Lenox Elite Series XP16 Units Heat Pumps Connections for Optimizing System Charge, Indoor Unit

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GAUGE SET

CONNECTIONS FOR OPTIMIZING SYSTEM CHARGE

MANIFOLD GAUGE SET

LOW HIGH

B TRUE SUCTION PORT

CONNECTION

NOTE

turned right−side−up to deliver vapor during charge optimizing procedure.

REFRIGERANT

TANK

CHARGE IN	A
LIQUID PHASE
DIGITAL SCALE

TO LIQUID

LINE SERVICEVALVE C

D

OUTDOOR UNIT

TEMPERATURE SENSOR

(LIQUID LINE)

TEMPERATURE SENSOR (USE FOR

SUBCOOLING METHOD)

INSIDE OUTDOOR UNIT

A Close manifold gauge set valves and connect the center hose to a cylinder of HFC−410A. Set for liquid phase charging.

BConnect the manifold gauge set’s low pressure side to the true suction port.

CConnect the manifold gauge set’s high pressure side to the liquid line service port.

DPosition temperature sensor on liquid line near liquid line service port (use only for subcooling method).

Figure 21. Gauge Set Connections for Adding Refrigerant

OUTDOOR UNIT	DISTRIBUTOR
OUTDOOR UNIT		NOTE − ARROWS INDICATE DIRECTION
		NOTE − ARROWS INDICATE DIRECTION
		OF REFRIGERANT FLOW
	REVERSING VALVE
CHECK / EXPANSION
VALVE
	OUTDOOR
	COIL
BI−FLOW FILTER / DRIER		INDOOR UNIT
BI−FLOW FILTER / DRIER
	MUFFLER
	TRUE SUCTION	VAPOR
	PORT	VAPOR
	PORT	SERVICE
		SERVICE
		PORT
LIQUID LINE	COMPRESSOR
SERVICE PORT	COMPRESSOR
SERVICE PORT
		CHECK / EXPANSION VALVE

INDOOR

NOTE − Use gauge ports on vapor line valve and liquid valve for evacuating refrigerant lines andCOIL indoor coil. Use true suction port to measure vapor pressure during charging.

Figure 22. Heat Pump Cooling Cycle

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XP16 SERIES

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Contents Shipping and Packing List Table of ContentsGeneral Model Number Identification Unit Dimensions − inches mmSide View XP16−024 Base Section XP16 Base with LegsCaps and Fasteners Torque Requirements Typical Unit Parts ArrangementDetail a Operating Service Valves Operating Gauge Set and Service ValvesUsing Manifold Gauge SET To Access Service Port Operating Ball−Type Service Valve1DISCONNECT Power Recovering Refrigerant from Existing System3RECOVERING Refrigerant Method Method 2 LimitationsNew Outdoor Unit Placement Placement, Slab Mounting and Stabilizing Unit Detail a Outside Unit PlacementLouvered Panel Installation Removing and Installing PanelsLouvered Panel Removal Using Existing Line SET NEW or Replacement Line SET InstallationLine Set Requirements Adding Polyol Ester OIL RequirementsRefrigerant Line SET Alling Horizontal Runs Refrigerant Line SET From Vertical to HorizontalBrazing Connections 1CUT and Debur Brazing ProceduresFlow Nitrogen Wrap Service Valves6BRAZE Line SET 7PREPARATION for Next Step2CONNECT Gauges and Equipment for Flushing Procedure Indoor Expansion Valve Installation Installing New Indoor Metering DeviceSensing Bulb Installation Equalizer Line InstallationTest for Leaks S S S Evacuating Line Set and Indoor Coil2INSTALL Thermostat Size Circuit and Install DisconnectElectrical Connections 24VAC TransformerLOW Voltage Connections 4HIGH Voltage Power Supply ConnectionsTypical Field Wiring Typical Unit Wiring Diagram −024, −036 and −048 Only Typical Unit Wiring Diagram −060 Only Unit START−UP Unit Start−UpConnect Manifold Gauge SET and Weigh in Charge Leak CHECK, Repair and EvacuateCalculating System Charge for Outdoor Unit Void of Charge Indoor Unit Connections for Optimizing System ChargeAdjusting Indoor Airflow Optimizing ProcedureOptimizing System Refrigerant Charge LIQº SATºSCº = XP16−048−230 XP16−036−230XP16−060−230 Normal Operating Pressures Temperature PressuresUnit Components System OperationDS2 Green LED FAN TWO Connectors DelayTest 24VACDS2 DS1 Demand Defrost Control A108 Diagnostic LedsSlow OFFSECOND−STAGE Operation Defrost System Defrost Control CONNECTIONS, Jumpers Settings and FeaturesEmergency Heat Amber Light Defrost System OverviewOperational Mode Overview Compressor Delay Mode P5Defrost Cycle Actuation Temperature Mode TIME/TEMPERATURE Mode Demand Mode Thirty 30 Minute TimeDefrost HOW did Defrost TERMINATE?Degrees Resistance Fahrenheit 136.3 2680 High Discharge Sensor RT28 Temperature / Resistance Range S S Test Pin P1 FunctionsProcedure MaintenanceTwo−Stage Modulation Compressors Checks Tools RequiredHomeowner Compressor TemperatureOutdoor Unit FAN Motor PressuresXP16 Start−Up and Performance Cooling ModeStart UP Checks