Weil-McLain 550-141-829/1201, Manual

Page: 17 / 32

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 AE-8403 (available through your
Weil-McLain distributor or sales office):
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.
Connect Steam Piping
CONTINUED
CONDENSATE RECEIVER CAPACITY TABLE
MINIMUM CONDENSATE RECEIVER CAPACITY – GAL.
RECOMMENDED
I=B=R GROSS 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
SGO-3 114 14 4 8 12 16 0.5
SGO-4 150 18 5 11 16 22 0.6
SGO-5 180 22 6 13 19 26 0.7
SGO-6 216 26 8 16 23 31 0.9
SGO-7 246 30 9 18 27 35 1.0
SGO-8 274 33 10 20 30 39 1.1
SGO-9 303 36 11 22 33 44 1.2
* Maximum time to when condensate returns to boiler.