Gallery

Gallery

  • View of the 6 assembly lines where every Annexair unit is assembled.
  • View of a refrigeration production line.

  • The production manager’s office with its abundance of windows allows overseeing the production area; the conference room also has this same design.

  • Annexair’s design flexibility allows us to build units as a single piece or with multiple modules. Example of a 25,000 CFM modular unit during the wiring process.
  • All along the assembly process, units move throughout the factory using heavy duty wheels. Example of a 30,000 CFM AHU unit with 160-ton ACCU.
  • Popular configuration incorporating 2 wheels in a V-Shape design for units having height restrictions.
    Example of a 2-wheel unit of 15,000 CFM each.

  • All unit doors are hinged as a standard. Example of a single side access ERU with external coil connections.
  • Example of an air blender in a 40,000 CFM AHU.
  • Example of an AHU with a single supply fan while the return air has 2 fans at the top section.
  • A unit with aluminum interior lining under construction on the assembly line.
  • Large units are built in sections to accommodate transportation restrictions.
    Example of a anti-corrosion coated 40,000 CFM fixed-plate unit.

  • The fixed-plates we use are fabricated by Recuperator, a leading European manufacturer of plate heat exchangers.

  • All outdoor units come standard with a white reflective TPO membrane. This reduces unit solar heat gain and makes water infiltration impossible.

  • Example of a 100% OA make-up air unit with a 30-ton condensing unit integrated on the unit top section. This series (X-DRY ac) includes the Annexair’s V3 concept and nylon mesh guards for condenser coil protection as a standard.
  • Our standard unit assembly consists of elevating all coils above the drain pan where they are supported by rigid stainless steel U-Beams. This design eliminates water carryover and can support excessive coil weight. When dehumidification is required, a 10 in. minimum space is placed between the coils to avoid any re-evaporation.

  • All condensate drain pans are built using # 304 heavy gauge stainless steel with a 3-slope design and thermal break construction.

  • The condensate connection is a 1.25 in. MPT stainless steel pipe with a 0.125 in. thickness for superior rigidity.
  • All drain pans are carefully insulated with EPDM, a thick self-adhesive membrane that is placed on all sides and on a portion of the drain. This precaution prevents any condensation to the unit floor assembly even on units designed for conditions requiring low dew points.

  • Annexair’s reputation for having quiet units is a result of many particularities. One of them is the addition of EPDM, a thick synthetic rubber placed between the unit floor base and floor panels. This diminishes sound emissions and vibrations cause by motors and compressors reducing radiated sounds to the unit base.

  • Here you can see layers of EPDM applied to each structural steel cross-beam prior to mounting the floor panels. All Annexair base floors are made of G90 galvanized steel.

  • Annexair makes every possible effort to ensure that the floor remains intact for the life of the unit. Once the lifting lugs are machined they are hot-dipped in galvanized zinc.

  • Annexair uses only high-efficient direct drive plug fans on all of our products. Our unit fan assemblies can vary from a single fan to multiple fan configurations. Each unit comes with a factory programmed variable frequency drive (VFD).
  • The majority of our fan assemblies come with a heavy-duty 6” deep flexible duct connector. Annexair uses a thick rubber material which is securely affixed to a square steel frame. This superior quality connector makes air-leaks impossible.

  • Example of a side by side 2 fan configuration.

  • Example of a stacked fan arrangement. Each fan is individually isolated.

  • Driven by our constant pursuit to surpass customer expectations, Annexair selected a remarkable European heat exchanger, Econovent. Invented in 1956 by Carl Munters, the wheel is still being produced 56 years later and is found in hundreds of thousands of installations worldwide. The enthalpy wheel is used to recovery both heat and moisture and is coated with a desiccant type silica gel. This superior quality wheel has maintenance-free integrated bearings, a uniformly corrugated matrix and a low pressure drop. All wheels come with a ten-year warranty. The Econovent wheel is part of the Fläkt Woods Group.

  • The uniformity of the wheel flutes is a result of a sophisticated winding process developed by Europeans. This winding creates a perfect laminar airflow which reduces pressure drop and improves wheel stability. The matrix is winded by using alternating flat and corrugated aluminum layers which create a rigid and smooth surface. This hard surface is solid enough to receive Annexair’s unique compression sealing system. The depth of the wheel is always 8“and ranges in size from 2’ to 16.5’ diameter.

  • Annexair has developed an innovative and unique contact seal system that uses high-performance polyethylene strips mounted on each side of the wheel, then compressed by stainless steel clips. Assisted by the effect of the compression clips, the seals glide towards the wheel. In short time, the seals mold to the wheel matrix to create an enhanced low-leak seal system.

  • Annexair produces its own wheel cassettes which are made with an aluminum profile system and G90 galvanized steel. Example of a segmented 96” diameter wheel.

  • Recognizing the importance of the wheel drive motor as a critical component of any system, Annexair has selected Nord-Siemens drive motor which has proven its reliability and durability in the thousands of installations we have performed over the years. The reinforced fiberglass wheel belt is a Power Twist type from Fenner Drive. This belt is indestructible!
  • During the unit assembly, we ensure that all delicate surfaces such as coils and wheels are protected against damage with rigid plastic boards. This is part of our quality assurance policy.
  • All coils can be ordered with protective coating.
  • Units ordered with a gas heat option will include a tubular furnace-type duct manufactured by one of the most renowned companies in the industry. All heat exchangers come with stainless steel 409 tubing as a standard.
  • For safety purposes, a grid is located above all floor openings. The grid is made of rigid anti-skid fiberglass material secured by removable stainless steel brackets.
  • Example of a 100% OA make-up air unit with a 84-ton condensing unit integrated on the unit top section. This series (X-DRY ac) includes the Annexair’s V3 concept and nylon mesh guards for condenser coil protection as a standard. The refrigeration system of this model modulates from 7 to 84 tons in perfectly linear increments.
  • Example of the condenser coil section of a 180-ton ACCU with 115,000 CFM of condensing air. This section features easy access to all piping and components, while compressors are installed in a service vestibule behind the piping.

  • Annexair uses German-made Ziehl-Abegg condenser fans. The superior quality of these fans easily surpasses all other axial fans in the industry. These fans have 7 die-cast aluminum blades placed in a safety housing. The fan and motor are mounted inside a high profile bell mouth, which lowers the fans acoustical noise levels. Epoxy coating is standard on the fan assembly.

  • For very large rooftops, Annexair will design the project with a vented service vestibule which will house the main power and control panel. These projects are tailored to the customer needs.
  • Example of an integrated 160-ton ACCU with stacked compressors and sound jackets which reduce the compressors noise. Note that each compressor is individually piped with a vibration absorber.
  • Example of a 15,000 CFM with 60-ton WSHP modular indoor unit. The installation restrictions of this project forced our engineers to design a unit that can be entirely factory assembled and tested, and then easily disassembled for transportation. On site, a quick plug concept was engineered to ease the re-connection of the refrigeration lines and electrical wiring. The project consisted of 50 units in total.
  • Similar to the production area, the electrical panel workshop is clean, well-organized and functional.
  • Designed and built in-house, our control panels include all of the unit wiring and components, and these are grouped together and connected to a single power source in the field. At Annexair, our engineering team has mastered the art of designing control panels that other can only envy.
  • Example of an easy-to-use unit PLC with LCD screen for stand-alone applications, which allows for multiple types of communication protocols.
  • The bright color of our backplates is taken from the “safety color chart” that we see in many equipment and help to visualize every component. Note that all the wiring is held within the grey electrical race ways eliminating open wiring while giving it a professional appearance.
  • Our focus on continuous product improvement has recently led our engineering team to reconfigure our electrical panel; separating controls from high-voltage sources. All equipment keypads are grouped together in one location. Annexair is gradually implementing this new feature across our complete product lines.
  • For certain applications, units can come with a larger remote LCD display from Carel. Because this display has 8 lines, field technicians appreciate the volume of information that can be read on a single screen. An extra remote controller can also be connected to the unit PLC for in-room serviceability.
  • Typical electrical panel door with lockable non-fused disconnect switch.
  • Each unit includes laminated electrical wiring diagrams, refrigeration piping, unit nameplate and a spare kit of drawings in a weathertight envelope.
  • All electrical control panel doors have door stoppers to facilitate maintenance and improve security while servicing.
  • As a standard, all unit wiring are grouped together with tie-wraps and are always located in the upper sections of the unit. Connectors are used for all main wiring when passing through internal partitions and for all motor connections. Also, all Annexair control panels are vented using indoor fan.
  • Example of internal pipe chase connections.
  • Example of a evaporative cooler made by Premier Industries.
  • Example of a humidifier (made by Nortec) mounted above a stainless steep drain pan.
  • Example of an indoor Annexair unit using a WSHP from Ecoref with external water connections.
  • Example of a slide-out filter assembly.
  • All units are shipped with multiple yellow tags that warn field contractors where important parts are located within the unit, such as filters, sensors, curb gasketing, etc.
  • As a standard, Annexair will always include 2 testing ports per unit airflow; inlet and outlet of the fan(s).
  • As a standard, Annexair OA hoods have 4-in. hinged rain storm louvers for easy access to outside air pre-filters. These oversized hoods are 100% made of aluminium and include a birdscreen.
  • No tool is required to access outside air pre-filters.
  • Filter racks are mounted prior to the outside air dampers which keeps them clean. Filters can be easily replaced without the use of a ladder due to Annexair’s unique slide-up filter rack system.
  • As a standard, all indoor units are shrink-wrapped prior to shipping with their unit tag label on both sides.
  • Our large modern conference room has a good view of the production area.