Roberts Gorden IDF-Series manual Reliable, Efficient System Operation Provided by

Combat® by Roberts-Gordon IDF-Series Features

Reliable, Efficient System Operation Provided by:

•Double-width, double-inlet, forward-curved Class I, AMCA rated centrifugal fan.

•System that does not contaminate heated air with combustion by-products.

•Operation of fan only in warm weather to enjoy free ventilation cooling.

•Full-floating, stainless steel primary heat exchanger.

•Multiple blowers on tubular steel blower shafts (on most models).

•Mounting and wiring of all necessary operating starters, relays, switches, safety controls and fuses.

•Variable pitch drive pulley (up through 10 hp).

•ODP motors with adjustable motor mounts.

Long Lasting Construction Provided by:

•Rugged angle steel base frame on every unit section to withstand the rigors of shipping and handling.

•Fabricated sheet panels that virtually eliminate rattling or rumbling.

•Extra long life, self-aligning bearings sized for industrial duty.

•White painted finish.

•Double-wall heat exchanger module.

Ease of Maintenance Provided by:

•Modular designed sections.

•Convenient access to heat exchangers and blower module for field service.

•Optional service platforms on upright units.

Other IDF-Series Options:

•Natural gas, propane gas or oil burners available.

•Roof curbs and vertical stands simplify mounting.

•Fresh air hood with birdscreen helps protect against water entrainment.

•V-bank filter section with disposable or cleanable f ltersi for longer equipment life of internal components.

•Motorized two-position inlet or discharge damper for exfiltration control.

•Gas trains approved to FM, IRI, or other special code requirements.

•Insulated and/or weatherized sections available for outdoor units.

IDF-Series Controls’ Options:

•Remote Station with room or discharge thermostat for easy operation and remote temperature adjustment.

•UL listed.

•Audible alarm for flame failure.

•Clogged filter indicator.

•Service Receptacle.

•Unit-mounted on/off toggle switch.

Combat® by Roberts-Gordon IDF-Series Optional Cooling Packages

Evaporative Cooling

COMBAT® by Roberts-Gordon IDF-Series evaporative cooling system is an economical cooling 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.

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 IDF-Series offer a broad range of cooling options.

Cooling options can be added by simply installing coil sections equipped with the appropriate cooling coils and a condensing unit or chiller. The versatility afforded by the coil section enables you to utilize DX refrigerant, chilled water or other types of cooling coils in your system.