Lennox International Inc Dave Lennox Signature Collection XC21 System On−board link

Page 15

 

 

Furnace

 

 

 

 

5

ComfortSense[ 7000 Thermostats

 

XC21 Two−Stage Air

Catalog # Y0349 or Y2081

 

 

DS

 

 

 

Conditioner Control

 

 

 

 

R

 

 

 

 

 

 

W

O

G

 

 

 

On−board link

 

 

 

 

 

L

 

W2

Low voltage thermostat

 

 

L

 

 

 

 

wiring

 

 

 

 

 

Y2

H

W1

 

 

 

 

 

Y1

DH

O

 

 

 

 

 

 

 

 

 

O

 

L

 

 

 

 

 

 

DS

R

H

 

 

 

 

 

 

 

 

2

C

C

D

 

 

 

 

 

 

 

 

 

 

Y1

B

 

 

 

3

 

 

 

 

 

 

4

Y2

Y2

 

 

 

1

 

 

 

 

 

 

 

G

Y1

 

 

R

 

C

 

 

 

W2

 

 

 

 

 

T

 

 

 

W1

T

 

 

 

 

 

1.Thermostat T terminals are used for outdoor sensor input. Use for thermostat’s outdoor temperature display (optional).

2.R to L connection is required for this model when using the ComfortSense® 7000 − catalog number Y0349 only. Resistor Kit (catalog number 47W97) required and ordered separately.

3.Cut on−board link W915 (clippable wire) for two−stage operation.

4.Cut loop jumper (clippable wire) DS to R on two−stage units for Humiditrol® applications. This will slow the outdoor unit’s fan speed to a specific RPM. A wire must be installed between the DS terminals on the furnace and outdoor unit controls.

5.Cut on−board link (clippable wire) DS−R for Humiditrol® or Harmony IIIt applications. This will slow the indoor blower motor to the lowest speed setting. See furnace installation instruction or engineering handbook for lowest fan speed information.

FIGURE 16

Page 15

XC21 SERIES

Page 14 Page 16
Image 15
Page 14 Page 16
Contents General −− Setting the Unit −− ClearancesSide View −− Setting the Unit −− Unit PlacementUnit Dimensions − Inches MM Access ViewRefrigerant Line SET PlacementStabilizing Unit on Uneven Surfaces Slab MountingPressor Expansion Liquid Line Service ValveStub END Distributor Tubes TWO−PIECE Patch Plate Uncased Coil onlyCAP and Core Removal −− Refrigerant Piping −− Brazing Procedures7PREPARATION for Next Step Wrap Service ValvesFlow Nitrogen Braze Line SETIndoor Expansion Valve Installation Sensing Bulb InstallationEqualizer Line Installation Lowhigh Manifold Gauge SET Outdoor Unit To Vapor −− Leak Test and EvacuationMinimum 3/8 Hose −− Leak Test and EvacuationLOW High SAE TEE with Swivel Coupler24VAC Transformer −− Electrical −− Circuit Sizing and Wire RoutingSize Circuit and Install Disconnect 1SWITCH 2INSTALL ThermostatWiring Entry Points 3A. Route Control Wires TingRoute Control Wires Ting 4ROUTE High Voltage and Ground WiresTWO−STAGE Heat Pump only J2 −− Electrical −− Outdoor Control A175 Jumpers and TerminalsJ3 ALL Units HP only J4Flat metal jumper −− Electrical −− Field Control WiringOn−board link TWO−STAGE Compressor Performance Start−Up ChecklistsProcedure ChargingXC21 Field Operational Checklist Subcooling Cooling ModeHeating Mode START−UP ChecksOutdoor 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.
Top Page Image Contents