Surface temperature of a Webasto Hydronic's exhaust?

[mdmelvin]

Surface temperature of a Webasto Hydronic\'s exhaust?

I'm considering the installation of a Webasto hydronic (ciruclating water) heater into my boat, and contemplating the locations to install the boiler unit.

Obviously, the exhaust piping will be hot and shouldn't be near anything flammable, but I'm wondering how hot, and how much heat the exhaust will "leak" into the compartment where I install it.

I'm happily looking at an installation which would place it inside the cockpit's stern lockerspace, on the lateral bulkhead. The exhaust would make a 90 degree turn and then about a 30" straight run to a nice exit location high up on the transom.

Seems ideal, except that the lockerspace spans the width of the boat, and down in there are my autopilot control, the SSB radio tuner, and through there (though 8 feet away on the other side) run the diesel filler hose, and the propane supply hose also moves through that lockerspace.

Does the exhaust radiate enough heat to worry about heating up that space?

 

[orizaba]

Re: Surface temperature of a Webasto Hydronic\'s exhaust?

i would say yes one easy solution is to wrap it in exaust bandage,this is a woven heat resistant webbing available i think from asap supplies,it will cut your radiated heat down and iy you wanted to you could then wrap it in aluminium tape. if you have a company near you that install generaters it might be worth asking them as there is a split ducting available that does a smilar job

 

[savageseadog]

Re: Surface temperature of a Webasto Hydronic\'s exhaust?

One disadvantage of insulating the exhaust is that the eventual outlet temperature will be higher. I've used a stainless mesh which prevents contact but allows the heat to escape to the benefit of the boat and occupants