HDX™ and GreenPEX™
Warm Floor Heating Systems
Systems
Heating
     
 

Greenhouse Floor heating just makes sense.

TrueLeaf Technologies for complete greenhouse heating systems, boilers, finned pipe heating systems, warm floor heating systems, hydronic unit heaters, unit heaters, heat exchangers, finned heaters, finned pipe heating, biotherm, microclimate, benchwarmer, roll-n-grow, megatube, hdx tubing, greenpex. If you are going to pour concrete in any area where plants or people will be, it makes sense to install floor heating. Not only is it one of the most effective methods of greenhouse heating with the boost to plant growth quite well documented, it creates a very pleasant working environment too. Any barn, service building, or headhouse where labor occurs will be better if the floors are warm.
     Use this product for  
  —Bench Top Heating
—Under Bench Heating
• Floor Heating
—Perimeter/Top Heating
—Bed Heating
—Gutter Line Heating/
—Snow Melting
—General Air Heating		  

Among the benefits, floors dry off quickly after clean-up with hoses and you don’t lose your heating energy when you roll up shipping doors. This is because the heat is in the floor! Radiant floor heating heats objects first and air last, so people stay warmer and more comfortable with warm feet and cool heads to go about their work. In the greenhouse, floor heating in concrete is fast becoming the standard way to grow, especially where Flood Floors are concerned. Our Flood Floor Department has completed over 10 million square feet of Flood Floors! All of it with floor heating in the concrete . Another very powerful application of our Warm-floor greenhouse heating systems is in the burgeoning area of retail garden center construction. Retailers report that customers stay in their stores longer and consequently buy more plants and related items. This is because this silent, but incredibly comfortable greenhouse heating system completes a great shopping environment. Many retailers have even set up special snow and ice removal zones to make the foot traffic areas around their stores safer for shoppers. As you can see, our floor heating systems are perfect for heating concrete floor production areas where sanitary, healthy, quick production is desired. We engineer the entire system to provide gentle, evenly delivered heat using constant flow design techniques. These systems can be set up to accommodate any number of zones for your specific requirement for perfect heating distribution.

Longevity:
It makes no sense to cut corners when selecting a greenhouse warm-floor heating system. Remember that your investment is mostly in the actual concrete, and you’ll probably expect it to last 50 years, or longer. Don’t make the mistake of installing inferior heat tubing that may not give you the long term performance you need. Many growers have found that being “penny-wise and pound-foolish” in this area is a very bad decision. What will you do if the tubing you got for “next to nothing” starts leaking after 5 or 6 years?

We offer our warm-floor heat tubing in 2 compounds:
HDX, which is an ultra-high molecular weight resin of high density poly-ethylene. It’s made in a distinctive red color, so you know you are getting true HDX tubing. Also, while our HDX meets very stringent ASTM testing standards for quality, it is our “economical” choice of floor heating tubing.


GreenPEX is our upgrade choice.
It’s a cross-linked polyethylene extrusion or “PEX”. We’ve developed GreenPex especially for the greenhouse industry. Cross-linking technology imparts this tubing with characteristics that make it extremely durable. The cross-linking process “knits” the molecules together. PEX tubing is becoming the standard for floor heating outside of our industry because of its excellent performance in accelerated aging tests.




















Note:
In some regions, code compliance rules are now calling for PEX tubing for all warm-floor slab heating installations.

We design each greenhouse warm-floor heating system individually for maximum efficiency. Usually, you can count on the floor heating system to deliver 30-50% of the total heating requirement of the greenhouse. To accomplish the balance of the heat load, we’ll integrate one of our other systems, Starfin, Duofin, 51mm or even Lennox or Ermaf gas-fired unit heaters to meet the total demand.


 
 



   
HDX Tubing Specifications  
TrueLeaf HDX™ Tubing is manufactured from High-Density Polyethylene PE3408 with a HDB of 1600 psi at 73ºF and 800psi at 140ºF with color and UV protection additives. PE3408 meets ASTM Material Specification D 3350.

  
Physical Properties:  

Property
Values
  
Flow Rate
Pressure Ratings
Normal Operating Temperature

.0092/.0184 gal/ft
100 psi @ 140ºF(60ºC),     200 psi @ 73ºF
140ºF(60ºC)

 
General Data:  

½" HDX™ Greenhouse Hydronic Radiant Floor (HRF) Tubing
  
Material
Color
Nominal Pipe Size
Nominal O.D.
Minimum Wall Thickness
Weight per 100 feet
Standard Coil Length
Standard Coil Diameter
Printing 		PE3408 High Density Polyethylene
Terra-cotta
½”
.625”
.070”
7.5 lbs.
1000 ft. (custom lengths available)
36”, ID inches
FT TRUELEAF® 1/2” HDX TUBING (DATE) (TIME)

  

(footage printed every 2 foot descending for convenient cutting)		  


¾" HDX™ Greenhouse Hydronic Radiant Floor (HRF) Tubing
  
Material
Color
Nominal Pipe Size
Nominal O.D.
Minimum Wall Thickness
Weight per 100 feet
Standard Coil Length
Standard Coil Diameter
Printing 		PE3408 High Density Polyethylene
Terra-cotta
¾"
.875"
.097"
10.5 lbs.
500 ft.(custom lengths available)
36", ID inches
FT TRUELEAF® 3/4” HDX TUBING (DATE) (TIME)		  

(footage printed every 2 foot descending for convenient cutting)		  







   
GreenPEX
 Tubing Specifications  
TrueLeaf GreenPEX™ was developed especially for the greenhouse heating industry and is manufactured from High-Density Polyethylene PE3408 with a HDB of 1600 psi at 73ºF and 800psi at 140ºF with color and UV protection additives.
It’s cross-linking technology uses the electron beam method.
GreenPEX™ meets ASTM Material Specification standards F-876/877.

  
Physical Properties:  

Property
Values
  
Flow Rate
Pressure Ratings
Normal Operating Temperature

.0092/.0184 gal/ft
100 psi @ 140ºF(60ºC),    200 psi @ 73ºF
140ºF(60ºC)

  
General Data:  

½” GreenPEX™ Greenhouse Hydronic Radiant Floor (HRF) Tubing
  
Material

Color
Nominal Pipe Size
Nominal O.D.
Minimum Wall Thickness
Weight per 100 feet
Standard Coil Length
Standard Coil Diameter
Printing 		PE3408 High Density Polyethylene with
E-Beam cross-linking
Blue for Non-Barrier, Orange for Barrier
½"
.625"
.070"
7.4 lbs.
1000 ft. (custom lengths available)
36", ID inches
FT TRUELEAF® 1/2” HDX TUBING (DATE) (TIME)		  

(footage printed every 2 foot descending for convenient cutting)		  


¾” GreenPEX™ Greenhouse Hydronic Radiant Floor (HRF) Tubing
  
Material

Color
Nominal Pipe Size
Nominal O.D.
Minimum Wall Thickness
Weight per 100 feet
Standard Coil Length
Standard Coil Diameter
Printing 		PE3408 High Density Polyethylene with
E-Beam cross-linking
Blue for Non-Barrier, Orange for Barrier
¾"
.875"
.097"
10.5 lbs.
500 ft. (custom lengths available)
36", ID inches
FT TRUELEAF® 3/4” HDX TUBING (DATE) (TIME)		  

(footage printed every 2 foot descending for convenient cutting)