-bleedport (indoor unit) Minor Revision Number Voltage 230 = 208/230V-1 phase-60hz 1 460 = 460V-3 phase-60hz 1 Can be used with 575V (step-down transformer required) Configuration UH = Upflow/Horizontal PRODUCT SPECIFICATIONS CBA27UHE 1.5-5 TON UPFLOW/HORIZONTAL AIR HANDLERS Blower E = High Efficiency Constant Torque Blower Motor CBA27UHE / Page 2 REFRIGERANT SYSTEM Lennox Quantum™ Coil Enhanced aluminum alloy tube/enhanced fin coil for superior corrosion resistance. Lennox designed and fabricated coils. Aluminum tubing, hairpins, distributor and header tubes. Ripple-edged aluminum fins. Twin coil construction assembled in a “A” configuration for large surface area. Provides excellent heat transfer and low air resistance for maximum efficiency. Precise circuiting for uniform refrigerant distribution. Lanced fins provide maximum exposure of fin surface to air stream. Rifled tubing provides superior heat transfer. Coil thoroughly factory tested under high pressure to ensure leakproof construction. Refrigerant Line Connections Copper refrigerant sweat connections on both liquid and suction lines for easy brazing. Lines extend outside of the cabinet for ease of connection. See dimension drawings for locations. Check and Expansion Valve Furnished For use with R-410A systems. Wide range valve with Chatleff style fitting. Factory installed on all models, internal to cabinet. B C D FEATURES WARRANTY All covered components - five years in residential applications, one year in non-residential applications Refer to Lennox Limited Warranty Certificate included with each unit for additional details. APPROVALS Tested with matching air conditioners and heat pump units in the Lennox Research Laboratory environmental test room in accordance with AHRI Standard 210/240. Optional electric heaters are rated in accordance with US Department of Energy (DOE) test procedures and Federal Trade Commission (FTC) labeling regulations. Blower performance data according to unit tests conducted in Lennox air test chamber. Air handlers are UL Listed to US and Canadian safety standards and components within are bonded for grounding to meet safety standards for servicing required by CEC and NEC. Air handler units are approved for installation in manufactured housing and mobile homes. ISO 9001 Registered Manufacturing Quality System. APPLICATIONS 1.5 to 5 ton nominal sizes. Upflow or horizontal applications. Downflow applications with optional conversion kit. Applicable to expansion valve systems in cooling applications and check and expansion valve systems in heat pump applications. Wide-range check and expansion valve is factory installed. See bulletins in section Air Conditioners for cooling capacities. See bulletins in section Heat Pump Outdoor Units for cooling and heating capacities. Optional field installed electric heaters available in several sizes for additive heating capacity. A B C E D F G I H CONTENTS Blower Data .................................................................8 Dimensions ................................................................21 Electrical Data..............................................................6 Electric Heat Data ......................................................10 Features.......................................................................2 Installation Clearances With Electric Heat ..................5 Model Number Identification ........................................1 Optional Accessories ...................................................6 Replacement Circuit Breakers ....................................9 Specifications...............................................................6 CBA27UHE / Page 3 FEATURES BLOWER Power Saver™ Constant Torque Blower Motor Programmable high efficiency multi-speed blower motor. By maintaining constant torque output, blower motor can deliver more uniform (but not constant) airflow over the static pressure range. Programmable multi-speed operation is achieved by the use of an ECM (Electronically Commutated Motor) motor. Leadless blower motor features simple plug-in connections. Choice of blower speeds is available. See Blower Data tables. Blower speed change is easily accomplished by a simple wiring change. Blower Assembly Lennox designed and built, direct drive blower. Each blower is statically and dynamically balanced as an assembly before installation in the unit. Blower motor is resiliently mounted to blower assembly. Blower slides out of cabinet for servicing. CABINET Constructed of heavy-gauge galvanized steel. Completely insulated with thick fiberglass insulation. Pre-painted steel cabinets have mildly textured enamel finish with primer coat on unpainted side of all panels. Units are shipped in one piece but may be disassembled into two separate sections for ease of installation in tight applications. See dimension drawings. Thick rubber gasket between sections of the two piece cabinets provides an air tight seal. No external screw heads on sides of cabinet for tight installations without damage to walls or woodwork. Removable panels provide complete service access. Electrical inlets provided in sides and top of cabinet. See dimension drawings for locations. Low Leakage Cabinet All models have less than 2% air leakage and meet ANSI/ASHRAE Standard 193-2010 “Method of Test for Determining the Air Tightness of HVAC Equipment”. Upflow/Horizontal Capability (Optional Downflow) Shipped for upflow and horizontal left-hand discharge. May be field converted to horizontal right-hand air discharge by repositioning horizontal drain pan. Optional downflow kit available for field conversion. E F G Dual Position Drain Pans Drain pans designed for upflow, downflow or horizontal applications. Deep, corrosion resistant plastic drain pans have dual pipe drains. See dimension drawings. Optional Accessories Downflow Combustible Flooring Floor Base Base is required for models with electric heat installed in downflow position on combustible floors. Downflow Conversion Kit Required for field conversion to downflow position. Kit consists of drip shields and 2 brackets for repositioning coil and drain pan. See Specifications table. Horizontal Support Frame Kit Provides support of unit in horizontal applications. Consists of (2) 1 x 1-1/2 x 32-5/8 in. and (2) 1 x 3 x 53-7/8 in. painted heavy gauge cold rolled steel support channels with assembly and suspending holes. Bolts and nuts furnished for field assembly. Suspending rods must be field provided. Side Return Unit Stand (Upflow Only) Raises unit 16 in. above floor for side return air duct connection. Eliminates need for wooden platform construction. All aluminum construction. Two adjustable frames fit -018/024 thru -060 models. Wall Hanging Bracket Kit (Upflow Only) Allows unit to be hung on wall at any height. Consists of heavy-gauge steel support brackets (one for air handler, one for wall mount). Screws furnished for fastening one bracket to unit. Bolts for fastening one bracket to wall are field provided. High Performance Economizer (Commercial Applications Only) Designed for applications requiring outdoor air to be utilized in a commercial HVAC system. Allows the entry of fresh outdoor air for free cooling, reducing the requirement for mechanical cooling. Heavy gauge galvanized steel cabinet lined with thick fiberglass insulation. Mixed air sensor, outdoor air sensor and 24VAC transformer furnished. Approved for California Title 24 building standards. ASHRAE 90.1-2010 compliant. See separate Product Specifications bulletin for additional information and available control and sensor options.