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Low Pressure Steam Boilers - 15 PSI Power Burner Fired


Rite Power Burner Fired Low Pressure Steam Boilers have been providing our valued customers with high quality steam safely and reliably for over forty years. From autoclaves to humidifiers, bakeries to breweries - these heavy duty watertube steamers are available in 47 different models, ranging from 480 - 12,499 MBH input (11 - 300 Boiler Horsepower) for the widest selection possible.

So simple to maintain and operate, Rite Steam Boilers feature complete waterside access so that virtually all scale and mud deposits can be seen and mechanically cleaned during a single scheduled maintenance shutdown. The result - Better fuel-to-steam efficiency and lower operating cost over the life of your boiler investment. Consider a few of our other standard features: • Rite’s floating heads that eliminate pressure vessel cracks and broken welds caused by thermal stress cycling (backed by our 25 Year Thermal Shock Warranty) • Rite’s “superheated” drying tubes that regularly boost steam quality at the nozzle into the 99%+ range • Rite’s bolted/gasketed headplates that eliminate any possibility of hydraulic explosion in the event that safety devices fail - and you have a better boiler by design.

RITE POWER BURNER FEATURES

Rite Power Burner Fired Low Pressure Steam Boilers must be specified when: Low NOx emissions are required or fuels other than natural gas will be used. While Power Burners are more expensive and use more electrical power than atmospherics, they do have one advantage: by controlling the amount of air they use for combustion, Power Burners achieve higher combustion efficiencies than atmospherics – especially at less than full fire rate.

RITE POWER BURNER FIRED BOILERS VS. "FORCED DRAFT BOILERS"

Both use Power Burners to combust the fuel, but the similarities end there. Forced draft boilers require larger fan motors to “push” the products of combustion out a sealed combustion chamber and into a positive pressure stack. Should a leak develop in the combustion chamber or stack of a forced draft boiler – potentially toxic flue gasses could escape into the boiler room.

Rite Power Burner Fired Boilers use smaller fan motors to combust the fuel only. All Rite Boilers are designed to operate with negative pressure combustion chambers and stacks, which means flue gasses are safely under negative draft conditions from the time the fuel is burned until they exit the stack.

Power Burner Low Pressure Steam Boiler

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Models and Ratings


Stack / Draft Requirements

  • UL listed for use with Type B Vent when power burner is for natural or L.P. gas fired only.
  • Type 304 stainless steel lined stack is required when equipped with #2 oil or combination gas & #2 oil burner.
  • Minimum stack height for natural or L.P. gas fired burners is 10 feet.
  • Minimum height for #2 oil or combination gas & #2 oil fired boilers is 15 ft.
  • The stack should be supported independently of the boiler and an adjustable length section of stack should be installed after the barometric damper to allow for future separation. All Rite Boilers have internal stack supports to handle the weight of the stack during installation.
  • Power Burner fired boilers are supplied with a barometric damper (shipped loose) and a draft gauge (installed) to help set and maintain a draft between -.05” to -.09” W.C. for all fuels and firing rates.

Air Requirements

Adequate Combustion/Ventilation Air is vital for safe, efficient operation. Refer to the latest edition of the Uniform Mechanical Code or consult your local Building and Safety Department for specific requirements. Warning: Do not install in a room that will develop negative pressure without utilizing a properly sized induced draft fan.

Electrical Requirements

  • A single point 1 or 3 phase supply is required to the burner panel. See separate Burner Price Lists for standard electrical power requirements.
  • Separate electrical supply may be required to operate boiler feed pump.

Natural Gas Supply Requirements

  • Models 48 S * - 400 S * 7” w.c. min. to 14” w.c. max. at flow.
  • Models 120 S * - 180 S * 7” w.c. min. to 28” w.c. max. at flow.
  • Models 200 S * - 400 S * 7” w.c. min. to 10 psi max. at flow.
  • Models 425 S * - 600 S * 14” w.c. min. to 10 psi max. at flow.
  • Models 650 S * - 1250 S * 23” w.c. min. to 10 psi max. at flow.

#2 Oil Supply Requirement

  • Supply to oil pump: minimum gravity flow to maximum 3 psi.

Elevation

Rite must know the job location and elevation ahead of time. The burner will be sized for full input at that elevation.

Feedwater Systems & Blowdown Tanks

Rite manufactures a complete line of Condensate Return Feedwater Tanks and Blowdown Tanks for our Steam Boilers shown below.

Information in the table below is subject to change during website development. Please contact Rite with issues or questions.

BOILER MODEL
Input MBH
MBH (Output)
E.D.R.
Boiler Horsepower
Heating Surface Sq. Ft.
Flooded Water Content Gallons
Normal Water Level Content Gallons
Pounds of Steam per Hour @ 212°
Nominal Shipping Weight (lbs)
15 S*
150
120
500
4
14
11
7
123
730
20 S*
200
160
666
5
19
14
9
164
830
25 S*
250
200
843
6
22
18
11
206
900
30 S*
300
240
1000
7
28
22
14
247
1100
36 S*
360
288
1200
9
33
26
17
296
1230
42 S*
420
336
1400
10
39
30
19
346
1490
48 S*
480
384
1600
11
49
35
25
395
1500
55 S*
550
440
1833
13
56
40
27
453
1650
63 S*
630
506
2108
15
63
45
29
519
1800
76 S*
760
608
2533
18
75
54
32
626
1950
85 S*
850
680
2833
20
88
61
49
700
2325
90 S*
900
720
3000
21
88
64
49
742
2325
105 S*
1050
840
3500
25
101
76
52
865
2750
120 S*
1200
960
4000
28
115
85
55
989
3125
135 S*
1350
1080
4500
32
131
97
58
1113
3450
150 S*
1500
1200
5000
35
145
105
60
1236
3800
165 S*
1650
1320
5500
39
159
118
64
1360
4100
180 S*
1800
1440
6000
43
174
130
68
1484
4400
200 S*
2000
1600
6667
47
192
140
74
1649
4800
A150 S*
1500
1200
5000
35
160
120
74
1236
3850
A165 S*
1650
1320
5500
39
168
128
78
1360
4050
A180 S*
1800
1440
6000
43
190
140
81
1484
4300
A200 S*
2000
1600
6667
47
205
150
64
1649
4550
225 S*
2250
1800
7500
53
230
162
87
1855
4800
250 S*
2500
2000
8333
59
252
180
92
2061
5100
275 S*
2750
2200
9167
65
273
196
96
2267
5400
300 S*
3000
2400
10000
71
295
215
100
2473
5700
325 S*
3250
2600
10833
77
318
234
105
2679
6000
350 S*
3500
2800
11667
83
340
251
110
2885
6300
375 S*
3750
3000
12500
89
362
268
115
3091
6600
400 S*
4000
3200
13333
95
383
287
125
3297
8600
425 S*
4250
3400
14167
101
405
304
129
3504
9000
450 S*
4500
3600
15000
107
428
322
132
3710
9350
475 S*
4750
3800
15833
113
450
337
135
3916
9700
500 S*
5000
4000
16667
119
473
352
140
4122
10100
550 S*
5500
4400
18333
131
526
370
147
4534
10800
600 S*
6000
4800
20000
143
574
387
158
4946
11750
A650 S*
6500
5200
21667
155
622
405
166
5359
12500
A700 S*
7000
5600
23333
167
670
430
174
5731
13200
A750 S*
7500
6000
25000
180
722
455
179
6183
13900
A400 S*
4000
3200
13333
95
390
300
165
3297
9300
A450 S*
4500
3600
15000
107
440
325
174
3710
10125
A500 S*
5000
4000
16667
119
486
345
183
4122
10950
A550 S*
5500
4400
18333
131
535
380
199
4534
12250
A600 S*
6000
4800
20000
143
584
405
207
4946
13000
650 S*
6500
5200
21667
155
632
425
215
5359
13800
700 S*
7000
5600
23333
167
680
450
223
5771
14600
750 S*
7500
6000
25000
180
730
470
232
6183
15400
840 S*
8400
6700
27917
200
800
490
399
6935
20000
940 S*
9400
7500
31250
225
900
515
419
7250
20800
1050 S*
10500
8400
35000
250
1000
540
439
8657
21600
1150 S*
11500
9200
38333
275
1100
565
459
9481
22400
1250 S*
12499
9999
41662
300
1200
590
480
10300
23000

* Add G for natural gas or propane O for #2 oil or GO for combination gas &2 oil.

** Weights shown above are for standard ceramic fiber combustion chambers. Boilers with refractory lined combustion chambers, higher pressure ratings and auxiliary equipment can can weigh to 35% more.

NOTE: Equivalent Direct Radiation (EDR), measured in terms of square feet, is a standardized comparison method estimating the output ability of boilers and radiators.

For Steam Systems: 1 square foot EDR will emit 240 BTUs/hr.
*Rating based on approximately 212° F (100° C) temperature and 1-2 psi of pressure.

For Hot Water Systems: 1 square foot EDR will emit 160 BTUs/hr.

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Models and Dimensions


Power Burner Low Pressure Steam Boiler Diagram

  • DIMENSIONS ARE IN INCHES - SUBJECT TO PRODUCTION TOLERANCES AND CHANGE WITHOUT NOTICE. CERTIFIED DIMENSIONS AVAILABLE UPON REQUEST.
  • BOILERS APPROVED FOR INSTALLATION ON NON - COMBUSTIBLE FLOORS ONLY.

1Barometric Damper will be shipped one size smaller than D dimension for stacks up to 25 feet of vertical height (as shown below in column E), full size (same as D dimension) for stacks 25 to 50 feet tall and one size larger for stacks over 50 feet tall. Barometric Damper Tee by others.

2May vary-sizes shown are for UL gas trains at standard supply pressures. Gas connections can be male or female NPT. All other threaded connections are female NPT. Flanges are ANSI 150 lb. SA-105 flat face. Standard right hand construction shown illustrated above. Left hand construction available at no extra charge.

3Flanges are ANSI 150 lb SA-105 flat face. Models A150S - 375S: 6” FLG STD. for U.S. locations, 5” FLG for Canadian locations.

4Standard right hand construction shown illustrated above. Left hand construction available at no extra charge.

Information in the table below is subject to change during website development. Please contact Rite with issues or questions.

BOILER MODEL
A
B
C
COA
D
E
F
G
H
J
K
L
N
O
S
T
Length Jacket
Width Jacket
Height Flush
Height Overall
Stack Dia.
Draft Control
Tube Maint.
Gas Conn.
Steam Supply
Feed Water
Side Space
Power Burner
Blow Down
Head Swing
15 S*
26
27
64
68
6
11
32
15
0.75
2.5
1
8
14
20 S*
31
27
64
68
6
13
32
20
0.75
2.5
1
8
14
25 S*
35
27
64
68
7
13
32
24
0.75
2.5
1
8
14
30 S*
41
27
64
68
8
14
32
30
0.75
2.5
1
8
14
36 S*
46
27
64
68
9
15
32
36
1
2.5
1
8
14
42 S*
43
33
65
69
9
15
32
32
1
3
1.25
10
14
48 S*
47
33
65
69
10
9 BARO
17
32
40
1.00
3 FL
1.25
10
26
1.00
20
55 S*
52
33
65
69
10
9 BARO
18
32
45
1.00
3 FL
1.25
10
26
1.00
20
63 S*
56
33
65
69
10
9 BARO
20
32
49
1.00
3 FL
1.25
10
26
1.00
20
76 S*
64
33
65
69
12
10 BARO
22
32
57
1.00
3 FL
1.25
10
26
1.00
20
85 S*
59
39
78
82
12
10 BARO
22
39
47
1.00
4 FL
1.50
12
26
1.25
26
90 S*
59
39
78
82
12
10 BARO
22
39
47
1.25
4 FL
1.50
12
26
1.25
26
105 S*
65
39
78
82
12
10 BARO
24
39
53
1.25
4 FL
1.50
12
26
1.25
26
120 S*
71
39
78
82
14
12 BARO
26
39
59
1.25
4 FL
1.50
12
31
1.25
26
135 S*
77
39
78
82
14
12 BARO
28
39
65
1.50
4 FL
1.50
12
31
1.25
26
150 S*
83
39
78
82
16
14 BARO
30
39
71
1.50
4 FL
1.50
12
31
1.25
26
165 S*
89
39
78
82
16
14 BARO
32
39
77
1.50
4 FL
1.50
12
31
1.25
26
180 S*
96
39
78
82
16
14 BARO
34
39
84
2.00
4 FL
1.50
12
31
1.25
26
200 S*
103
39
78
82
18
16 BARO
37
39
91
2.00
4 FL
1.50
12
31
1.25
26
A150 S*
69
46
84
88
16
14 BARO
29
40
53
2.00
6 FL
2.00
14
31
1.50
34
A165 S*
73
46
84
88
16
14 BARO
30
40
57
2.00
6 FL
2.00
14
31
1.50
34
A180 S*
79
46
84
88
16
14 BARO
31
40
63
2.00
6 FL
2.00
14
31
1.50
34
A200 S*
83
46
84
88
18
16 BARO
32
40
67
2.00
6 FL
2.00
14
31
1.50
34
225 S*
87
46
84
88
18
16 BARO
38
40
71
2.00
6 FL
2.00
16
31
1.50
34
250 S*
93
46
84
88
20
18 BARO
40
40
77
2.00
6 FL
2.00
16
35
1.50
34
275 S*
99
46
84
88
20
18 BARO
42
40
83
2.00
6 FL
2.00
16
35
1.50
34
300 S*
105
46
84
88
20
18 BARO
44
40
89
2.00
6 FL
2.00
16
35
1.50
34
325 S*
111
46
84
88
22
20 BARO
46
40
95
2.00
6 FL
2.00
16
35
1.50
34
350 S*
117
46
84
88
22
20 BARO
48
40
101
2.50
6 FL
2.00
16
35
1.50
34
375 S*
123
46
84
88
22
20 BARO
50
40
107
2.50
6 FL
2.00
16
35
1.50
34
400 S*
98
57
98
102
24
20 BARO
38
46
80
2.50
8 FL
2.00
16
35
2.00
45
425 S*
103
57
98
102
24
20 BARO
38
46
85
2.00
8 FL
2.00
16
35
2.00
45
450 S*
107
57
98
102
26
24 BARO
41
46
89
2.00
8 FL
2.00
16
35
2.00
45
475 S*
111
57
98
102
26
24 BARO
41
46
93
2.00
8 FL
2.00
16
35
2.00
45
500 S*
116
57
98
102
26
24 BARO
44
46
98
2.00
8 FL
2.00
16
35
2.00
45
550 S*
125
67
98
102
28
24 BARO
47
46
107
2.00
8 FL
2.00
16
35
2.00
45
600 S*
139
57
98
102
28
24 BARO
50
46
117
2.50
8 FL
2.00
16
35
2.00
45
A650 S*
149
57
98
102
28
24 BARO
53
46
127
2.00
8 FL
2.00
16
35
2.00
45
A700 S*
158
57
98
102
28
24 BARO
56
46
136
2.00
8 FL
2.00
16
35
2.00
45
A750 S*
167
57
98
102
30
28 BARO
59
46
147
2.50
8 FL
2.00
16
35
2.00
45
A400 S*
89
67
98
102
22
20 BARO
35
46
72
2.50
8 FL
2.00
16
35
2.00
56
A450 S*
97
67
98
102
24
20 BARO
38
46
80
2.00
8 FL
2.00
16
35
2.00
56
A500 S*
105
67
98
102
26
24 BARO
40
46
88
2.00
8 FL
2.00
16
35
2.00
56
A550 S*
119
67
98
102
26
24 BARO
46
46
102
2.00
8 FL
2.00
16
35
2.00
56
A600 S*
126
67
98
102
28
24 BARO
48
46
109
2.50
8 FL
2.00
16
35
2.00
56
650 S*
134
67
98
102
28
24 BARO
51
46
117
2.00
8 FL
2.00
16
35
2.00
56
700 S*
141
67
98
102
28
24 BARO
53
46
124
2.00
8 FL
2.00
16
35
2.00
56
750 S*
149
67
98
102
30
28 BARO
56
46
132
2.50
8 FL
2.00
16
35
2.00
56
840 S*
138
82
106
110
30
28 BARO
54
54
116
2.50
10 FL
2.00
18
42
2.00
69
940 S*
150
82
106
110
32
28 BARO
58
54
128
2.50
10 FL
2.00
18
42
2.00
69
1050 S*
162
82
106
110
34
28 BARO
62
54
140
3.00
12 FL
2.00
18
42
2.00
69
1150 S*
174
82
106
110
36
28 BARO
66
54
152
3.00
12 FL
2.00
18
42
2.00
69
1250 S*
186
82
106
110
36
28 BARO
70
54
164
3.00
12 FL
2.00
18
42
2.00
69

* Add G for natural gas or propane O for #2 oil or GO for combination gas &2 oil.

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