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Heating Systems
Boilers Steel
Cyclotherm Division
National-U. S. Radiator Corporation
Sales and Executive Offices
Oswego, New York
Factory'Distributors throughout the United States
CYCLOTHEKM STEAM AND HOT WATER GENERATORS
... operate on Cyclonic Combustion prin ciple; Completely automatic with full safety controls. Oil, gas or interchange able gas and oil firing. Only four con nections required.
The Cyclonic Combustion operating principle causes the fuel to be burned -while spiraling at high velocity around the inside wall: of the combustion chamber, forming virtually a tube of flame. This provides uniform and highly efficient heat'transfer over the entire furnace wall without hot spots. Com plete utilization of heat transfer areas provides quick heat as well as greater than 80 percent efficiency with the re duced maintenance of a two-pass design.
18 to 80 hp models are equipped with `on-off" control"; 100 to 500 hp models have modulated control. 80 hp units with modulating controls furnished at customers request. Automatic combus tion safeguard, low water and other safety controls are included.
Size* from 18 to 500 hp
Pressure Range
Available in standard low pressure units or high pressures up to 200 psi. Hot water generators are also available in all sizes.
Standard Burner Arrangements
Fuel
Cyclotherm Model No.
Light Oil, 1 to 3 C-600 thru C-17,500
Gas, mfd., mixed
and natural
C-600 thru C-17,500
Comb. It. oil and gas C-600 thru C-17,500
Heavy Oil, 5, 6 and
Bunker C
C-2800 thru C-17,500
Comb. hy. oil and gas C-2800 thru C-17,500
STANDARD RATINGS AND DIMENSIONS
Steam Units
Hot Water Units
Model Max. hp Output Btu No. Rating . Per Hour
C-600 . C-1000
C-1400
C-1725 C-2100
C-2800 C-3500
C-4400
C-5200
C-7000 C-8700 C-10500 C-12000
C-13800
C-17500
18 '
< 30; 40-
50 * 60
80
100
125 150
200 250 300
350
400
500
603,000 ; 1,005,000
1,340,000
1,675,000 2,010,000
2,680,000
3,350,000 . 4,187,500
5,025,000
>. 6,700,000 8,375,000
10,050,000 11,725,000
13,400,000
16,750,000
Steam Per Hr (Lbs)
Equiva lent Di rect Radi
ation
(Sq Ft)
620
1,035
1,380 1,725
2,070 . 2,760
3.450 4,315
5,175
- 6,900 8,625
10,350 12,075
13,800
17,250
2,513 4,188 5,583 6,980 8,375 11,167 13,959 17,448*
20,938 27,917
34,896 41,875 48,854
55,833 69,792
Gallons per Hr
(100 Rise)
744 1,240 1,654 2;06S 2,481 3,308 4/135 5; 169 \ 6.203 8,270 10,338 12,405 14,473 16,540 20,675
Equiv. Direct Radiation
4,020 6,700 8,933 11,167 13,400 17,867 22,333 27,917 33,500 44,667 55,833 67,000 78.167 89,333 111,667
380
Overall Dimensions (Inches)
Length Height Width
70H 80H 87M 84
124H 152 162*4
173H 197H 224}$
251W 252 252 252 293*4
45H 55 57*4 57 H 64*4 66K 73H 84 H
91H 98*4 98H mi
102H 102H 102H
36 45
51 56 65
Heating Systems
Boilers, Steel
The Dewey-Shepard Boiler Go.
Peru, Indiana
STEEL FIRE TUBE BOILERS & HEATERS GAS & OIL FIRED
VERTICAL FIRE TUBE UNITS capaciUes 95,000 to 1,000,000 Btu
ASME :CODE CONSTRUCTED NATIONAL BOARD REGISTRATION
All Dewey-Shepard boilers and water heaters (oil and gas fired) are built on the pat ented "Tube within a Tube" principle. All units are jacketed with fiber-glass insula- tion ready for instant hook-up.
Oil Burners Underwriters Approved. Gas Burners A.G.A. Listed. Boilers Automatically Welded. Built-in Coils Optional.
NET RATING
Model
Water, Sq Ft
Steam, Sq Ft
B 560 350
C 756 470
D 840
620
E 1120
700
F 1400
875
G 1540
965
H 1960
1230
I
2120
1330
J
2750
1720
K 3000
1895
L 4900 3200
M 5960 3730
Boiler ratings do not include allowance for Built-in Coils. * If piping and pick-up loss exceeds 20 percent of installed radiation, allow for such added loss.
OIL and GAS BOILERS and WATER HEATERS
Dewey-Shepard's patented "Tube within a Tube" principle gives you 80 percent or more heat absorption, resulting in pre-heating the incoming cold water before it comes in contact with the metal surfaces to which radiant heat is being applied. There is one square foot of heating surface for every gallon of water, transferring every possible unit of heat to the water, resulting in EFFICIENT, ECONOMICAL OPERATION . . . plus many other advantages for your customers, such as:
LESS FUEL USED LOWER INSTALLATION COST* NO LIME--NO SCALE# 20 PERCENT LESS HEAT LOSS THROUGH THE STACK#NO EXPANSION, CONTRACTION OR CONDENSATION* CLEANEST HEAT POSSIBLE* SUFFI CIENT HOT WATER AT ALL TIMES
ALSO MULTIPLE INSTALLATIONS 381