Question About Venting

[Jkadv]

Hey, new to the forum. Just moved into a new home in the Summer. Its a decent size duplex with a double garage. Naturally, I'd like to heat the garage as I do my own work on my vehicles and it gets as cold as -40 degrees Celsius. here in Edmonton, Alberta.

I bought a 45,000 BTU ProCom heater from NorthernTool (http://www.northerntool.com/shop/tools/product_200577839_200577839) recently, and am wondering if you guys have any suggestions on venting. I've attached the floor plan, but as you can see, the master bedroom overlaps on top of the garage. The portion of the garage that is below the master bedroom has a very high ceiling, and then not so high on the rest of it. I wanted to mount the heater at an angle in the corner next the the outside wall of the garage and blowing downward, that's where I've got the gas line. Any thoughts on a good strategy for venting? The only spot that I can see for horizontal venting goes over my walk way. Vertical venting would go through my bedroom.

 

[raceman6135]

You'll likely have to vent horizontally, over your walkway, with the discharge end over your "lawn."

I can't find the code right now, but I doubt you'll be able to vent vertically because it will terminate too close to the window(s) in your master bedroom. And, if you could go high enough, it would look bad.

You also, by code, cannot vent horizontally directly above the walkway, so it will have to extend over top of the 'lawn' area, and of course, be properly supported.

You may be able to run the vent vertically toward the front of your garage, and then up through the roof -- this might give you the proper minimum clearance from the bedroom window.

Let us know what you find out and/or decide.

 

[Jkadv]

Thanks,

I was just looking at, and with the horizontal venting over the walk way, by the time it clears the eaves, it's only a little more to clear the walkway. I'm looking at tackling it in the next week or so.

 

[Scott NJ]

Sorry op. But I do have a question regarding venting on a similar heater.

Can the vent be shared with a power vent water heater? It would be horizontal

 

[Mike007]

Sorry op. But I do have a question regarding venting on a similar heater.

Can the vent be shared with a power vent water heater? It would be horizontal

No..

 

[Scott NJ]

No..

Thanks

 

[Jkadv]

What about venting it through the attic space that is above my front door and terminating above my lawn?

 

[ddawg16]

Sorry op. But I do have a question regarding venting on a similar heater.

Can the vent be shared with a power vent water heater? It would be horizontal

Is that PVC pipe on the vent? And it doesn't melt?


What does the manuf instructions say about horz venting?

Also...don't be afraid to call you local building and safety office.

 

[Scott NJ]

Is that PVC pipe on the vent? And it doesn't melt?


What does the manuf instructions say about horz venting?

Also...don't be afraid to call you local building and safety office.

That's my power vented water heater in the picture. I was curious if I could tap into the existing vent to avoid drilling another hole.

But I ended up going with a 7500 watt electric heater.

 

[Heiny57]

Is that PVC pipe on the vent? And it doesn't melt?


What does the manuf instructions say about horz venting?

Also...don't be afraid to call you local building and safety office.

There are high efficiency water heaters and furnaces that vent with PVC. Pretty cool. They can be ran horizontal or vert. You just have to use different trim caps to keep water and critters from getting in.

 

[dave67fd]

Although your 45k btu heater should easily heat your 18 x 21 area, the prefered location would be to heat the area of coolest air entry. In other words facing (or nearly so)towards your overhead door, entrance way, window etc..

Consider a ceiling fan for the high ceilings.

You didn't mention if the area is insulated or not. If not it's imperative that you do that quickly.

 

[Jkadv]

Garage is insulated, I don't think the builders expect people to install heaters in them since it is a huge pain to get them vented (as I'm discovering). There is literally one location that this heater can go and its in the back corner by the outside wall, anywhere else will interfere with the garage door opening. I will post some pictures when I get home..

Now with the horizontal venting, I know its a topic that is kind of beat to death on this forum, the installation manual states that it is certified as a category I appliance for residential horizontal venting installation.. I can't seem to get my hands on a copy of the CSA-B149.1-10 gas codes... but does the code state that ALL horizontal venting of unit heaters must be done as category III if they are manufactured after July of 2011 regardless what the product manual says?

I'm getting a contractor to install the vent and connect the gas, but naturally I'd like to be as informed as possible. I'd hate for them to use the wrong material and have the installation fail inspection. I've left messages for the local inspector to give me a call, but he hasn't returned any of my calls.

 

[Jkadv]

Now with the horizontal venting, I know its a topic that is kind of beat to death on this forum, the installation manual states that it is certified as a category I appliance for residential horizontal venting installation.. I can't seem to get my hands on a copy of the CSA-B149.1-10 gas codes... but does the code state that ALL horizontal venting of unit heaters must be done as category III if they are manufactured after July of 2011 regardless what the product manual says?

I confirmed with my local inspector that I can use B-Vent to vent horizontally. The plan is to vent out that small attic space above my front door, past the eaves and terminate over the grass (snow). Anybody done anything similar?