Roberts Gorden Combat DF-Series - Manual (Page 3)

Combat ® by Roberts-Gordon DF-Series Features
Reliable, Effi cient System Operation Provided by:
• 30:1 fully modulating burner that maintains 100%
combustion
effi ciency.
• Double-width, double-inlet, forward-curved
centrifugal fan built for long life.
• Energy-saving ignition system.
• System that puts 100% of the available heat in the
airstream, not out a fl ue.
• Unit that uses up to 50% less energy.
• Remote Control Panel for easy operation and remote
temperature
adjustment.
• Electronic fuel modulation providing immediate
response.
• UV scanner for excellent reliability and durability
on Models DF75 - DF700B.
• Temperature dial for quick, easy adjustment.
• Operation of fan only in warm weather to enjoy
free ventilation cooling.
• Compliance to ETL per ANSI Z83.18 or Z83.4
standards.
• Industry-leading 80-point checklist to help facilitate
trouble-free startup.
Ease of Maintenance Provided by:
• Large access panel for easy maintenance of blower,
motor, drives and burner.
• Blower installed downstream of burner for
convenient access.
Other DF-Series Options:
• 10" or 20" Roof Curb simplifi es rooftop mounting.
• Inlet Hood protects against water entrainment.
• Filter Section with polylink or aluminum fi lters for
longer equipment life of internal components.
• Motorized Inlet Damper for exfi ltration control.
• FM/IRI approved gas trains.
• Upright heater stand or legs of varying heights.
DF-Series Conventional Controls’ Options:
• Low-temperature automatic shutdown.
• Space temperature control for added comfort.
• 7-day time clock.
• Remote Control Panel with burner and blower
switches for easy operation.
• Mild weather stat.
Long Lasting Construction Provided by:
• Heavy-duty, corrosion-resistant, galvanized steel
construction.
• Sturdy, integral frame that is screwed and bolted
together for durability and longer service life.
• Unpainted galvanized steel or white fi nishes
available.
• Heavy-duty, factory-installed motor and drive package
designed for long-lasting performance.
• Heavy-duty, pre-lubricated bearings provide up to
30,000 hours of ABMA L-10 performance.
Combat ® by Roberts-Gordon DF-Series Optional Cooling Packages
COMBAT® by Roberts-Gordon DF-Series evaporative cooling system is an economical solution. It requires no air-cooled
condenser, no chiller or cooling tower, no chilled water pumps or distribution piping/insulation, no major motor control
center or electrical gear. Operating costs are a fraction of similar-capacity mechanical refrigeration systems.
Evaporative cooling works when warm air passes over specially treated wetted media. The heat passes from the air to the
wetted media, causing the water to evaporate and inside air to cool.
Evaporative Cooling
Mechanical Cooling
For situations requiring temperature and humidity levels lower than the performance parameters available with outdoor air
alone or with evaporative cooling, COMBAT® by Roberts-Gordon DF-Series off er a broad range of cooling options.
Cooling options can be added by simply installing one of our coil sections equipped with the appropriate cooling coils and a
condensing unit or chiller. The versatility aff orded by the coil section enables you to utilize DX refrigerant, chilled water or other
types of cooling coils in your system.