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.