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Page 19
SERIES 28A BOILER INSTALLATION AND OPERATION INSTRUCTIONS
Minimum Feed Water Condensate Receiver
Boiler
I=B=R Gross Output Evaporation Rate
Pumping Rate Capacity
Model MBH
kW
GPM
L/hr
GPM
L/hr
Gallons
Liters
28A-S-4 900
264
1.9
7.3
3.9
14.8
37
140
28A-S-5 1166
342
2.5
9.5
5.0
18.9
48
182
28A-S-6 1433
420
3.1
11.7
6.2
23.5
59
223
28A-S-7 1699
498
3.7
13.8
7.3
27.6
69
261
28A-S-8 1965
576
4.2
16.0
8.4
31.8
80
303
28A-S-9 2232
654
4.8
18.1
9.6
36.3
91
345
28A-S-10 2498
732
5.4
20.3
10.7
40.5
102
386
28A-S-11 2764
810
5.9
22.5
11.9
45.1
113
428
28A-S-12 3031
888
6.5
24.7
13.0
49.2
124
469
28A-S-13 3297
966
7.1
26.8
14.2
53.8
135
511
28A-S-14 3563
1044
7.7
29.0
15.3
57.9
145
549
28A-S-15 3830
1122
8.2
31.2
16.5
62.5
156
591
28A-S-16 4096
1200
8.8
33.3
17.6
66.6
167
632
28A-S-17 4362
1278
9.4
35.5
18.7
70.8
178
674
28A-S-18 4629
1356
9.9
37.6
19.9
75.3
189
716
Figure 21 - Typical Single Boiler Steam Piping
Table 9 - Steam Boiler Capacities
Note: These recommendations are considered normal for compact buildings. Where buildings are spread out,
additional receiver capacity may be necessary because of the extended time required for condensate to return to
the receiver.