Some radiant heating systems have radiant tubing stapled to the underside of the floor.
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Our Radiant Heating Systems

A Description of Several Types of Radiant Systems
Including Our Preferred System.

Think Outside the Box
There are many ways to take advantage of the benefits of radiant heating and cooling. Some radiant floor heat system concepts are at least 100 years old. Other radiant heating systems are newer and more innovative. We urge you to at least take a look at these modern systems. The newer and more innovative floor heating systems can offer significant advantages.

Please note that Radiantec often recommends the use of domestic water heaters instead of expensive boilers. Click here for more information about that use. This is an opportunity to save thousands of dollars and still have a better and more energy efficient radiant floor heating system.

THE OPEN DIRECT RADIANT HEATING SYSTEM

(both heat and domestic hot water are provided directly from the same heating unit)

The Open Direct Radiant System offers unprecedented efficiency with a highly affordable first cost and is our preferred system out of all radiant floor heating systems. It is one single system that operates in two different and distinct ways. When floor heat is called for, the pump comes on and water flows out of the tank, through the radiant floor heating zone and back to the tank. When domestic hot water is wanted, water flows out of the tank and goes to the fixture. All water in the system remains potable.

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Open Direct Legend

The “OPEN DIRECT”
System is Radiantec’s
preferred radiant heating system because of these
advantages

AFFORDABLE

Because of great simplicity, use of a water heater for dual purposes, no boiler, fewer parts, easy installation and energy efficiency.

EASY TO INSTALL

Because of fewer parts and great simplicity.

EASY TO WORK ON

Because of great simplicity, common parts.

SIMPLE TO MAINTAIN

Because of great simplicity, low temperatures and long lasting materials.

EASY TO GET PARTS

Because of simplicity and common parts.

FEWER PARTS

Because of common use of the domestic water heater and great simplicity.

MORE RELIABLE

Because of fewer moving parts, great simplicity, lower temperatures, stainless steel quality.

LONGER LASTING

Because of low temperatures and stainless steel construction.

ENERGY EFFICIENT

Because of radiant heating, low temperatures and condensation of the flue gasses, limited free cooling.

ENVIRONMENTALLY FRIENDLY

Because of condensation of the flue gasses, limited free cooling.

COMPATIBLE WITH SOLAR

Because of domestic hot water based design.

DO IT YOURSELF FRIENDLY

Because of great simplicity.

CODE COMPLIANT

See your sales tech.

SAFE

Because of low temperatures, lack of boiler and great simplicity.

Click Here for more information about Radiantec’s Open Direct Radiant System.

THE INDIRECT RADIANT HEATING SYSTEM FROM RADIANTEC

(heating is provided indirectly by means of a heat exchanger)

When radiant floor heating is called for, domestic hot water is pumped to the heat-exchanger where the heat is transferred to the heating fluid on the other side. At the same time, the floor heating zone pump(s) comes on and circulates the heating fluid where it is needed.

A heat exchanger separates the radiant heating fluid from the potable water supply.  This allows a non-potable heating fluid (such as Anti-freeze) to be used. These radiant heating systems

Click here to read more about Radiantec’s Indirect System.

 

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Indirect System

THE CLOSED RADIANT HEATING SYSTEM FROM RADIANTEC

(This “traditional” system uses a boiler or water heater to heat water)

Closed radiant heating systems dedicate a boiler or water heater exclusively for space heating. Then water (or glycol) circulates through the radiant floor tubing. When a boiler is used, this familiar and conventional approach is well accepted by building code officials.

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Closed System

Click here for more information about Radiantec’s Closed System

Solar Radiant Heating Systems

Radiantec supports the use of solar energy whenever it is feasible and notes that solar efficiency has improved greatly in the past few years. The following graphic represents a solar domestic hot water based solar system that is particularly appropriate for radiant heating systems.

 

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For more information on our solar heating technology, visit www.radiantsolar.com

GLOSSARY AND TERMINOLOGY SECTION

If you see words and expressions that you are not familiar with, consult this section.

Understanding the meaning of the following phrases will make it easier to understand your heating system options.

BOILER
A boiler is a heating device that is engineered to make very hot water (up to 250 degrees F, under pressure) for radiators and baseboards. Many boilers do not work well at lower temperatures and may need expensive controls to make the adjustment.

DOMESTIC HOT WATER HEATER
A domestic water heater makes moderate temperature water and a storage tank is typically provided. There is a potential for higher efficiency with a hot water heater because of lower operating temperature and lower exhaust gas temperature, but many low end water heaters do not take advantage of this potential.

HEAT EXCHANGER
A heat exchanger is a device that exchanges the heat from one fluid to another without a mixing of the fluids. A typical use would be to keep the potable domestic hot water separate from the boiler fluid.

CLOSED SYSTEM
A closed heating system is closed off from the environment and its heating fluid is only changed for maintenance.

OPEN SYSTEM
An open system is one that is open to the atmosphere or one in which the heating fluid is replaced often.  A domestic water heater is an open system because the heated fluid is constantly changed. Open systems require different mechanicals and materials.

POTABLE
Potable means fit to drink.

DIRECT SYSTEM
A direct system uses the same water for both heating and domestic hot water for doing dishes, laundry, taking showers, etc. There is no separation between the two.

INDIRECT SYSTEM
An indirect system is one in which the heat from the heating unit passes through a heat exchanger before it goes to the in floor heating tubes.