PSG Max Caddy

[newyorker]

About 5 cords of ash and 2 oak yeah I want to be atleast three years ahead by fall love the kuuma but got a deal on the caddy with blower and fan limit for 2300 it was hard to pass up

 

[newyorker]

I'm going to run my caddy in parallel with my lp furnace the caddy it about 20 ft away so I was going to run a 8x18 duct what did you guys do for a backdraft damper I will have to add a heat dump won't I?

 

[brenndatomu]

I like this set up from the Kuuma manual. A heat dump is a good idea.

 

[newyorker]

I'm I need one in the lp furnace because I have to keep the heat off the ac coil but I really don't understand how that check flap works it must have a motor and be wired to both furnaces?

 

[brenndatomu]

If done properly they just open and close from gravity and air flow...

 

[newyorker]

Yea I was planning on putting ome in lp plenum and caddy plenem just gravity ones but if the power ever went out the caddy might over heat just looking for ideas

 

[STIHLY DAN]

I like this set up from the Kuuma manual. A heat dump is a good idea.View attachment 130074

I don't like that, I think the flap should be on the fossil fuel unit. What if power goes out and nobody is home or are sleeping. I think the best would be a motorized dampers, 1 normally open and 1 normally closed. When the fossil fuel unit runs it powers them in the opposite direction.

 

[brenndatomu]

Good point stihly...

 

[newyorker]

Motorized ones are expensive I was just thinking gravity ones?

 

[JRHAWK9]

I would also like to know the best way to accomplish what I need to. I'll be placing an order for my new furnace soon and I will be having an HVAC guy come out and look at what I have and give me recommendations on what has to be done. I will also want to accomplish the same thing as newyorker, keep the hot air off of the AC coil as well as keep the ducts open to gravity flow in the event of a power outage.

 

[newyorker]

$250+ x 2 where gravity are $90plus

 

[JRHAWK9]

where do you even buy the large rectangle ones (gravity or otherwise)? My current main duct coming off my furnace/A coil is 20"x10"

 

[newyorker]

Irr supply in newyork I'm sure there is a HVAC supplier near you first they say we don't sell to the consumer but if you have cash and no exactly what you are taking about and want they will sell it to you

 

[newyorker]

Im thinking a gravity one over the caddy and a gravity one over the a coil is what I am going to do I guess I will have to put a heat dump in down the road I'm up to better idea tho I'm no pro

 

[newyorker]

I really don't see away to have gravity with a parallel installed with out back feeding either furnace

 

[STIHLY DAN]

Depending how you do the install you could do one gravity at fossil furnace supply. Location of tie in is key.

 

[newyorker]

Yea true put a gravity damper on lp furnace and motorized on wood furnace then if power goes out and you were burning wood that damper would be open to let the heat gravitate out good idea

 

[newyorker]

Caddy arrived today wo nt be able to get into the basement till Sunday or Monday have never seen one in person I am quite impressed

 

[STIHLY DAN]

What I mean is ! only. For instance, wood furnace beside oil furnace. Supply of the wood furnace feeds the duct 1st, then the oil with the gravity damper. So when the oil fan runs it pushes the damper open, by doing this it seals off the wood furnace supply. 1 damper 2 duties.

 

[newyorker]

Yeah that won't work with my set up bit I know what you mean

 

[JRHAWK9]

Attached is a crude sketch of how I'm going to be having mine setup. Any comments/concerns?? newyorker, is this how your going to do things as well?

The cold air for the LP furnace is connected to the cold air ducts, while the cold air for the wood furnace will be a combination of an open staircase and laundry chute, which extends from the basement up to the second floor loft and has an open grate on it. The chute also has an opening in the first floor bathroom which I may remove the door for winter to allow even more possible places to pull from. The HVAC guy said I will have very good circulation with things setup like that.

 

[newyorker]

That's exactly how in doing mine I think except I'm hooking in a return

 

[laynes69]

What I mean is ! only. For instance, wood furnace beside oil furnace. Supply of the wood furnace feeds the duct 1st, then the oil with the gravity damper. So when the oil fan runs it pushes the damper open, by doing this it seals off the wood furnace supply. 1 damper 2 duties.

That's basically how our works. If it would happen to close the dampers above the woodfurnace, I can manually open them. The only way our damper would be closed above the woodfurnace is if the lp furnace ran and the woodfurnace didn't.

 

[newyorker]

Got my caddy today laynes pretty impressed with quality one hell of a blower on it if it works half as good as it looks I'm going to be happy camper

 

[laynes69]

That's good, hope everything works well for you. Ours has served us well.