Lennox International Inc 06/11 50672801 Installing New Indoor Metering Device, Uncased Coil Shown

Page 16

Installing New Indoor Metering Device

This outdoor unit is designed for use in HFC−410A systems that use a check / expansion valve metering device (purchased separately) at the indoor coil.

See the Lennox XP13 Engineering Handbook for approved check / expansion valve kit match−ups. The check / expansion valve device can be installed either internal or external to the indoor coil. In applications where an uncased coil is being installed in a field−provided plenum, install the check / expansion valve in a manner that will provide access for field servicing of the check / expansion valve (see figure 11).

INDOOR EXPANSION VALVE INSTALLATION

TWO PIECE

 

(Uncased Coil Shown)

 

PATCH PLATE

 

 

(UNCASED

 

 

 

STUB

 

 

COIL ONLY)

LIQUID LINE

CHECK /

 

END

 

 

 

ORIFICE

 

 

 

 

 

 

 

 

 

 

EXPANSION

 

 

 

HOUSING

 

DISTRIBUTOR

 

 

VALVE

 

 

 

 

 

 

TUBES

 

 

 

 

 

TEFLON®

 

 

 

 

 

 

 

 

 

 

 

 

RING

 

 

 

 

TEFLON®

 

SENSING

 

 

 

 

RING

 

 

 

 

 

 

LINE

 

 

 

 

 

 

DISTRIBUTOR

 

EQUALIZER

 

 

ASSEMBLY

 

 

LINE

 

 

 

 

 

 

 

LIQUID LINE

ARemove the field−provided fitting that temporarily reconnected the liquid line to the indoor unit’s distributor assembly.

BInstall one of the provided Teflon® rings around the stubbed end of the check / expansion valve and lightly

lubricate the connector threads and expose surface of the Teflon® ring with refrigerant oil.

CAttach the stubbed end of the expansion valve to the liquid line orifice housing. Finger tighten and use an appropriately sized wrench to turn an additional 1/2 turn clockwise as illustrated in the figure above, or 20 ft−lb.

DPlace the remaining Teflon® washer around the other end of the check / expansion valve. Lightly lubricate connector threads and expose surface of the Teflon® ring with refrigerant oil.

EAttach the liquid line assembly to the check / expansion valve. Finger tighten and use an appropriately sized wrench to turn an additional 1/2 turn clockwise as illustrated in the figure above or 20 ft−lb.

1/2 Turn

11 12

1

10

 

2

9

 

43

8 7

6

5

ASSEMBLY WITH

BRASS NUT

SENSING BULB INSTALLATION

MALE EQUALIZER LINE

VAPOR

FITTING (SEE

LINE

EQUALIZER LINE

 

INSTALLATION FOR

LIQUID LINE

FURTHER DETAILS)

 

Sensing bulb insulation is required if mounted external to the coil casing.

AAttach the vapor line sensing bulb in the proper orientation as illustrated to the right using the clamp and screws provided.

NOTE

and expansion bulb before insulating the sensing bulb once installed.

BConnect the equalizer line from the check / expansion valve to the equalizer vapor port on the vapor line. Finger tighten the flare nut plus 1/8 turn (7 ft−lbs) as illustrated below.

 

1/8 Turn

 

11 12

1

10

 

2

9

 

 

43

8

7

6

5

EQUALIZER LINE INSTALLATION

Remove and discard either the flare seal cap or flare nut with copper flare seal bonnet from the equalizer line port on the vapor line as illustrated in the figure to the right.

VAPOR LINE

ON LINES SMALLER THAN

7/8", MOUNT SENSING

 

BULB AT EITHER THE 3 OR

 

9 O’CLOCK POSITION.

 

12

BULB

BULB

FLARE SEAL CAP

OR

FLARE NUT

VAPOR LINE

 

 

 

 

 

ON 7/8" AND LARGER LINES,

 

 

MOUNT SENSING BULB AT

COPPER FLARE

 

EITHER THE 4 OR 8 O’CLOCK

SEAL BONNET

12

POSITION. NEVER MOUNT ON

 

BOTTOM OF LINE.

MALE BRASS EQUALIZER

BULB

BULB

LINE FITTING

 

 

 

VAPOR LINE

NOTE OM OF LINE.

 

Figure 11. Installing Indoor Check / Expansion Valve

506728−01

Page 16

Page 15 Page 17
Image 16
Page 15 Page 17
Contents Shipping and Packing List Table of ContentsGeneral Unit Dimensions − Inches mm Model Number Identification 13 −036 − 230 −08Side View TOP ViewTypical Unit Parts Arrangement PLUMBING, Switches Sensor ComponentsControl Panel Operating Gauge Set and Service Valves Operating Service ValvesUsing Manifold Gauge SET Caps and Fasteners Torque RequirementsOperating Ball−Type Service Valve Operating Angle−Type Service ValveReinstall Stem Cap Recovering Refrigerant from Existing System 1DISCONNECT Power3RECOVERING Refrigerant Method Method 2 LimitationsNew Outdoor Unit Placement Detail a Outside Unit Placement Placement, Slab Mounting and Stabilizing UnitLouvered Panel Installation Removing and Installing PanelsLouvered Panel Removal NEW or Replacement Line SET Installation Using Existing Line SETLine Set Requirements Adding Polyol Ester OIL RequirementsRefrigerant Line SET From Vertical to Horizontal Refrigerant Line SET Alling Horizontal RunsBrazing Connections 1CUT and Debur 2CAP and Core RemovalWrap Service Valves Flow Nitrogen6BRAZE Line SET Preparation for Next Step2CONNECT Gauges and Equipment for Flushing Procedure 3FLUSHING Line SETInstalling New Indoor Metering Device Indoor Expansion Valve InstallationSensing Bulb Installation Equalizer Line InstallationConnect Gauge SET Leak Test Line Set and Indoor CoilTest for Leaks Evacuating Line Set and Indoor Coil 2EVACUATE the SystemSize Circuit and Install Disconnect 2INSTALL ThermostatElectrical 24VAC TransformerTypical Unit Wiring Diagram Unit Start−Up Unit START−UPConnect Manifold Gauge SET and WEIGH−IN Charge Leak CHECK, Repair and EvacuateConnections for Optimizing System Charge Using HFC−410A Weigh In Method Calculating System Charge for Outdoor Unit Void of ChargeOptimizing Procedure Adjusting Indoor AirflowOptimizing System Refrigerant Charge CFM =SATº LIQº SCºIf subcooling value is RefrigerantNormal Operating Pressures − Liquid +10 and Vapor +5 Psig HFC−410A Temperature F − Pressure Psig Defrost System System OperationDefrost Control CMC1 OFF Maintenance DealerIndoor Unit Indoor CoilXP13 Series Start−Up and Performance Checklist Installer CityJob Name Job no Date Job Location City Sequence of Operation Thermostat

LENNOX Elite Series XP13 Units HEAT PUMPS, 06/11 50672801 specifications

Lennox International Inc., a leading name in the HVAC (heating, ventilation, and air conditioning) industry, has a reputation for delivering high-quality and energy-efficient systems. One of the standout products in their lineup is the Lennox Elite Series XP13 heat pump, model number 50672801. This heat pump is designed to provide exceptional comfort throughout the year while offering efficiency and reliability that homeowners can depend on.

The Lennox Elite Series XP13 heat pump features a compact design that makes it suitable for various outdoor spaces. One of its main characteristics is its efficiency, boasting a SEER (Seasonal Energy Efficiency Ratio) rating of up to 16 and an HSPF (Heating Seasonal Performance Factor) of up to 9. This means that the XP13 can help reduce energy bills, making it an eco-friendly choice for homeowners looking to minimize their carbon footprint.

This heat pump utilizes advanced technology to ensure optimal performance. The XP13 is equipped with a scroll compressor, which operates quietly and efficiently compared to traditional compressors. This feature ensures a more reliable and consistent temperature control, which translates to enhanced comfort levels in the home. Moreover, the XP13 is designed with a sound-dampening system that reduces operational noise, making it one of the quieter options in the market.

Another key aspect of the XP13 heat pump is its innovative use of advanced coil technology. The unit's coils are made from high-grade aluminum, which promotes superior heat exchange and improves overall efficiency. In addition, the XP13 is designed with a built-in filter drier that helps remove moisture and contaminants from the refrigerant, protecting the system from potential damage and enhancing its lifespan.

The XP13 model is compatible with the iComfort S30 smart thermostat, allowing users to control their home’s temperature remotely. This smart technology provides energy-saving options and real-time updates, ensuring that homeowners can optimize their HVAC systems for both comfort and efficiency.

Overall, the Lennox Elite Series XP13 heat pump, model 50672801, exemplifies a commitment to delivering high-performance heating and cooling solutions. With its energy-efficient design, advanced technologies, and features aimed at enhancing user comfort and convenience, the XP13 remains a top choice among homeowners looking for a reliable and effective heat pump system.
Top Page Image Contents