48DK Weathermaker II Rooftop Units VAV Cooling with Gas Heat

Single-Package Rooftop Products Designed to Meet Commercial and Industrial Application Requirements

Features/Benefits

Design flexibility: Convertible unit design allows the factory built vertical unit to be easily converted to horizontal by installing 2 panels (accessory horizontal conversion package). No modification to the optional economizer is required. The convertible design allows the unit to be used for conventional down-flow applications or special horizontal applications, such as replacement or noise sensitive applications. The horizontal installation allows sound to be attenuated before the duct penetrates the roof.

Gas heat: Aluminized steel gas heat exchanger is tubular design for low-pressure drop. Aluminized steel material ensures long life. Induced draft design maintains a negative pressure in the heat exchanger as a safety precaution to prevent any noxious fumes from mixing with supply air. VAV (variable air volume) units are one stage heat for morning warm-up. Units are built for use with natural gas.

Unit efficiency: Dual serviceable, semi-hermetic compressors on intertwined evaporator coil ensures excellent full and part-load efficiency with EERs (Energy Efficiency Ratio) to 9.6. Dual refrigerant circuits provide standby capability should one circuit require service. Reliable 06D Carlyle compressors are proven performers. Variable air volume units have a minimum of 5 stages of unloading.

Installation/serviceability: Small footprint requires less roof area and makes unit easier to rig. Low unit profile allows units to be mounted closer to edge of building while remaining out of public view. Up to 60% smaller volume than comparable units. Single-point electric and gas connections are standard on all units.

Unit controls: Variable air volume units utilize a self-diagnostic micro-processor based control. The microprocessor monitors stages of cooling, morning warm-up cycle, and unit safety controls.