CONTENTS

SAFETY INFORMATION . . . . . . . . . . . . . . . . 2

FOR YOUR SAFETY . . . . . . . . . . . . . . . . . . . . . . . 2

SYSTEM OPERATION . . . . . . . . . . . . . . . . . . 2

THERMOSTATS . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INTERMITTENT IGNITION DEVICE . . . . . . . . . . . 2

INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . 3 TO SHUT DOWN THE FURNACE: . . . . . . . . . . . 3 TO LIGHT THE FURNACE: . . . . . . . . . . . . . . . . . 3 VENT SAFETY SYSTEM: . . . . . . . . . . . . . . . . . . 3 100% SHUT OFF: . . . . . . . . . . . . . . . . . . . . . . . . 3

EXPLAIN UNIT FUNCTION . . . . . . . . . . . . . . 4 GENERAL MAINTENANCE . . . . . . . . . . . . . . 4

HEATING SYSTEM INSPECTION . . . . . . . . . . . . 4 BURNER AND PILOT CHECK . . . . . . . . . . . . . . . 4 CLEANING BURNERS . . . . . . . . . . . . . . . . . . . . . 5

CLEANING FLUE PASSAGES AND

HEATING ELEMENTS . . . . . . . . . . . . . . . . . . . 5

AIR FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ECONOMIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 BLOWER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . 6

BLOWER SHAFT BEARING 6

MOTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CONDENSER COIL . . . . . . . . . . . . . . . . . . . . . . . . 7 REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 7

BEFORE CALLING A SERVICE PERSON: . . . . . 7

®

USER’S, MAINTENANCE

and

SERVICE INFORMATION

MANUAL

15 THRU 25 TON

SINGLE PACKAGE AIR CONDITIONER GAS/ELECTRIC

& ELECTRIC/ELECTRIC

The manufacturer recommends that the “User” read all sections of this manual and keep the manual for future reference.

FIRE OR EXPLOSION HAZARD

Failure to follow safety warnings exactly could result in serious injury, death, or property dam- age.

- Do not store or use gasoline or other flamma- ble vapors and liquids in the vicinity of this or any other appliance.

-WHAT TO DO IF YOU SMELL GAS: •Do not try to light any appliance.

•Do not touch any electrical switch; do not use any phone in your building.

•Leave the building immediately.

•Immediately call your gas supplier from a neigh- bor’s phone. Follow the gas supplier’s instruc- tions.

•If you cannot reach your gas supplier, call the fire department.

-Installation and service must be performed by

a qualified installer, service agency or the gas supplier.

66441-YUM-D-1011

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York 66441-YUM-D-1011 manual USER’S, Maintenance Service Information Manual

66441-YUM-D-1011 specifications

The York 66441-YUM-D-1011 is a robust and efficient air conditioning unit that combines cutting-edge technology with reliability to cater to the cooling needs of both residential and commercial spaces. This model stands out for its innovative features that enhance performance, energy efficiency, and user convenience, making it a popular choice in the HVAC market.

One of the primary features of the York 66441-YUM-D-1011 is its impressive cooling capacity. Designed to effortlessly maintain comfortable indoor climates even in extreme heat, this unit varies in capacity options to suit diverse applications. Its efficiency is further bolstered by a high energy efficiency ratio (EER) rating, allowing it to deliver optimal cooling while minimizing energy consumption, which in turn leads to reduced utility bills.

The unit is equipped with advanced inverter technology that allows for variable speed operation. This feature provides precise temperature control, enabling the system to adjust output based on current cooling demands. The inverter technology reduces wear and tear on the compressor, ensuring longer operational life while delivering quieter performance—a significant advantage for both home and office environments.

Additionally, the York 66441-YUM-D-1011 is built with an environmentally friendly refrigerant, which meets modern regulatory standards and reduces the overall carbon footprint of the system. This commitment to sustainability is reflected in the design, where eco-friendly materials are used throughout its construction without compromising performance.

User convenience is a hallmark of the York model, featuring an intuitive digital thermostat and smart home compatibility, allowing users to control their unit remotely via smartphone apps. This capability enables effortless adjustment of temperature settings and program scheduling, increasing overall convenience and ensuring optimal indoor comfort.

The unit's design includes a durable and corrosion-resistant cabinet, ensuring longevity and reliability even in harsh environmental conditions. Maintenance is simplified through easy-access panels, making routine upkeep straightforward for users.

Overall, the York 66441-YUM-D-1011 is a superior air conditioning unit that combines efficiency, durability, and advanced technology, making it an excellent investment for those seeking reliable climate control solutions. Whether for residential use or commercial applications, this model embodies the ideal balance between performance and sustainability.