Heating Help

Pick up Factor

@ March 31, 2011 8:23 AM in Pick Up Factor when sizing new staem Boiler

Brad ,
I think you missed my point a bit. I did a EDR Take off on the entire system and came up with hypothetically  1000 sg ft. I have always used Dans formula of multiplying the load by 1.5 than times that by 240 to convert that to BTU output. I than use the DOE of boiler spec to get my size. I use this because 99% of the times radaitors have been removed or changed. In this particular case nothing has been changed at all. Evert apt has the same 3 radiators and the same 2 riser pipes that provide heat. If I use 1.33 the boiler would be smaller, if i use 1.5 it would take me 1800 BTUS past that particular boiler and move me up one size which would cost the client more momey to install. Does that 1800 BTUS warrant me moving up one size just to satisfy it.

Pick Up Factor when sizing new staem Boiler

@ March 30, 2011 11:02 AM in Pick Up Factor when sizing new staem Boiler

I'm sizing a replacement boiler for a 8 family brownstone. which is 4 stories with 2 apts per floor. I' ve taken off all the EDR in the building. Im trying to decide whether to use 1.33 or 1.5 as the pickup factor. Each apt is identical and no radiators have ever been removed or changed. Each apt uses 3 radiators in 3 of the rooms and uses (1) 2"riser and (1) 1 1/2" riser only to heat each of the smaller two bedrooms. No radiators ever existed in these rooms. Generally when I see radiators removed or not original I would use 1.5 PUF. , but here everything is original. I I know the boilers ability to make staem has to match the systems ability to conensate steam. Using 1.3 PUF brings me 43,000 BTU's below a particular boilers DOE. Using 1.5 brings me only 1800 btus' above. Thus I would increase the boiler 1 size which would cost the owner more money to install and I would think to run. Im more inclined to use 1.3 PUF. Would like to know your thoughts.         

Burnham Boilers

@ August 18, 2010 9:00 AM in Burnham Boilers from National Grid

Burnham puts out a great boiler. It is the one we recommend to all our clients in the Brooklyn Area. We have been putting them in for years. It is the installation that makes a difference. Just make sure it is installed according to the manufactures specifications located in the installation manual. We actually put that in our proposal along with the page number. You will be happy with this choice of boiler to heat your home.

Aquastat

@ August 18, 2010 8:25 AM in Aquastat

Where is the correct placement of a Maual Aquastat in a Hot Water Boiler

Hot Water Heating Design

@ July 21, 2010 2:35 PM in Hot Water Heating Design

I was wondering where I might go to get help designing a 1 pipe hot water system using divertor T's. It is a brownstone renovation where we will be installing new free standing cast iron radiators. new piping and boiler. 

Sizing

@ January 6, 2010 3:14 PM in Sizing

We were called to replace a cracked steam boiler at a small church. The existing boiler is a Burnham K5009 WTH AN INPUT OF 624,000 and 499,000 output. The churc has 7 existing wall hung radiators and 6 free standing radiators. They total 551 square feet of radiation. Using a 1.5 pickup and muliplier of 240 we come up with 198,360 DOE. which calls for a Burnham IN8 WITH AN INPUT OF245,000 and DOE of 202,000.  I would like some input whether regading this installation. The chuch itself is 30' x 40' with a peaked ceiling which goes from 20' to approx 30' at its peak. Ther are 2 mains on each side of the buildini g one being 3" about 50' long and one 2 1/2" about 40' long. Each pick up half the load. They are old existing radiators so nothing has been altered. Should I increase my pickup factor or was the old boiler just an over killl. As I said would like some input.   

Gravity Hot Water System

@ November 23, 2009 2:20 PM in Gravity Hot Water System

Anyone familiar with converting a gravity hot water system to a sytem with a new ciculator pump. Original boiler needs to be replaced. It currently has a expansion tank in basement.

Two Pipe System

@ November 18, 2009 1:58 PM in Two Pipe System

I have a 2 pipe system with the rear and front of house have there own feed an returns.Upon checking system found some one had raised pressure up to 8 and cut out at 11 thinking it would help get heaT to radiators. This system is for the second floor only of a 2 story house. Needless to say all the traps failed in the closed position. I cant see the front of the house because it is all sheetrocked but in the rear I see a 1" steam main that goes up and along the ceiling for about 8" than goes up into the sheet rock. right next to it a 1" return line comes down thru sheetrock runs across and drops into a wet return. which also picks up front of house. It than goes into a Hartford Loop and back into boiler. I lowered the pressure so that the boiler operates between 1/2#and 1 1/2# . The boiler now builds pressure right awaay and shuts down beacuse the steam has no place to go because the traps have failed. This is a new system and I believe it has been piped wrong. . I want to make sure just how it should be piped . There is no F&T trap anywhere here and I believe it is required as well as a vent on the dry return. Any help would be appreciated      

Tune Up

@ November 12, 2009 7:22 AM in Boiler Tune-up

We remove and clean burners and pilot wth every yearly tune-up you provide for our customers. It's what you pay for.

Sizing

@ November 10, 2009 8:01 AM in Sizing

I have an old Victorian home whose steam boiler needs to be replaced. They currntly have a Burnham IN 9 . boiler. I sized the EDR and came up with 458 feet . Using a 1.5 pick up and converting it came away with 165,042 DOE. Based on those numbers I should use a IN 7 to replace it with. A little hesitant it is a 3 story house with the boiler located in basement. It has 2 2" mains along with 2 1 1/4" lines which pick up acbout 4 radiators in an extension and attic. Any help here wth the correct size.

Sizing

@ May 27, 2009 9:58 AM in sizing

I recently sized a small church for a replacement steam gas fired boiler. The existing boiler is a Burnham K5009 with DOE of 499,000 . After sizing the EDR 515 sg ft .and using 2 times instead of the usual 1.5 because of the excess piping . I come out with DOE of 247,200 which would have me use a Burnham IN10 DOE OF 259,000. As you can see there is a big differ in size. Just want to get some feedback. What do you think.

sizing hydronic heating system

@ January 18, 2006 7:33 AM in sizing a hydronic heating system in a brownstone

I am replacing a hot air system system in a brownstone in nyc wth a new hydronic heating system using free standing radiators. Concerned about correct sizing of both radiators and boiler

eliminating a vacume type heating system

@ December 5, 2005 3:49 PM in vacume heating system

What is the best way to eliminate a vacume heating system in a old large one family home and update it using the existing mains and risers and installing a new boiler wth necesary boiler room overhaul

eliminating a vacume type heating system

@ December 5, 2005 3:49 PM in vacume heating system

What is the best way to eliminate a vacume heating system in a old large one family home and update it using the existing mains and risers and installing a new boiler wth necesary boiler room overhaul

condensate tank piping

@ November 17, 2005 7:51 AM in condensate tanks

I have a condensate located in a crawl space under the boiler. The tank is located approx 3' vertically and 12'horizontally away from boiler. I piped boiler with equalizer and eliminated the hartford loop as suggested . I am concerned wth the location of the location of the 3/4" check valve on the pump discharge. Should it be installed at the boiler thus protecting the boiler. or should it be installed right after the pump discharge in the crawl space as suggested by manfacturer.

@ November 10, 2005 8:10 AM in one and two pipe heating systems

The system is existing and has been modified by other contractors quite a bit. I believe the original system was one pipe. And over the years it has been modified. In various locations a two pipe system has been added. They put steam traps on the radiators but they also put air valves, which I will have to remove. They have no steam traps on the return mains which they coverted to two pipes. They have a very oldcondensate tank in a crawl space which brings water back up to the boiler above. The existing boiler which was realively new ( W. Mclain 1,040, 000 input) dry fired . I resized the boiler using all the existing radiators and came away wth a Weil Mclain LGB6 STAEM BOILER. So the boiler was way over sized. The owner wants me to correct any problems and install the system correctly. I could use some ideas. Thanks.

one and two pipe heating systems

@ November 9, 2005 10:42 AM in one and two pipe heating systems

Can a existing heating system operate as both a one pipe and two pipe heating system. And how would you size a condensate tank which is located below boiler in a crawl space