BOILER & WELDING CO., INC.

SERIES 200
2-PASS SCOTCH MARINE DESIGN
HIGH PRESSURE BOILER
Capacities from 15 to 800 BHP.
Full Rear Access 502 to 26780 MBTU/HR.

STEAM
Pressures to 15-300 PSI.

HOT WATER
Section I and Section IV

Large combustion chamber with

SKID MOUNTED low heat release for complete combustion.
MODULAR PACKAGED
SERIES 200
Inspected and
registered with the
National Board of
Boiler & Pressure
Vessel Inspectors.

Designed,
constructed and
stamped in
accordance with
the requirements
of the ASME
Boiler Codes.

BOILER SPECIFICATIONS
BOILER HORSEPOWER 15 20 25 30 40 50 60 70 80 100
HEATING SURFACE FIRESIDE SQ. FT. 75 100 125 150 200 250 300 350 400 500
STEAM OUTPUT FROM &@ 212F LBS/HR 517 690 862 1035 1380 1725 2070 2415 2760 3450
GROSS OUTPUT MBH 502 670 837 1004 1339 1675 2008 2343 2678 3348
FIRING RATE GAS 1,000 BTU CFH 630 840 1050 1260 1680 2100 2520 2940 3360 4200
FIRING RATE LP GAS 91,500 BTU GPH 6.9 9.2 11.5 13.8 18.4 23 27.5 32.1 36.7 45.9
FIRING RATE OIL #2 140,000 BTU GPH 4.5 6 7.5 9 12 15 18 20.7 24 30
FIRING RATE OIL #5 & #6 150,000 BTU GPH 4.2 5.6 7 8.4 11.2 14 16.8 19.3 22.4 28

A *NOTE: 1 STEAM OUTLET SIZE 150 PSI IN 1 1/4 1 1/4 1 1/4 1 1/2 1 1/2 2 2 2 1/2 2 1/2 3 A
A *NOTE: 2 STEAM OUTLET SIZE 15 PSI IN 2 1/2 3 3 4 4 4 6 6 6 6 A
B *NOTE: 2 WATER SUPPLY SIZE 30 PSI IN 2 1/2 3 3 3 4 4 4 6 6 6 B
C *NOTE: 2 WATER RETURN SIZE 30 PSI IN 2 2 1/2 3 3 3 4 4 4 4 6 C
D FEEDWATER CONNECTION IN 1 1 1 1 1 1 1 1 1/4 1 1/4 1 1/4 D
E BLOWDOWN CONNECTION BOTTOM IN 1 1 1 1 1 1/4 1 1/4 1 1/4 1 1/4 (2) 1 1/2 (2) 1 1/2 E
F STACK OUTLET SIZE O.D. IN 8 8 10 10 12 12 12 16 16 16 F
G FURNACE O.D. IN 16 16 18 18 20 20 20 24 24 24 G
H SHELL I.D. IN 36 36 42 42 48 48 48 54 54 54 H
I WIDTH WITHOUT TRIM IN 44 44 50 50 56 56 56 62 62 62 I
J WIDTH WITH TRIM IN 49 49 55 55 61 61 61 67 67 67 J
K LENGTH, FRONT TO REAR IN 71 86 78 89 99 119 135 115 127 151 K
L LENGTH OVERALL IN 106 121 113 124 134 154 170 150 162 188 L
M SKID LENGTH IN 72 90 84 96 102 120 138 117 132 150 M
N SKID WIDTH IN 30 30 36 36 40 40 40 44 44 44 N
O STEAM SUPPLY LOCATION IN 29 26 30 35 40 48 48 50 50 65 O
P WATER SUPPLY LOCATION IN 18 24 23 27 30 30 36 31 37 37 P
Q WATER RETURN LOCATION IN 45 56 51 59 68 84 90 78 88 103 Q
R BLOWDOWN LOCATION 15 PSI AND UP IN 20 20 18 18 23 23 23 23 23-66 23-89 R
S SURFACE BLOW-OFF CONNECTION IN 23 9/16 23 9/16 24 9/16 24 9/16 25 13/16 25 13/16 25 13/16 29 9/16 29 9/16 29 9/16 S
T STACK OUTLET LOCATION IN 21 25 25 26 25 23 25 26 29 23 T
U SUPPLY HEIGHT IN 51 51 57 57 63 63 63 72 72 75 U
V STACK HEIGHT IN 54.63 54.63 60.63 60.63 66.63 66.63 66.63 75 75 75 V
W SHELL TO FLOOR HEIGHT IN 12 12 12 12 12 12 12 14 14 14 W
X BURNER PROJECTION IN 32 32 32 32 32 32 32 32 32 34 X
Y DOOR SWING IN 22 22 25 25 28 28 28 31 31 31 Y
Z SKID TO FRONT PLATE IN 19.25 23.25 24.25 25.25 23.25 21.25 23.25 26.25 29.25 23.25 Z
AA TUBE REMOVAL REAR IN 40 55 47 58 64 84 100 76 88 112 AA
BB TUBE REMOVAL FRONT IN 47 62 54 65 71 91 107 83 95 119 BB

WATER CAPACITY - STEAM SERIES NWL GALS 123 165 193 233 330 425 511 436 510 628
WATER CAPACITY - WATER SERIES FLOODED GALS 146 195 225 271 383 493 582 528 606 761
SHIPPING WEIGHT - HIGH PRESS. DRY LBS 2975 3225 3850 4125 6100 7375 8250 9400 10300 12450
SHIPPING WEIGHT - LOW PRESS. DRY LBS 2850 3075 3650 3450 5750 6950 7550 8100 9300 11100

BOILER HORSEPOWER 15 20 25 30 40 50 60 70 80 100

NOTE 1: 3 & ABOVE ARE 300# FLANGE. DIMENSIONS SUBJECT TO CHANGE WITHOUT NOTICE.
NOTE 2: 4 & ABOVE ARE 150# FLANGE. ALL DIMENSIONS ARE IN INCHES.
DIMENSIONS L & X ARE VARIABLES OF FINAL BURNER SELECTION. CERTIFIED DRAWING AVAILABLE UPON REQUEST.
 EXHAUST
FULLY TRIMMED WITH
STACK
ALL SAFETY CONTROLS AND PIPING

HIGH TEMP.
DAVITED & HINGED REFRACTORY LINED
ACCESS DOORS REAR DOOR
40 HP & ABOVE

GAS, OIL
OR COMBINATION
FORCED DRAFT BURNERS

FLAME
SIGHT PORT
UL. LISTED
BURNER

FULLY AUTOMATED
CONTROLS ALL A.S.M.E. CODE
PIPING TO SECOND VALVE
EXTRA HEAVY
SKIDS AND SUPPORTS

125 150 200 250 300 350 400 500 600 700 800
625 750 1000 1250 1500 1750 2000 2500 3000 3500 4000
4312 5175 6900 8625 10350 12075 13800 17250 20700 24150 27600
4184 5021 6695 8369 10042 11716 13390 16738 20085 23432 26780
5250 6300 8400 10500 12600 14700 16800 21000 25200 29400 33600
57.3 68.8 91.8 114.7 137.7 160.6 183.6 229.5 275.4 321 367
37.5 45 60 75 90 105 120 150 180 210 240
35 42 56 70 84 98 112 140 168 196 224

A 4 4 4 6 6 6 6 8 8 8 8 A BOILER DESIGN: Two-Pass Dry-Back

A 8 8 8 10 10 10 12 12 12 12 12 A design. Pressure designs for steam are
B 6 8 8 8 10 10 10 12 12 12 12 B 15-300 psi. 100-600 hp. 250 psi. max.
C 6 6 6 6 8 10 10 10 10 12 12 C for 700-1500 hp. and 200 psi. max. for
D 1 1/2 1 1/2 2 2 2 2 2 2 2 1/2 2 1/2 2 1/2 D 1800-2000 hp.
E (2) 1 1/2 (2) 1 1/2 (2) 2 (2) 2 (2) 2 (2) 2 (2) 2 (2) 2 (2) 2 (2) 2 (2) 2 E
STEAM MODEL TRIM: Safety relief
F 16 16 20 20 20 24 24 24 26 26 30 F
valve, operating pressure control, high
G 26 26 34 34 34 42 42 42 48 48 48 G
limit pressure control with manual reset,
H 60 60 75.5 75.5 75.5 90 90 90 102 102 102 H
steam pressure gauge with syphon,
I 68.5 68.5 84.5 84.5 84.5 99 99 99 111 111 111 I combination pump control and low water
J 73 73 93 93 93 103 103 103 116 116 116 J cut-off with gauge glass assembly and
K 175 195 163 194 215 177 187 223 239 271 307 K drain valve, auxiliary low water cut-off
L 214 234 209 240 261 224 235 268 310 342 380 L with manual reset.
M 174 198 168 192 216 168 180 220 240 282 318 M
N 48 48 60 60 60 70 70 70 78 78 78 N HOT WATER MODEL TRIM: Safety
O 69 82 57.87 82.87 94 75 77 100 86 7/8 98 7/8 98 7/8 O relief valve, operating temperature con-
P 48 48 37 48 53 39 48 54 60 64 7/8 64 7/8 P trol, high limit temperature control with
Q 120 132 115 138 161 117 132 162 174 192 7/8 226 7/8 Q manual reset, combination pressure &
R 25-112 26-130 25-94 27 - 125 31-135 30-99 28-108 27-144 39-142 39-174 39-206 R temperature gauge, low water
cut-off control with manual reset.
S 31 7/8 31 7/8 36 1/2 36 1/2 36 1/2 43.13 43.13 43.13 46 46 46 S
T 25 29 34 27 30 25 25 29 38 48 50 T
BURNER: Matched UL listed forced
U 82 82 98 98 98 115 115 115 127 127 127 U
draft power burners with factory pre-
V 82 82 99 99 99 116 116 116 128 128 128 V piped, wired and tested fuel configura-
W 15 15 15 15 15 18 18 18 18 18 18 W tions for natural gas, propane (LP) gas,
X 35 35 43 43 43 43 43 40 67 67 69 X No. 2 (diesel) oil, or combination of both
Y 34 34 43 43 43 50 50 50 57 57 57 Y gas/oil.
Z 23.25 27.25 34.13 27.12 30.12 25.125 27.125 31.125 36.125 46.125 34.125 Z
AA 131 151 117 148 169 124 135 171 181 213 245 AA
BB 141 161 124 155 176 131 143 179 189 221 253 BB

1000 1142 1274 1552 1764 1684 1872 2300 2938 3439 3941
1160 1326 1547 1895 2153 2133 2364 2915 4071 4766 5461
15000 16500 17900 25700 28000 32000 33900 39900 47000 54300 58000
14350 15800 16500 23900 25250 31000 33000 38800 47000 54300 58000

125 150 200 250 300 350 400 500 600 700 800
 STANDARD FEATURES
Boiler is of the two-pass, scotch type, built and stamped in accordance with the requirements of the
ASME Code, and listed by the National Board of Boilers and Pressure Vessel Inspectors.

Large combustion chamber with low heat release for complete combustion.

Smoke box is front-mounted with slip-on stack connector.

Access to fireside is accomplished with hinged and davit rear door and with split front doors. Flame
observation ports are on front and rear.

Openings for clean-out inspection of waterside are provided with 3 x 4 hand holes, and with
12 x 16manholes (80 HP up).

Insulated with 2 high-density mineral wool, lagged with 22 gauge grip jacketing, baked on epoxy
enamel to resist chipping and fading.

Firetubes are rolled and beaded on power boilers, expanded and flared on low pressure boilers.

Supports include lifting lugs securely welded to the top of shell; structural steel support legs on
skids support the boiler so that special foundations are not required.

Minimum Maintenance with Rigged Construction for Extra-Long Life

Standard Steam Trim Standard Water Trim

Operating & High Limit pressure control Operating & High limit temperature control

Modulating pressure control (when appl.) Modulating temperature control (when appl.)

Water column with gauge glass, combination Probe type low water cut-off control
low water cut-off & pump control
Combination pressure, temperature, altitude gauge
L.W.C.O. Control w/ 2nd AUX Probe
Steam pressure gauge, syphon & test cock Hot water return baffle for shock resistance

Water column drain valve Safety relief valve(s) per ASME Code
HBC-09502
Safety relief valve(s) per ASME Code 07/2014

HURST BOILER
& Welding Co., Inc.