Zamil Air Conditioners is the largest air conditioning supplier in the Middle East. It manufactures and markets a wide range of air conditioners from small room units to large chillers. Zamil was founded in 1974 in Saudi Arabia and is a leading manufacturer with operations across the Middle East and in Europe. It has four subsidiary companies that work together to design, manufacture and service air conditioning units and solutions under several brand names.
Este documento describe el sistema Holedeck, un nuevo sistema de forjado con perforaciones desarrollado por Alberto Alarcón + asociados. El sistema Holedeck consiste en losas de hormigón aligeradas con perforaciones que permiten el paso de instalaciones a través del canto de la losa. El sistema ofrece varias ventajas como ahorro de espacio, materiales y costes de construcción, así como mejor aislamiento acústico y térmico en comparación con sistemas convencionales. El documento explica los componentes, montaje, comportamiento estructural y
El documento describe diferentes sistemas estructurales como muros estructurales, postes y vigas, marcos rígidos, armaduras y arcos. Explica las características y funciones de cada sistema. También analiza conceptos como la configuración estructural, el proceso de diseño estructural y la importancia de la estructura en la arquitectura.
Este documento trata sobre el diseño de miembros estructurales de acero sometidos a tracción pura. Explica que la resistencia a la tracción depende del área de la sección transversal, incluyendo el área bruta total, el área neta que resta el área de los huecos, y el área efectiva. También cubre cómo la presencia de huecos reduce la resistencia, y los métodos para calcular el área neta en secciones con cadenas de huecos.
Este documento presenta los requisitos de diseño sismo-resistente de la Norma Ecuatoriana de la Construcción (NEC). Define conceptos como zonas sísmicas, espectros de diseño y tipos de suelo. Explica los procedimientos para determinar las fuerzas sísmicas de diseño mediante análisis estático o dinámico. También cubre temas como la separación entre estructuras, la importancia de los edificios y la configuración estructural. El objetivo es establecer criterios para el diseño seguro de edific
Detalles y cortes de estructuras de concreto armadoCarlos Bravo
Las estructuras de concreto armado son aquellas que se emplean en las modernas construcciones de edificios, lozas, complejos habitacionales y demás edificaciones que requieren una construcción rápida y económica con el fin de ahorrar costos tanto en materiales como en mano de obra y tiempo de terminación.
Este documento presenta información sobre el predimensionamiento de diferentes elementos estructurales como cimientos, zapatas, vigas, losas y concreto. Explica conceptos como cimientos corridos, zapatas aisladas, dimensionamiento de vigas y losas. También describe factores a considerar en el diseño de mezclas de concreto como trabajabilidad, resistencia, tamaño máximo de agregado y ajustes por humedad. El objetivo es brindar herramientas para el análisis y diseño preliminar de estructuras.
Este documento trata sobre la impermeabilización en la construcción. Explica que el ser humano siempre ha buscado protegerse de la inclemencias del clima mediante sistemas de impermeabilización. Describe los desafíos actuales como impermeabilizar terrazas, cubiertas verdes y subterráneos profundos. También define conceptos como sistema de impermeabilización e introduce los tipos principales de humedad: por capilaridad desde el suelo, por gravedad desde la cubierta, e infiltración lateral por lluvia.
Este documento describe el sistema Holedeck, un nuevo sistema de forjado con perforaciones desarrollado por Alberto Alarcón + asociados. El sistema Holedeck consiste en losas de hormigón aligeradas con perforaciones que permiten el paso de instalaciones a través del canto de la losa. El sistema ofrece varias ventajas como ahorro de espacio, materiales y costes de construcción, así como mejor aislamiento acústico y térmico en comparación con sistemas convencionales. El documento explica los componentes, montaje, comportamiento estructural y
El documento describe diferentes sistemas estructurales como muros estructurales, postes y vigas, marcos rígidos, armaduras y arcos. Explica las características y funciones de cada sistema. También analiza conceptos como la configuración estructural, el proceso de diseño estructural y la importancia de la estructura en la arquitectura.
Este documento trata sobre el diseño de miembros estructurales de acero sometidos a tracción pura. Explica que la resistencia a la tracción depende del área de la sección transversal, incluyendo el área bruta total, el área neta que resta el área de los huecos, y el área efectiva. También cubre cómo la presencia de huecos reduce la resistencia, y los métodos para calcular el área neta en secciones con cadenas de huecos.
Este documento presenta los requisitos de diseño sismo-resistente de la Norma Ecuatoriana de la Construcción (NEC). Define conceptos como zonas sísmicas, espectros de diseño y tipos de suelo. Explica los procedimientos para determinar las fuerzas sísmicas de diseño mediante análisis estático o dinámico. También cubre temas como la separación entre estructuras, la importancia de los edificios y la configuración estructural. El objetivo es establecer criterios para el diseño seguro de edific
Detalles y cortes de estructuras de concreto armadoCarlos Bravo
Las estructuras de concreto armado son aquellas que se emplean en las modernas construcciones de edificios, lozas, complejos habitacionales y demás edificaciones que requieren una construcción rápida y económica con el fin de ahorrar costos tanto en materiales como en mano de obra y tiempo de terminación.
Este documento presenta información sobre el predimensionamiento de diferentes elementos estructurales como cimientos, zapatas, vigas, losas y concreto. Explica conceptos como cimientos corridos, zapatas aisladas, dimensionamiento de vigas y losas. También describe factores a considerar en el diseño de mezclas de concreto como trabajabilidad, resistencia, tamaño máximo de agregado y ajustes por humedad. El objetivo es brindar herramientas para el análisis y diseño preliminar de estructuras.
Este documento trata sobre la impermeabilización en la construcción. Explica que el ser humano siempre ha buscado protegerse de la inclemencias del clima mediante sistemas de impermeabilización. Describe los desafíos actuales como impermeabilizar terrazas, cubiertas verdes y subterráneos profundos. También define conceptos como sistema de impermeabilización e introduce los tipos principales de humedad: por capilaridad desde el suelo, por gravedad desde la cubierta, e infiltración lateral por lluvia.
Arte y arquitectura del siglo xx en mexjcoAoi Shinigami
Este documento describe el desarrollo de la cultura nacionalista en México después de la Revolución de 1910. Se exploran tres estilos arquitectónicos (neocolonial, neoindigenista y art decó) que intentaron establecer una identidad cultural mexicana distintiva, rechazando las influencias del porfiriato. El muralismo también jugó un papel importante en la promoción de los ideales de la Revolución a través de obras que representaban la historia y cultura de México.
Este documento presenta el catálogo de gradas prefabricadas para instalaciones deportivas de la compañía Norten PH. Describe las diferentes series de gradas, peldaños, placas de remate y detalles de montaje, incluyendo dimensiones, pesos y usos recomendados. También menciona referencias de obras realizadas con este sistema de gradas prefabricadas como campos de fútbol, plazas de toros y otros recintos deportivos.
El documento describe diferentes sistemas estructurales de concreto, acero y madera. Explica que los miembros de concreto están constituidos por hormigón y acero de refuerzo que trabajan juntos para resistir compresión y tracción. También resume las ventajas y desventajas de sistemas aporticados, de muros portantes, tridimensionales de cerchas y de madera.
El documento presenta los planos de un proyecto de construcción de un estacionamiento. Incluye detalles sobre las dimensiones y materiales de los cimientos, losas, vigas, columnas y muros de contención. Asimismo, proporciona información sobre el propietario, superficies, director de obra y responsables del proyecto.
Este documento presenta una introducción a los entrepisos planos de hormigón estructural. Describe tres tipos básicos de entrepisos: 1) entrepisos sin vigas, 2) losas armadas en una dirección, y 3) losas armadas en dos direcciones. Explica brevemente cada tipo y cómo se indican en planos, incluyendo detalles sobre la nomenclatura y armaduras utilizadas. El documento proporciona información general sobre consideraciones de diseño para entrepisos de hormigón.
Este documento presenta una introducción a los métodos de diseño estructural. Cubre temas como los principios del diseño estructural, las filosofías de diseño como el diseño por tensiones admisibles y el diseño por factores de carga y resistencia, los tipos de cargas a considerar y las combinaciones de cargas, y los métodos de análisis estructural como el método elástico y el método plástico.
Este documento presenta el proyecto arquitectónico para el Complejo Deportivo Municipal de Jocoro, El Salvador. Se realiza una introducción describiendo la importancia de las instalaciones deportivas y recreativas. Luego, se explica el problema de falta de estas instalaciones adecuadas en Jocoro. El objetivo general es elaborar el proyecto arquitectónico para el complejo, ubicado en un terreno de 3.7 manzanas. Finalmente, se detallan los capítulos que componen el documento, incluyendo el marco de referencia,
Sistemas y metodos constructivos 2 sistemas constructivosAnl Dz
Un sistema constructivo es el conjunto de elementos y unidades de un edificio que, ejecutadas con una técnica adecuada, forman una organización funcional con el fin de dar confort. Los sistemas constructivos han evolucionado del uso de estructuras murarias a estructuras reticulares de hormigón y acero, y de sistemas pasivos a sistemas de acondicionamiento electromecánicos. Existen varios tipos de sistemas como la construcción tradicional, el sistema de entramado de acero, el sistema de entramado de madera y los sistem
Este documento describe el cálculo y diseño estructural para la cubierta del mercado central de Píntag usando una tensoestructura de bambú gigante. Incluye definiciones de tensoestructuras, cables de acero, membranas y bambú gigante, así como consideraciones de diseño, ventajas y un análisis estructural. El objetivo es proveer una cubierta ligera y económica usando materiales locales como el bambú.
Este documento presenta un manual de diseño estructural para el Sistema Constructivo Panel Rey. Explica que el sistema se basa en una estructura de perfiles de acero galvanizado con paneles de yeso adheridos. Incluye tablas con las propiedades y capacidades de los diferentes componentes para la selección estructural, así como detalles de diseño y normas de construcción. El propósito del manual es guiar a los profesionales en el cálculo y diseño estructural utilizando los componentes más adecuados y económicos de acuer
Encofrados para forjados en edificación, dimensionado y puesta en obraPascal Martí Ahlmann
1. Se describen los tipos de encofrados más utilizados en edificación, el de mecano (EM) y el de cabezal de caída (ECC), y sus características. 2. Se explican las acciones a considerar en el dimensionado del encofrado, distinguiendo entre la fase de hormigonado y la de apuntalamiento/apeo. 3. Se resume el método simplificado de Grundy y Kabaila para el cálculo de las cargas durante el apuntalamiento y se propone un reparto actualizado de cargas para cada sistema de en
Este documento presenta la revisión de 2006 de la Norma Venezolana 1753 sobre el proyecto y construcción de obras de concreto estructural. La norma sustituye totalmente la versión de 1987 y fue revisada por el Comité Técnico de Normalización CT3 Obras Civiles y el Subcomité Técnico SC1 Edificaciones de FONDONORMA. La norma contiene especificaciones para materiales, diseño, análisis, requisitos constructivos y de durabilidad para estructuras de concreto.
Este documento presenta una serie de detalles constructivos referentes a la construcción de edificios de cuatro niveles. El documento incluye 14 detalles de fundaciones, zapatas y columnas, así como detalles estructurales y de cerramiento. El objetivo es proporcionar ejemplos básicos que permitan orientar a los estudiantes sobre los estudios necesarios para la construcción de edificios.
Este documento describe diferentes tipos de placas estructurales. Las placas de asiento se usan para transmitir cargas de columnas o vigas a los cimientos. Las placas de base distribuyen la carga de las columnas de acero en un área más grande del cimiento para evitar sobrecargas. Las placas de base se pueden soldar directamente a las columnas o conectar con ángulos. Es crítico posicionar correctamente las placas de base durante el montaje para evitar cambios de esfuerzo en la estructura.
Walter Gropius fue un arquitecto, urbanista y diseñador alemán nacido en 1883 que fundó la escuela Bauhaus. Dirigió la Bauhaus entre 1919 y 1928, donde fusionó las artes y oficios con la arquitectura para crear la primera escuela de diseño del mundo. Más tarde emigró a Estados Unidos debido a la persecución nazi y se convirtió en profesor en Harvard. Algunas de sus obras más importantes incluyen la Fábrica Fagus de 1911-1913 y los edificios de la escuela Bauhaus en
Este documento trata sobre el análisis estructural de un proyecto de construcción. Describe conceptos como cargas muertas, cargas vivas, cargas de viento, combinaciones de cargas, y diafragmas. Explica cómo calcular y distribuir diferentes tipos de cargas que actuarán sobre la estructura propuesta.
Este documento describe el sistema constructivo Drywall. Se explica que el Drywall consiste en una estructura de perfiles metálicos o de madera sobre la cual se colocan placas de yeso u otro material. Luego se detalla la evolución histórica del Drywall, desde su creación en 1916 hasta su llegada al Perú en los años 80. Finalmente, se mencionan algunas de las ventajas del sistema Drywall como su rapidez de instalación y bajo costo en comparación a otros métodos constructivos.
El documento describe el predimensionamiento de placas para un edificio estructurado con muros de corte según la norma E.030. Se utiliza una fórmula para calcular el 80% de la fuerza cortante basal requerida y se proveen datos como las áreas techadas de cada nivel y el peso total de la edificación para realizar los cálculos correspondientes.
Zamil Air Conditioners India Pvt. Ltd. is a leading HVAC solutions provider with a diverse portfolio including air conditioning, concrete, energy, insulation, solar, and steel sectors. It has manufacturing facilities in India, Saudi Arabia, Italy, and Austria. Some of its strengths are pioneering district cooling projects, a multi-product portfolio, and world-class brands. It provides commercial and industrial HVAC solutions including chillers, air handling units, and turnkey projects. It has completed many prestigious projects for clients in various industries.
utocool was established in 1979 with 24 employees and started as a small family business importing automotive products and gradually evolved into developing and manufacturing high standard automotive air conditioners (A/Cs). Autocool now is a leading manufacturer in the region with over 250 employees.
Due to its agile manufacturing capabilities, Autocool is proud to offer the capacity of “tailor making”
products to any specific requirements and accommodate orders with no minimum quantities.
Autocool established its OE Division in 1993 producing the following:
• Refrigerant lines & hoses
• Cooling modules, condensers & radiators
• HVAC
Arte y arquitectura del siglo xx en mexjcoAoi Shinigami
Este documento describe el desarrollo de la cultura nacionalista en México después de la Revolución de 1910. Se exploran tres estilos arquitectónicos (neocolonial, neoindigenista y art decó) que intentaron establecer una identidad cultural mexicana distintiva, rechazando las influencias del porfiriato. El muralismo también jugó un papel importante en la promoción de los ideales de la Revolución a través de obras que representaban la historia y cultura de México.
Este documento presenta el catálogo de gradas prefabricadas para instalaciones deportivas de la compañía Norten PH. Describe las diferentes series de gradas, peldaños, placas de remate y detalles de montaje, incluyendo dimensiones, pesos y usos recomendados. También menciona referencias de obras realizadas con este sistema de gradas prefabricadas como campos de fútbol, plazas de toros y otros recintos deportivos.
El documento describe diferentes sistemas estructurales de concreto, acero y madera. Explica que los miembros de concreto están constituidos por hormigón y acero de refuerzo que trabajan juntos para resistir compresión y tracción. También resume las ventajas y desventajas de sistemas aporticados, de muros portantes, tridimensionales de cerchas y de madera.
El documento presenta los planos de un proyecto de construcción de un estacionamiento. Incluye detalles sobre las dimensiones y materiales de los cimientos, losas, vigas, columnas y muros de contención. Asimismo, proporciona información sobre el propietario, superficies, director de obra y responsables del proyecto.
Este documento presenta una introducción a los entrepisos planos de hormigón estructural. Describe tres tipos básicos de entrepisos: 1) entrepisos sin vigas, 2) losas armadas en una dirección, y 3) losas armadas en dos direcciones. Explica brevemente cada tipo y cómo se indican en planos, incluyendo detalles sobre la nomenclatura y armaduras utilizadas. El documento proporciona información general sobre consideraciones de diseño para entrepisos de hormigón.
Este documento presenta una introducción a los métodos de diseño estructural. Cubre temas como los principios del diseño estructural, las filosofías de diseño como el diseño por tensiones admisibles y el diseño por factores de carga y resistencia, los tipos de cargas a considerar y las combinaciones de cargas, y los métodos de análisis estructural como el método elástico y el método plástico.
Este documento presenta el proyecto arquitectónico para el Complejo Deportivo Municipal de Jocoro, El Salvador. Se realiza una introducción describiendo la importancia de las instalaciones deportivas y recreativas. Luego, se explica el problema de falta de estas instalaciones adecuadas en Jocoro. El objetivo general es elaborar el proyecto arquitectónico para el complejo, ubicado en un terreno de 3.7 manzanas. Finalmente, se detallan los capítulos que componen el documento, incluyendo el marco de referencia,
Sistemas y metodos constructivos 2 sistemas constructivosAnl Dz
Un sistema constructivo es el conjunto de elementos y unidades de un edificio que, ejecutadas con una técnica adecuada, forman una organización funcional con el fin de dar confort. Los sistemas constructivos han evolucionado del uso de estructuras murarias a estructuras reticulares de hormigón y acero, y de sistemas pasivos a sistemas de acondicionamiento electromecánicos. Existen varios tipos de sistemas como la construcción tradicional, el sistema de entramado de acero, el sistema de entramado de madera y los sistem
Este documento describe el cálculo y diseño estructural para la cubierta del mercado central de Píntag usando una tensoestructura de bambú gigante. Incluye definiciones de tensoestructuras, cables de acero, membranas y bambú gigante, así como consideraciones de diseño, ventajas y un análisis estructural. El objetivo es proveer una cubierta ligera y económica usando materiales locales como el bambú.
Este documento presenta un manual de diseño estructural para el Sistema Constructivo Panel Rey. Explica que el sistema se basa en una estructura de perfiles de acero galvanizado con paneles de yeso adheridos. Incluye tablas con las propiedades y capacidades de los diferentes componentes para la selección estructural, así como detalles de diseño y normas de construcción. El propósito del manual es guiar a los profesionales en el cálculo y diseño estructural utilizando los componentes más adecuados y económicos de acuer
Encofrados para forjados en edificación, dimensionado y puesta en obraPascal Martí Ahlmann
1. Se describen los tipos de encofrados más utilizados en edificación, el de mecano (EM) y el de cabezal de caída (ECC), y sus características. 2. Se explican las acciones a considerar en el dimensionado del encofrado, distinguiendo entre la fase de hormigonado y la de apuntalamiento/apeo. 3. Se resume el método simplificado de Grundy y Kabaila para el cálculo de las cargas durante el apuntalamiento y se propone un reparto actualizado de cargas para cada sistema de en
Este documento presenta la revisión de 2006 de la Norma Venezolana 1753 sobre el proyecto y construcción de obras de concreto estructural. La norma sustituye totalmente la versión de 1987 y fue revisada por el Comité Técnico de Normalización CT3 Obras Civiles y el Subcomité Técnico SC1 Edificaciones de FONDONORMA. La norma contiene especificaciones para materiales, diseño, análisis, requisitos constructivos y de durabilidad para estructuras de concreto.
Este documento presenta una serie de detalles constructivos referentes a la construcción de edificios de cuatro niveles. El documento incluye 14 detalles de fundaciones, zapatas y columnas, así como detalles estructurales y de cerramiento. El objetivo es proporcionar ejemplos básicos que permitan orientar a los estudiantes sobre los estudios necesarios para la construcción de edificios.
Este documento describe diferentes tipos de placas estructurales. Las placas de asiento se usan para transmitir cargas de columnas o vigas a los cimientos. Las placas de base distribuyen la carga de las columnas de acero en un área más grande del cimiento para evitar sobrecargas. Las placas de base se pueden soldar directamente a las columnas o conectar con ángulos. Es crítico posicionar correctamente las placas de base durante el montaje para evitar cambios de esfuerzo en la estructura.
Walter Gropius fue un arquitecto, urbanista y diseñador alemán nacido en 1883 que fundó la escuela Bauhaus. Dirigió la Bauhaus entre 1919 y 1928, donde fusionó las artes y oficios con la arquitectura para crear la primera escuela de diseño del mundo. Más tarde emigró a Estados Unidos debido a la persecución nazi y se convirtió en profesor en Harvard. Algunas de sus obras más importantes incluyen la Fábrica Fagus de 1911-1913 y los edificios de la escuela Bauhaus en
Este documento trata sobre el análisis estructural de un proyecto de construcción. Describe conceptos como cargas muertas, cargas vivas, cargas de viento, combinaciones de cargas, y diafragmas. Explica cómo calcular y distribuir diferentes tipos de cargas que actuarán sobre la estructura propuesta.
Este documento describe el sistema constructivo Drywall. Se explica que el Drywall consiste en una estructura de perfiles metálicos o de madera sobre la cual se colocan placas de yeso u otro material. Luego se detalla la evolución histórica del Drywall, desde su creación en 1916 hasta su llegada al Perú en los años 80. Finalmente, se mencionan algunas de las ventajas del sistema Drywall como su rapidez de instalación y bajo costo en comparación a otros métodos constructivos.
El documento describe el predimensionamiento de placas para un edificio estructurado con muros de corte según la norma E.030. Se utiliza una fórmula para calcular el 80% de la fuerza cortante basal requerida y se proveen datos como las áreas techadas de cada nivel y el peso total de la edificación para realizar los cálculos correspondientes.
Zamil Air Conditioners India Pvt. Ltd. is a leading HVAC solutions provider with a diverse portfolio including air conditioning, concrete, energy, insulation, solar, and steel sectors. It has manufacturing facilities in India, Saudi Arabia, Italy, and Austria. Some of its strengths are pioneering district cooling projects, a multi-product portfolio, and world-class brands. It provides commercial and industrial HVAC solutions including chillers, air handling units, and turnkey projects. It has completed many prestigious projects for clients in various industries.
utocool was established in 1979 with 24 employees and started as a small family business importing automotive products and gradually evolved into developing and manufacturing high standard automotive air conditioners (A/Cs). Autocool now is a leading manufacturer in the region with over 250 employees.
Due to its agile manufacturing capabilities, Autocool is proud to offer the capacity of “tailor making”
products to any specific requirements and accommodate orders with no minimum quantities.
Autocool established its OE Division in 1993 producing the following:
• Refrigerant lines & hoses
• Cooling modules, condensers & radiators
• HVAC
Autocool is an Egyptian-owned company with two plants located 45 km from Cairo that manufactures automotive air conditioners and refrigeration units. It has received several quality certifications and exports its products to several European and Middle Eastern countries. Autocool produces heat exchangers and air conditioning systems for buses, trucks, and original equipment manufacturers. It also operates service centers in Cairo that install and repair automotive air conditioners.
Symphony is one of the leading air cooling brands of this modern world. The company has been doing business since 1939 and since then it has been offering some excellent Air Coolers for commercial, industrial, and residential usage. With the passing course of time, they introduce products that are not only efficient but highly user-friendly and extremely affordable. You can choose the best air cooler from their wide range for your home and office. Nonetheless, there are some vital factors that you should know at the time of purchasing a new air cooler for your home.
Industrial air coolers are meant cooling for large open and semi-open spaces. They work on the principle of evaporative air cooling, wherein fresh air is supplied continuously through air ducts and air supply outlets and cooled through cooling pads and water. With the continuous supply of cool air, the hot air containing impurity, odour and dust gets emitted out of the room, resulting in a cool, ventilated, clean and comfortable environment.
For open and semi-open spaces in industries and commercial premises, air cooling is an efficient and the only practical solution. Air cooling improves the quality of air, saves on electricity and ensures powerful cooling at low operating cost.
For Industrial Air Coolers visit at - https://www.symphonylimited.com/industrial-air-coolers
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PROGEN General Trading LLC is an engineering trading company based in the UAE that deals in HVAC equipment, lighting, generators, and building management systems. It aims to be a reliable partner for clients by providing quality products and services. The company's staff have experience in the UAE market and management strives for innovation.
This document discusses improving rolling plant performance through expertise and process modeling. It describes Innoval Technology, which provides aluminum rolling expertise, and its acquisition by Danieli. Process models are highlighted as valuable tools for optimizing rolling given their ability to study "hidden" parameters. Examples of models for ingot heating, roll gaps, roll cooling, and coil heating/cooling are provided. The presentation also stresses developing employee expertise and designing new plants for maximum returns.
1. Emek Group is a Turkish manufacturing company established in 1942 that produces products for the telecommunications, energy, and automotive industries.
2. They have production facilities in Istanbul and produce telecommunication towers, manifolds for gas turbines that meet international standards, and chassis and components for vehicles and trailers.
3. Emek Group aims to ensure high quality and customer satisfaction throughout the project process from start to finish, and has implemented an ISO 9001 quality management system.
Comfort Air Systems Fze is an HVAC specialist company that provides design, build, consultancy, and modernization services for HVAC projects. The company was established in 2002 and serves clients in the Middle East, India, and Afghanistan. In addition to standard HVAC systems, the company also undertakes specialized projects involving energy recovery, clean rooms, CFD analysis, acoustics, industrial ventilation, and dust collection systems. The document provides details on the various services offered and gives examples of past project experience.
Seifert Systems - 50 years of Thermal ManagementIngo Sausmekat
Seifert Systems is a global supplier of thermal management products that began 50 years ago in Germany. It has since expanded to multiple subsidiaries worldwide. The company aims to be a leading provider of thermal management for control cabinets through new product development, production expertise, and service. Seifert offers a wide range of cooling products for industrial applications, including cabinet cooling units, heat exchangers, and accessories. It has established itself as a reliable partner for thermal management over its 50 year history.
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Pth series (1)
1.
2. Company Business
Zamil Air Conditioners (ZAC), a sector business of Zamil Industrial, is the largest supplier of air conditioners in the Middle East. It manufactures
and markets a whole range of air conditioners from room air conditioners to packaged units to large capacity chillers for residential, commercial
and industrial applications. Zamil Air Conditioners was founded in 1974 as one of the first air conditioning companies to be established in Saudi
Arabia and today is a leading international manufacturer of air conditioning systems & service solutions and is Number One in the Middle East.
ZAC’s operations are structured into four companies supporting seven in-house brands and twelve products and service units as well as a
number of international brands under the OEM Sales. The seven in-house brands are Zamil Air Conditioners, Classic, Zamil, Cooline, CoolCare,
Climatech and Geoclima.
The four companies are:
1. Zamil Air Conditioners & Home Appliances Co. (L.L.C.), supporting Zamil, Classic, Cooline, GE and OEM brands for consumers.
2. Zamil Central Air Conditioners Co. (L.L.C.), supporting Zamil Air Conditioners, Cooline and Climatech for commercial and industrial customers.
3. Zamil Air Conditioning and Refrigeration Services Co. (L.L.C.), providing electromechanical engineering, construction and project management
services, HVAC Operation & Maintenance, Retrofit Services, Spare Parts, Fire Protection, Controls, Electrical Services, Coils, Ducting and Coating.
4. Geoclima srl is an independent business supporting other three companies for their requirements of Chillers and Double Skin AHU’s.
The first three Companies- direct their business operations from the First and Second Industrial Cities in Dammam, Saudi Arabia and have a
product design center in Austria.
GEOCLIMA has its engineering and production departments located at Monfalcone, Italy.
All the four companies, while operating independently, supplement each other’s activities in a way that makes synergy work at its best and
achieves ZAC’s goals of maximizing customer value and satisfaction.
OEM Sales - Private Labeling
Zamil Air Conditioners produces branded air conditioners under OEM agreements for several leading international brands. Such relationships are
testimony to the excellence of ZAC’s engineering and production processes. Most of the units produced under the private labeling agreements
are for window and mini-split systems. However, ZAC is expanding its OEM offerings to include residential and light commercial units. Some of
the OEM brands manufactured at Zamil Air Conditioners are: Supra, Sanyo and Blue Star.
Joint Venture
Middle East Air Conditioners - Joint Venture with General Electric.
Zamil Air Conditioners partners with GE Appliances - Europe since 1997, in a joint venture called Middle East Air Conditioners (MEAC), for
manufacturing and marketing of GE branded air conditioners.
MEAC was awarded the license to manufacture Window, Mini Splits and Ducted Split types under the brand names GE, Hotpoint and RCA. Today,
MEAC enjoys extensive coverage in Saudi Arabia, GCC and the African market. In an ever-changing market, MEAC continually strives to acquire
new technologies and stylish integrated design with optimum performance and reliability that bring greater value to customers.
Factories and Production
Zamil Air Conditioners has two prime manufacturing plants in Dammam, Saudi Arabia and a production facility in Italy operated by GEOCLIMA and
a product design center in Austria. ZAC can produce up to 900,000 room air conditioners, 300,000 mini-split systems and 65,000 central air-
conditioning systems per annum and supplies air conditioning products to over 55 countries across the world - the major markets being GCC,
Middle East, North Africa, Europe and Asia.
Quality & Product Certificates
The Quality systems and policies at Zamil Air Conditioners comply with the required ISO 9001:2008 certification.
ZAC’s products are certified with:
1. CE (Council of European Community).
2. UL (Underwriters Laboratory).
3. Eurovent (Certified Performance).
4. ISO 9001-2008 (International Organization for Standardization).
5. AHRI (Air-Conditioning, Heating and Refrigeration Institute).
Other awards include the prestigious Engineering Excellence Award of General Electric and the inaugural Prince Mohammed bin Fahd Al Saud
Award for Factory Safety.
Our Products & Service Units
In addition to consumer products such as the Room Air Conditioners (RAC) and the Mini Splits, Zamil Air Conditioners manufactures a host of
residential, commercial and industrial air conditioners. This broad product range extends from the concealed units up to 5 TR, the ducted splits
up to 30 TR, the packaged units up to 95 TR, the single and double skin air handling units up to 138,316 CFM, the water chillers up to 500 TR and
the centrifugal chillers up to 5,000 TR cooling capacity.
Our products and services include, in addition to Maintenance, Retrofit & Operations (MRO), complete integrate suite of solutions like:
• Zamil Projects: Providing EPC for electromechanical works for Industrial, Utility and Oil & Gas customers.
• Zamil Controls: Design, assembly, integration and commissioning of low current & low voltage systems.
• Zamil Fire Protection: Design, integration and commissioning of active fire protection systems.
• Zamil Electrical: Design, integration and commissioning of lv/mv (low voltage/middle voltage) systems.
• Coil & Coating: Coil replacement, anti-corrosion coating, water proofing & reflective coating and passive fire protection solutions.
• Zamil Ducting: Facilities designs and manufactures high quality duct systems and other HVAC industry related products, utilizing state of the
art automated duct lines, Plasma Cutting, CNC Turret punch press and other specific machinery through two duct factories located in Saudi
Arabia western province (Yanbu) and Eastern province (Dammam).
3. Contents Page
Model decoding ......................................................................................................................................... 2
Introduction ............................................................................................................................................ 3-6
Standard specifications ........................................................................................................................ 7-16
Optional items.....................................................................................................................................17-18
Standard features/options/accessories ................................................................................................... 19
Physical data ......................................................................................................................................20-21
Selection procedure ................................................................................................................................ 22
Cooling capacities ...............................................................................................................................23-27
Electrical data .....................................................................................................................................28-35
Fan performance data .........................................................................................................................36-50
Blower motors ......................................................................................................................................... 51
Static pressure drop ................................................................................................................................ 52
Filter dimensions..................................................................................................................................... 53
Unit dimensions ..................................................................................................................................54-60
Optional sections, dimensions ............................................................................................................61-70
Rain hood assembly................................................................................................................................ 71
Typical schematic wiring diagram .......................................................................................................72-75
Rigging instructions................................................................................................................................. 76
Installation clearance ..........................................................................................................................77-78
Load distribution & mounting location ............................................................................................79-84
INDEX
CONTINUING RESEARCH RESULTS IN STEADY IMPROVEMENTS.
THEREFORE, THESE SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
1
5. INTRODUCTION
The PTH Series air cooled modular packaged units from Zamil Air Conditioners are produced in an ISO 9001:2008
certified facility. They are designed to provide engineering excellence on comfort air conditioning and industrial cooling
with a superior combination of high energy efficiency & energy saving, high performance, application flexibility, ease of
service & maintenance and the ability to withstand extreme ambient temperatures found in the climate of the Gulf region.
The PTH series are self-contained modular packaged units with a design that consists of scroll compressor(s), cooling
coil, condenser coil, fans, control wiring and inter connecting piping. These units are shipped in single packaged, fully
charged with R-410A refrigerant, and are suitable for mounting on the roof or ground with easy installation and excellent
serviceability. The unit features an integral weather resistant control panel, ready for field connection to utilities and ducts.
The PTH series units are designed to use ozone friendly HFC R-410A refrigerant. HFC R-410A is highly efficient thermo-
dynamic proprieties, created to serve as one of the key substitutes for HCFC based refrigerants. R-410A is environmen-
tally safer for long term use, no chlorine and does not contribute to Ozone depletion. There is no phasing out and no
replacement costs for the life of the equipment.
PTH006
3
6. R-410A CHARACTERISTICS
* Ozone friendly- HFC compound, No Chlorine & have zero ODP.
* R-410A has a significantly higher heat transfer coefficient than R-22.
* R-410A has higher density than R-22.
* Higher Pressure Range, 50% to 70% higher than R-22.
* It’s a Blended Refrigerant (50% R-32 and 50% R-125).
* This blend is a Near-Azeotrope thus it acts very much like a single compound refrigerant.
* No Fractionation problems.
* Temperature glide less than 0.2°F over it’s operating range.
* Critical temperature is 161°F.
* Critical pressure is 700 Psig.
* R-410A utilizes Polyol Ester (POE) based oils.
* R-410A cylinders are rose colored.
* Environmentally safer for long term usage.
* No phase out & no replacement cost.
* Low toxicity & non-flammable.
* Compatible with steel, copper, aluminum and brass.
4
7. FEATURESAND BENEFITS
* DX cooling capacity from 6.4 ton up to 58.3 ton.
* All units are tested & certified in accordance with AHRI & 340/360 standards.
* Complete packaged unit tested & certified in accordance with UL1995 standard (UL file # SA 13167).
* Independent refrigeration circuits with scroll compressors for efficient cooling process.
* EER up to 11.4 and IEER up to 13.
* R-410A environmentally-friendly refrigerant (HFC refrigerant).
* Unit’s cooling operating up to 125o
F ambient temperature.
* Thermal expansion valve and filter drier kit.
* Copper tubes and aluminum fins coils.
* All condenser coils are protected with Anti-corrosive coating (Resistec) as standard.
* Compact unit design with smaller unit footprint at lower installation cost.
* Front supply and front return air arrangement.
* Double painted wall evaporator section with 2" fiber glass insulation.
* Access panels with easy opened 'C' clamp and no screw features in all access panels.
* 2" (50 mm) thick pleated pre-filter EU4 ( MERV7) applicable to all models.
* Available in horizontal and vertical duct configuration.
* Belt driven blower fan motor with adjustable motor pulley applicable for all models.
* Rigging holes in base rail for easy lifting & Installation.
* High pressure switch and low pressure switch protection.
* Single power point connection to reduce filed wiring cost.
* Easy access to all components for excellent serviceability.
* Integral sub-cooling circuit provided to increase overall unit efficiency.
* High efficient (IE3) permanently lubricated (TEFC) blower motor.
* High efficient permanently lubricated Condenser fan motors (TEAO) with class 'F' insulation.
* Smart microprocessor controller with 220V control voltage protected with control fuse.
* Quality assurance according to ISO 9001:2000, Which guarantees high and constant product quality.
AHRI COOLING RATING TABLE
MODEL No. AIR FLOW (CFM) EER IEER
PTH006 1 74 6.47 2500 11.44 12.68
PTH007 2 86 7.68 2700 11.2 12.74
PTH008 2 100 8.77 3400 11.4 13.48
PTH010 2 121 10.65 4100 11.36 12.89
PTH012 2 150 13.48 4900 11.13 12.8
PTH015 2 172 15.64 5200 11 13.3
PTH017 2 198 18.00 6300 11 12.68
PTH022 2 274 25.78 8500 10.63 10.64
PTH025 2 296 29.28 9500 10.11 11.4
PTH030 2 334 33.17 10600 10.07 11.17
PTH035 2 390 38.77 11700 10.06 10.7
PTH040 4 460 45.63 13000 10.08 10.68
PTH045 4 530 52.22 14600 10.15 10.58
PTH050 4 590 57.28 16600 10.3 11.1
PTH060 4 660 66.00 17700 10 10.7
TOTAL POWER
INPUT (KW)
COOLING
STAGES
NET CAPCITY
(MBH)
LEGEND:
AHRI:Air Conditioning, Heating & Refrigeration Institute
EER :Energy Efficiency Ratio
IEER :Integrated Energy Efficiency Ratio
NOTE:1. Rated in accordance with AHRI 340/360 Standards.
2. Ratings are based on Cooling Standard: 80o
F db, 67o
F wb indoor air temp. and
95o
F db outdoor air temp.
3. Blower motor power rating is based on 2" thick pleated filter, wet evaporator coil
& drive losses.
5
8. Scroll compressor
Scroll compressor involutes
6
SCROLL COMPRESSOR
The scroll compressors are consists of two involutes or Archimedean spirals. One spiral is positioned inside the other to
form a series of crescent-shaped pockets. During compression the upper spiral remains stationary and the lower one, being
eccentrically mounted on the drive shaft, describes an orbital rather than a simple rotary motion.
Compressor working principle
1. Compression in the scroll is created by the interaction of an orbiting spiral and a stationary spiral. A refrigerant enters
the outer openings as one of the spirals orbits.
2. The open passages are sealed off as gas is drawn into the spiral.
3. As the spiral continues to orbit, the gas is compressed into two increasingly smaller pockets.
4. By the time the gas arrives at the center port, discharge pressure has been reached.
5. During operation, all six gas passages are in various stages of compression at all times, resulting in nearly continuous
suction and discharge.
Refrigerant enters the compressor at the suction connection and flows around the motor’s housing and enters at the
bottom side through the openings and oil droplets separate from the refrigerant and fall into the oil sump. All suction
refrigerant passes through the electrical motor, ensuring full motor cooling, after that the refrigerant enters the scroll
elements.
Pockets arrangement
(1) (2) (3)
(4) (5)
9. STANDARD SPECIFICATIONS
A. UNIT CONSTRUCTION
BASE: The base rail is constructed of heavy gauge galvanized steel with lifting holes for ease in rigging and lifting. It also
includes mounting holes suitable to affix with neoprene pads or spring isolators.
CABINET: The unit cabinet is a modular construction design with a base frame and panels made of heavy gauge galva-
nized steel. All panels, top and bottom base pan, vertical posts, cross channels and supporting brackets are joined together
and bolted. The steel sheet panels are zinc-coated and galvanized by the hot dip process of lock-forming quality conform-
ing to ASTM A 653 commercial weight G-90, followed by a baked on electrostatic polyester dry powder coat (RAL9002)
color, capable of withstanding 1500 hours of salt spray test in accordance with ASTM B-117.
B. COMPRESSOR
All compressors used in the PTH series are hermetically scroll design type with a high energy efficiency ratio, low noise and
quite operation. All compressors conform to AHRI 540 standard and are equipped with internal motor protection, factory
installed crankcase heaters and rubber vibration isolators for quiet and efficient operation. Standard equipment includes a
single compressor for PTH006, dual compressors for PTH007 - 035 & quadruple compressors for PTH040 - 060. Each
compressor has lock-out devices to protect it from short cycling when tripped by safety controls. Each compressor has a
separate condenser coil with its own safety controls. Sight glass, filter drier and under voltage monitor are standard on all
models.
C. AIR HANDLING SECTION
OVERVIEW: The air handling section is made to meet the compact design requirements as seen in Figure below. This
section contains the evaporator coil, drip eliminator (optional), blower fan and motor, electric heater (optional) and 2"
(50mm) pleated filter rack.
Air Handling Section
7
AIR HANDLING COMPARTMENT: The air handling section is provided with 2" (50mm) thick 3 Ibs/ft3 (48 Kg/m3) density
fiberglass insulation with double painted wall construction as standard. This will prevent condensation from forming on the
casing. Insulation meets the requirements of NFPA 90A regulations for smoke and flame spread ratings and is protected
against deterioration and erosion from air currents. All access panels, fixed panels, top and bottom panels are made of 18
gauge steel while the Inner walls are made of 20 gauge steel, fastened and sealed with a rubber gasket to prevent air and
water leakage.
All access panels are fixed with 'C' clamp and free of screws, creates flexibility and simple method of removing and re-
installation the access panels during maintenance.
10. PRE FILTER RACK: Filters can be easily accessed through the filter access rack. 2" (50mm) pleated filters (EU4/MERV7)
are standard for all models. Also, as an option, 2" (50mm) aluminum filters (EU2/ MERV 4) can be provided.
As an option, Zamil can offer the following:
1. 2" pleated filter (EU5 /MERV8)
2. 4" Mini pleated filter (EU9/MERV15)
8
EVAPORATOR COIL: The evaporator coil is fin and tube type, constructed of seamless copper tube mechanically bonded
to enhanced aluminum fins for maximum heat transfer efficiency. The fins have full self spacing collars, which completely
cover each tube while the staggered tube design improves the thermal efficiency. Each coil equipped with a properly sized
thermostatic (TXV) expansion valve and distributor to ensure that equal refrigerant is fed to all circuits as well as seamless
copper headers. The number of circuits is chosen to provide optimum heat transfer and reasonable refrigerant velocity and
pressure drop. End plates and tube support sheets are made of 18 gauge galvanized steel, formed to provide structural
strength. Each evaporator coil is pressure tested in the factory at 450 psig air pressure respectively which conforms to
AHRI 410. As options, Zamil Air conditioners can offer:
1. Copper Fins
2. Pre-coated Aluminum Fins
3. ResisTec Coating for Aluminum or Copper fins
Evaporator Coil
DRAIN PAN: One of the primary functions of an air conditioning system is to remove water from the air it circulates,
therefore in order to remove the condensed water formed during de-humidification, a drain pan should be provided under
the evaporator (cooling) coil. The drain pan is mounted under evaporator coil on a positive sloped with single side
coupling connection to eliminate standing water and minimize bacteria growth. It’s fabricated from G-90 galvanized steel,
powder coated and the outer surface is insulated with 1/8'' closed cell insulation to prevent condensation. For additional
corrosion protection. As an option, a stainless steel drain pan can be provided.
Pleated Filter Aluminum Filter
11. SUPPLYAIR FAN (BLOWER)
• Double inlet, double width (DWDI) centrifugal fan.
• Forward fan with high quality and optimum selection.
• Backward fan is applicable to all models.
• 'T' frame design is standard for all models.
• All fan assemblies are statically and dynamically balanced and every unit is vibration tested before shipment from factory.
• Solidsteelfanshaftsrotatein(200,000houraveragelifeatdesignoperatingconditions)re-greasablepillowblockballbearings.
• Fan drive by adjustable pitch pulleys and V-belt drive are standard.
• All fan and motor assemblies are isolated from the main unit on 1" deflection rubber isolator mounts while 1" deflection
spring isolators on PTH040 - PTH60 units.
• Blower motor is mounted on an adjustable base and secured by a locking device. Alignment and tensioning can be done
in the field without moving the motor from the base frame.
9
Blower Compartment
BLOWER MOTOR: Fan motors are of the Totally Enclosed Fan Cooled (TEFC) type, 2 poles or 4 poles with class "B"
temperature rise for class "F" insulation at 50o
C ambient temperature and continuous duty. All motors shall be premium
efficiency (IE3). The motor’s index of protection is IP55, which protects from dust and water. It is mounted on an adjustable
base for proper alignment and belt tension adjustment. Motors are suitable for use with a variable frequency drive. For
motor sizing, all mechanical losses are considered in relation to the safety factor.
Blower Motor
12. 10
D. AIR COOLED CONDENSING SECTION
• Open design permits unrestricted condenser airflow, access
to compressors, refrigeration components and piping.
• High efficiency scroll compressors are standard.
• Each compressor has a separate condenser coil.
• Each refrigerant circuit is furnished with an accessible sight
glass, filter drier, high pressure switch, low pressure switch
and expansion valve.
• Each compressor has a crankcase heater as standard.
• The compressor motor is provided with built-in thermal pro-
tection during winding and an external overload relay for over-
load protection.
• Vertical air discharge minimizes condenser fan noise. Three
phase condenser fan motors eliminate reverse rotation fail-
ures.
Condenser Section
CONDENSERFAN
Condenser fans are constructed of die cast aluminum blades/
hubs with direct driven motors. All fans are statically and dynami-
cally balanced to operate at minimum noise and vibration. Fan
blades are designed with appropriate pitch angle which result in
maximum airflow through the condenser coil. Condenser fan, the
impeller and motor are constructed to form one integral unit. All
fan motors are equipped with IP54 ingress protection, three phase
with class "F" winding insulation and ball bearings for high ambi-
ent application. These fan motors are of the totally enclosed air
over type (TEAO) with inherent thermal protection of the auto-
matic reset type. As options, Zamil Air conditioners can offer:
1. IP55 ingress protection
2. UL recognized condenser fan
3. Fan with protective coating
Condenser Fan
CONDENSER COIL: Condenser coil is of the fin and tube type, constructed of seamless (3/8" OD) inner grooved copper
tube, mechanically bonded to enhanced aluminum fins for maximum heat transfer efficiency. The fins have full self spacing
collars, which completely cover each tube while the staggered tube design improves the thermal efficiency, Each coil is
protected with Anti-corrosive coating (ResisTec ) as standard. The number of circuits is chosen to provide optimum heat
transfer and reasonable refrigerant velocity and pressure drop. End plates and tube support sheets are made of 18 gauge
galvanized steel, formed to provide structural strength. Each condenser coil is pressure tested in the factory at 650 psig air
pressure respectively. As an option, Zamil Air Conditioners can offer:
1. Copper Fins
2. Pre-coated Aluminum Fins
3. ResisTec Coating for Copper fins
CRANKCASE HEATERS: Compressors are equipped with crankcase heater. The compressor crankcase heater is
always on when the compressor is de-energized. This protects the system against refrigerant migration, oil dilution and
potential compressor failure.
FILTER DRIER: Refrigerant circuits are kept free of harmful moisture, sludge, acids and oil contaminating particles by the
filter drier. Cartridge (sealed type) is standard on all models while replaceable core filter drier is optional.
SIGHT GLASS: The moisture indicating sight glass is installed in the liquid line and its color indicator shows moisture
contents and provides a means for checking the system’s refrigerant charge.
13. 11
E. CONTROL PANEL
The standard control panel design is equivalent to NEMA-4 standard with hinged door for easy access. It’s designed to be
weather proof and to prevent accumulation of dust. Internal power and control wiring is neatly routed, properly anchored and all
wires are identified with cable markers as per NEC standard applicable to HVAC units. Major control devices fixed in the control
panel are UL approved and reliable in operation at high ambient conditions for a long period of time.
1. Controller board
2. Control transformer
3. Auxiliary terminal block
4. Condenser fan motor contactors
5. External overload relay for condenser fan motor (optional)
6. Condenser fan motor circuit breaker
7. Control fuse
8. Compressor circuit breaker (optional)
9. High voltage terminal block
10. Non-fused disconnect switch (optional)
11. Earth terminal block
12. Compressor contactor
13. Compressor overload relay
14. Blower motor overload relay
15. Blower motor contactor
16. Voltage monitor relay (UVM)
17. Control relays
18. Blower motor circuit breaker Control Panel
F. ELECTRICAL SPECIFICATIONS
1. UNIT STANDARD FEATURES:
• Zamil advanced controller
• Under voltage monitor (phase failure Relay)
• Ferrules for wires
• Tagging for wires and components
• Warning labels
• PVC cable channels
• Low and high terminal blocks
• Copper ground bus
• Crankcase heater for compressors
• Air flow switch for heaters
• Fixed pressure switches
• 220 V- 1 Ph- 50/60 Hz control voltage
• Internal protection for compressors and condenser fans
• Control fuses
14. 12
2. UNIT OPTIONAL FEATURES:
• Volt free contacts
• Fan cycling switches (head pressure control)
• Compressor circuit breaker
• Discharge temperature sensor
• Pump down solenoid valve
- Hot gas bypass valve
- Anti-freeze protection
- 2 or 4 stage thermostat
• Unit disconnect switch
• Circuit breaker for each condenser fan
• External overload for each condenser fan
• Current transformers
• Service lamp
• Dirty filter indications
• Economizer (free cooling system)
• Electric heaters
3. ADVANCEDCONTROLLERFEATURES:
• Compressor #1 lead, FIFO, LIFO or custom options
• Balance loading of compressors
• Single speed or multi speed indoor fan (signal to VFD)
• Pump down solenoid outputs
• Compressor trip outputs and global alarm
• Error / warning indications
• Compressor high and low pressure protection
• Compressor recycle protection (anti-short cycle timer)
• Low pressure bypass timer
• Built-in free cooling (optional)
• Built-in condenser fan staging control
• Modulating damper’s control
• Remote ON/OFF
• Electronic expansion valve (optional)
• Connection to any digital thermostat
• Connection to DDC
• Connection to BMS system with different communication protocols (optional)
• Advanced programmable thermostat with error indicator (optional)
• Small display (3 digits) with alarm buzzer (optional)
• Advanced display with programmer (optional)
15. 13
4. CONTROL FUNCTIONS:
• Unit On-Off
The unit can be switched On-Off with the following mode:
1. From display or thermostat
2. From digital input
3. From BMS
Unit Start Procedure Unit Stop Procedure
• Clock and time bands
Package unit control is fitted with an internal clock with backup battery that stores the time and date for all the associated
functions. In the Packaged unit control it is possible to manage the time bands using the advanced thermostat.
• Regulation by inputs
Packaged unit control can manage up to 4 digital inputs for cooling request and up to 4 digital inputs for heating request.
Each digital input request one step of capacity in cooling and heating mode.
a. Cooling by input
In case of request of cooling, the digital input decide the number of the compressors to switch ON, but the Packaged
unit control decide which compressors switch ON according to the rotation logic.
b. Heating by input
In case of heating the Packaged unit control works always with LIFO control on the outputs. For example in case of
2 heaters, the first heater will switch ON always as first, then after a pre-defined time the second heater will switched
ON in case of request.
c. Free cooling by input
Function of free-cooling considers outside enthalpy or outside temperature with internal enthalpy or internal tempera-
ture to calculate the opening of the dampers. In case of cooling request by input, if conditions permit, the first step of
regulation is by free cooling.
16. 14
• Temperature control
Packaged unit control can manage temperature probes from analogue input or from thermostat. The unit can works in the
following mode:
a. Cooling: The compressors will follow the set-point.
b. Heating: Only in case the heaters are present, the heaters will follow the set-point.
c. Auto: According to set-point and room temperature, the mode of the unit will change automatically. A delay is settable
to avoid continue automatic change.
• Humidity control (Optional)
Packaged unit control can manage humidity probes from analog input or from advanced thermostat. Packaged unit control
can work to dehumidify the room. PID regulation is used on room humidity to switch ON and OFF compressors. If enable
dehumidification in heating mode function then during heating mode, compressors can start to dehumidify. Otherwise,
compressor can’t start during heating mode.
• Indoor Air Quality control - IAQ (Optional)
Packaged unit control will activate the damper when a higher CO2
density. The damper will open according the maximum
request between CO2
and free cooling.
• Supply fan control mode
Supply fan can be regulated in different ways:
a. Supply fan always ON: The fan will be always ON when the unit is ON and OFF with a delay when unit if off.
b. Differential pressure: Checking the differential pressure transducer, the fan will modulate with a PID control to reach
the set-point when fan speed is set to AUTO mode.
c. Fixed: The service can set a fixed power (33%/66%/100%) for the VFD.
d. If the request from the probes is zero, the supply fan will be switched OFF after a delay. Then the fan starts the sniffer
procedure to check the request from the room.
• Sniffer control (Optional)
In case of probe in the room, the sniffer is not mandatory be-
cause the Packaged unit control knows the request of the ambi-
ent without move the air.
In case of probe in the return duct, the sniffer is mandatory, be-
cause without any air flow the Packaged unit control cannot know
the request from the room.
During the last 5 seconds of sniffer procedure the regulation is
enabled and the unit can start the compressor, then the supply
fan became always ON.
• Exhaust fan Control (Optional)
To avoid a high pressure in the building when free cooling/fresh air function is active. Exhaust fan will be used to balance
the pressure. Exhaust fan will activate when the outside damper opening is higher than opening setting. There are two
cases to active the exhaust fan:
a. Free cooling mode.
b. Air quality is not acceptable.
• Dampers Control (Optional)
In air conditioning systems the free cooling functions is used to cool for free using only a part or all fresh air intakes, when
the temperature and relative humidity conditions allow. Free cooling is thus considered free sources of energy, activated
with priority over cascade control in cooling.
17. • Compressors and rotation
All the following timings, typical of ON-OFF compressors, are managed by Package unit control:
a. Minimum on time
b. Minimum off time
c. Minimum time between consecutive starts
d. Delay between ON different compressors
e. Delay between OFF different compressors (fixed as 10s)
The following rotation type is managed by Package unit control:
a. Rotation by time
b. FIFO rotation
c. LIFO rotation
d. Custom rotation
• Pump-Down (Optional)
Packaged unit control can manage the digital output for the pump-down valve for each compressor. There is a fixed
operating procedure at start-up of the unit: the pump down valve must start settable time before the condenser fan, then the
condenser fan must start settable time before of the compressors, then the compressors can start. It is possible to
configure the pump-down at shut-down. Where the valve will be OFF while compressor is ON to pump down the gas in the
evaporator.
• Condenser fan Control (Optional)
The condenser fan can work with or without the condensing temperature and controlling or not the status of the compressor,
like the table below:
Compressor on
The condenser fan switch ON in case
the compressor is ON and temperature
is higher than set-point
Condenser fan switch OFF (The con-
denser fan can switch ON during high
condensing temperature protection)
Compressor off
Follow compressor
Follow condensing temperature
Condenser fan switch ON Condenser fan switch Off
• Supervisory System (Optional)
Packaged unit control can be connected to various supervisory systems, using several BMS communication protocols.
The various connection protocols are managed using the optional cards like: Carel RS485 or Modbus RS485.
• Frost protection (Optional)
Frost protection alarm stops the compressors while the supply fan continue running to avoid freezing in the cooling coil.
The frost protection management provides set, differential and delay options. There is one frost protection for each circuit.
• High/low pressure alarms
The High or Low pressure alarm is managed by Package unit control with a digital input. The high or Low pressure alarm can
be reset as Semi-Automatic function such that if the number of alarms activated more than 3 times per hour, then the alarm
changes to manual reset. The other compressor will continue running in case it is healthy.
5. THERMOSTAT (OPTIONAL)
a. Digital electronic thermostat
- Single, dual or four stages - Cooling & heating
- Low voltage control - 24VAC
- Room temperature display
- Mode of operation - FAN/COOL/HEAT/AUTO
15
18. - Fan mode - always on or start with compressor
- Heating & cooling set-point is permissible
- Temperature set button - Up for increasing & down for decreasing temperature
- Remote sensing function as an option
b. Zamil advanced thermostat
In addition to the above features, Zamil advanced thermostat has the following extra features:
- Enable or disable schedule operation
- Controlling the fan speed in case of modulating supply fan
- Display the list of active alarms
- Display the unit status
- Time display
- Humidity reading (optional)
16
19. 17
OPTIONAL ITEMS
A. MIXING BOX SECTION
When fresh air and return air mixing is required, mixing box is selected. The mixing box section is constructed of double
wall of heavy gauge galvanized steel with 2" thick (50mm) 3 Ibs/ft3
(48 Kg/m3
) density fiberglass insulation. The front return
air arrangement with fresh air opening is always on the side of the unit and contains a 2" pleated filter with an efficiency
rating of EU4 (MERV7). The mixing box section is fixed on the same unit for all models.
B. BAG FILTER SECTION
The bag filter section is constructed of double wall heavy gauge
galvanized steel with 2" thick (50mm) 3 Ibs/ft3
(48 Kg/m3
) den-
sity fiberglass insulation. This section consists of a 2" pleated
pre-filter and 15" depth bag filter. Per filter media is a pleated
filter with an efficiency rating of EU4 (MERV7), while the bag
filter media is synthetic micro-fiber with high efficiency air clean-
ing capability with an efficiency rating of EU9 (F9) (MERV15).
As an option, the filter pressure gauge (Magnehelic manom-
eter) can be ordered with each filter section to help promote
regular servicing and prevent clogging.
Bag Filter
C. HOT GAS BYPASS CONTROL
Hot gas bypass control can be provided on the lead circuit to permit operation of the system down to 80% of its unloaded
capacity. Under low ambient conditions, it controls temperature by eliminating the need to cycle the compressor on and
off, ensuring narrow temperature swing and lengthening the life span of the compressor.
D. PUMP DOWN SOLENOID VALVE (PDS)
A pump down solenoid valve is installed in the liquid line. When the room thermostat is satisfied, the valve closes and the
compressor continues to run until a substantial portion of the refrigerant has been pumped out from the evaporator coil. The
low pressure switch will cycle off the compressor at a predetermined evaporator pressure.
E. PRESSURE GAUGES
This option is used for monitoring and inspecting the suction and discharge pressure, it is installed on the condensing
section which allows inspection of refrigerant system performance.
F. UNIT GUARD
The guard is mounted on the condensing section only, which protects the condenser coil from physical damage.
G. ELECTRIC HEATERS
Electric heaters are of the resistance open-coil type and conform to the requirements of UL 573 or equivalent. Electrical
characteristics, kW capacities and number of stages are as indicated. Thermal cut-outs, fusible links and airflow switches
are provided to shut-off power to heaters in case of airflow failure.
Electric heater
20. H. MANUAL & MOTORIZED DAMPERS
The best way to control the return air flow with fresh air is by adding dampers on the mixing box section. These dampers are
heavy duty, multi-blade, low leakage and of opposed blade design. The dampers are prepared for either manual or motor-
ized operation (motor can be provided as an option).
Zamil dampers are entirely made of aluminum profiles with reinforced polyamide accessories, the blades of the damper has
airfoil shape and perfectly controlled by gears that are spaced out by special spacers located in the damper frame. Zamil
damper has an excellent anti-corrosion features as it is made of aluminum and polyamide which make it light in weight and
yet extremely strong because of its well-engineered design. The damper’s air tightness is enhanced by special gasket
inserted in both, the blades and the frame itself.
The outdoor air damper is equipped with a rain hood (factory installed) as standard on the side of the unit as seen in Figure
below. The rain hood is constructed from galvanized steel, finished with the same durable paint finish as the main unit and
includes one inch cleanable aluminum filter to drain water away from the entering air stream.
18
I. FAN CYCLE SWITCH HEAD PRESSURE CONTROL (FCS)
The capacity of air-cooled condensers varies with the difference between condensing temperature and condenser entering
air temperature (ambient temperature). It increases as this difference increases. For a given capacity, a drop in the ambient
temperature will lower the condensing temperatures and if the ambient temperature drops below a given limit, head pressure
control is required. Control shall be set for a minimum of 95°F (35°C) saturated refrigerant condensing temperature, or to
suit the specified application.
J. ANTI-CORROSIVE COATING
: A single component of aluminum impregnated coating applied on the fins of heat exchanging coils. The product
has been designed for Middle East climate conditions. A high chemical, abrasion and UV resistance has been proven in
both laboratories and on field environment. The coating can be applied at the Zamil Air Conditioners factory as well as in the
field for maintenance or rejuvenation purposes.
: A two component coating system that withstands the extreme climate conditions. The coating can be
applied to all metal parts of HVAC equipment; the piping, the compressors and grids might require a different pre- treatment
and layer build up. Please check ResisTec product information sheets, the heat exchangers can not be coated using this
type. The coating can be applied at the Zamil Air Conditioners factory as well as in the field for maintenance or rejuvenation
purposes.
: A two pack self levelling coating, to be poured in drain pans and into other HVAC bottoms. The coating
seals all seams and bolt and creates a non-corrosive and hygienic surface that will last for the life time of the equipment.
The coating can be applied at the Zamil Air Conditioners factory as well as in the field for maintenance or rejuvenation
purposes.
Pan
Multi
Manual Dampers
21. STANDARD FEATURES & OPTIONS
DESCRIPTION STANDARD FEATURES OPTION (FACTORY INSTALLED)
Scroll compressors
Compressor crankcase heaters
Compressor circuit breakers
Compressor overload protection
Compressor shut-off valves
Condenser fan - direct drive, propeller type
Condenser fan guard
Condenser motor circuit breakers
Condenser motor external overload
Forward curved blower
Backward curved blower
TEFC - IE3 premium blower motor
Blower motor circuit breaker
Adjustable motor pulley
Aluminum fin evaporator & condenser coils
Pre-coated aluminum fin evaporator & condenser coils
Copper fin evaporator & condenser coils
ResisTec coating for condenser coil
Horizontal supply air direction (for PTH006 & PTH045 only)
Vertical supply air direction (standard for PTH050 & PTH060 only)
Side supply air direction (optional for PTH050 & PTH060 only)
2" double skin construction
2" thick pleated filters (EU4/MERV7)
2" thick aluminum filters (EU2/MERV4)
2" thick pleated filters (EU5/F5/MERV8)
Bag filter section (15" depth) (EU9/F9/MERV15)
Mini pleated filter section (4" depth) (EU9/F9/MERV15)
Mixing box section (2" double skin)
Unit full guard
Drip eliminator
Stainless steel drain pan (SS-304) or (SS-316)
Manual volume dampers
Supply volume damper
Back draft damper
Economizer control with outside air temperature sensor
Economizer control with enthalpy sensor
Economizer control with outside air temperature sensor & CO2
monitor
Economizer control with enthalpy sensor & CO2
monitor
Digital thermostat (2 stage) for PTH006 - PTH035
Digital thermostat (4 stage) for PTH045 - PTH060
Controller panel mounting display (PGD1)
Advanced room thermostat with temperature sensor only
Advanced room thermostat with temperature sensor and humidity sensor
Connection card for BMS systems
Anti-ice sensor
Sight glass (moisture indicator)
Sealed type filter drier
Replaceable core filter drier
Hot gas bypass
Condenser pressure relief valve
Pressure gauges
Pump down solenoid valve
Discharge gas muffler
Discharge gas sensor
Differential pressure switch
Magnehelic gauge with or without contact
Belt guard
Extended regrease line
High/low pressure switch (fixed type)
Fan cycling switch (adjustable type)
UVM (Under Voltage Monitor)
Volt free contact
Non-fused disconnect switch
Electric heater
19
22. MODEL NUMBER PTH006 PTH007 PTH008 PTH010 PTH012 PTH015 PTH017
NOMINAL CAPACITY @ 950
F, TONS* 6.43 7.43 8.61 10.47 12.95 15.21 17.47
NOMINALCFM 2500 2700 3400 4100 4900 6000 7000
NUMBEROFREFRIGERATIONCIRCUIT Single Dual Dual Dual Dual Dual Dual
COMPRESSOR Type Hermetic Scroll
Oil Type POE oil
Oil per system, Oz. 60 42 42 42 60 60 60
Refrigerant R-410A
Charge per system, Oz. 405 244 255 346 365 625/421 557
CONDENSERFAN Type Propeller with direct driven motor
Qty. 2 2 3 3 4 4 4
Motor Type Totally enclosed air over type (TEAO), Class F insulation & IP54
Motor kW - RPM 0.29-770 0.29-770 0.29-770 0.29-770 0.29-770 0.45-750 0.45-750
NominalCFM 6649 6649 10268 9830 13963 16934 16750
CONDENSERCOIL Type Inner grooved tubes & enhanced fins
Rows - Fins per inch 3-12 3-12 2-12 3-12 2-12 3-12 & 2-12 3-12
Total face area (Sq. ft.) 25.56 25.56 35.78 35.78 55.54 58.22 60.91
EVAPORATORBLOWER Type DIDW centrifugal fan with V-belt drive
(FORWARDCURVED)
Qty. Single fan
Motor Type Totally enclosed fan cooled type (TEFC), Class F insulation & IP55
Motor kW, Std./Alt. 1.1/1.5/2.2 1.5/2.2/3 1.5/2.2/3 2.2/3/4 2.2/3/4 3/4/5.5 4/5.5/7.5
EVAPORATORBLOWER Type DIDW centrifugal fan with V-belt drive
(BACKWARDCURVED)
Qty. Single fan
Motor Type Totally enclosed fan cooled type (TEFC), Class F insulation & IP55
Motor kW, Std./Alt. 2.2/3 2.2/3/4 3/4 3/4/5.5 4/5.5 5.5/7.5 5.5/7.5/11
EVAPORATOR COIL Type Inner grooved tubes & enhanced fins
Rows - Fins per inch 3-14 4-14 4-10 4-12 4-12 5-10 & 4-10 4-14
Total face area (Sq. ft.) 8 8 12 12 16.67 16.67 16.67
HIGH PRESSURE SWITCH Open (PSIG) 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15
Close (PSIG) 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22
LOW PRESSURE SWITCH Open (PSIG) 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7
Close (PSIG) 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7
SOUND PRESSURE LEVEL, dBA (1m./3m./5m)** 66.6/60.6/57 61.6/55.6/52.1 65.9/59.9/56.4 65.9/59.9/56.4 69.6/63.6/60 69.6/63.6/60 69.6/63.6/60
PHYSICAL DATA
* Cooling capacity & power input data @ 800
F DB/670
F WB indoor and 950
F DB outdoor (ambient) temperature.
** Based on free field area at ARI conditions. Tolerance: ±2 dBA.
20
23. 21
MODEL NUMBER PTH022 PTH025 PTH030 PTH035 PTH040 PTH045 PTH050 PTH060
NOMINAL CAPACITY @ 950
F, TONS* 23.64 25.97 29.62 34.84 40.47 46.87 51.84 58.38
NOMINALCFM 8500 10000 11800 13000 14200 16000 17500 20000
NUMBEROFREFRIGERATIONCIRCUIT Dual Dual Dual Dual Quadruple Quadruple Quadruple Quadruple
COMPRESSOR Type Hermetic Scroll
Oil Type POE oil
Oil per system, Oz. 110 110 110 110 110 110 110 110
Refrigerant R-410A
Charge per system, Oz. 601 626 739 899 492 616 733 778
CONDENSERFAN Type Propeller with direct driven motor
Qty. 2 4 4 4 4 4 4 4
Motor Type Totally enclosed air over type (TEAO), Class F insulation & IP54
Motor kW - RPM 2.1-1030 1.15-810 1.15-810 1.15-810 2.1-1030 2.1-1030 2.1-1030 2.1-1030
NominalCFM 21978 35376 31632 34416 45628 43956 45924 45924
CONDENSERCOIL Type Inner grooved tubes & enhanced fins
Rows - Fins per inch 4-12 2-12 3-12 3-12 3-12 4-12 4-12 4-12
Total face area (Sq. ft.) 48.87 89.25 72.25 97.75 97.75 97.75 119 119
EVAPORATORBLOWER Type DIDW centrifugal fan with V-belt drive
(FORWARDCURVED)
Qty. Single fan
Motor Type Totally enclosed fan cooled type (TEFC), Class F insulation & IP55
Motor kW, Std./Alt. 5.5/7.5/11 5.5/7.5/11 7.5/11/15 11/15 11/15 11/15/18.5 11/15/18.5 11/15/18.5/22
EVAPORATORBLOWER Type DIDW centrifugal fan with V-belt drive
(BACKWARDCURVED)
Qty. Single fan
Motor Type Totally enclosed fan cooled type (TEFC), Class F insulation & IP55
Motor kW, Std./Alt. 7.5/11 11/15 11/15/18.5 15/18.5 15/18.5 15/18.5/22 15/18.5/22 18.5/22/30
EVAPORATOR COIL Type Inner grooved tubes & enhanced fins
Rows - Fins per inch 4-14 4-14 4-14 5-14 5-14 5-14 5-14 6-12
Total face area (Sq. ft.) 25 25 26 26 37.5 37.5 52 52
HIGH PRESSURE SWITCH Open (PSIG) 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15 650 ± 15
Close (PSIG) 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22 500 ± 22
LOW PRESSURE SWITCH Open (PSIG) 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7 50 ± 7
Close (PSIG) 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7 90 ± 7
SOUND PRESSURE LEVEL, dBA (1m./3m./5m)** 77.9/71.9/68.4 75.9/69.9/66.4 75.9/69.9/66.4 77.4/71.3/67.8 80.4/74.3/70.8 80.9/74.9/71.4 81.3/75.3/71.7 81.3/75.3/71.7
PHYSICAL DATA
* Cooling capacity & power input data @ 800
F DB/670
F WB indoor and 950
F DB outdoor (ambient) temperature.
** Based on free field area at ARI conditions. Tolerance: ±2 dBA.
24. 22
SELECTION PROCEDURE
1. Determine cooling and heating capacity requirements at design conditions
Data:
Condenser entering air temperature : 1150
F
Evaporator entering air temperature : 800
F DB / 670
F WB
Evaporator airflow : 11,800 CFM
Required cooling capacity : 285,000 BTUH
Sensible heat capacity : 230,000 BTUH
External static pressure : 1.0 INCH WG.
Power supply (V-Ph-Hz) : 460-3-60
Unit type : Front fan supply (front return air)
2. Unit selection based on required cooling capacity
Enter cooling capacity performance data at condenser entering air temp. at 1150
F and evaporator entering air temp.
800
F DB, 670
F WB, 11800 CFM airflow. The PTH030 unit will give 310,520 BTUH cooling capacity (gross) and 256,200
BTUH sensible heat capacity (gross).
3. Determine fan speed and power requirements at design conditions
Before entering the fan performance tables, calculate the summation of external static pressure for the required compo-
nents as follows.
External static pressure : 1.0 INCH WG.
Additional module : NIL
1.0 INCH WG.
Enter fan performance table for PTH030 model. For 11800 CFM and external static pressure of 1.0 INCH WG, it require
738 RPM and 5.98 fan power consumption (kW) wherein the standard motor will meet job requirements.
4. Determine input power to motor
Use fan motor efficiency table.
Blower motor watts =
kW
=
5.98
= 6,840 Watts.
(Motor efficiency x Belt efficiency) (0.92 x 0.95)
5. Determine net capacities
Above capacities are gross and do not include blower motor heat gain.
Determine net capacities as follows:
Net cooling capacity = Gross cooling capacity – blower motor heat
= 310,520 – (6,840 WATTS x 3.413 BTUH/WATTS) = 287,175 BTUH
Net sensible capacity = 256,200 – (6,840 WATTS x 3.413 BTUH/WATTS) = 232,855 BTUH
6.To calculate leaving air conditions (see footnote for capacity tables)
DBL = DBE – (Sensible Capacity (Btuh) / 1.08 x CFM)
WBL = DBL – [DR (DBE – WBE)]
When sensible capacity approaches 1.0, especially at entering
DB higher than 800
F, find DBL in the same manner above, but
WBL is to be found from intersection of DBL Line on a psychro-
metric chart with the horizontal line of humidity ratio (W) where
(at SHR = 1), WL = WE.
ALTITUDE, FT. 2000 4000 6000 8000 10000
Total capacity 0.98 0.96 0.93 0.90 0.88
Sensible capacity 0.93 0.86 0.80 0.75 0.70
7. Altitude correction factors for cooling capacity
FACTOR
W
WE
WE= WL
WBE
WBL
DBL DBE
SHR=1.0 SHR<1.0
DBL DBE
W
WBL
WBE