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This page was last updated on April 21, 2003
CONIFER SAWDUST BURNER
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| Commercial Burner |
No. 111 Home Furnace Unit |
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ESTIMATING & DATA SHEET FOR SELECTION
|
BURNER MODEL NO.
(1) |
GRATE WIDTH INCHES
(2) |
GRATE AREA SQ. FT.
(3) |
OUTPUT TO HEATING UNIT BTU'S PER HR
(4) |
BURNER HORSE POWER
(5) |
RADIATION IN SQ. FT |
STACK OR CHIMNEY SIZE |
HOPPER CAPACITY CU.FT
(11) |
NET SHIP WT.
(12)
| AVG. NO. FIREBRICK TO LINE BURNER & ASHPIT |
AVG. NO. FIREBRICK TO LINE HEATING UNIT
(16) |
STEAM
(6) |
HOT WATER
(7) |
DIA. IN.
(8) |
HGT. IN.
(9) |
AREA SQ. IN.
(10) |
SPLIT
(13) |
SOAP
(14) |
STD.
(15) |
| 10 |
10.75 |
1.50 |
225,000 |
6.7 |
700 |
1125 |
8 |
30 |
50 |
7.0 |
250 |
4 |
3 |
15 |
20 |
| 11 |
11.00 |
1.80 |
270,000 |
8.2 |
840 |
1350 |
8 |
30 |
50 |
7.0 |
250 |
4 |
4 |
10 |
20 |
| 12 |
12.75 |
2.06 |
312,000 |
10.2 |
975 |
1560 |
8 |
30 |
50 |
8.5 |
400 |
- |
6 |
21 |
25 |
| 14 |
16.50 |
3.44 |
510,000 |
15.4 |
1615 |
2580 |
12 |
35 |
113 |
12.3 |
575 |
- |
4 |
26 |
35 |
| 21-S |
18.00 |
5.00 |
750,000 |
23.4 |
2340 |
3750 |
16 |
35 |
201 |
15.3 |
800 |
12 |
- |
50 |
110 |
| 24-S |
22.00 |
8.00 |
1,400,000 |
41.8 |
4375 |
7000 |
18 |
40 |
254 |
18.9 |
1200 |
15 |
- |
100 |
150 |
| 31-S |
28.00 |
12.50 |
2,187,500 |
65.4 |
6850 |
10935 |
20 |
50 |
314 |
20.7 |
2400 |
24 |
- |
175 |
240 |
| 41-S |
32.00 |
15.00 |
2,625,000 |
78.4 |
8200 |
13125 |
24 |
60 |
452 |
22.9 |
3600 |
- |
- |
350 |
390 |
| 49-S |
39.00 |
17.50 |
3,500,000 |
105.0 |
11000 |
17500 |
28 |
60 |
616 |
30.8 |
4200 |
- |
- |
360 |
425 |
| 51-S |
45.50 |
30.00 |
6,000,000 |
179.00 |
18750 |
30000 |
30 |
60 |
706 |
53.6 |
6400 |
- |
- |
875 |
950 |
| 61-S |
57.00 |
42.00 |
8,400,000 |
250.00 |
26250 |
56000 |
38 |
70 |
1134 |
64.0 |
8700 |
- |
- |
- |
- |
USE OF THE TABLE
Conifer 10, 11, 12, and 14 burners are mainly home furnace units, and Conifer S type sawdust burners are primarily designed for commercial and industrial use. The capacities indicated are based on use of western fir or pine sawdust or hogged-fuel averaging 40% moisture content. Fuel moisture content must be within 25% to 65%. Dry fuel must be wetted. Planer shavings are not recommended for hopper-fed burners unless mixed with at least 50% green sawdust or hogged-fuel.
Column No. 4: The capacities in this column are based on the following factors:
- Models 10 to 21-S : 150,000 BTU’s per square foot of grate surface per hour
- Models 24-S to 31-S : 175,000 BTU’s per square foot of grate surface per hour
- Models 41-S to 61-S : 200,000 BTU’s per square foot of grate surface per hour
The above output ratings are based upon tests using fir sawdust having an average heating value of 4700 BTU’s per pound of fuel as fired, a stack draft range of 0.09 to 0.11 inches of water and a stack temperature range of 500 to 700 degrees F.
Column No. 5: These figures are based on the factor that 33,472 BTU’s equal one horsepower, and represent the rating each burner delivers to the heating unit.
Columns No. 6 & 7: These figures represent the radiation each burner will safely handle under the fuel and draft conditions listed above. In many cases, old boilers installed prior to 1930 are either overloaded or underloaded. The latter condition usually prevails as all manufacturers had not adopted a uniform method of rating their equipment. If you are in doubt as to the rating of the boiler, it is suggested that you have a heating expert check the building, radiator, pipe lines and the domestic hot water supply to determine the total radiation on the boiler thereby enabling you to select the proper size burner needed.
Column No. 12: These figures represent the average net weight of the burner, arch tile and insulating material.
Columns No. 13, 14 & 15: These figures are average only.
Column No. 16: These figures are average only. The amount of fireback required will vary according to the type of heating unit to which the burner is to be attached. Other types of insulation equivalent to firebrick may be substituted.
NO.12 HOME UNIT BURNER : FEATURES
- THE HOPPER: The hopper is not supplied with the conifer burner because of shipping costs and individual installation requirements. The hopper which holds the sawdust or hogged fuel msut be securely fastened to the feeding ring with NO LEAKY JOINTS. Capacity should be approximately 9 feet of fuel. The hopper mustbe fitted with tight cover and is hinged to allow easy access to furnace or burner.
The adjustable feeding baffle feeds a varying depth of fuel to suit conditions of fuel and draft. Fine hogged fuel or sawdust burns equally well with free feeding from the hopper.
The pressure eliminator, suspended in the fuel magazine, eliminates packing of the fuel and positively assures a constant even flow of the sawdust or hogged fuel to the fire area.
- THE THROAT: The throat leading to the furnace directs the hot burning gases to the bottom of the furnace. This secures a longer heat travel with greater heat radiation.
- THE DRAFT: The draft regulation of the CONIFER is controlled by a gravity-operated door set on the ash door pit.
- THE ASH PIT: Very little ash residue is left from the fuel as consumed by the CONIFER. The ash pit is ample in size, and is easily cleaned through the ash pit door.
- THE GRATES: The grates are extra large and heavy, giving a very large grate area, available for extreme firing requirements. The grates are quickly accessible for inspection when necessary. Lever shaker is provided for quick removal of the slight ash residue.
- PRIMARY AIR: Even draft is secured by the primary air which is deflected to all grate area.
- SECONDARY AIR: The secondary air is introduced at the entrance of the throat to the furnace. This secondary air is pre-heated and is mixed with the burning gases from the CONIFER in just the proper proportion to secure complete combustion.
The commercial sizes of conifer burners operate on the same principles as the home furnace units.
TYPICAL INSTALLATION OF AN "S" TYPE CONIFER SAWDUST & HOGGED-FUEL BURNER ON A STEEL HEATING BOILER
We are happy to help you with your custom products.
Please contact us for details: 1-800-228-7794 208-765-3115 Fax: 1-208-664-8540
Or contact Sales : Jack Weigman (We will get back with you within 24 hours.
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Please give us a call. Thank you.)
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