SpiroExpand pressurization
Pressurization is the key to a good system design. Our experience, research and targeted investigations have taught us that most issues within heating and cooling systems are closely related to insufficient pressurization.
Often even straightforward problems are overlooked during design, installation, and maintenance. As a result, the system fluid’s quality is seriously compromised, and a potentially fatal series of events will occur. This dramatically reduces the efficiency of the system and causes premature failure of major system components.
Often it ends up in high operating costs for the plant and considerable expense for the owner and annoying inconveniences for the end-user. Parts need to be replaced, and the system must be cleaned persistently, and time and again, chemicals are applied. All this to achieve a “status quo” for the circulating fluid.
A good expansion system prevents air problems, leaks and corrosion
Want to save costs and work? Then start with the basics: your installation's pressure maintenance and expansion system. Because if it's not properly designed, installed or maintained, problems quickly arise that cost you time, money and customer satisfaction.
What happens when an expansion system malfunctions? When there is negative pressure in the installation, the system sucks in unwanted air via automatic air vents, poor seals or small leaks. That air causes:
When overpressure occurs, the safety valve opens. As a result, water is lost and fresh (tap) water is automatically refilled. This water contains oxygen and other (dissolved) gases, which promote corrosion.
Over time, the corrosion inhibitors present are also diluted, reducing the protective effect of the system water. Corrosion and contamination then lurk again.
Each heating or cooling system puts different demands on a pressure control system. Also, operators place additional requirements on the equipment of the pressure control systems, on the possible signal exchange with other parts of the installation or control system and operational reliability.
SpiroExpand covers a full range of solutions, from the most basic setup to the most complicated system. If you can’t find the right plan for you, we’ll be happy to create a customized set up specifically for your problem.
Using a pressurization unit means optimized pressure in your system
and saving space in your boiler room!
The SpiroExpand PicoControl Kompakt (EPCK) is available in 6 system versions , with different vessel volumes: 45, 75, 125, 200, 300 or 500 liters.
The working pressure range extends up to 4.0 bar.
The SpiroExpand PicoControl Kompakt is equipped with a single pump (SOLO, 1x 100%) and overflow valve (1x 100%).
The SpiroExpand Multicontrol Kompakt (EMCK) is available in 102 possible versions with 5 possible vessel volumes : 45, 75, 125, 300 or 500 liters. Two more barrels can be added.
The SpiroExpand MultiControl Kompakt is available with one (SOLO) or two (DUO 50% or Maxi 100%) pumps and an overflow valve. The DUO and MAXI can also be equipped with two overflow valves (TWIN). There are also a variety of partner packages available.
The SpiroExpand Multicontrol Modular (EMCM) is available in 75 system versions and with 12 vessel volumes from 200 to 10,000 litres. They can be expanded several times to larger volumes.
The SpiroExpand MultiControl Modular is available with one (SOLO) or two (DUO 50% or Maxi 100%) pumps and an overflow valve. DUO and MAXI can also be equipped with two overflow valves (TWIN). There are also a variety of partner packages available.
The SpiroExpand TopContol Modular (ETCM) is a modular expansion and pressure maintenance unit, available in 25 system versions, for combination with the pressureless EC expansion vessels (0.5 bar safety valve).
The SpiroExpand TopControl Modular is available with one (SOLO) or two (DUO 50% or Maxi 100%) pumps and an overflow valve. DUO and MAXI can also be equipped with two overflow valves (TWIN). There are also a variety of partner packages available.
The SpiroExpand Multicontrol Cool (EMCC) is available in 6 system versions and 4 drum volumes of 125, 200, 300 or 500 liters.
Software updates should only be performed by our factory customer service or by trained service partners who are familiar with the devices and are aware of potential hazards and risks caused by software updates. In the event of non-conformity and direct or consequential damage, any warranty or warranty claim is excluded.
Note: During the implementation of the software update, the operation of the device is not guaranteed!
For the degassing of the system water, we recommend observing the guidelines VDI 4708 and VDI 2035-2. For the best possible degassing in heating and cooling systems, a separate vacuum degasser or microbubble air separator is required in addition to the pressure step degasser in the SpiroExpand expansion units.
The degassing function of the SpiroExpand units reduces air-related problems in closed water circuits, but is often insufficient to also remove dissolved gases from the system.
More information about Optimal Degassing
Our range of vacuum degassers Our range of microbubble air separators
In the document below you find 2 connection diagrams with the SpiroExpand MultiControl Kompakt Solo in combination with our vacuum degassers:
A SpiroTrap dirt separator with magnet is also added to the connection diagram to ensure that your system water will be free from dirt and magnetite at any time.
These are ‘passive’ pressure management systems. A preset gas pressure in the membrane expansion vessel is used for pressure control. Because membrane expansion vessels do not have a make-up function, we ideally combine this type of pressure control with a vacuum degasser including a make-up function.
The expansion tanks are available in 12 configurations and with volumes between 2 -3000 litre and an operational pressure range from 3.0 – 25 bar.