Lennox International Inc 506586-01 installation instructions Homeowner

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HOMEOWNER

Cleaning of the outdoor unit’s coil should be performed by a trained service technician. Contact your dealer and set up a schedule (preferably twice a year, but at least once a year) to inspect and service your outdoor unit. The following maintenance may be performed by the homeowner.

IMPORTANT

Sprinklers and soaker hoses should not be installed where they could cause prolonged exposure to the outdoor unit by treated water. Prolonged exposure of the unit to treated water (i.e., sprinkler systems, soakers, waste water, etc.) will corrode the surface of steel and aluminum parts and diminish performance and longevity of the unit.

Outdoor Coil

The outdoor unit must be properly maintained to ensure its proper operation.

SPlease contact your dealer to schedule proper inspection and maintenance for your equipment.

SMake sure no obstructions restrict airflow to the outdoor unit.

SGrass clippings, leaves, or shrubs crowding the unit can cause the unit to work harder and use more energy.

SKeep shrubbery trimmed away from the unit and periodically check for debris which collects around the unit.

Routine Maintenance

In order to ensure peak performance, your system must be properly maintained. Clogged filters and blocked airflow prevent your unit from operating at its most efficient level.

1.Air Filter Ask your Lennox dealer to show you where your indoor unit’s filter is located. It will be either at the indoor unit (installed internal or external to the cabinet) or behind a return air grille in the wall or ceiling. Check the filter monthly and clean or replace it as needed.

2.Disposable Filter Disposable filters should be replaced with a filter of the same type and size.

NOTE If you are unsure about the filter required for your system, call your Lennox dealer for assistance.

3.Reusable Filter Many indoor units are equipped with reusable foam filters. Clean foam filters with a mild soap and water solution; rinse thoroughly; allow filter to dry completely before returning it to the unit or grille.

NOTE The filter and all access panels must be in place any time the unit is in operation.

4. Lennox Branded Air Filters are designed to

remove airborne particles from the air passing through the filter.

5.Indoor Unit The indoor unit’s evaporator coil is equipped with a drain pan to collect condensate

formed as your system removes humidity from the inside air. Have your dealer show you the location of the drain line and how to check for obstructions. (This would also apply to an auxiliary drain, if installed.)

Thermostat Operation

See the ComfortSense® 7000 thermostat homeowner manual for instructions on how to operate your thermostat.

Heat Pump Operation

Your new Lennox heat pump has several characteristics that you should be aware of:

SHeat pumps satisfy heating demand by delivering large amounts of warm air into the living space. This is quite different from gas- or oil-fired furnaces or an electric furnace which deliver lower volumes of considerably hotter air to heat the space.

SDo not be alarmed if you notice frost on the outdoor coil in the winter months. Frost develops on the outdoor

coil during the heating cycle when temperatures are below 45°F (7°C). The heat pump control activates a defrost cycle lasting 5 to 15 minutes at preset intervals to clear the outdoor coil of the frost.

SDuring the defrost cycle, you may notice steam rising from the outdoor unit. This is a normal occurrence. The thermostat may engage auxiliary heat during the defrost cycle to satisfy a heating demand; however, the unit will return to normal operation at the conclusion of the defrost cycle.

Extended Power Outage

The heat pump is equipped with a compressor crankcase heater which protects the compressor from refrigerant slugging during cold weather operation.

If power to your unit has been interrupted for several hours or more, set the room thermostat selector to the EMERGENCY HEAT setting to obtain temporary heat without the risk of serious damage to the heat pump.

In EMERGENCY HEAT mode, all heating demand is satisfied by auxiliary heat; heat pump operation is locked out. After a six-hour compressor crankcase warm-up period, the thermostat can be switched to the HEAT setting and normal heat pump operation may resume.

Preservice Check

If your system fails to operate, check the following before calling for service:

SVerify room thermostat settings are correct.

SVerify that all electrical disconnect switches are ON.

SCheck for any blown fuses or tripped circuit breakers.

SVerify unit access panels are in place.

SVerify air filter is clean.

SIf service is needed, locate and write down the unit model number and have it handy before calling.

Accessories

For update−to−date information, see any of the following publications:

SLennox XP17 Engineering Handbook

SLennox Product Catalog

SLennox Price Book

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506586−01 10/10

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Contents General Table of ContentsHeat Pumps Unit Dimensions −− Inches mm Side View Access ViewModel Number Identification Base with Elongated LegsTypical Unit Parts Arrangement Control BOXOperating Service Valves Using Manifold Gauge SetShipping and Packing List Operating Angle Type Service Valve Operating Ball Type Service ValveTo Access Service Port Reinstall Stem CapRecovering Refrigerant from Existing System 1DISCONNECT PowerRecovering Refrigerant 2CONNECT Manifold Gauge SETUnit Placement Detail a Outside Unit Placement Placement, Slab Mounting and Stabilizing UnitStabilizing Unit on Uneven Surfaces Removing and Installing PanelsRoof Mounting Louvered Panel Installation Louvered Panel RemovalDetail C Detail D Detail aNew or Replacement Line Set Refrigerant Line SETRefrigerant Line SET From Vertical to Horizontal Refrigerant Line SET Alling Horizontal RunsBrazing Connections 1PIPING Panel Removal and Preparing Line SET 2CAP and Core RemovalWrap Service Valves Flow NitrogenBraze Line SET 7PREPARATION for Next StepFlushing Line Set and Indoor Coil Flushing Line Set and Indoor CoilInstalling Indoor Expansion Valve Indoor Expansion Valve InstallationSensing Bulb Installation Equalizer Line InstallationLeak Test Line Set and Indoor Coil Leak TestEvacuating Line Set and Indoor Coil S S S SSize Circuit and Install Disconnect 2INSTALL ThermostatElectrical 24VAC TransformerRoute Control Wires Ting 3A. Route Control Wires Ting4ROUTE High Voltage and Ground Wires Typical XP17 Wiring Heat Pump Control A175 Jumpers and Terminals Heat Pump Control AGEHeat Pump Control A175 Jumper and Terminal Descriptions Field Control Wiring Flat metal jumperFurnace Control Connections for Testing and Charging Servicing Units Delivered Void of ChargeUnit Start−Up System RefrigerantCooling Mode Indoor Airflow Check Heating Mode Indoor Airflow CheckAdding or Removing Refrigerant Airflowindoor CoilUsing HFC−410A Weigh In Method Subcooling Charging MethodAir Handler / Coil Match ups and Targeted Subcooling Values Operating and Temperature Pressures PsigSystem Operations Defrost SystemResistor Location Sensor Temperature / Resistance Range Unit SensorsDefrost Calibration Sequence of Operations YESTest Pin E33 Functions S SLow Pressure S87 Switch Operation Or belowHigh Pressure Switch S4 Sequence of Operation Input Fault or Miswire Degrees Resistance Fahrenheit 136.3 2680 System Status, Fault and Lockout LED Codes DS11 and DS14 ATUS, Fault Lockout LED CodesResetting Fault and Lockout LED Codes DS15 and DS13 Ault Lockout LED CodesAlert Status Moderate Device225ºF 107ºC Lockout Vice removed or Clears after Field Configuration and Testing TroubleshootingFAN Motor B4 Test Procedure FAN Motor Control A177 OPERATION,Fan Motor Control Error/Fault LED Codes Fan Motor Control Stage LED Indicator CodesFan Motor Control RPM, LED Code and DC Voltage Output Fan Motor Control Flash and Pause DurationsTOP Grille or FAN Motor Mount Adjustment for FAN Clearance TOP Grille AdjustmentFAN Motor Position Adjustment Demand BeginsFAN Motor Control A177 PULSE−WIDTH Modulation PWM Testing for External Power to Fan Motor Control Strip StartTerminal FinishMaintenance Snow Guard Top CoverHomeowner SunSource Home Energy System XP17 Start−Up and Performance Checklist Cooling ModeHeating Mode START−UP Checks