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Joined on February 3, 2007

Last Post on August 22, 2014

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vacuum breaker

@ February 7, 2012 4:20 PM in vacuum breaker

Peerless boiler, low press steam 2 psi  1 pipe.  System has Hoffman boiler feed pump.  The vacuum breaker on the boiler failed, boiler was in a vacuum, water level dropped, the boiler feed control had turned on the pump but water would not go into boiler ?   After replacing vacuum breaker problem went away. I think I forgot what was going on here. Any ideas would be appreciated.  29 hp boiler / 50 gal boiler feed

pump sizing

@ February 18, 2010 5:54 PM in checking pump sizing

Suspect this problem on 2nd floor has always been there, the bldg goes through 1 mtc. man a year. No past record keeping. Have found some good info through watts , taco and Cal Steam, today.  thanks all !

no flow

@ February 18, 2010 8:22 AM in checking pump sizing

I have no flow on part of 2nd floor, bled out air no change

air bound

@ February 17, 2010 10:53 PM in flow prob

Make sure pumps are off when bleeding air, than bump them on and off, keep fill press. high while bleeding.  If you dont have a fast fill, fill with garden hose attached to city press.( check to see if all equip. is rated for city press.)  Sometimes it's a matter of just waiting for air to find its way to highest point. If you have a compression tank make sure it's not flooded.

checking pump sizing

@ February 17, 2010 8:30 PM in checking pump sizing

I Inherited a bldg with rad floor heating (PEX Tubing)  any one know of any pipe T.E.L. sizing charts that I could use to to verify If my ft/head at my pump is adequate.  There are no mech prints.  I have 27 rooms, dont knowhow much tubing is under floor.


@ January 13, 2010 7:41 PM in boiler feed pump

I may have written my post incorrectly several days ago, I was hoping to get help with a boiler feed pump problem  RJ.

boiler feed pump

@ January 11, 2010 8:10 PM in boiler feed pump

Equipment:  Peerless 211A-07 boiler
Hoffman Duplex feed pump, McDonald Miller l.w.c.o./pump control
I have a one pipe steam system with the return header in the boiler room above the boiler water line with a master f & t trap.  The problem is, the boiler runs for awhile, the pump control activates the feed pump and sometimes the low water cutoff part of the controller shuts off the burners.  I have tried different settings of the circuit setters on the pump outlets.  Still having problems.
Also, due to improper header piping, gas pressure has to be set low to keep from entraining water up thru steam header.

feed pump

@ January 11, 2010 7:01 PM in feed pump

peerless boiler

feed pump

@ October 4, 2009 8:40 PM in Boiler feed pump

Thanks for the detailed info.  Engineer spec-d feed pump , equip. already ordered

feed pump

@ October 4, 2009 2:17 PM in Boiler feed pump

The old boiler held more water than the newer Peerless, that is why we went with the feed pump.

Boiler feed pump

@ October 4, 2009 12:59 PM in Boiler feed pump

Installing boiler feed pump on 1 pipe system, how close does pump need to be to Peerless boiler. have 5 dry vertical returns currently connected to a header which ties into boiler return line. Would like to install pump around corner from boiler ,about 15 ft. return lines are 1-1/4 what size should main return to boiler feed tank be ?. what size pump discharge line. Boiler is 211-A-07  tank is Hoffman Duplex 50 gallon.

one pipe

@ August 16, 2009 8:16 PM in one pipe

Contractor remodeling 10th floor of 80 yr old bldg (one pipe steam system), architect wants to relocate radiator location and use steamview steel radiators.  Old cast iron radiators were approx. 18" from riser.  New location to be approx. 15' from riser with 4- 90 degree turns.  Will this work if pipe size is increased?  Would like Dan's input on this one if possible.

@ July 31, 2009 5:18 PM in Copper lines for radiators

Thanks for your inputs. I am on my 2nd Lost art book , wore out the 1rst one. Steamin since 1974. Just thought I would get some 2nd opinions ,I have learned after 35 yrs. in the trade, never be to proud to ask a question.

copper lines on radiators. (1 pipe steam)

@ July 30, 2009 11:15 PM in Copper lines for radiators

I am replacing old cast iron radiators with new steamview steel tube radiators in a 90 yr. old 11 story bldg. Have 2 problems. (1) New radiators are relocated approx. 16 ft. from there respective risers, the old cast radiators were about 18 inches away at 1 inch pipe. Not sure if pipe should stay at 1 inch. (2) Do to little room to run piping, thinking of running small amounts of horiz. pipe to rads. using type L copper with brass nipples. I have used this in the past on industrial steam tables with success. Any suggestions?

steel radiators

@ July 23, 2009 5:05 PM in steel radiators.

After removing cast iron column type radiators from old Pacific Heights bldg. in San Francisco, have some questions. contractor wants to use steel vertical tube radiators ( Any pros or cons. the system is a 90 yr. old 1 pipe down flow. Currently operating at 2 psig. also contractor wants to change a small amount of piping close to radiators to copper to allow piping to fit closer to wall. Cast iron to copper to steel, does'nt sound to good.

@ May 13, 2009 8:17 PM in leak in boiler

Thanks. Boiler is 15 yrs old. Suspecting 2 things 1. not proper swing joints at header and or to much city water into boiler no boiler feed pump.

leak in boiler

@ May 13, 2009 7:58 PM in leak in boiler

Have a Peerless 211A 07 7 section steam boiler, with a small leak coming from the front left of boiler above the burners. Unable to determine at this time if it is a crack in a section or a leaking gasket. Any one had any luck with boiler sealer products like Hercules boiler seal for a long term repair. This is aone pipe system so any left over chemical by-products would end up going through #40 air vents in occupied spaces.

Gas pressure.

@ May 7, 2009 11:50 PM in Laars

Is there any new gas appliances operating off the gas meter. Have your utility co. check gas pressure and gas meter. Tele. Larrs locks out on ignition failure only.

If autofilled

@ May 4, 2009 8:57 PM in Steam Boiler Overfilling

I have seen some boilers overfill if the M-M SA101-- fill valve strainer or entire valve is plugged up. The strainer is removeable. Also the fill line may be plugged where it ties into boiler return line. In both cases the automatic fill valve sees a big pressure drop holding the valve disc off the seat, overfilling the boiler. In most cases this happens over a long period of time. Check condition of low-water cutoff if it has not been serviced in years, you may want to replace it. Also check 1/2 or 3/4 inch line at return piping.


@ May 2, 2009 2:24 PM in setting up forced draft burners


@ May 1, 2009 8:08 PM in setting up forced draft burners

looking for info on burners for boilers p.s. posting from west coast.

@ April 30, 2009 9:18 PM in setting up forced draft burners

Anyone have detailed info on setting air dampers and gas pressures, (gas/air mixture). showing a good starting point for gas forced draft burners, fixed fire and modulating.
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