SKM Air Handling Units are designed to a high engineering standard to provide the requirements of ventilation, heating, cooling, de-humidification and air distribution to a conditioned space. Units are manufactured in a facility registered to ISO 9001:2008 manufacturing quality standard. Coil performance is certified in accordance with AHRI-410 Standards. SKM Air Handling Units are applicable for indoor and outdoor installation and they are ideal for large halls, schools, offices, banks, workshops, laboratories, restaurants, cinemas, hospitals, departmental stores, mosques and super markets, etc. SKM manufacturing Air Handling units in three different series, Modular Air Handling Units (MAH), Hygienic Modular Air Handling units (HMAH) and Comfort Air Handling Units (CAH). Modular Air Handling Units (MAH) Modular Air Handling Units (MAH) manufactured in modular sections and can be provided with a whole range of standard components, in many different configurations.

Units can be supplied with a whole range of panel configuration to suit every application. Different sectional arrangements and fan discharge positions are possible depending on the site constraints and requirements. MAH units are with thermal break system applied for both panels and frames. MAH Units are available in 25 models to deliver from 1000 cfm (472 l/s) to 60 000 cfm (28318 l/s) nominal air flow rate against total static pressure up to 8.0 inWG (2 000 Pa). Certification for MAH Series : Certified by EUROVENT (Certification No. 05.01.286) according to standards EN1886 & EN13053. Certified in accordance with AHRI 430 standard for fan performance. Coil performance are certified in accordance with AHRI 410 standard. Latest Catalogue Bulletin No.: 021/2016A Hygienic Modular Air Handling units (HMAH) Hygienic Modular Air Handling Unit (HMAH), are ideal, where the requirements of cleaning and hygiene are mandatory, like hospitals, pharmaceuticals, laboratories, food industry, electronic facilities and clean room applications.

HMAH Units are available in 21 models to deliver from 1000 cfm (472 l/s) to 42500 cfm (20058 l/s) nominal air flow rate against total static pressure up to 8.0 inwg (2000 Pa). SKM hygienic AHU's are tested and certified by TÜV SÜD Germany according to DIN 1946-4 and VDI 6022 standards. Latest Catalogue Bulletin No.: 097/2015 A Comfort Air Handling Units (CAH)used 15 ton ac unit SKM CAH Series Air Handling Unit, designed for indoor installation, compact and rigid in construction, completely factory assembled and offer easy site handling and maintenance, minimum installation time and labor expense. ceiling fan vs air conditioner costCAH units are economic solution for most applications, available in both horizontal (HCAH) & Vertical (VCAH) and also available in Modular construction (HCAH-A & HCAH-2A).best energy star ac units

CAH series, available in 15 sizes, cover the range of 900 - 20000 cfm (425 - 9440 l/s) nominal air flow rate and total static pressure up to 5.0"wg (1250 Pa). Latest Catalogue Bulletin No.: 019/2014 Aweatherproof construction variant for outdoor installation TROX AUTOMATICALLY CHECKS ENERGY EFFICIENCY ACCORDING TO ECODESIGN DIRECTIVE With the adoption of the Kyoto Protocol, the European Union has committed itself to reducing CO2 emissions by at least 20 percent by 2020. In order to reach this goal, the EU adopted already in 2005 the Energy-Using Products Directive. The Energy-Related Products Directive 2009/125/EG, colloquially called 'ecodesign directive', defines minimum requirements for many energy-related products. Within the European Union, air handling units have to meet new energy efficiency requirements from 1 January 2016 onwards. The next step after that will become effective two years later, on 1 January 2018. TROX air handling units of Type X-CUBE are configured to individual customer requirements with a dedicated configuration software.

This software automatically considers the new energy efficiency requirements for all X-CUBE air handling units and hence ensures their correct configuration. All X-CUBE air handling units that are produced and placed on markets of the European Union from 1 January 2016 onwards meet the new requirements. Please find attached the table ErP – Efficiency Requirements as of 2016 Capacity Rage: 1200 CFM to 40000 CFM Capacity Rage: 1200 CFM to 18000 CFM Capacity Rage: 1200 CFM to 12000 CFM Capacity Rage:Up to 5000 CFM Capacity Rage: 1200 CFM to 20000 CFM Capacity Rage:1200 CFM to 30000 CFM Capacity Rage: Up to 30000 CFM Modern building become more and more tighten insulated. This makes the mechanical ventilation obligatory, in order to ensure health and comfort of the inhabitants. This type of air handling units allows to incorporate a system with intermediate coolant to transfer heat between the fresh and exhausted air. The efficiency of this type of systems is between 35 and 50%.

TANGRA company has rich experiance in the design and production of HVAC units and systems. Production, Research and Development Department and HVAC Laboratory are situated at more than 8000sq.m. Well educated prefessionals are responsible to satisfy every specific HVAC need. Machines with extremely high precision and efficiency assure the high quality of the production. Air handling units are used in the following ventilation and air-conditioning installations: - Residential and office buildings - Super- and hypermarkets - Agricultural and industrial projects. Certified by TÜV Rheinland.Air Handling Unit Components: HeatThere are many different types and arrangements of heating systems for air handling units and these types of heating systems and arrangements of heating systems vary from commercial to residential. Some air handling units do not have any heat source inside them at all but have remote heat for zoning. The air handling unit provides the air flow and the remote heaters provide heat for zoning.

Sometimes the air handling unit is a VAV air handling unit and other times it is just to provide air for a duct heater whether the duct heater is gas fired or electric. For air handling units which some have heating systems inside the five main ways of providing heat for air handling units are:Electric heat is probably the most used type of heating systems in commercial systems for VAV boxes and in some residential especially for the back-up heat source for heat pumps. Electric is 100% efficient but it costs more to produce the same amount of per BTU as compared to other ways of converting fuels to heat. Electric heating uses resistance electrical strips or metal to generate heat. When electricity passes through this metal it heats up. This metal is often an alloy composed mainly of nickel-chromium. The voltage which feeds these electric heat strips is high voltage of 240V for residential and 277V for commercial systems. The electric heat strips pull high amps and it is necessary to provide the electric heat circuit with the proper circuit protection and wire size to handle the higher amp draws which occur in these circuits.

For each KW the BTU output will be 3415. For a 10KW (34,150 BTU/h) electrical heating system which utilizes 240V for main power the amp draw will be (10,000 watts/240 volts = 42) 42 amperes. There are many different areas in the National Electrical Code (NEC) which are applicable to different configurations of electrical heating elements inside of air handling units which the manufacturer engineered into the system. Outside the air handling unit it is necessary for field wiring to the proper size. Circuit protection and wire size for electrical resistance type heating needs to meet the NEC code for safety purposes. Consult with an electrician or electrical engineer for proper sizing requirements. Safety switches in the air handling unit control wiring provide additional fire hazard protection.Electrical duct heaters mounted remotely from the air handling unit have different ways of proving air flow before the electrical heating can be energized. Older models have sail switches which close when air flow is present in the ductwork.

When the blower energizes to provide airflow the sail switch closes and allows the electric heat control circuit to energize if necessary. Other types of switches for proving air flow before the electric heat is allowed to energize are pressure switches which work on a pressure differential, current switches which detect current on the blower. When the air handling unit blower current is detected a switch inside the current switch closes and allows the electrical heating control circuit to energize as necessary. Other types of switches or air flow proving methods may be employed to ensure there is airflow before allowing the remote duct mounted electric heater to be energized.There are many different types of gas furnaces used to provide heating. The basics of gas furnace components are covered in detailed components of gas furnaces in the gas furnace section. Whenever dealing with any appliance which burns fossil fuels it should be noted that carbon monoxide detectors should be present in the spaces where heat is provided by this appliance.

That being said, many manufacturers provide the best engineering to ensure safety of their appliances but accidents do happen. Heat exchangers and flues have miniscule failure rates but these failures do occur. Machines break down and accidents happen and it best to take proper precautions to protect the safety of all occupants of the dwelling where heating is provided by these appliances. Natural gas is the most popular form of gas heating followed by propane. Natural produces approximately 1000 to 1100 BTU’s per cubic foot while propane produces 2600 to 3200 BTU’s per cubic foot. Check with your local gas company or propane provider for specific BTU’s. Natural gas is available only where provided by a pipeline from the gas company while propane is portable and can be delivered to a storage tank via truck. Natural gas is lighter than air while propane is heavier than air and precautions against leaks should be addressed. Both gases have an odorant additive so that leaks can be sensed by smell.

This odorant smells like rotten eggs and if you smell this smell around any gas equipment call the gas company or your local fire department immediately.An air handling unit which uses gas for heating comprises of gas heating controls including the gas valve, a manifold, and gas burners. The gas burners are inside the heat exchanger and heat the heat exchanger to nearly 2000° F. The heat exchanger is designed to withstand these temperatures and keep the combustion chamber isolated from the air which passes over the combustion chamber. Gas safety controls which are included in the safety circuit include a temperature sensing device which prevents too much heat from building up in the combustion chamber. If the temperature inside the heat exchanger reaches a high limit set point then the gas safety circuit disengages the burners and calls for the fan to run to dissipate the heat before allowing the burners to reignite. High-efficiency furnaces or two stage heating furnaces typically have an induced or forced draft motor which pulls or pushes the combustion gasses through the combustion chamber(s) and forces the combustion gases out to the flue for ventilation.

Depending on the flue temperatures and the efficiency of the air handling unit furnace will depend on the type of flue used. Additionally, considerations for the type of flue used are the vicinity of combustible materials near the flue. Consult the Fuel Gas Code, the Mechanical Code, or you local Mechanical Inspections for these specific considerations.There gas furnaces which are remotely located from the air handling unit which are installed in the duct system. These are called gas duct heaters and are completely reliant on air flow from the air handling unit before the can fire and provide heating. The same methods employed for remote electric duct heaters are the same for gas duct heaters. There must be a way to prove air flow before the furnace can fire. See electric heating for various methods employed to prove air flow.Oil is used for many different heating systems including in forced-air air handling systems. The heat exchangers and safety precautions as noted with gas furnaces apply to oil furnace air handling units as well.

Oil provides 140,000 BTU’s per gallon. Oil heating controls vary depending on the manufacturer and the age of the equipment. The oil burner components consist the burner housing, a burner control, a blower motor for primary air, an oil pump, a step up transformer, igniters, the oil gun, and a nozzle. All these components combined and operating properly cause a flame to be produced inside the combustion chamber. Most oil furnace air handling units get their fuel from a remote tank with copper tubing or steel pipe connecting the tank with the oil burner. Considerations for tank location and distance from the burner should be made according to manufacturer’s recommendations. For environmental considerations and for proper mechanical operation this oil delivery line should not have any leaks. Additionally, there is an oil filter located in this line usually near the furnace. This oil filter needs to be changed from time to time otherwise, it will become clogged and the burner may not operate properly.