Venting gas boilers

Jack_23

Regardless of requirements, performance will be much better with a lined chimney. Analyze the cost of the new boilers plus the relining system BEFORE selection of the equipment. You may want to go with Catagory III system rather than a Cat I. III's can be side wall vented with a special vent system (which may vary by manuf). I's can be vertically (nat'l draft)vented or side wall vented with the addition of a power venter. BTW, a masonry chimney is 11th century technology venting a 21st century appliance. Does not work well.

bob_17

venting gas boilers

I am really confused about venting gas boilers into a clay lined, indoor chimney..The manufacturer's instructions seem to be evasive At best.. Where are the regulations for Ma.The only thing I am able to find is authored by chimney liner manufacturers..Can any one help?

Harvey_5

Do your boilers have combustion air? I have seen the old
clay lined chimneys form condensation. Back in my residential days, we used to install a chimney liner.

ed wallace

ma regulations

In Ma.on gas installs you must line the chiney and also have makeup air usally utilazing a fan iun the can system

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paul lessard_2

read this

someone needs to sign off on the condition

paul lessard_2

not always

category 1 can be vented with b vent,chimney,listed liner system or "special vent" ...the chimney needs to be signed off by someone before replacement equipment goes in...or so i hear..I guess It depends on what the local inspector thinks or knows..:=) paul