(function(){ // Run after DOM ready document.addEventListener('DOMContentLoaded', function() { // Helper: find the content controlled by a button function getContentForButton(btn) { const ctl = btn.getAttribute('aria-controls'); if (ctl) return document.getElementById(ctl); // fallback: look for sibling/menu-content return btn.closest('.e-n-menu-item')?.querySelector('.e-n-menu-content') || null; } // Close a single button/menu function closeButton(btn) { const content = getContentForButton(btn); if (content) content.style.display = 'none'; btn.setAttribute('aria-expanded', 'false'); btn.classList.remove('e-n-open'); btn.closest('.e-n-menu-item')?.classList.remove('e-n-open'); const opened = btn.querySelector('.e-n-menu-dropdown-icon-opened'); const closed = btn.querySelector('.e-n-menu-dropdown-icon-closed'); if (opened) opened.style.display = 'none'; if (closed) closed.style.display = ''; } // Open a single button/menu function openButton(btn) { const content = getContentForButton(btn); if (!content) return; // let CSS pick the display where possible; otherwise force block content.style.display = ''; if (getComputedStyle(content).display === 'none') content.style.display = 'block'; btn.setAttribute('aria-expanded', 'true'); btn.classList.add('e-n-open'); btn.closest('.e-n-menu-item')?.classList.add('e-n-open'); const opened = btn.querySelector('.e-n-menu-dropdown-icon-opened'); const closed = btn.querySelector('.e-n-menu-dropdown-icon-closed'); if (opened) opened.style.display = ''; if (closed) closed.style.display = 'none'; } // Close every menu except optional `exceptBtn` function closeAll(exceptBtn) { document.querySelectorAll('.e-n-menu-dropdown-icon[aria-expanded="true"], .e-n-menu-dropdown-icon.e-n-open') .forEach(btn => { if (btn === exceptBtn) return; closeButton(btn); }); } // Toggle function toggleButton(btn) { const isOpen = btn.getAttribute('aria-expanded') === 'true' || btn.classList.contains('e-n-open'); if (isOpen) closeButton(btn); else { closeAll(btn); openButton(btn); } } // Use event delegation so this works even if the menu is injected later document.addEventListener('click', function(e) { const btn = e.target.closest('.e-n-menu-dropdown-icon'); if (btn) { e.preventDefault(); e.stopPropagation(); // avoid immediate document click close toggleButton(btn); return; } // Click outside any menu item -> close all if (!e.target.closest('.e-n-menu-item')) { closeAll(); } }, true); // Also allow Escape to close menus document.addEventListener('keydown', function(e) { if (e.key === 'Escape') closeAll(); }); // Optional: handle touchstart to make mobile feel snappier document.addEventListener('touchstart', function(e) { const btn = e.target.closest('.e-n-menu-dropdown-icon'); if (btn) { e.stopPropagation(); toggleButton(btn); } else if (!e.target.closest('.e-n-menu-item')) { closeAll(); } }, {passive: true}); }); })(); .e-n-menu-item .e-n-menu-content { display: none; } /* optional visual class when open */ .e-n-menu-item.e-n-open > .e-n-menu-content { display: block; }

RT 500-2400

200 mm Energy Recovery Wheels

Variety of heat recovery core options

Select the most suitable type of wheel core for the climatic conditions and heat recovery requirements.

Three options to choose…

Condensation

Supporting latent heat transfer based on condensation.

Enthalpy

Supporting latent heat transfer (humidity) based on differences in the molecular pressure of water contained in the air and the coating.

Sorption

For the highest rate of latent heat transfer (humidity) between supply and return air.

18 tailored sizes

for perfect size-performance fit

Select the most suitable size for your airflow and AHU cross section…

3Å molecular sieve

for pure moisture recovery

Avoiding the transfer of contaminants, bacteria and odors is a significant challenge for modern energy recovery wheels design. The essence of this challenge is to limit the ingress of these pollutants while maintaining high moisture recovery performance in winter and effective air dehumidification in summer.

What principles of physics did we use?

  • We assumed that the only substance we want to transfer between air streams is water, whose kinetic diameter is 2.65 angstroms (1Å = 1.0 × 10-10 meters)
  • We took advantage of the fact that virtually all other particles, which are undesirable odors, pollutants or bacteria, have a diameter much larger than water.

 

We have thus created the most technologically advanced Energy Recovery Wheel, with superb energy recovery performance, at the same time guaranteeing the best protection of ventilation systems hygiene.

Model A C D
RT-500 580 mm 380 mm 500 mm
RT-600 680 mm 385 mm 600 mm
RT-700 780 mm 288 mm 700 mm
RT-800 880 mm 292 mm 800 mm
RT-900 980 mm 292 mm 900 mm
RT-1000 1 080 mm 299 mm 1 000 mm
RT-1100 1 180 mm 314 mm 1 100 mm
RT-1200 1 280 mm 314 mm 1 200 mm
RT-1300 1 380 mm 314 mm 1 300 mm
RT-1400 1 480 mm 314 mm 1 400 mm
RT-1500 1 580 mm 326 mm 1 500 mm
RT-1600 1 680 mm 326 mm 1 600 mm
RT-1700 1 780 mm 326 mm 1 700 mm
RT-1800 1 880 mm 386 mm 1 800 mm
RT-1900 1 980 mm 386 mm 1 900 mm
RT-2000 2 080 mm 386 mm 2 000 mm
RT-2200 2 280 mm 386 mm 2 200 mm
RT-2400 2 480 mm 404 mm 2 400 mm

Heat Recovery Performance

Select the most suitable type of wheel core for the climatic conditions and heat recovery requirements.

Three options to choose…

Performance

Sensible / Latent / Energy Efficiency reaching: 84,5% / 87,5% / 83,7%*

Air pressure drop (minimum / maximum airflow): 74 344 Pascals

Double peripheral sealing system to prevent cross-contamination and boost the heat recovery efficiency by additional 2%

Compliance with Standards

COMMISSION REGULATION (EU) No 1253/2014 – minimum efficiencies for heat recovery systems applied to ventilation units

VDI 6022, SWKI VA104-01 (hygienic standards)

EN 308 – „Test Procedures For Establishing Performance Of Air To Air And Flue Gases Heat Recovery” Accordance certified by EUROVENT CERTITA