Lennox International Inc Dave Lennox Signature Collection XC21 System installation instructions

Page 17

XC21 Field Operational Checklist

 

 

Cooling***

 

 

Heating***

 

 

 

 

 

 

 

 

Unit Readings

Y1

Expected results

Y2

Y1

Expected results

Y2 Second

 

First

during Y2 demand

Second

during Y2 demand

 

First Stage

Stage

 

Stage

(toggle switch ON)

Stage

(toggle switch ON)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

 

Same

 

 

Same

 

 

 

 

 

 

 

 

Amperage

 

Higher

 

 

Higher

 

 

 

 

 

 

 

 

Condenser Fan motor

 

 

 

 

 

 

 

 

 

 

 

 

 

Amperage

 

Same or Higher

 

 

Same or Higher

 

 

 

 

 

 

 

 

Temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

Ambient

 

Same

 

 

Same

 

 

 

 

 

 

 

 

Outdoor Coil Discharge Air

 

Higher

 

 

Lower

 

 

 

 

 

 

 

 

Compressor Discharge Line

 

Higher

 

 

Higher

 

 

 

 

 

 

 

 

Indoor Return Air

 

Same

 

 

Same

 

 

 

 

 

 

 

 

Indoor Coil Discharge Air

 

Lower

 

 

Higher

 

 

 

 

 

 

 

 

Pressures

 

 

 

 

 

 

 

 

 

 

 

 

 

Suction (Vapor)

 

Lower

 

 

Down

 

 

 

 

 

 

 

 

Liquid

 

Higher

 

 

Higher

 

 

 

 

 

 

 

 

Note − Unit may have a low ambient control or control that locks in second−stage operation below its set point. It may be necessary to remove a wire from the control when performing this check.

** On the XC21 units, the System Operation Monitor controls the second−stage solenoid coil in compressor.

*** Cooling Mode Operation − Block outdoor coil to maintain a minimum of 375 psig during testing.

Page 17

XC21 SERIES

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Contents General −− Setting the Unit −− ClearancesUnit Dimensions − Inches MM −− Setting the Unit −− Unit PlacementAccess View Side ViewStabilizing Unit on Uneven Surfaces PlacementSlab Mounting Refrigerant Line SETPressor Stub END Distributor Tubes TWO−PIECE Patch Plate Liquid Line Service ValveUncased Coil only ExpansionCAP and Core Removal −− Refrigerant Piping −− Brazing ProceduresFlow Nitrogen Wrap Service ValvesBraze Line SET 7PREPARATION for Next StepEqualizer Line Installation Indoor Expansion Valve InstallationSensing Bulb Installation Lowhigh Manifold Gauge SET Outdoor Unit To Vapor −− Leak Test and EvacuationLOW High −− Leak Test and EvacuationSAE TEE with Swivel Coupler Minimum 3/8 HoseSize Circuit and Install Disconnect 1SWITCH −− Electrical −− Circuit Sizing and Wire Routing2INSTALL Thermostat 24VAC TransformerRoute Control Wires Ting 3A. Route Control Wires Ting4ROUTE High Voltage and Ground Wires Wiring Entry PointsJ3 ALL Units −− Electrical −− Outdoor Control A175 Jumpers and TerminalsHP only J4 TWO−STAGE Heat Pump only J2Flat metal jumper −− Electrical −− Field Control WiringOn−board link Procedure Start−Up ChecklistsCharging TWO−STAGE Compressor PerformanceXC21 Field Operational Checklist Heating Mode Cooling ModeSTART−UP Checks SubcoolingOutdoor Coil Homeowner Information

Dave Lennox Signature Collection XC21 System, XC21 specifications

Lennox International Inc. has long been synonymous with innovative heating and cooling solutions. One of the standout products in their lineup is the Dave Lennox Signature Collection XC21 System, a central air conditioning unit renowned for its remarkable efficiency, advanced technology, and superior performance.

The XC21 features Lennox’s proprietary Signature Series components, ensuring that homeowners receive top-tier comfort with energy-saving capabilities. One of the main highlights of the XC21 is its impressive SEER (Seasonal Energy Efficiency Ratio) rating of up to 21. This high rating signifies exceptional energy efficiency, allowing homeowners to save significantly on energy bills while maintaining a comfortable indoor environment.

One of the key technologies incorporated into the XC21 is the variable-speed compressor. This feature enables the system to adjust its cooling output in response to the current temperature and humidity levels, providing optimal comfort without excessive energy consumption. The variable-speed operation allows for quieter performance, with sound levels as low as 65 decibels, making it one of the quietest systems available.

Furthermore, the XC21 is designed with the Advanced Energy Efficiency feature, which enhances its capability to regulate energy usage intelligently. This is complemented by the Smart Away feature, allowing the unit to enter energy-saving mode when the homeowner is away, ensuring that no energy is wasted during times of inactivity.

Additionally, the XC21 is built with durable and high-quality materials, including a galvanized steel cabinet that resists rust and corrosion, ensuring longevity and consistent performance in varied weather conditions. It also includes a unique design that allows for easier maintenance and serviceability, minimizing downtime and repair costs.

The XC21 system is compatible with the iComfort S30 smart thermostat, which offers advanced climate control capabilities through Wi-Fi connectivity. This feature allows users to manage their home’s heating and cooling system remotely, providing convenience and enhancing energy efficiency.

In summary, the Dave Lennox Signature Collection XC21 System exemplifies Lennox International Inc.’s commitment to cutting-edge technology, energy efficiency, and customer satisfaction. Its innovative features, high energy efficiency ratings, and user-friendly characteristics make it an excellent choice for homeowners looking to enhance their comfort while reducing energy expenses.
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