SCOTCH MARINE : DRYBACK : 300 SERIES : SPECIFICATION DATA CHART

Custom manufacturer of engineered packaged boilers and systems, boiler controls and accessories. Major supplier of wood, gas, coal, solid-fuel, and oil-fired steam and hot water boilers, fire-tube & water-tube, and feedwater equipment for all heating & process applications including industrial, dry cleaning, hospital, educational, municipal, military, public and private commercial requirements.

BOILER SPECIFICATIONS (ALL DIMENSIONS ARE IN INCHES)
  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 & @212°F LB/HR 517 690 862 1035 1380 1725 2070 2415 2760 3450
GROSS OUTPUT   MBH 502 670 837 104 1339 1675 2008 2343 2687 3348
FIRING RATE, GAS 1,000 BTU/CFH 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, No.2 oil 140,00O BTU GPH 4.5 6 7.5 9 12 15 18 20.7 24 30
FIRING RATE, #5 & #6 OIL 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 3 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 (VESSEL) 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 OD.   IN 8 8 10 10 12 12 12 16 16 16 F
G FURNACE OD.   IN 16 16 18 18 20 20 20 24 24 24 G
H SHELL ID.   IN 36 36 42 42 48 48 48 54 54 54 H
I WIDTH WITHOUT TRIM   IN 44 44 50 50 56 1/2 56 1/2 56 1/2 62 62 62 I
J WIDTH WITH TRIM   IN 49 49 55 55 61 61 61 68 68 68 J
K LENGTH, FRONT TO REAR   IN 69 84 78 89 99 119 135 117 129 153 K
L LENGTH OVERALL   IN 103 118 113 124 134 154 170 155 167 191 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 53 53 67 O
P WATER SUPPLY LOCATION   IN 18 24 23 27 30 1/2 30 1/2 36 36 33 39 P
Q WATER RETURN LOCATION   IN 45 56 51 59 68 84 1/2 84 78 87 105 Q
R BLOWDOWN LOCATION 15 PSI & UP IN 18 17 18 18 23 23 1/4 23 1/4 25 25 - 66 25 - 89 R
S 1 1/4" SURFACE BLOW-OFF CONNECTION   IN 41 50 36 53 61 39 40 45 41 51 S
T STACK OUTLET LOCATION   IN 58 73 66 77 86 106 122 102 114 138 T
U SUPPLY HEIGHT   IN 51 51 57 57 63 63 63 71 71 75 U
V STACK HEIGHT   IN 54 1/2 54 1/2 60 1/2 60 1/2 68 5/8 68 5/8 68 5/8 77 77 76 3/4 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 36 X
Y DOOR SWING   IN 0 0 23 23 28 28 28 31 31 31 Y
AA TUBE REMOVAL REAR IN 32 47 39 50 58 78 94 66 78 102 AA
BB TUBE REMOVAL FRONT IN 41 56 48 59 63 83 99 73 85 109 BB
  WATER CAPACITY @ NWL   GAL. 123 165 193 233 330 425 502 436 510 628  
WATER CAPACITY FLOODED   GAL. 146 195 225 271 383 493 582 528 606 761
APPROX. SHIPPING WEIGHT (HIGH PRESS.) 150 PSI LBS. 2975 3225 3850 4125 6100 7375 8250 9400 10300 12450
APPROX. SHIPPING WEIGHT (LOW PRESS.) 15 & 30 PSI LBS. 2850 3075 3650 3925 5750 6950 7550 8100 9300 11100
  BOILER HORSEPOWER 15 20 25 30 40 50 60 70 80 100  

BOILER SPECIFICATIONS (ALL DIMENSIONS ARE IN INCHES) - CONTINUED
  BOILER HORSEPOWER 150 200 250 300 350 400 500 600 700 800  
  HEATING SURFACE FIRESIDE SQ. FT. 750 1000 1250 1500 1750 2000 2500 3000 3500 4000  
STEAM OUTPUT FROM & @212°F LB/HR 5175 6900 8625 10350 12075 13800 17250 20700 24150 27600
GROSS OUTPUT   MBH 5021 6695 8369 10042 11716 13390 16738 20085 23432 26780
FIRING RATE, GAS 1,000 BTU/CFH CFH 6300 8400 10500 12600 14700 16800 21000 25200 29400 33600
FIRING RATE, LP GAS 91,500 BTU GPH 68.8 91.8 114.7 137.7 160.6 183.6 229.5 275.4 321 367
FIRING RATE, No.2 oil 140,00O BTU GPH 45 60 75 90 105 120 150 180 210 240
FIRING RATE, #5 & #6 OIL 150,000 BTU GPH 42 56 70 84 98 112 140 168 196 224
A *NOTE: 1 STEAM OUTLET SIZE 150 PSI IN 4 4 6 6 6 6 6 8 8 8 A
A *NOTE: 2 STEAM OUTLET SIZE 15 PSI IN 8 8 10 10 10 12 12 12 12 12 A
B *NOTE: 2 WATER SUPPLY SIZE 30 PSI IN 8 8 8 10 10 10 12 12 12 12 B
C *NOTE: 2 WATER RETURN SIZE 30 PSI IN 6 6 6 8 10 10 10 10 12 12 C
D FEEDWATER CONNECTION   IN 1 1/2 2 2 2 2 2 2 2 2 2 D