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help on modifying steam boiler to add hot water zone for addition in long island NY
Hi, Heating gurus,
I am new here and need some expert suggestions to how to heat the 2 story addition (250 sqft ft each floor). Here is my current situation.
I have a gas steam boiler( it is burnham KIN4LNI-LE2 105000 BTU ) installed 4 years ago, currently is heating around 1300 sqft area. my steam heating system is one pipe system and have issues with two rooms are not hot ( even cold) at the far end of pipe. I tried to change different vent and still not work. sometimes one vent in the cold room is bleeding black water out before getting warm.
I have a plumber in the project and he is planing to tapping the current steam boiler to add water heating zone for the addition. since Feb he disappear and my general contractor also said he will not do this project even though i paid 90% of what he asked. the winter is coming and I need to have heating added for the addition at least.
Here are some options and please help to evelaute which one is best.
1. tapping steam boiler with additional water heating zone for addition. Also have someone to tune up the steam heating system to remove this bang bang noise in pipe and have two room warm at least. The problem for this modification i am not sure how many company can do this and how to maintain in the future. When this boiler is dead, have to replace one with company know how to do this.
2. modify this steam boiler to hot water boiler and have to repipe and add baseboard in all rooms. Current around 7 radiators in my house. not sure the cost. however, in future we can replace to hot water boiler if needed. Not sure if it is worthwhile to bring a new hot water in if it is only cost 2000-3000 more since convert steam boiler cost money too.
3. add a hot water boiler small enough to heat the 500sqft addition. not sure if it is possible to install a hot water boiler with large capacity but only use heat the addition, later can can use this water boiler for current house after changing steam heating to water heating if noise issue and heating issue can not be solved.
4. add combi system, how is the reliable for this and can the combi with large capcity run to heat the small addition with 500sqft too.
Sorry for long post. Thank you for suggestions. also welcome to PM me if you can work with plumbing license in Nassau county NY.