oil fired direct venting

allenleo

what are some of the major issues a service technician is faced with reguarding direct venting? what are some of the major causes of problems and what are some of the most overlooked solutions to those problems? any technical input appreciated.

allenleo

oil fired direct venting

what are some of the major issues a service technician is faced with reguarding direct venting? what are some of the major causes of problems and what are some of the most overlooked solutions to those problems? any technical input appreciated.

Steve Eayrs_2

more moving parts?

When using power venters, you can expect the motor on the venter to be about the weakest link in the system. Thats one hot running little noisy motor, and its bound to go ut before most anything else in the system.
When pressure firing, or using the burner motor to operate the purge cycle, it is quieter, and you don't have a power venter motor to worry about, but you still have some problems, related to wall venting. Always seems they will run dirtier than a natural draft stack system. They are prone to be more sensitive to outside air conditions, wind, cold, etc......
I am also convinced a wall vented oil fired boiler is less efficient. That 3 min or so purge cycle is pulling cold outside air across the heat excahnger you just heated up. Anyone have data on this?
Other problem is finding an ideal spot to put one. With decks, snow loads, wind conditions, opening windows, its hard to find a spot for it.
In otherwords, I always run a stack up thru the roof, unless impossible to do.

Steve

John@Reliable_14

Steve, direct vent not power vent

I have a few direct vent oil fired units in the field with no problems. Only thing I would recommend is annual service at the end of heating season, along with proper install, burner set-up and location of air intake to avoid exhaust pulled into intake air. Any soot on building is not normal. P.S. I even find that power vents properly installed do have a place in the field, but can be maintenance issues. John

allenleo

more specifics

i was looking for maybe some more specifics. i was wondering about problems like cross contamination that might cause sooting or lockouts. things of this nature. or anything else that might be outside the norm, maybe problems that had unusual causes, that the ordinary service tech. might miss. i will post a new thread, with the specific problem. thanks for the input though. if you want to add to this its ok, but the specific problem i will post as hb smith dv8 problem. thanks.