York HFC-410A manual Evaporator Section, Condenser Features and Options, Roof Curbs

FORM 100.50-EG5 (108)

Features and Benefits (continued)

EVAPORATOR SECTION

Double Wall Construction – Double-wall construction is the standard construction of the Eco2 and incorporates powder coated pre-fabricated outer panels and corner post for maximum exterior surface protection.

Factory Shrink-wrap– Eco2 rooftop units are shipped from the factory with factory-fresh shrink-wrap packag- ing. No longer does the contractor need to worry about dirt and debris clogging up condenser coils or moisture leaking into the air handler on the units way to the job site or rigging yard.

Copper Fins – For more extreme climates that aggres- sively can attack aluminum, copper tube evaporator coils with copper fins are available. (This is not recommended for units in areas where they may be exposed to acid rain or environments where ammonia is present)

CONDENSER FEATURES AND OPTIONS

Scroll Compressors – Reliable, efficient, trouble-free operation is the true measure of a packaged rooftop’s value. That’s why YORK Eco2 Packaged Rooftop Air Conditioners use established scroll compressor technology to deliver dependable, economical per- formance in a wide range of applications. With the Eco2 Packaged Rooftop, you get the latest generation of compressor enhancements added to the scroll’s inherent strengths. The simplicity of a hermetic scroll compressor allows the use of fewer moving parts to minimize breakdown.

Multiple Compressor Staging – Through the use of the scroll compressor, the Eco2 has the ability to stage its cooling by enabling and disabling multiple single stage compressors on multiple circuits. These compressors are manifolded together in pairs on a single refrigera- tion circuit.

Compressor Circuiting – the Eco2 is designed so that only 2 scroll compressors are in tandem within one refrig- eration circuit. This means more reliable compressors, and less equipment down time. With multiple circuits, if a compressor should ever fail on one circuit, the other circuit will remain operational to work to maintain occu- pied loads. The Eco2 system has 2 circuits in a unit.

Condenser Fan Motors – The condenser fan motors used on the Eco2 unit are Totally Enclosed Air Over (TEAO) to provide maximum durability through any season.

Hot Gas Bypass – This options permits continuous, stable operation at capacities below the minimum step of unloading by introducing an artificial load on the evaporator. For models YPAL050-061, it is used on the lead circuit and standard on VAV units.

Replaceable Core Liquid Line Driers – Liquid line driers are standard on the Eco2 rooftop unit. An option is provided for replaceable core driers.

Copper Fins – For more extreme climates that aggres- sively can attack aluminum, copper tube condenser coils with copper fins are available. (This is not recommended for units in areas where they may be exposed to acid rain or environments where ammonia is present)

Pre-Coated Fins – An epoxy-coated aluminum fin stock to guard from corrosive agents and insulate against galvanic potential. Recommended for mild seashore or industrial locations.

Post-Coated Fins – Technicoat coil-coating process used on condenser coils for seashore and other cor- rosive applications (with the exception of strong alkalis, oxidizers, wet bromide, chlorine and fluorine in concen- trations greater than 100ppm).

Compressor Sound Blankets – Optional compressor acoustic sound blankets are available for sound sensi- tive applications.

ROOF CURBS

Partial perimeter roof curbs – This option includes a knock-down 14” high roof curb for use with wood nailer (by others). Roof curb supports the air handling section with a separate support under the condenser end.

CABINET FEATURES AND OPTIONS

Double-Wall Access Doors - Full-sized access doors provide easy access into the unit for routine maintenance and inspection. Solid wall liners encase insulation and prevent damage and erosion into the airstream.

Industry-leading, 1,000-hour, salt-spray rating, per ASTM B117, keeps unit in superior condition.

6 JOHNSON CONTROLS