York 66441-YUM-D-1011 Input, Operating Instructions, To Shut Down the Furnace, Vent Safety System

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66441-YUM-D-1011

When the thermostat calls for heat, pilot gas is supplied and at the same time, sparking occurs to light the pilot gas. With the pilot lit, the flame sensor rod closes a circuit to the ignitor control which then opens the gas valve to admit main burner gas.

When the room thermostat is satisfied, the electrical circuit to the gas valve is opened, closing off both main burner and pilot gas simultaneously. If the pilot burner should fail to light, contact your heating contractor or gas utility for service to insure that proper operating conditions are restored.

INPUT

The correct heat capacity of the furnace is regulated by the burner orifices and the gas pressure. The proper orifices are furnished but the gas pressure regulator must be adjusted by the installer or gas utility service technician.

OPERATING INSTRUCTIONS

TO SHUT DOWN THE FURNACE:

1.Close the main gas shutoff valve(s).

2.Turn off the electric power supply.

TO LIGHT THE FURNACE:

1.Do not attempt to light manually.

2.Open the main gas shutoff valve(s).

3.Adjust the set point of the room thermostat above the tem- perature in the space.

4.Turn on the electric power supply.

5.The draft fan will operate. After an adequate purge time, the electric spark igniter will light the burners.

6.The burners will extinguish and relight automatically upon the demand of the room thermostat.

VENT SAFETY SYSTEM:

This gas furnace is equipped with an automatic reset high temperature sensor or rollout switch which in the unlikely event of a sustained main burner flame rollout will shut off the flow of gas by closing the main gas valve. The ignition mod- ules will also be disabled, preventing the flow of gas to the valves. The switch is located inside the gas heat access panel above the burner inlet. Flame rollout can be caused by blockage of the power vent system, improper gas pressure or adjustment. If this event occurs the furnace will not operate properly, gas supply to the furnace should be shut off and no attempt should be made to place the furnace in operation. The system should be inspected by a qualified service techni- cian. Refer to Figure 2 for a typical installation.

100% SHUT OFF:

The ignition modules are designed for 100% shut-off. If the furnace fails to ignite within 85 seconds after a call for heat, the flow of gas (including pilot) will be shut off and the ignition module will lock out. The module can be reset by:

A.Turning the system switch on the room thermostat to the “OFF” position and back to the “HEAT” position.

B.Decreasing the set point of the room thermostat below the temperature in the conditioned space and returning it to its original setting.

C.Opening and closing the unit's main disconnect switch.

FIGURE 2 - TYPICAL INSTALLATION

Johnson Controls Unitary Products

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Contents USER’S, Maintenance Service Information Manual Thermostats Safety InformationFor Your Safety System OperationTo Shut Down the Furnace Vent Safety SystemInput Operating InstructionsHeating System Inspection General MaintenanceUnit Installation Instruction Explain Unit FunctionCleaning Flue Passages Heating Elements Cleaning BurnersBlower Assembly Blower Shaft BearingMotors Registers TroubleshootingBefore Calling a Service Person Condenser Coil

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.
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