Air Distribution Systems
The Zehnder ComfoFresh air distribution system brings fresh air to all supply rooms and simultaneously removes moist or contaminated air and odors from extract rooms. Air is exchanged in all habitable rooms without drafts or bothersome noises, at the highest possible efficiency using the cascade distribution principle. Adjustable diffusers and damper inserts allow for fine adjustment of air volumes in each room when the system is commissioned. Supply and return air flows optimally through small ducts in walls and ceilings. Ducts are configured in a radial design connected to manifolds to ensure uniform system pressure.
Below are some of the key components in the air exchange system. After you “Request a Quote” through our website, a Zehnder America Technical Sales Representative will prepare a preliminary system design and a quote listing the specific components needed for each project to optimize performance.
COMFOPIPE DUCTING
Insulated Expanded PolyPropylene (EPP) ducting allows for easy installation of Outdoor Air and Exhaust Air ducts to the exterior grilles. ComfoPipe Compact is available in 1 meter-long (39″) straight sections, 45-degree bends and connection sleeves, all in three different sizes: 125mm (4.92″), 160mm (6.3″) and 200mm (7.88″) inside diameter. (See specifications for dimensioned drawings.)
INTERIOR DUCTING: COMFOTUBE
ComfoTube is flexible air distribution pipe, outside ribbed, inside smooth according to DIN EN 60529. The ComfoTube-75 can easily be laid in concrete, directly into the earth or in riser ducts and suspended ceilings. The Zehnder ComfoTube can be easily and quickly installed. Medical grade High Density Polypropylene (HDPE) provides clean, efficient delivery of air.Com
INTERIOR DUCTING: COMFOFLEX
ComfoFlex is 3″ reinforced flex duct with a Zehnder proprietary design to minimize turbulence and make connecting to Zehnder distribution components a snap. ComfoFlex is UL listed as a duct, meeting requirements for both flame spread and smoke development.
COMFOWELL SILENCER AND CASINGS
The flexible, multi-function design of the ComfoWell components allows for assembled combinations of a silencer, fine filter, activated carbon filters, and manifold. The components can be easily and securely coupled using sliding clips supplied.
- ComfoWell 220 Specification
- ComfoWell 320 Specification
- ComfoWell 420 Specification
- ComfoWell 520 Specification
- ComfoWell 625 Specification
- ComfoWell Manifold CW-M T Installer Manual
- ComfoWell 320 to CA 200 Mounting Instructions
- ComfoWell 320 to CA 350 Mounting Instructions
- ComfoWell 520 to CA 350 Mounting Instructions
- ComfoWell 520 to CA 550 Mounting Installation
RND-2T ROUND BOOT
The RND-2T Round Boot is used in combination with either the supply or return diffuser (Luna-S, Luna-E or Venezia grille). Each Boot fits within a 2X4 wall space, easily connects to ComfoTube or ComfoFlex ducting with our Twist Connectors, and mounts flush with ceiling or walls with no need to cut.
RND-3T ROUND BOOT
The RND-2T Round Boot is used in combination with either the supply or return diffuser (Luna-S, Luna-E or Venezia grille). Each Boot fits within a 2X4 wall space, easily connects to ComfoTube or ComfoFlex ducting with our Twist Connectors, and mounts flush with ceiling or walls with no need to cut.
RCT-2T RECTANGULAR BOOT
The Rectangle Boot is a supply or return register used in combination with the Roma grille. The Rectangle Boot fits within a 2X4 wall space, easily connects to ComfoTube or ComfoFlex ducting with our Twist Connectors, and mounts flush with walls with no need to cut.
FILTERS
Filters are available for each HRV or ERV in the Zehnder range, as well as for the ComfoWell Filter Casings. G4 Filters are an equivalent to a MERV 7-8 filter, while the F7 Filters are an equivalent to a MERV 13 filter. ComfoWell Casing filters are available in F9 (MERV 15) and activated carbon options.
REGISTER COVERS
Zehnder provides attractive and discrete grilles for both the round RND-2T and -3T register boots and the rectangular RCT-2T register boots. The “Venezia” is a round grille, available in white (paintable). The “Roma” is a rectangular grille, available in white (paintable) and stainless steel. All grilles sit flush against the drywall when mounted onto the register box.
SUPPLY DIFFUSER: Luna-S
The Supply Diffuser is mounted in the diffuser box RND-2T or RND-3T, and provides even distribution of air in a 360-degree pattern, and is adjustable for flows during commissioning.
EXTRACT DIFFUSER: Luna-E
The Extract Diffuser is mounted in the diffuser box RND-2T or RND-3T, provides even extraction of air, and is adjustable for flows during commissioning.