No. 1042 Gas-Fired Heavy-Duty Furnace

No. 1042 is a 2000° F (1093° C), gas-fired heavy-duty furnace from Grieve, used for heat treating at the customer’s facility. Workspace dimensions of this furnace measure 30” W x 60” D x 30” H, and 750,000 BTU/HR are installed in four modulating natural gas burners with a floor mounted combustion air blower. Burners fire below hearth, with 9”-thick insulated walls comprising 5”-thick 2300° F ceramic fiber, 4” 1900° F block insulation and 8 1/2” floor insulation made from 4 ½” of 2300° F firebrick and 4” of 1900° F block insulation.

This Grieve furnace has two lanes of roller rails supported by firebrick piers and an air-operated platform with roller rails to bridge from loading table to workspace. Features include a ¼” plate steel exterior reinforced with structural steel, ½” steel faceplate at doorway and an air-operated vertical lift door.

Other features include safety equipment required by IRI, FM and National Fire Protection Association Standard 86 for gas-heated equipment plus a free-standing 390 CFM high-pressure combustion blower.

Controls on the No. 1042 include a digital indicating temperature controller and manual reset excess temperature controller with separate contactors.