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York Y34 User Manual

York Y34
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246653-YTG-E-0108
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
TECHNICAL GUIDE
MILLENNIUM
®
SINGLE PACKAGE ROOFTOP UNITS
Y
32, Y33 & Y34
25, 30, & 40 TON
25 TON (10 EER)
30 & 40 TON (9.5 EER)
®
30 TON UNIT SHOWN
ISO 9001
Certified Quality
Management System
TOMORROW’S UNIT TODAY
GENERAL
Introducing the YORK Millennium 25, 30, & 40 ton rooftop
line - units designed to provide peak performance and value
both today and for years to come. Millennium units are manu-
factured at an ISO 9001 registered facility, and each rooftop
is completely computer-run tested prior to shipment.
The Millennium is designed to be flexible enough to meet
your needs today and in the future. The true value of YORK’s
Millennium is that it can be designed to fit any need, from
cooling only, constant volume applications to variable air vol-
ume systems with variable frequency drive.
FEATURING:
Cooling Only Units
Cooling/Gas Heating Units (Natural) Standard or
Modulating Gas Heat available
Cooling/Electric Heating Units
Cooling/Hot Water Heating Units
Cooling/Steam Heating Units
Industry Leading Efficiency
Double Wall Construction
Stainless Steel or Powder Coated Drain Pan
Multiple Scroll Compressors
Multiple Refrigeration Circuits
Upgradable Motor Efficiency
Enhanced Filtration
Vibration Isolated Supply Fan and Motor
Technicoated Evaporator and Condenser Coils
High Capacity Evaporator Coils
Single Power Point Connection
Easy Access Hinged Doors
Variable Air Volume
Constant Air Volume
Factory Installed Economizers/Disconnect/Convenience
Outlet/Control Options
•Low Profile
MILLENNIUM SIMPLICITY
®
ELITE™ FEATURES:
Single Button Programming and LED Display
Designed to operate on both constant and variable air
volume units
365-Day real time clock with automatic Daylight Savings
time adjustment
Occupancy Schedule allowing two schedules per day
20 Holiday schedules with programmable schedules that
can start at any time, day or night
Patented Comfort Ventilation operation for economical
and comfortable economizer operation
Demand Ventilation option to assure proper IAQ condi-
tions based on available space or return air CO
2
levels
Temperature/Humidity programming algorithm allows
programmable limits to help control humidity in the space
Smoke Purge automatically ventilates the space when
smoke is detected
Monitors dirty filters and proves airflow before starting
heating or cooling
Intelligent recovery to bring the space temperature up to
occupied setting quicker and more economically

Table of Contents

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York Y34 Specifications

General IconGeneral
BrandYork
ModelY34
CategoryAir Conditioner
LanguageEnglish

Summary

Overview of YORK Millennium Units

Efficient Scroll Compressors

Industrial grade hermetic scroll compressors for peak efficiency and low noise operation.

Multiple Refrigeration Circuits

Intertwined 10-ton circuits for better unloading and part-load conditions.

Millennium Unit Features and Installation

Flexibility and Heating Options

Units offer flexibility for various needs, with options for natural gas, electric, hot water, or steam heat.

Installation and Service Ease

Designed for simple installation with easy access to components for efficient service.

Features, Options, and Accessories Summary

Standard Unit Features

Key features include double wall, scroll compressors, single power point, and low ambient cooling.

Unit Nomenclature and Model Codes

Model Code Breakdown

Detailed explanation of model code structure for unit selection and configuration.

Unit Selection and Sizing Procedures

Unit Selection Process

Step-by-step guide to selecting the correct unit based on capacity and requirements.

Fan and Motor Sizing

Procedures for selecting supply air fan speed, horsepower, and related components.

Electrical Protection Sizing

Guidelines for sizing overcurrent protection devices and determining circuit ampacity.

Supply Air Drive Adjustment

Adjusting Blower Speed

Procedures for adjusting supply fan speed to meet CFM requirements using sheave adjustments.

Altitude and Temperature Corrections

Altitude Correction Factors

Table and explanation for correcting CFM, static pressure, and BHP for altitude.

Guide Specifications - YORK Millennium Units

Optional Unit Systems and Features

Refrigeration System and Controls

Compressor and Control System

Compressor protection, cycling delays, and control logic for operation.

Equipment and Comfort Control Features

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