Direct Gas Firerd Heating Equipment - Hartzell Fan - #3

Model GFC - Forward Curved Centrifugal Fan

Direct Gas Fired Forward Curved Make-Up Air Heaters, Model GFC, are rated for 2,000 CFM (200,000 BTU/Hr) through 75,000 CFM (9,788,850 BTU/Hr). Units sized 2,000 CFM through 30,000 CFM utilize a single, DWDI forward curve blower. Units 35,000 CFM through 75,000 CFM utilize twin, DWDI forward curve blowers. These units are best suited for applications through 2 1/2" external static pressure.

Hartzell Model GFC units are completely packaged. Units are fac­tory assembled and tested before shipment. Basic units 2,000 CFM through 30,000 CFM, will ship in 1 piece, while 35,000 CFM through 75,000 CFM units will ship in 2 pieces. These units are easy to install, easy to operate, lightweight, low in cost and low in maintenance.

Unit housings are constructed of 16-gauge G-90 galvanized steel. The basic unit consists of a fan and burner section, NEMA 4/12 control cabinet, plumbing, burner and inlet bird screen. Both the electrical control cabinet and plumbing are mounted externally. Roofs are peaked to resist water penetration and collection. On sizes 15,000 CFM through 75,000 CFM, units have a standing seam roof. Standard mounting position for control cabinets and plumbing is on the right hand side of the unit. The access door will be opposite the control cabinet (left hand side). Standard right hand control position is determined by facing into the airstream. Left hand controls are optional. Lifting lugs are standard on all units.

• OEDP motors mounted in the airstream are standard. Drives are fixed pitch type with belts that are oil, heat, and static resistant. Relubricable pillow block bearings are standard, with a minimum L10 life of 30,000 hours.

• Burners are Maxon Type "NP-LE" with a maximum 25:1 turn down ratio with natural gas or 20:1 turndown ratio with propane gas and ETL certified units.

• The standard temperature control system is Maxitrol Series 14, which controls the discharge duct temperature. Standard units can develop a maximum discharge temperature of 140°F.

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