(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; }
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SFC 25-81

4″ Energy Recovery Wheels

Read SFC 25-81" Leaflet

Variety of energy 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.ortfolio.

Sorption

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

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.ortfolio.

Sorption

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

Complience with standards

AHRI Standard 1060 – „Performance Rating of Air-to-Air Exchangers for Energy Recovery Ventilation Equipment”, Accordance certified by AHRI Certification

Sensible Effectivness

75,7%

Latent Effectivness

87,9%

Total Effectivness

74,7%

11 tailored sizes: 25 – 81 in

Molecular physics for pure moisture recovery

…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.

To solve this problem, we engaged advanced knowledge in the field of molecular physics and turned it into a specific technological solution, creating the…

3Å molecular sieve

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.

Design

Monolithic construction of the heat accumulation structure based on a patented foil forming technology that interlocks subsequent foil layers.

Single diaphragm casing design:

  • Facilitates transport and installation of the wheel
  • Easy and quick adaptation of the design and drive position to actual instalation conditions.
Size A C D E F G H I J K [LBS]
SFC-25 29.00 2.04 13.44 1.32 4.36 5.39 1.66 6.74 1.62 3.54 81
SFC-30 34.00 2.04 15.98 1.32 4.36 5.39 1.77 6.80 1.68 3.54 101
SFC-36 39.80 2.82 18.47 1.32 4.36 5.39 2.32 7.40 2.28 3.54 128
SFC-41 44.00 4.27 19.85 1.57 4.36 5.99 2.14 7.30 2.14 3.54 165
SFC-46 50.00 4.27 22.86 1.57 4.36 5.99 2.20 7.36 2.20 3.54 194
SFC-52 56.00 4.27 25.96 1.57 4.36 5.99 2.73 7.89 2.73 3.54 231
SFC-58 62.40 4.27 29.06 2.05 4.36 5.14 3.81 8.97 3.81 3.54 308
SFC-64 68.00 5.00 31.50 2.05 6.07 6.77 3.93 9.64 3.93 4.09 363
SFC-68 72.00 6.00 33.00 2.05 7.07 6.26 3.93 9.64 3.93 4.09 422
SFC-74 78.00 6.00 36.00 2.05 7.07 6.26 3.93 9.64 3.93 4.09 495
SFC-81 85,00 6,00 39,50 2,14 7,07 6,26 3,93 9,64 3,93 4,09 561

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Swiss Rotors

Swiss Rotors Inc.
1075 Highway 124 Building 300, Suite 300
Hoschton, GA 30548
United States of America

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SFC 21-83 Energy Recovery Wheels

RT 21-83 Energy Recovery Wheels

RT 500-2400 Energy Recovery Wheels

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