Original message
| beginner
 |  "steam heating system"
, posted Sat 13 Aug 07:51  
What cause banging noise in a steam heating system? Is it the most upper floor valve is not openning up at the radiator? Or is it the water is stuck in the piping somewhere? I haven't have a chance to look at it yet. The problem was addressed to me last year from a friend. It is a one pipe system.
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Replies:
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| OldTech
| "Re(1):steam heating system" , posted Sat 13 Aug 15:56
There are many reasons this might occur. One is as you mentioned improper grading of pipes so that water doesn't run back to the boiler and when steam hits the water it makes a knocking noise. Sometimes it is the expansion of the pipes resting on wood framing etc and it will knock. Make sure the pressure switch and pigtail are clean and set to cut off as low as possible... probably about 1 LB with a 1/2 LB differential. Radiators should be graded toward the supply line so condensed steam can return to the boiler.
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| | beginner
| "Re(2):steam heating system" , posted Sat 13 Aug 17:18
Thanks! I will check the system in Sept.
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| | rustymike
| "Re(3):steam heating system" , posted Tue 16 Aug 16:53
quote:
Thanks! I will check the system in Sept.
...
From what your saying, I would look at checking your rad air vents.
below is info from Watts Regulator on their brand of steam rad air vent.
Series SV (1⁄8" – 3⁄4")
Steam Air Vents
• Designed to vent air on non-vacuum steam heating systems
• Used on radiators, convectors, and steam mains
SVA Models
SV – Size: 1⁄8" (3mm) non-adjustable angle connection
SVA – Size: 1⁄8" (3mm), adjustable angle connection
SVS-1 – Size: 1⁄8" (3mm), non-adjustable
SVS-2 – Size: 1⁄4" (8mm), non-adjustable straight connection
SVS-3 – Size: 3⁄4" male inlet or 1⁄2" female inlet connection (20 or 15mm), nonadjustable straight connection
No matter how idiot proof you make something better idiots will always try and screw around with it!
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| | KennyD
| "Re(3):steam heating system" , posted Sun 14 Aug 14:59
This book has helped me very much in the overall understanding of steam heating.
http://www.heatinghelp.com/shopcart/product.cfm?category=2-3
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