Hello,
Looking for some advice regarding replacing our 50+ year old natural gas fired cast iron boiler.
I’ve read many posts here over the last week to help educate me, I’ll include the facts and measurements I have made to help facilitate correct boiler choice, sizing, etc… when speaking with the heating contractor.
I’m considering a Triangle Tube Prestige Solo 60K boiler and a Triangle Tube Indirect 40 gal DHW heater.
Here’s the basic info….
Location: zip code 11720, Suffolk County, Long Island
House: 1964 build, 2”x4” construction “spalnch”- downstairs at ground level (Kitchen, dining room and den + mother/daughter apartment in built in converted garage) is on a concrete slab, four bedrooms plus full bath upstairs, and a living room on a mid level that’s over a unfinished 18’x11’ “quarter basement” where the boiler/utilities are located.
Upstairs windows were replaced in mid 1987 with Anderson sash windows. Downstairs/livingroom windows and patio door were replaced with Anderson casement windows in 1997.
House was vinyl sided in 2009 with ½” foam over original common Cement-asbestos siding shingles.
Current natural gas fired cast iron boiler- Hydrotherm HC-100 (most likely original from 1964- no safety controls at all!) Input 100,000 BTU/HR, Output 80,000 BTU/HR Net Rating 69,600 BTU/HR.
DHW is currently supplied vai stand alone GE brand gas fired 40 gal hot water heater.
Currently- from my latest “actual reading” gas bill- I’m using about 3 therms/day this milder winter.
Three zones baseboard/water fin heating ¾” copper pipe:
Upstairs- 46’ measured fin length
Downstairs 51’ measured fin length
Apartment 43’ measured fin length
Total length = 140ft
SQ Ft measurements not including “quarter basement”:
Upstairs 566 sq ft
Downstairs 590 sq ft
Apartment 400 sq ft
Total heated area 1556 sq ft
My shortest zone is 43’ and it seems that can use up to (43*560) 24,080 BTU/hr whereas the Prestige Solo 60K can modulate down to 16,000 BTU/HR so I shouldn’t see short cycling and should be in condensing mode?
So, with the above in mind, and assuming I go with the TT Prestige Solo 60…..
Will there be an issue if all three zones call for heat at once?
I’m hoping the Solo 60 is sufficiently sized to supply the 40gal indirect DHW heater?
Please feel free to ask as many questions as necessary.
Thanks in advance for all the help and great info available on this site!
Rob
Looking for some advice regarding replacing our 50+ year old natural gas fired cast iron boiler.
I’ve read many posts here over the last week to help educate me, I’ll include the facts and measurements I have made to help facilitate correct boiler choice, sizing, etc… when speaking with the heating contractor.
I’m considering a Triangle Tube Prestige Solo 60K boiler and a Triangle Tube Indirect 40 gal DHW heater.
Here’s the basic info….
Location: zip code 11720, Suffolk County, Long Island
House: 1964 build, 2”x4” construction “spalnch”- downstairs at ground level (Kitchen, dining room and den + mother/daughter apartment in built in converted garage) is on a concrete slab, four bedrooms plus full bath upstairs, and a living room on a mid level that’s over a unfinished 18’x11’ “quarter basement” where the boiler/utilities are located.
Upstairs windows were replaced in mid 1987 with Anderson sash windows. Downstairs/livingroom windows and patio door were replaced with Anderson casement windows in 1997.
House was vinyl sided in 2009 with ½” foam over original common Cement-asbestos siding shingles.
Current natural gas fired cast iron boiler- Hydrotherm HC-100 (most likely original from 1964- no safety controls at all!) Input 100,000 BTU/HR, Output 80,000 BTU/HR Net Rating 69,600 BTU/HR.
DHW is currently supplied vai stand alone GE brand gas fired 40 gal hot water heater.
Currently- from my latest “actual reading” gas bill- I’m using about 3 therms/day this milder winter.
Three zones baseboard/water fin heating ¾” copper pipe:
Upstairs- 46’ measured fin length
Downstairs 51’ measured fin length
Apartment 43’ measured fin length
Total length = 140ft
SQ Ft measurements not including “quarter basement”:
Upstairs 566 sq ft
Downstairs 590 sq ft
Apartment 400 sq ft
Total heated area 1556 sq ft
My shortest zone is 43’ and it seems that can use up to (43*560) 24,080 BTU/hr whereas the Prestige Solo 60K can modulate down to 16,000 BTU/HR so I shouldn’t see short cycling and should be in condensing mode?
So, with the above in mind, and assuming I go with the TT Prestige Solo 60…..
Will there be an issue if all three zones call for heat at once?
I’m hoping the Solo 60 is sufficiently sized to supply the 40gal indirect DHW heater?
Please feel free to ask as many questions as necessary.
Thanks in advance for all the help and great info available on this site!
Rob