Filters-Pre Filters

Filter sections are suitable for insertion of various types of filters. Filter sections are equipped with easily removable panels to permit
and fasten the filters aft er the inspection and replacement. A complete line of filters are available to meet all kinds of filtration efficiency and requirements. Single or multistation filtration to suit different application conforming to the latest ASHRAE & EUROVENT standards are provided. The filters are arranged in the grid in heavy–duty specially designed galvanized sheet steel frame to avoid air bypass and are removable and washable type.

 

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Drain Pan

Drain pan is made from corrosion resistant Stainless Steel 304 grade as a standard feature. Multislope drain pans are designed as per ASHRAE 62 which ensures that all the condensate is drained and there is no microbial growth inside the unit hence maintains the Indoor Air Quality. The Drain pan is insulated externally with 10 mm closed cell Elastomeric foam to avoid surface condensate from outside. Stainless Steel 316 grade drain pan can be provide as an option.

 

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Cooling & Heating Coils

Standard Chilled water coils are made in either 3/8”, 1/2” & 5/8”dia. seamless copper tubes which are mechanically expanded with
rippled aluminum fins. Th is ensures high heat transfer efficiency, low air resistance and longer coil life. The cooling coil are designed as per AHRI-410 standard. Hydrophilic Aluminum or Copper fins are also available. An additional option of anti-corrosive coatings such as Heresite™, Copon Blue or blygold™ are also available. All Coils are provided with Copper /Mild steel headers. Coils are provided with Brass Threaded Male Adaptors / Connectors. Refrigerant coils are provided with Brass Distributors. Air & Drain vents made of Brass are standard for Water Coils The standard casing material for all coils is Galvanized Steel. Casing can also be manufactured with Stainless Steel. AHRI-410 certified coils can be provided.

 

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Droplet Eliminators

Droplet eliminators are provided where the coil face velocity exceeds 2.54 m/s as a option. The droplet eliminator can be provided in Aluminum or PVC or Stainless steel construction.

 

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Pulley and V Belts

Cast iron pulley with balancing equals to G2.5 is used with minimum of 2 grooves, SPA and SPB type of pulleys are used based on the motor capacity. V belts used are of high grade, anti static and oil resistance type.

 

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Fan and Motor Assembly

Fan and motor are mounted on heavy gauge galvanized steel base frame with high effi ciency vibration isolators (Spring Isolators or
Rubber mounts) ensures no vibration is transmitted to the unit casing. The Isolators are designed for 92 % efficiency. The Isolators are selected on the basis of weight of the fan and motor assembly and the higher value of RPM of the Fan or Motor.

 

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Motors

Standard Foot mounted, TEFC, 3 phase induction motors are provided with standard effi ciency EFF-2, High energy efficiency EFF-1 & premium effi ciency motor can also be supplied. All the motors are standard foot mounted TEFC, IP 54, Class F Insulation with temperature rise to class B. Motors for special application can be provided like Flame proof or
explosion proof. Permanent magnet motors can also be provided.

 

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Fans

Th e unit consist of double inlet double width AMCA certified fans, which can be either Forward, Backward curved or Aerofoil
bladed. The type of blades are selected on the basis of static pressure and efficiency requirement. Single inlet single width fans i.e. Plenum fans are with backward, curved or Aerofoil bladed especially for the Clean rooms and Hospital Projects. Plenum / Plug type backward curved fans with motors directly coupled to the fan is also available as an option. The Fans are AMCA certified for the Sound & Air Performance and Fan grade efficiency. Generally all wheels are statically and dynamically balanced to ISO1940 and AMCA 204 – G2.5 standards. Generally all fans aft er assembly are trim-balanced to ISO1940 and AMCA 204 – G2.5 standard. Plenum fans with high energy efficiency EC motors are also available with low noise, low power consumption and longer durability. Clients looking for high energy efficient units can opt for AHU’s with EC fans, which can save up to 50% of power consumption as compared to conventional fans.

 

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Base Frame

Base Frame is constructed out of the sendzimir Galvanized sheet steel with factory applied epoxy paint & heavy duty lifting holes.
Mild steel channel frames are also provided for larger capacity units. 100 mm high Base frame is provided for the fl oor mounted units.
Hanging supports are provided for the ceiling suspended units to hang the units.

 

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Panel

Panels are sandwich double skin type with outer sheet as Pre painted galvanized steel and inner as galvanized sheet.
Polyurethane form insulation is injucted between the two sheets to make sandwhich panels. A minimum density of 40kg/m3 is
maintained however higher density up to 48kg/m3 can also be achieved. Stainless steel 304, Stainless steel 316 or Aluminium sheets can be provided for double skin panels as an option. The Polyurethane injected panels have an excellent heat insulation and noise reduction properties and add extra mechanical strength and rigidity to the structure. The factory injected PUF is CFC & HFC free and self extinguishing type. The maximum heat transfer coeffi cient for 25 mm, 50 mm and 50 mm thermal break is U = 0.73 w/m3K an 0.35w/m3K respectively. Panel are fi xed to profi le with high quality gasket which has excellent sealing properties and good resistance to compression stress and temperature.

 

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