The VD2A series of the Vitorond 200 commercial oil-/gas-fired sectional cast-iron boiler
from Viessmann modulates boiler water temperatures to closely match system output to actual demand.
A 30-year-old cast-iron boiler
may be running OK, but its efficiency is poor.
This means that cast-iron boiler
efficiency has to be improved.
Shively circled to the back of one building, weighing the value of the cast-iron boiler
I retreated to the lounge trying to keep warm and do some work - while ignoring anything that sounded like a heavy cast-iron boiler
crashing through the ceiling.
Currently, the heat source for the school space heating comprises 2 @ sectional cast-iron boilers
, the burner units for which are oil-fired.
Two gas-fired GN4 N-14 cast-iron boilers
were selected to provide all the warm air heating for the entire 250,000[ft.
It had to be collected from the nearest stream or well before being put into cast-iron boilers
, kettles or zinc buckets which would be suspended over an open fire in the kitchen.
Backstage, workers cleared out four giant cast-iron boilers
in order to create additional dressing room space.