Safety Information, System Operation

66441-YUM-D-1011

SAFETY INFORMATION

FOR YOUR SAFETY

•Make sure that the furnace area is clear and free of com- bustible materials, gasoline and other flammable vapors and liquids.

•Be sure the furnace is free and clear of insulating mate- rial. Examine the furnace area after installation of the fur- nace or the installation of additional insulation. Some types of insulation are combustible.

•For proper operation of this furnace, air for combustion and ventilation is required. Make sure that these open- ings are not obstructed.

•For lighting or shutting down this furnace, refer to the lighting instructions provided adjacent to the burners and also located in this manual.

•A blocked vent roll-out switch is provided in the burner compartment. This switch is a manual reset. If the fur- nace fails to operate, contact a qualified service techni- cian.

•Should the gas supply fail to shut off or if overheating occurs, shut off the gas valve to the furnace before shut- ting off the electrical supply. Then call a qualified service technician.

•Do not use this furnace if any part has been under water. A flood-damaged furnace is extremely dangerous. Attempts to use the furnace can result in fire or explo- sion. A qualified service technician should be contacted to inspect the furnace and to replace all gas controls, control system parts, electrical parts that have been wet or the furnace if deemed necessary.

•Determine the integrity of the installation regarding the flue gas vent, the return and supply air duct. Confirm the equipment is well supported and there are no signs of deterioration. The manufacturer recommends that main burner, ignition device and controls are inspected by a qualified service technician before each heating season.

SYSTEM OPERATION

THERMOSTATS

Set your thermostat for either heating or cooling then set it for the desired temperature. DO NOT MOVE THE THERMO-

STAT RAPIDLY ON AND OFF, OR BACK AND FORTH FROM HEAT TO COOL. THIS COULD DAMAGE YOUR EQUIPMENT.

Always allow at least 5 minutes between changes. Find the temperature that is most comfortable to you, and then LEAVE YOUR THERMOSTAT ALONE. (Exception is for night or vacation “set back” to conserve energy).

Manually moving the thermostat up or down will not speed up temperature changes in your rooms. This only causes the thermostat switch to function at your command rather than responding to room temperature.

Heat generated by devices other than the furnace may inter- fere with thermostat performance. Therefore, lamps, radios, television sets, etc. should not be placed near the thermostat.

FIGURE 1 - TYPICAL THERMOSTAT

INTERMITTENT IGNITION DEVICE

Your unit is equipped with a cycling pilot burner. It has a Pilot Relight control designed to automatically light the pilot burner each time the thermostat “calls” for heat.

This furnace is equipped with an intermittent pilot and auto- matic re-ignition system. Do Not attempt to manually relight the pilot. Personal injury could result.

2	Johnson Controls Unitary Products

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.