Greenhouse Unit Heaters Redefined
The revolutionary tubular heat exchanger inside the Lennox LF-24 series of greenhouse heaters ensures you years of performance and high efficiency. Combustion is precise because of special "in-shot" burners and fan assisted exhaust. Equipped with a TrueLeaf Combustion Air Separator, it's bullet-proof.

Finned Heat Pipe

Components

StarConn Fitting:
The StarConn is the connector to use when joining any of our finned heat-pipe products. Made from a very hard alloy of aluminum we machine them on a CNC lathe to close tolerances for a leakproof fit every time. Standard with double O-rings, they are sold individually, but you’ll need to add two StarStraps for each.

StarBarb Fitting:
The StarBarb connector is used when joining any of our finned heat-pipe products to flexible hook-up hose. Like the StarConn, it’s made from a very hard alloy of aluminum and machined with sharp barb serrations for a good bite on the ID of the hose. Standard with double O-rings, they are sold individually, but you’ll need to add one Barblock for each.

Starconns with Air Vents:
For the overhead application, sometimes it makes start-up simpler to have integral air vents on the return side of your loops. This gets rid of air at the point it travels to, rather than trying to push it back to the boiler room. We provide these fittings with a small automatic air vent tapped and threaded right in.

Threaded Starconn with Dielectric Coupler:
In many of our “high end” installations for institutional, residential, or retail applications, our clients do not want to see flexible hose connectors as they are not as aesthetically pleasing as the straight lines you achieve with hard plumbing. We machine these StarConns with the familiar double O-ring connection on one side and 3/4” male pipe thread on the other. Because we need to create a dielectric break between the aluminum and the supply and return piping of copper or steel, we ship each fitting complete with a non-conductive dielectric coupling. You’ll need to add one Barblock for each.

Deburring Tool:
When assembling StarConns, StarBarbs, etc., it’s important that the leading edge of the inside diameter of the heat-pipe isn’t rough or too sharp or one of the O-rings could be damaged. Use this handy little tool to remove the sharp edge quickly.

Starstrap:
This is the small “tab” that joins one section of finned heat-pipe to another. Use two per StarConn and you’ll have a very stiff connection with minimal deflection or bending at the connection point. They are packaged with two stainless steel self-tapping screws.

Barblock:
This is the part that retains the StarBarb into the end of a section of finned heat-pipe. Simply install the StarBarb in the end of your fin run and place the Barblock over the end. Secure with the included stainless steel self-tapping screws for a solid, safe, and secure connection to hose.

Replacement O-Rings:
Occasionally, an O-ring gets torn during installation. For this reason, we supply extras in your packaged shipment. Simply remove the old or worn O-ring and stretch a new one in place and replace the fitting.

Aluminum bends and special profiles and adapters:
We build and stock standard size “return bends” of 18”, 36” and 48”. Each comes prepared with a StarConn machine pressed into the end of the unit for quick installation at the end of your finned heat-pipe loop. We also make many custom size units for going over greenhouse doors etc.. We also weld up 3 connection “E” bends and “W” connectors for benches with 3 pipes underneath. Best to call and discuss with us if you have a custom need.

Thermoid Hose:
This is an industrial hose product with a great balance of value and long-term durability in the greenhouse heating environment. Fits the StarBarb perfectly. Retain with worm-drive hose clamp.

Our hose clamps are constructed completely of stainless steel. There are no parts that will corrode and fail in the harsh greenhouse environment.

Steel Hose Barbs:
Available threaded or set for welding with a beveled end, these steel barbs are used when adapting to supply and return manifolds made of steel.

Copper Hose Barbs:
These are very hard to find fittings that provide a barb connection for Thermoid hose and a solder joint on the other side. If you are installing your finned heat-pipe system with copper supply and return manifolds, this is the best, most economical way to make this connection.

Supports for Finned Heat Pipes:
Most people simply use a section of our plastic-dipped chain material to hang these products. However, we make a special bent-wire hook for this purpose as well. We can bend them to order depending on the length you need. Also, for mobile tray applications, we fabricate “Fin-Pins” for supporting pipes from the ground up.

Dipsy-Do’s:
Usually, there’s a walkway along the end of a bench run. Setting the supply and return manifolds under the end of the greenhouse benches is a problem because they either need to be in a trench or you’ll need to step over them forever. We prefer to locate the manifolds on the end-wall where they can be maintained and even provide a little heat buffer. This is the method we use to dip under the walkway and feed through to the finned heat-pipe connections. We build these per project with hose ports set for thermoid house.

Silicone Lubricant Spray:
Use this spray lubricant when assembling your finned heat-pipe greenhouse system. Never use petroleum-based lubricants as those chemicals will attack the O-rings on the fittings. Spray this silicone material on the fitting and insert with a twisting motion for easy and quick assembly.