#PEX MANIFOLD SYSTEM INSTALL#
#PEX MANIFOLD SYSTEM FULL#

Apollo ExpansionPEX barb fittings are a key component to one of the most economical potable water piping systems. PEX-A Barb Inlets x 1/2 PEX-A Barb 4-Port Closed Manifold is simple to install. Each system is efficient in its own way, and it is entirely up to the homeowner which system fits their home and lifestyle.The Apollo ExpansionPEX 3/4 in.

#PEX MANIFOLD SYSTEM INSTALL#

If the homeowner feels the need to separate the heating and potable water aspects of the home, and decides to install a secondary unit for radiant heating purposes then that is a closed loop system. If they decide that one system should be set up to run the homes radiant floor heating and potable services than an open loop system is required. The decision is strictly up to the consumer for which they prefer. The closed loop system is not connected to the potable water system in the home, and therefore the potable water system constantly provides fresh water.Ĭlosed loop and open loop systems will remain at the foundation of any radiant heating system.

#PEX MANIFOLD SYSTEM FULL#

This operation is very simple as opposed to the open loop system the full cycle for the water consists of leaving the supply source, running through the tubing to heat the required zone, and returning back to the source. These systems are typically connected to a source that’s heats the water such as a boiler or a tankless water heater, in which the heating fluid continually circulates through the system with no need for removal other than scheduled maintenance. To reduce the potential risk of Legionnaires, simply turn up the heat to 115 degrees Fahrenheit which is a temperature they cannot withstand.Ĭlosed loop radiant heating systems are the more preferred option for most plumbers, but are also more expensive due to the need for a secondary heating unit to be installed for optimal heating purposes. The threat of this disease due to an open loop system remains minimal, with no reports as to date.

The main concern stressed by plumbers is the Legionnaires Disease, which is caused by the bacteria Legionella Pneumophila which only grows in warm stagnant water. This method is frowned upon by most plumbers due to the fact that the same water that is being used to heat the floors is also being used for potable water applications such as cooking and bathing. This operation starts the water from the supply point on a full cycle, going from the heated floor system, to the water heater, then being sent either to a potable water component of the system, or to continue floor heating.

This is due to the constant amount of fresh water entering the system, making oxygen permeation inevitable.Īn open loop radiant heating system is set up in a format where the potable water that is used for bathing and drinking services of the house is also used for heating the floors. When installing an open loop system it is not necessary to use an oxygen barrier, and a non-barrier PEX tubing will suffice for the job. This ensures that the ferrous components of the system do not corrode from oxygen permeation. For example, when installing a closed loop system the installer is required to use PEX tubing with an oxygen barrier. Setting up the loop with PEX tubing means that the right type must be used for a properly functioning system.

Pex manifold system