Model 4
1500 - 6000 MBTU/hr
Rev. 03-08
Section B2-11
Table
B2-3.
Model
4
Steam Ratings
Boiler
SIZE
1500 2000 2500 3000 3500 4000 4500
5000
6000
Ratings [Note
A]
Rated
Capaci
ty - S t e a m
(lbs
.
s
team/hr
from & at 212
o
F.)
1,237 1,649 2,062 2,474 2,887 3,299 3,711
4,124
4,949
Rated Steam
Capaci
ty [kg/h r from and
at
100
C
]
461.7
615.5
769.6
923.4
1,077.5
1,231.3
1,385.0
1,539.2
1,847.2
Output Btu/hr [1,000
Btu/h]
1,200 1,600 2,000 2,400 2,800 3,200 3,600
4,000
4,800
Output Kcal/Hr [1,000
Kcal/h]
302 403 504 605 706 806 907
1,007
1,210
Output
KW
348 464 580 696 812 928 1,044
1,160
1,392
Approximate Fuel
C
on s um p t ion At Ra t ed
C
apac ity [ In put -
N
ot e
B]
Natural Gas [ft
3
/hr] - 15#
Steam
1,511 1,538 2,500 3,038 3,487 4,025 4,494
5,050
6,052
Natural Gas [ft
3
/hr] - 150#
Steam
1,572 2,133 2,597 3,117 3,590 4,155 4,657
5,194
6,233
Natural Gas [m
3
/hr] - 15#
Steam
42.8 43.5 70.8 86 98.7 114.0 127.0
143.0
171.4
Natural Gas [m
3
/hr] - 150#
Steam
44.5 60.4 73.5 88.3 101.6 117.6 131.8
147.0
176.5
Propane Gas [ft
3
/hr] - 15#
Steam
604 615 1,000 1,215 1,395 1,610 1,798
2,020
2,421
Propane Gas [ft
3
/hr] - 150#
Steam
629 853 1,039 1,247 1,436 1,662 1,863
2,078
2,493
Propane Gas [m
3
/hr] - 15#
Steam
17 17.4 28.3 34.4 39.5 45.6 51
57.2
68.5
Propane Gas [m
3
/hr] - 150#
Steam
17.8 24.1 29.4 35.3 40.7 47 52.7
58.8
70.6
No.2 Oil Fuel - 15# Steam,
gph
10 14 17 21 24 28 31
35
42
No.2 Oil Fuel - 150# Steam,
gph
11 15 18 22 25 28.9 32
36
43
No.2 Oil Fuel - 15# Steam,
liters/hour
38 53 64 79 91 106 117
132
159
No.2 Oil Fuel - 150# Steam,
liters/hour
41 56 68 82 95 109 121
136
163
Pow
er Requirements - 3 Phase 60 Hz Standard [Note
C]
Blower Motor HP - Gas
Firing
3/4 1 1-1/2 2 2 3 3
3
5
Blower Motor HP - Oil or
Combinati
on
1-1/2 1-1/2 2 2 3 5 3
3
5
Oil Pump for Oil or
C
ombination
Belt Driven from the Blower
Motor
Minimum
Ampa city
Blower Motor - Gas Firing Only,
230V
1.53 3.3 4.7 6 6 9 9
9
15
Blower Motor - Gas Firing Only,
460V
0.77 1.7 2.4 3 3 4.5 4.5
4.5
7.5
Blower Motor - Oil or Combination,
230V
4.7 4.7 6 6 9 15 9
9
15
Blower Motor - Oil or Combination,
460V
2.4 2.4 3 3 4.5 7.5 4.5
4.5
7.5
Control
C
irc
ui
t
1.7 1.7 1.7 1.9 1.9 1.9 2.4
2.4
2.4
Weights
Operating
W
eight,
lbs
.
3,758 3,758 4,566 4,566 5,175 5,175 5,991
5,991
6,900
Operating
W
eight,
k
g
1,399 1,399 1,704 1,704 1,932 1,932 2,236
2,236
2,575
Water
C
on t e n t Nor ma l ,
gallons
79 79 104 104 130 130 156
156
181
Water
C
on t e n t Nor ma l ,
l
iters
299 299 394 394 492 492 591
591
685
Water
C
ontent Flooded,
gallons
109 109 145 145 177 177 213
213
245
Water
C
ontent Flooded,
liters
413 413 549 549 670 670 806
806
927
Shipping Weight, approxim ate
lbs.
3,100 3,100 3,700 3,700 4,100 4,100 4,700
4,700
5,400
Shipping Weight, approxim ate
kg
1,157 1,157 1,381 1,381 1,530 1,530 1,754
1,754
2,015
Notes:
A. Ratings shown for elevation to 1000 Feet. For ratings above 1000 Feet,
c
ontact your local Cleaver-Brooks
Representative.
B. Input calculated
w
ith
N
at. Gas @ 1000 Btu/ft
3,
Propane @ 2500
Btu/f
t
3,
and Oil @
140,000Btu/gal.
C
. For altitudes above 1000 Feet, contact your
loc
al
C
leaver-Brooks authorized representative for
verifi
cati on of capacity
rating.
Table
B2-4.
Recommended Steam Nozzle Size (to maintain
4000 to 5000
fpm nozzle
velocity)
Operating
Pressure
(PSIG)
BO ILER
SIZE
1500 2000 2500 3000 3500 4000
4500
5000
6000
15 4 4 6 6 6 6 8
8
8
20 3 4 4 6 6 6 8
8
8
30 3 4 4 4 4 6 6
6
6
40 2-1/2 3 3 4 4 4 6
6
6
50 2-1/2 3 3 4 4 4 4
4
6
65 2-1/2 2-1/2 3 3 3 4 4
4
4
75 2-1/2 2-1/2 3 3 3 4 4
4
4
95 -
125
A
2-1/2 2-1/2 3 3 3 3 4
4
4
150 1-1/2 2 2 2-1/2 2-1/2 2-1/2
3
3
3
200 1-1/2 1-1/2 1-1/2 2 2 2-1/2
2-1/2
2-1/2
3
250 -
400 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2
2
2-1/2
A.
Standard nozzle size for 150 PSIG MAWP Boiler
Design
Example 1: Size 3500, 150# boiler to operate @ 30 PSIG requires 4" steam nozzle in lieu
of
standard 3"
nozzle.
Example 2: Size 3500, 150# boiler to operate @ 200 PSIG requires 2" steam nozzle in lieu
of
standard 3"
nozzle.
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