Connect Steam Piping CONTINUED
Optional reservoir piping:
Modern steam boilers are designed to steam for less time than older, larger boilers. When replacing an older steam boiler, the system condensate return time may be longer than the steaming time. This can cause the following problems:
•Boilers fitted with an automatic water feed could overfill.
•Units fitted with only a low water cutoff would shut down and cycle while waiting for condensate to return.
To size and install reservoir piping, see FIGURE 11 and Bulletin
1.Pipe boiler as shown on pages 14 through 16.
2.Use 8" diameter reservoir pipe.
3.Locate centerline of reservoir pipe 1" below 26 7/8 " boiler waterline.
CONDENSATE RECEIVER CAPACITY TABLE
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| MINIMUM CONDENSATE RECEIVER CAPACITY – GAL. |
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| RECOMMENDED |
| I=B=R GROSS |
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| CONDENSATE |
| OUTPUT | GALLONS | 15 MIN.* | 30 MIN.* | 45 MIN.* | 60 MIN.* | FEED PUMPING RATE |
BOILER | LBS STEAM | CONDENSATE | BOILER | BOILER | BOILER | BOILER | GPM |
MODEL | PER HOUR | PER HOUR | OPERATION | OPERATION | OPERATION | OPERATION | AT 15 PSI |
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114 | 14 | 4 | 8 | 12 | 16 | 0.5 | |
150 | 18 | 5 | 11 | 16 | 22 | 0.6 | |
180 | 22 | 6 | 13 | 19 | 26 | 0.7 | |
216 | 26 | 8 | 16 | 23 | 31 | 0.9 | |
246 | 30 | 9 | 18 | 27 | 35 | 1.0 | |
274 | 33 | 10 | 20 | 30 | 39 | 1.1 | |
303 | 36 | 11 | 22 | 33 | 44 | 1.2 | |
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* Maximum time to when condensate returns to boiler.