Document V3ORXa9nnR18bne7jX0bogRaw

Heaters, Connection Circulair Heat.inc Representatives in Ail Principal dries General Offices 202 Central Ave., Louisville, Ky. Circulair Heat Installed Under Window. Standard Outlet Grille Circulair Heat is an improved convection heating unit of the concealed type for use with hot water, steam, vacuum or vapor systems in place of cast iron radiators. The Circulair Heat Unit occupies only a fraction of the space required normally for room heating equipment and consists of a carefully designed seamless copper tube on which are pressed die-stamped fins evenly spaced. Circulair Units are avail able in various widths and lengths and may be concealed in walls or cabinets. The Concealed Circulair Heater is usually plastered in the wall but a removable plaster wall panel is available where ready access to piping, valves and traps is desired. This plaster panel is plastered on the job when the wall is plastered and is invisible when the wall is finished. Circulair Heat Units are rated in equiva lent square feet of cast iron radiation. All ratings are based on 240 B.t.u. per square foot and were established by actual con densation tests. Capacities depend upon (1) Type of heater, (2) Length of heater, (3) Height of stack. A wide variety of grilje designs [ are available to harmonize with II various types of architectural ll treatment. ' M For complete engineering and installation data send for latest Circulair catalog. << Type D Grille 656 Mi Type C Grille Heaters, Unit The Dixie Blower Company 1351 West 37th Place, Chicago, 111. Manufacturers of Dixie Unit Heaters Dixie Unit Heater The Dixie Unit Heater is adapted to any service for which a unit heater can be used, including the heating of ware houses, factories, offices, theatres, garages, churches, auditoriums, and many special applications for which a heater of high quality is required. The Dixie Unit Heater is so constructed that it can be either suspended from the steam line or from an overhead support. The direction of the air is regulated by the adjustable shutters, at any angle from a horizontal direction straight down to the floor. Dixie Unit Heaters are constructed and tested to operate continuously on any steam pressure up to 150 lb. Dixie cores have been tested at several times this pressure and found to be satisfactory. This is made possible by the use. of the highest grade material throughout andby the patented compression coupling, which eliminates the possibilities of. all leaks between the tubes and the headers. Each tube is inserted in its proper place and.the coupling tightened up by hand. Each core is a job in itself. The tubes of which the Dixie core is con structed are made of heavy weight % in. seamless copper tubing upon which a spiral copper fin is securely fastened. is guaranteed to be leak-proof. A further outstanding feature of this design is the ease with which a tube can be replaced in case of damage. It is only necessary to unscrew the coupling and lift out the tube. The hole in the header can be plugged with a in. pipe plug and the unit put back into operation. The Unit need not be Cross Section of Compression Coupling Used in the Dixie Unit Heater out of service more than a few.minutes, an incalculable advantage where-service is required. In a test to determine the holding strength of this compression coupling, 11,000 lb. (2'A tons) pull was exerted try ing to pull the headers apart. Although the tubes were stretched nearly one-half inch the compression couplings held per fectly and the unit remained intact. Compression Coupling An outstanding feature of the Dixie Unit Heater is the patented compression couplings employed between the tubes and the headers. These coup lings insure a connection which Ratings at 5 lb. Steam Pressure Air Air Entering Leaving Heater Heater F. F. B.t.u. Con Eqtiiv. densate Sq.Ft. Lbs. Direct per Hour Rad. Cu. Ft. Air per Minute Ship ping Weight Lbs. 40 No. 50 1700 60 65 70 130 465240 484 1920 6400 550 136 436500 454 1816 6400 550 141 410680 428 1712 6400 ' 550 143 401000 416 1664 6400 550 144 387020 404 1616 6400 550 40 No.' 50 800 60 B 65 70 130 232620 136 218250 141 205340 143 200500 144 193510 242 227 214 208 202 960 3200 908 3200 856 3200 832 3200 808 3200 230 230 230 230 230 40 130 146880 155 612 i300 170 No. 50 135 138240 146 576 1300 170 500 60 143 128880 136 537 1300 170 65 145 124800 134 520 1300 170 70 147 121160 129 509 1300 170 40 No. 50 200 60 65 70 134 50880 53 212 920 1 120 138 45120 47 168 920 120 142 40320 42 168 920 120 143 38400 40 160 920 . 120 144 34520 37 148 ' . 920 120 Rear View Dixie Unit Heater Dixie Unit Heater No. 800--Model A uses an 850 r.p.m. motor.- Ratings on Model A are 25 per cent less than Model B. Three-speed alternatingcurrent motors operate at 500, 850 and 1150 r.pjn. 657