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Weil-McLain SGO SERIES 4 OIL-FIRED STEAM BOILER SGO-7 Residential Boilers

User Manual - Page 23

For SGO SERIES 4 OIL-FIRED STEAM BOILER SGO-7.

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SGO SERIES 4 OIL-FIRED STEAM BOILER SGO-7 photo
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Figure฀16 Typical piping (one riser shown on boiler)
Part number 550-142-330/0421
23
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 4 — Boiler Manual
SERVICE฀TECHNICIAN฀ONLY฀—฀read฀and฀follow฀completely.
Table 6 Condensate receiver capacity
Boiler
Model
Gross฀Output฀
lbs฀steam฀
per฀hour
Gallons฀
condensate฀
per฀hour
Minimum฀condensate฀receiver฀capacity฀–฀gal.
Recommended฀
condensate฀feed฀
pumping฀rate฀gpm฀at฀
15฀psi
15฀Min.*฀
Boiler฀
operation
30฀Min.*฀
Boiler฀
operation
45฀Min.*฀
Boiler฀
operation
60฀Min.*฀
Boiler฀
operation
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.
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 :
1. Pipe boiler as shown on page 20 through page 22.
2. Use 8" diameter reservoir pipe.
3. Locate centerline of reservoir pipe 1" below 26
7
/8" boiler waterline.
Connect steam piping (continued)
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