York vav rooftop unit

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An RTU is a single package unit containing all the components necessary for cooling or heating air in a building’s occupied spaces. Commercial units range in size from small 5 ton units supplying a single office area of 2,000 square feet (sq. ft) to over 150 ton units supplying multiple floors of a building totaling 60,000 sq. ft.

RTUs are typically used in single story buildings or multi-story buildings with four floors or less. Common applications include schools, places of worship, office buildings, restaurants, shopping centers, and big box retailers. For each of these buildings, RTUs can have various roles. They can provide cooling only, both cooling and heating, or contain a heat pump for limited sizes.

RTUs are roof mounted with the supply and return duct openings penetrating the roof. These openings can be arranged in a number of ways:

• Vertical supply and return– Directly below the unit
• Horizontal discharge and return– A location some distance away from the unit, with the ductwork running parallel to the roof and then down through the opening. Running the ductwork parallel to the roof requires the supply and return opening in the RTU to be on either the end or side of the unit.
• Combination of vertical and horizontal– The supply or return opening is directly below the unit (vertical supply and return) and the other is some distance away (horizontal discharge and return)

RTUs have two main parts to their structure:

• A condensing section comprised of compressors, condenser coils, and condenser fans
• An air handling section comprised of an evaporator coil, a supply air (SA) fan, a heat source, and air filters

Figure 1. Rooftop unit (RTU)

Many RTUs also include a wide range of optional equipment. Here are some of the more common options:

• An economizer that uses air from outside to cool the building during moderate weather
• An airflow monitoring station (AFMS) that is mounted on the economizer and measures ventilation air quantity
• A piezometer ring mounted at the SA fan inlet to measure SA volume
• An exhaust/return fan that equalizes building pressure when ventilation air is in use
• An energy conservation wheel that recovers heat from exhaust air (EA)
• A hot gas reheat (HGRH) coil that raises york vav rooftop unit SA temperature (SAT) during dehumidification

Finally, RTUs have several different heating options that can vary depending on their location:

• A gas fired system using natural or propane (LP) gas. This is a common option where gas is readily available
• Electric resistance heat

  In some areas, this option is restricted by codes. For example, in California, it is york vav rooftop unit by Title 24

• Steam and hot water coils when the building has an available heat source
• Heat pumps with smaller RTUs

FEATURES:

• Meets or exceeds ASHRAE Standard 90.1 and is ENERGY STAR® qualified.
• Hot Gas Reheat York vav rooftop unit Equipment—The new generation of York vav rooftop unit control is provided as a standard component on the Sunline™ packaged unit that provides the reliability and ease of use found in Smart Equipment.
• Scroll compressors.
• Installation time and costs are reduced by easy power and control wiring.
• All units are factory-wired, piped, charged, and tested prior to shipment.
• Factory-installed options such as stainless steel heat exchanger, electric heating elements, supply and return air smoke detectors, disconnect switch, powered or non-powered GFI convenience outlet, single enthalpy economizer, power exhaust, high static drive blower motor, phase monitor, coil guard, dirty filter switch, hinged filter door, and tool-free access panels further reduce installation costs.
• BAS factory mounted controls include Novar, Honeywell, Verasys™ and CPC.
• Gas and electric utility knockouts are provided on unit side and bottom for easy connections.
• Convertible airflow design means no panel cutting is required.
• The wide range of indoor airflows using belt-drive blowers.
• Durable finish, made of powder-painted, galvanized steel to meet 1,000-hour salt-spray test demands.
• Full-perimeter base rails are permanently attached to provide a solid unit foundation.
• The compressor is internally protected against high pressure and temperature.
• Grooved copper tubes and enhanced aluminum- fin construction improve heat transfer.
• Heat exchangers york vav rooftop unit corrosion-resistant, with aluminized steel tubular construction for durability and long service life.
• Permanently lubricated condenser and evaporator fan motor york vav rooftop unit need no annual maintenance.
• Complete line of field-installed accessories, propane and high-altitude conversion kits, smoke detectors, CO2 sensors, motorized dampers, single enthalpy economizers, and dual enthalpy sensors are available.
• Constant (CV), multiple speed (IntelliSpeed™) and variable air volume (VAV) option featuring a variable frequency drive (VFD) is available in several different factory and field-installed configurations to accommodate zoning needs.

York ZR 180 to 300 Sunline MagnaDRY Commercial Rooftop Units was last york vav rooftop unit August 3rd, 2023 by HVAC Expert

The YORK® brand of Johnson Controls has released two new commercial units — the 6.5- to 12.5-ton Predator™ series and 15- to 23-ton Large Sunline™ series. With efficiencies reaching as high as 21 IEER, these products comply with requirements set by the United States Department of Energy (DoE), ASHRAE 90.1-2013, 2015 International Energy Conservation Code, and the Consortium for Energy Efficiency’s Advanced Tier*. These efficiencies are achieved through the optimization of advanced technologies, including:

• Two independent refrigerant circuits to provide system redundancy and optimal reliability;
• Two UltraTech™ compressors allow for three stages of cooling on 6.5- to 17.5-ton models, one UltraTech™ compressor and one set of tandem scroll compressors provide four stages of cooling on 20-ton and 23-ton models to meet the most stringent building code requirements; 
• IntelliSpeed™ discrete fan control (DFC) to provide variation of the fan speed based on number of cooling stages engaged; and
• ECM condenser fan motor.
• Each unit is built exclusively to order and offers a number of options and accessories to match a building’s needs. In addition to common options, advanced features include:
• Optional MagnaDRY™ reheat system allows a portion of the refrigerant’s rejected heat to be reused, increasing efficiency, and reducing moisture levels without overcooling; and
• Optional VAV uses a variable frequency drive and pressure transducer to maintain constant static pressure in the supply duct. VAV units have three stages of cooling operation and the 20- and 23-ton VAV units have four stages of cooling.

--York, Johnson Controls

www.york.com

August 30, 2019

The newly released YORK® Sun™ Choice rooftop units from Johnson Controls deliver value from project start to finish. The 15-27.5 ton units exceed Department of Energy (DOE) york vav rooftop unit guidelines by up to 25% and already surpass future DOE 2023 part-load standards by almost 10% to reduced energy consumption and operating costs. A lightweight design and direct replacement footprint offers ease of installation for both new product and retrofit applications to reduce up-front costs.

“Standard-efficiency does york vav rooftop unit translate to standard performance with York vav rooftop unit said, Steve Maddox, vice president commercial engineering, commercial ducted systems, Johnson York vav rooftop unit. “The YORK Sun Choice rooftop units feature IntelliSpeed, an optional four stage fan control model that can deliver up to 15% higher IEER ratings than some competitive ‘high-efficiency’ units. This advancement not only provides optimal occupant comfort, it vav terminal schedule into lower operating costs over the lifetime of the unit.”

ryder moving vav and trucks YORK® Sun™ Choice 15-27.5 york vav rooftop unit rooftop units provide greater flexibility and simplified service, while reducing commercial building operating costs." width="345" height="259">

A thoughtful design includes independent circuits to help avoid full unit shutdowns and a lead-lag compensator for exceptional reliability. Single-side access to all serviceable items provide ease of service that is further simplified with the support of the new Johnson Controls Commercial Application Support organization that provides expert technical and field support for every aspect york vav rooftop unit ownership york vav rooftop unit including installation, replacement and service.

Additional features include:

• Multiple airflow strategies – including constant-volume (CV), IntelliSpeed multi-speed fan control, variable air vav silencer (VAV), and Continuous Reset Single Zone (CRSZ) control to offer flexibility to meet york vav rooftop unit demands of diverse applications.
• A broad range of outdoor air options including both factory and field installed versions of low-leak damper economizers, constant volume powered exhaust, and modulating powered exhaust.
• A wide range 12v hydralic proportion vave gas heat options including full modulating gas heat with a 2.85 to 1 turndown ratio and 1% incremental change of heating capacity.
• Smart Equipment enablement with a prepackaged control platform that maximizes control and efficiency while extending equipment life and reducing operating costs. Units seamlessly integrate with leading building controls systems, including Verasys®.An optional Mobile Access Portal (MAP) gateway with Wi-Fi® hotspot provides access to commissioning, vav terminal schedule and maintenance logs using a mobile smart device.

“The launch of YORK Sun Choice is a part of our greater commitment to the rooftop market,” said Alexander Graf, executive director of sales, YORK independent distribution, Johnson Controls. “Our team has reimagined 12v hydralic proportion vave unit performance and dependability. Their innovations are not forced by regulations but instead developed out of a genuine passion for exceeding building performance standards and delighting our customers. It’s a truly exciting time to be in this industry.”

Choice 15-27.5 rooftop units designed, engineered and assembled in the state-of-the-art Johnson Controls Rooftop Center for Excellence in Norman, Oklahoma. Units are supported with factory-backed warranties including a standard 1-year parts warranty, 5-year compressor and electric heat limited warranties, 10-year aluminized heat exchanger limited warranty and a 15-year stainless steel york vav rooftop unit exchanger limited warranty.

For more information, visit YORK.com/sunchoice.

About Johnson Controls

Johnson Controls is a global leader creating a safe, comfortable and sustainable world. Our 105,000 employees create intelligent buildings, efficient energy solutions and integrated infrastructure that work seamlessly together to deliver on the promise of smart cities and communities in 150 countries. Our commitment to sustainability dates back to our roots in 1885, with the invention of the first electric room thermostat. We are committed to york vav rooftop unit our customers win everywhere, every day and creating greater value for all of our stakeholders through our strategic focus on buildings. For more information, visit www.johnsoncontrols.com or follow @johnsoncontrols on Twitter.

About Johnson Controls Building Technologies & Solutions

Johnson Controls Building Technologies & Solutions is making the world safer, smarter and more sustainable – one building at a time. Our technology portfolio integrates every aspect york vav rooftop unit vav terminal price building – whether security systems, energy management, fire protection or HVACR – to ensure that we exceed customer expectations at all times. We operate in more than 150 countries through our unmatched network of branches and distribution channels, helping building owners, operators, engineers and contractors enhance the full lifecycle of any facility. Our arsenal of brands includes some of the most trusted names in the industry, such as Tyco^®, YORK^®, Metasys^®, Ruskin^®, Titus^®, Frick^®, PENN^®, Sabroe^®, Simplex^® and Grinnell^®. For more information, visit www.johnsoncontrols.com or follow @JCI_Buildings on Twitter.