SCOTCH MARINE : WETBACK : 400 SERIES : SPECIFICATION DATA CHART

The Series 400 is designed for optimum fuel efficiency and has proven in certified tests to meet and often exceed the efficiencies of 4-pass boilers.

BOILER SPECIFICATIONS (ALL DIMENSIONS ARE IN INCHES)
  BOILER HORSEPOWER 30 40 50 60 70 80 100 125 150 200 250  
  HEATING SURFACE FIRESIDE SQ. FT. 150 200 250 300 350 400 500 625 750 1000 1250  
STEAM OUTPUT FROM & @212°F LB/HR 1035 1380 1725 2070 2415 2760 3450 4313 5175 6900 8625
GROSS OUTPUT   MBH 1004 1339 1674 2009 2343 2678 3348 4184 5021 6695 8369
FIRING RATE, GAS 1,000 BTU/CF CFH 1260 1680 2100 2520 2940 3360 4200 5250 6300 8400 10500
FIRING RATE, LP GAS 91,500 BTU GPH 13.8 18.4 23 27.5 32 36.7 46 57 69 92 115
FIRING RATE, No.2 oil 140,00O BTU GPH 9 12 15 18 21 24 29.9 37.4 45 60 75
FIRING RATE, #5 & #6 OIL 150,000 BTU GPH 8.4 11.2 14 16.8 19.6 22.4 28 35 42 56 70
A *NOTE: 1 STEAM OUTLET SIZE 150 PSI IN 1 1/2 2 2 1/2 2 1/2 3 3 4 4 4 4 6 A
A *NOTE: 2 STEAM OUTLET SIZE 15 PSI IN 4 4 4 6 6 6 8 8 8 8 10 A
B *NOTE: 2 SUPPLY SIZE 30 PSI IN 4 4 4 6 6 6 8 8 8 8 10 B
C *NOTE: 2 RETURN SIZE 30 PSI IN 4 4 4 4 4 4 6 6 6 6 8 C
D FEEDWATER CONNECTION   IN 3/4 3/4 3/4 1 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/2 1 1/2 D
E BOTTOM BLOWDOWN SIZE HIGH PRESS. IN 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 E
E BOTTOM BLOWDOWN SIZE LOW PRESS. & HW IN 1 1/4 1 1/4 1 1/4 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 2 2 2 E
F STACK OUTLET SIZE O.D.   IN 10 10 10 12 12 12 14 14 16 16 18 F
G FURNACE O.D.   IN 14 14 16 18 18 18 22 26 26 30 34 G
H SHELL I.D.   IN 40 40 44 48 48 48 54 60 60 66 84 H
I SUPPLY HEIGHT   IN 55 1/4 55 3/8 59 3/4 63 5/8 66 5/8 66 5/8 74 3/4 81 3/4 81 3/4 90 3/4 109 I
J WIDTH WITHOUT TRIM   IN 45 1/4 45 1/4 50 53 5/8 53 5/8 53 5/8 60 66 1/2 66 1/2 72 1/2 90 3/4 J
K WIDTH WITH TRIM   IN 58 58 60 66 66 66 72 79 79 84 103 K
L SKID WIDTH   IN 34 34 36 40 40 40 44 48 48 51 64 L
M END OF SKID TO FRONT PLATE   IN 13 1/2 14 1/4 15 1/4 15 1/4 15 1/4 15 1/4 21 3/4 25 1/8 25 1/8 21 1/4 28 5/8 M
N VESSEL SHELL TO FLOOR   IN 12 12 12 12 12 12 14 15 15 18 18 N
O SKID LENGTH   IN 81 99 102 102 102 114 114 132 156 168 180 O
P STACK OUTLET HEIGHT   IN 58 5/8 58 5/8 62 5/8 66 5/8 66 5/8 66 5/8 74 3/4 81 3/4 81 3/4 90 3/4 109 P
Q BLOWDOWN LOCATIONS   IN 35 3/4 41 31 3/4 29 3/4 29 3/4 29 3/4 29 3/4-66 32 7/8-78 32 7/8-102 33 7/8-120 35 7/8-120 Q
R STEAM OUT LOCATION 15 PSI & UP IN 38 3/4 41 3/4 40 1/4 49 3/4 49 3/4 58 3/4 55 3/4 55 7/8 73 7/8 80 3/4 72 R
S SUPPLY LOCATION   IN 20 1/4 20 3/4 33 37 3/4 37 3/4 43 3/4 32 3/4 32 32 46 1/2 54 3/4 S
T RETURN LOCATION   IN 59 1/4 74 3/4 78 85 3/4 85 3/4 97 3/4 90 3/4 102 114 130 1/2 144 3/4 T
U BURNER PROJECTION FROM FRONT PLATE IN 31 5/8 31 5/8 31 3/8 31 3/8 31 3/8 31 3/8 31 3/8 34 3/4 34 3/4 34 3/4 47 1/2 U
V TUBE REMOVABLE FRONT IN 68 85 88 91 91 102 96 108 132 150 150 V
W STACK OUTLET LOCATION   IN 78 1/2 95 3/4 98 3/4 104 3/4 104 3/4 116 3/4 111 3/4 123 7/8 148 7/8 168 3/4 172 7/8 W
X APPROX. OVERALL LENGTH STD. BURNER IN 117 134 137 144 144 160 152 167 193 214 223 X
Y 1 1/4" SURFACE BLOW-OFF CONNECTION   IN 29 3/4 29 3/4 31 1/4 40 3/4 40 3/4 46 3/4 45 3/4 41 7/8 58 7/8 61 3/8 57 3/8 Y
  APPROX. SHIPPING WEIGHT 150 PSI LBS. 3500 4100 4500 5965 6200 6900 9500 10400 11800 16600 27100  
APPROX. SHIPPING WEIGHT 15 & 30 PSI LBS. 3400 4000 4500 5665 5900 6200 7200 9400 10800 13700 25600
WATER CAPACITY @ NWL   GAL. 213 300 315 400 381 436 484 676 785 1126 1874
WATER CAPACITY FLOODED   GAL. 250 323 385 453 455 499 578 788 1027 1350 2276
  BOILER HORSEPOWER 30 40 50 60 70 80 100 125 150 200 250  

BOILER SPECIFICATIONS (ALL DIMENSIONS ARE IN INCHES) - CONTINUED
 
BOILER HORSEPOWER
 300 350 400 500 600 700 750 800 900 1000 1200 1500  
  HEATING SURFACE FIRESIDE SQ. FT. 1500 1750 2000 2500 3000 3500 3750 4000 4500 5000 6000 7500  
STEAM OUTPUT FROM & @212°F LB/HR 10350 12075 13800 17250 20700 24150 25875 27600 31050 34500 41400 51750
GROSS OUTPUT   MBH 10043 11716 13390 16738 20085 23432 25106 26780 30128 33475 40170 50213
FIRING RATE, GAS 1,000 BTU/CF CFH 12600 14700 16800 21000 25200 29400 31500 33600 37800 42000 50400 63000
FIRING RATE, LP GAS 91,500 BTU GPH 138 160 184 230 275 320 344 368 413 460 550 688
FIRING RATE, No.2 oil 140,00O BTU GPH 90 105 120 150 180 210 225 240 270 300 360 450
FIRING RATE, #5 & #6 OIL 150,000 BTU GPH 84 98 112 140 168 196 210 224 252 280 336 420