York ND480, ND360, ND600 manual Air Handling Unit Features and Benefits

628767-YTG-C-0910

Air Handling Unit Features and Benefits	expansion valves and solenoid valves. Field modifications
	are not required for part load operations. Capacity reduction
Features	not only provides economical operation, but also maintains
These air handlers can be arranged for a variety of air	stable temperature and humidity levels in the conditioned
	space.
discharge patterns in either the horizontal or vertical position.
Refer to the unit installation instructions for other application	BAS Control: York Commercial Comfort System (YCCS)
possibilities.
	provides split system integration for YCCS single zone,
Benefits	change-over bypass and VAV systems.

Air handling units are designed with two distinct modules to provide maximum application flexibility. ND360 and 480 Models are shipped as single packages with the blower module mounted on top of the coil module. The ND600 Blower Section and the M1CZ600 Evaporator Section are shipped separately and must be assembled on the job site. All blower modules can be repositioned in the field to meet a large number of vertical and horizontal applications.

The blower module includes the blower wheels and room for a field-mounted motor and drive. All models offer multiple motor horsepower and drive options to meet both standard and high static airflow requirements. The coil module includes direct expansion coils, 2 in. throwaway filters, liquid line solenoid valves for capacity reduction, thermal expansion valves, distributors and a condensate drain pan.

Every air handling coil is pressurized with air and leak tested under water. After the headers are brazed onto the coil and the coil is installed in the unit, the coil is pressurized with nitrogen for pressure testing and additional leak testing. After the coil is evacuated and dehydrated, it is pressurized with a holding charge of nitrogen for storage and/or shipping.

These air handlers, combined with condensing units, provide years of quiet, efficient and dependable operation. These units are manufactured under ISO 9001 Quality System Certification.

Unit Installation

Easy Service: Serviceable expansion valves are provided on every unit. These valves are factory-installed to provide many years of trouble-free operation. If service is required, it is not necessary to unbraze any joints. The expansion valves also include a tee fitting to allow easy installation of hot gas bypass if required.

Coil Protection: The indoor coils of these air handlers can be factory Technicoated to provide extended life to the indoor coil in standard applications and additional corrosion protection on those applications in sea coast or corrosive environments.

Blower Motors: Different HP motors are available for each unit to meet almost any air delivery requirement. 5 HP motors are inherently protected. 7.5 thru 15 HP motors require motor overload protection.

NOTE: Power wiring for blower motor is field supplied on all Unit Models.

Accessories

Base Sections (30 and 40 ton): Base sections can be used to elevate units above the floor. If desired, a moderate percentage of outdoor air may be introduced through these sections by cutting an access opening to accommodate the outdoor air duct connection. These bases include a durable finish to match the evaporator blower unit. The base may have to be insulated for certain applications.

Units may be bottom-supported or ceiling-suspended and can be arranged to meet almost any space or duct requirements. Each unit is available with a choice of blower motor horsepower, drive packages and other accessories to make them suitable for most applications.

Blower Motors: Different HP motors are available for each unit to meet almost any air delivery requirement. All motors are UL approved, have permanently lubricated ball bearings and are field-mounted within the insulated cabinet of the units to minimize the transmission of sound to the surrounding space.

Air Handling units are available in four pipe configurations from 30 to 50 tons. The dual circuit options provide a wide variety of application and unit matchup possibilities.

Starters and Heater Elements : These blower motors do not have inherent protection and require external motor overload protection. See details in Overload Elements Table.

NOTE: Power wiring for blower motors is field supplied.

Factory-Mounted Components

Part Load Operation: These air handlers have multiple DX (Direct Expansion) coils with pre-piped distributors,

Hot Water Coils: Drainable water coils are available for field installation between the blower and the coil modules of both horizontal and vertical units. Since their casings match the dimensions and the finish of the basic units, they become an integral part of the unit after installation. The coils slide out of their casings for easy installation. Hot water coils have copper tubes that have been mechanically expanded into aluminum fins. Both headers are located on the same end of the coil. Coils are leak-tested at 325 psig under water and dried before their connections are capped for storage and shipping.

Steam Coils (30 ton only): Steam coils are available for installation between the blower and coil modules of both horizontal and vertical units. Since the casing matches the dimensions and the finish of the basic unit, it becomes an integral part of the unit after installation. The coil slides out of the casings for easy installation and is pitched in the casings to facilitate condensate drainage. The coil has copper tubes that have been mechanically expanded into aluminum fins. Both headers are located on the same end of the coil. The coil is leak-tested at 325 psig and dried before the connections are capped for storage and shipping.

4 Johnson Controls Unitary Products