power vent versus direct vent?

power vent versus direct vent?

PostBy: Lee1 On: Fri Nov 14, 2008 5:04 am

In considering future coal stove, which venting system do you think is better overall ( power/direct vent) . Also ive heard you need a baro damper with power vented system. Thanks Lee
Lee1
 
Hot Air Coal Stoker Stove: Alaska Channing 3

Re: power vent versus direct vent?

PostBy: Freddy On: Fri Nov 14, 2008 5:27 am

Power vent is a generic unit adjusted to fit your circumstance. It uses more electricity and sucks more air from the house. A direct vent is purpose built for your unit. It makes more sense to me.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: power vent versus direct vent?

PostBy: WNY On: Fri Nov 14, 2008 11:17 am

Both run 24/7 depending on your coal stove. I don't think one would be cheaper to run then the other.

Freddy, Why do say one is more expensive to run?

You could get a power vent/direct vent for you furnace and they would only run when needed (when the furnace is running).

The Direct Vent Mounts "Directly" on the unit and blows the hot exhaust gases out the pipe and the pipe needs to be sealed really good! No baro normally can be installed (no room). Normally sized for the unit.

Power Vent(s) usually mount on the outside of the house and SUCK or PULL the fumes out of the unit, a Baro can be installed and adjusted accordingly, pipes would be under a vacuum (same as using a standard Chimney hookup). Power Vents are usually sized larger for many different operating conditions and sometimes have to be slowed down (via a Rheostat) for some coal applications.

A basic chimney is always the best solution, but if you don't have the room or a good chimney, the power vent is a good alternate.
go to http://www.fieldcontrols.com/venting.php for SWG Power Vent information.
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon


Re: power vent versus direct vent?

PostBy: traderfjp On: Fri Nov 14, 2008 12:15 pm

A direct vent will require less maintenance because it sits inside your home while a PV will heed the elements outside. A PV will be quieter then a DV. A PV has a baro which helps to save fuel and eliminates the potential hazard of a hopper fire (with proper draft). A DV can be installed with a baro too but it's not standard practice. If I had to do it again I would go with the PV to keep the noise to a minimum but I like the design of the DV and Baro setup best.
traderfjp
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing 3

Re: power vent versus direct vent?

PostBy: Lee1 On: Sat Nov 15, 2008 2:27 am

Thanks guys , I appreciate your advice. Its something for me to really think about. I also see that the harmon stoker has a DV with the pipe inside the outer pipe which brings in outside air for combustion. This actually looks pretty good, seems safer against possible co leaks and warms incomming air while cooling exhaust gas. What do you think of this setup?
Lee1
 
Hot Air Coal Stoker Stove: Alaska Channing 3

Re: power vent versus direct vent?

PostBy: Freddy On: Sat Nov 15, 2008 5:47 am

A power venter uses more electricty becuase it's motor is larger. They are a generic unit that get's adujsted to fit your need. A direct vent if purpose built for exactly what it needs to do, thus not being over sized and tuned down.

I'm wondering if some direct venters are less noisy than others. A power venter is not specially quiet. I'd think sometimes a smaller motor in the house could be quieter than a larger one just outside. Either way, the best way is a chimney. If there's any way possible, get one.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: power vent versus direct vent?

PostBy: ceccil On: Sat Nov 15, 2008 5:55 am

I have never actually seen a power venter. The direct vent I had on my stove was very quiet. The blower motor was much louder than the direct vent. Of couse it was a larger motor and fan also. The first time I did fire the stove after connecting to the chimney though, there was a real difference in the noise level.

Jeff
ceccil
 
Stove/Furnace Make: Keystoker, Harman
Stove/Furnace Model: 90K, Mark III