York YPAL 050, YPAL 061, YPAL 051, YPAL 060 manual Introduction

FORM 100.50-NOM6 (1207)

SECTION 1 – INTRODUCTION

1

LD13271

FIG. 1-1 – PACKAGED ROOFTOP AIR CONDITIONING UNIT

ECOLOGICAL AND ECONOMICAL DESIGN Condensing Section

•High Efficiency eco2 rooftop units are optimized for HFC-410A refrigerant. YORK provides the FIRST standard product offering that meets the latest ASHRAE 90.1 energy efficiency require- ments.

•Cooling and Heating – Superior operating per- formance provides lower operating costs. Smaller steps of cooling capacity provide tighter control of building environment and occupant comfort while optimizing energy efficiency.

•Indoor Air Quality (IAQ) – Outside air econ- omizers provide energy savings in free cooling mode, and can provide a healthier and more comfortable building environment by introducing fresh outside air into the building as needed. In- doorAir Quality (IAQ) requirements for building ventilation and comfort are controlled through the microprocessor control panel.

•Premium-Efficiency Motors – Premium-effi- ciency motors are available for optimum energy efficiency. All motors used on the eco2 packaged rooftop air conditioner meet U.S. EPACT 1992 minimum requirements.

High-efficiency motors are standard. Motors are available in ODP or TEFC construction.

•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 performance 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 abil- ity to stage it’s cooling by enabling and disabling multiple single stage compressors on multiple circuits. These compressors are manifolded to- gether in two independent circuits.

•Compressor Circuiting – The eco2 is designed so that only 2 scroll compressors are in tandem within one refrigeration 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/s will remain operational to work to maintain oc- cupied loads. The eco2 system has 2 circuits in the unit.

JOHNSON CONTROLS 13