50DJ Weathermaker II Rooftop Units Constant Volume Cooling with Optional Electric Heat
20 to 27 Nominal Tons
Models 50DJ cooling/heating or cooling only units that are pre-wired and pre-charged with R-22 at the factory. The standard unit is factory assembled, rated in accordance with ARI standard 360, tested in accordance with UL standard 1995, and listed by ETL and CSA. The Single-Package Rooftop Products are Designed to Meet Commercial and Industrial Applications and are complete with:
Features/Benefits
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 connections are standard on all units, regardless of voltage or optional heater size. Electrical service access can be made through roof curb or side of unit. Hinged access panels are located so as to make it easy to reach standard serviceable components for maintenance. No fasteners need to be removed, which reduces servicing time and prevents roof leaks caused by discarded screws puncturing the roof.
Unit controls Constant volume units utilize a solid-state relay board that interfaces with any 2-stage heat/2-stage cool thermostat. Economizer units utilize a mixed air thermistor with a field-adjustable set point. Unit design is ETL (Electrical Testing Laboratory) and CSA (Canadian Standards Association) certified. A set of terminals is provided for a switch or relay to disable the unit; all other connections must be made directly to the appropriate device.